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llvm-project/llvm/test/Other/new-pass-manager.ll

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[PM] Add module and function printing passes for the new pass manager. This implements the legacy passes in terms of the new ones. It adds basic testing using explicit runs of the passes. Next up will be wiring the basic output mechanism of opt up when the new pass manager is engaged unless bitcode writing is requested. llvm-svn: 199049
2014-01-12 20:15:39 +08:00
; This test is essentially doing very basic things with the opt tool and the
; new pass manager pipeline. It will be used to flesh out the feature
; completeness of the opt tool when the new pass manager is engaged. The tests
; may not be useful once it becomes the default or may get spread out into other
; files, but for now this is just going to step the new process through its
; paces.
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager \
[PM] Simplify how we parse the outer layer of the pass pipeline text and remove an extra, redundant pass manager wrapping every run. I had kept seeing these when manually testing, but it was getting really annoying and was going to cause problems with overly eager invalidation. The root cause was an overly complex and unnecessary pile of code for parsing the outer layer of the pass pipeline. We can instead delegate most of this to the recursive pipeline parsing. I've added some somewhat more basic and precise tests to catch this. llvm-svn: 225253
2015-01-06 16:37:58 +08:00
; RUN: -passes=no-op-module %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-MODULE-PASS
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-MODULE-PASS: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-MODULE-PASS-NEXT: Running pass: NoOpModulePass
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-MODULE-PASS-NEXT: Finished llvm::Module pass manager run
[PM] Simplify how we parse the outer layer of the pass pipeline text and remove an extra, redundant pass manager wrapping every run. I had kept seeing these when manually testing, but it was getting really annoying and was going to cause problems with overly eager invalidation. The root cause was an overly complex and unnecessary pile of code for parsing the outer layer of the pass pipeline. We can instead delegate most of this to the recursive pipeline parsing. I've added some somewhat more basic and precise tests to catch this. llvm-svn: 225253
2015-01-06 16:37:58 +08:00
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager \
[PM] Simplify how we parse the outer layer of the pass pipeline text and remove an extra, redundant pass manager wrapping every run. I had kept seeing these when manually testing, but it was getting really annoying and was going to cause problems with overly eager invalidation. The root cause was an overly complex and unnecessary pile of code for parsing the outer layer of the pass pipeline. We can instead delegate most of this to the recursive pipeline parsing. I've added some somewhat more basic and precise tests to catch this. llvm-svn: 225253
2015-01-06 16:37:58 +08:00
; RUN: -passes=no-op-cgscc %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-CGSCC-PASS
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager \
[PM] Simplify how we parse the outer layer of the pass pipeline text and remove an extra, redundant pass manager wrapping every run. I had kept seeing these when manually testing, but it was getting really annoying and was going to cause problems with overly eager invalidation. The root cause was an overly complex and unnecessary pile of code for parsing the outer layer of the pass pipeline. We can instead delegate most of this to the recursive pipeline parsing. I've added some somewhat more basic and precise tests to catch this. llvm-svn: 225253
2015-01-06 16:37:58 +08:00
; RUN: -passes='cgscc(no-op-cgscc)' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-CGSCC-PASS
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-CGSCC-PASS: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-CGSCC-PASS-NEXT: Running pass: ModuleToPostOrderCGSCCPassAdaptor
[PM] Loosen the check ever so slightly -- MSVC appears to not include a space after the comma in template arguments with our hacky type name system. llvm-svn: 290331
2016-12-22 15:53:20 +08:00
; CHECK-CGSCC-PASS-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*(CGSCCAnalysisManager|AnalysisManager<.*LazyCallGraph::SCC.*>).*}},{{.*}}Module>
; CHECK-CGSCC-PASS-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*(FunctionAnalysisManager|AnalysisManager<.*Function.*>).*}},{{.*}}Module>
[PM] Introduce CRTP mixin base classes to help define passes and analyses in the new pass manager. These just handle really basic stuff: turning a type name into a string statically that is nice to print in logs, and getting a static unique ID for each analysis. Sadly, the format of passes in anonymous namespaces makes using their names in tests really annoying so I've customized the names of the no-op passes to keep tests sane to read. This is the first of a few simplifying refactorings for the new pass manager that should reduce boilerplate and confusion. llvm-svn: 262004
2016-02-26 19:44:45 +08:00
; CHECK-CGSCC-PASS-NEXT: Running analysis: LazyCallGraphAnalysis
[PM/LCG] Teach the LazyCallGraph to maintain reference edges from every function to every defined function known to LLVM as a library function. LLVM can introduce calls to these functions either by replacing other library calls or by recognizing patterns (such as memset_pattern or vector math patterns) and replacing those with calls. When these library functions are actually defined in the module, we need to have reference edges to them initially so that we visit them during the CGSCC walk in the right order and can effectively rebuild the call graph afterward. This was discovered when building code with Fortify enabled as that is a common case of both inline definitions of library calls and simplifications of code into calling them. This can in extreme cases of LTO-ing with libc introduce *many* more reference edges. I discussed a bunch of different options with folks but all of them are unsatisfying. They either make the graph operations substantially more complex even when there are *no* defined libfuncs, or they introduce some other complexity into the callgraph. So this patch goes with the simplest possible solution of actual synthetic reference edges. If this proves to be a memory problem, I'm happy to implement one of the clever techniques to save memory here. llvm-svn: 308088
2017-07-15 16:08:19 +08:00
; CHECK-CGSCC-PASS-NEXT: Running analysis: TargetLibraryAnalysis
[NewPM] Fix a nasty bug with analysis invalidation in the new PM. The issue here is that we actually allow CGSCC passes to mutate IR (and therefore invalidate analyses) outside of the current SCC. At a minimum, we need to support mutating parent and ancestor SCCs to support the ArgumentPromotion pass which rewrites all calls to a function. However, the analysis invalidation infrastructure is heavily based around not needing to invalidate the same IR-unit at multiple levels. With Loop passes for example, they don't invalidate other Loops. So we need to customize how we handle CGSCC invalidation. Doing this without gratuitously re-running analyses is even harder. I've avoided most of these by using an out-of-band preserved set to accumulate the cross-SCC invalidation, but it still isn't perfect in the case of re-visiting the same SCC repeatedly *but* it coming off the worklist. Unclear how important this use case really is, but I wanted to call it out. Another wrinkle is that in order for this to successfully propagate to function analyses, we have to make sure we have a proxy from the SCC to the Function level. That requires pre-creating the necessary proxy. The motivating test case now works cleanly and is added for ArgumentPromotion. Thanks for the review from Philip and Wei! Differential Revision: https://reviews.llvm.org/D59869 llvm-svn: 357137
2019-03-28 08:51:36 +08:00
; CHECK-CGSCC-PASS-NEXT: Running analysis: FunctionAnalysisManagerCGSCCProxy
[New PM] Introducing PassInstrumentation framework Pass Execution Instrumentation interface enables customizable instrumentation of pass execution, as per "RFC: Pass Execution Instrumentation interface" posted 06/07/2018 on llvm-dev@ The intent is to provide a common machinery to implement all the pass-execution-debugging features like print-before/after, opt-bisect, time-passes etc. Here we get a basic implementation consisting of: * PassInstrumentationCallbacks class that handles registration of callbacks and access to them. * PassInstrumentation class that handles instrumentation-point interfaces that call into PassInstrumentationCallbacks. * Callbacks accept StringRef which is just a name of the Pass right now. There were some ideas to pass an opaque wrapper for the pointer to pass instance, however it appears that pointer does not actually identify the instance (adaptors and managers might have the same address with the pass they govern). Hence it was decided to go simple for now and then later decide on what the proper mental model of identifying a "pass in a phase of pipeline" is. * Callbacks accept llvm::Any serving as a wrapper for const IRUnit*, to remove direct dependencies on different IRUnits (e.g. Analyses). * PassInstrumentationAnalysis analysis is explicitly requested from PassManager through usual AnalysisManager::getResult. All pass managers were updated to run that to get PassInstrumentation object for instrumentation calls. * Using tuples/index_sequence getAnalysisResult helper to extract generic AnalysisManager's extra args out of a generic PassManager's extra args. This is the only way I was able to explicitly run getResult for PassInstrumentationAnalysis out of a generic code like PassManager::run or RepeatedPass::run. TODO: Upon lengthy discussions we agreed to accept this as an initial implementation and then get rid of getAnalysisResult by improving RepeatedPass implementation. * PassBuilder takes PassInstrumentationCallbacks object to pass it further into PassInstrumentationAnalysis. Callbacks registration should be performed directly through PassInstrumentationCallbacks. * new-pm tests updated to account for PassInstrumentationAnalysis being run * Added PassInstrumentation tests to PassBuilderCallbacks unit tests. Other unit tests updated with registration of the now-required PassInstrumentationAnalysis. Made getName helper to return std::string (instead of StringRef initially) to fix asan builtbot failures on CGSCC tests. Reviewers: chandlerc, philip.pfaffe Differential Revision: https://reviews.llvm.org/D47858 llvm-svn: 342664
2018-09-21 01:08:45 +08:00
; CHECK-CGSCC-PASS-NEXT: Running analysis: PassInstrumentationAnalysis
[NewPM] Fix a nasty bug with analysis invalidation in the new PM. The issue here is that we actually allow CGSCC passes to mutate IR (and therefore invalidate analyses) outside of the current SCC. At a minimum, we need to support mutating parent and ancestor SCCs to support the ArgumentPromotion pass which rewrites all calls to a function. However, the analysis invalidation infrastructure is heavily based around not needing to invalidate the same IR-unit at multiple levels. With Loop passes for example, they don't invalidate other Loops. So we need to customize how we handle CGSCC invalidation. Doing this without gratuitously re-running analyses is even harder. I've avoided most of these by using an out-of-band preserved set to accumulate the cross-SCC invalidation, but it still isn't perfect in the case of re-visiting the same SCC repeatedly *but* it coming off the worklist. Unclear how important this use case really is, but I wanted to call it out. Another wrinkle is that in order for this to successfully propagate to function analyses, we have to make sure we have a proxy from the SCC to the Function level. That requires pre-creating the necessary proxy. The motivating test case now works cleanly and is added for ArgumentPromotion. Thanks for the review from Philip and Wei! Differential Revision: https://reviews.llvm.org/D59869 llvm-svn: 357137
2019-03-28 08:51:36 +08:00
; CHECK-CGSCC-PASS-NEXT: Running analysis: OuterAnalysisManagerProxy<{{.*}}LazyCallGraph::SCC{{.*}}>
[PM] Introduce basic update capabilities to the new PM's CGSCC pass manager, including both plumbing and logic to handle function pass updates. There are three fundamentally tied changes here: 1) Plumbing *some* mechanism for updating the CGSCC pass manager as the CG changes while passes are running. 2) Changing the CGSCC pass manager infrastructure to have support for the underlying graph to mutate mid-pass run. 3) Actually updating the CG after function passes run. I can separate them if necessary, but I think its really useful to have them together as the needs of #3 drove #2, and that in turn drove #1. The plumbing technique is to extend the "run" method signature with extra arguments. We provide the call graph that intrinsically is available as it is the basis of the pass manager's IR units, and an output parameter that records the results of updating the call graph during an SCC passes's run. Note that "...UpdateResult" isn't a *great* name here... suggestions very welcome. I tried a pretty frustrating number of different data structures and such for the innards of the update result. Every other one failed for one reason or another. Sometimes I just couldn't keep the layers of complexity right in my head. The thing that really worked was to just directly provide access to the underlying structures used to walk the call graph so that their updates could be informed by the *particular* nature of the change to the graph. The technique for how to make the pass management infrastructure cope with mutating graphs was also something that took a really, really large number of iterations to get to a place where I was happy. Here are some of the considerations that drove the design: - We operate at three levels within the infrastructure: RefSCC, SCC, and Node. In each case, we are working bottom up and so we want to continue to iterate on the "lowest" node as the graph changes. Look at how we iterate over nodes in an SCC running function passes as those function passes mutate the CG. We continue to iterate on the "lowest" SCC, which is the one that continues to contain the function just processed. - The call graph structure re-uses SCCs (and RefSCCs) during mutation events for the *highest* entry in the resulting new subgraph, not the lowest. This means that it is necessary to continually update the current SCC or RefSCC as it shifts. This is really surprising and subtle, and took a long time for me to work out. I actually tried changing the call graph to provide the opposite behavior, and it breaks *EVERYTHING*. The graph update algorithms are really deeply tied to this particualr pattern. - When SCCs or RefSCCs are split apart and refined and we continually re-pin our processing to the bottom one in the subgraph, we need to enqueue the newly formed SCCs and RefSCCs for subsequent processing. Queuing them presents a few challenges: 1) SCCs and RefSCCs use wildly different iteration strategies at a high level. We end up needing to converge them on worklist approaches that can be extended in order to be able to handle the mutations. 2) The order of the enqueuing need to remain bottom-up post-order so that we don't get surprising order of visitation for things like the inliner. 3) We need the worklists to have set semantics so we don't duplicate things endlessly. We don't need a *persistent* set though because we always keep processing the bottom node!!!! This is super, super surprising to me and took a long time to convince myself this is correct, but I'm pretty sure it is... Once we sink down to the bottom node, we can't re-split out the same node in any way, and the postorder of the current queue is fixed and unchanging. 4) We need to make sure that the "current" SCC or RefSCC actually gets enqueued here such that we re-visit it because we continue processing a *new*, *bottom* SCC/RefSCC. - We also need the ability to *skip* SCCs and RefSCCs that get merged into a larger component. We even need the ability to skip *nodes* from an SCC that are no longer part of that SCC. This led to the design you see in the patch which uses SetVector-based worklists. The RefSCC worklist is always empty until an update occurs and is just used to handle those RefSCCs created by updates as the others don't even exist yet and are formed on-demand during the bottom-up walk. The SCC worklist is pre-populated from the RefSCC, and we push new SCCs onto it and blacklist existing SCCs on it to get the desired processing. We then *directly* update these when updating the call graph as I was never able to find a satisfactory abstraction around the update strategy. Finally, we need to compute the updates for function passes. This is mostly used as an initial customer of all the update mechanisms to drive their design to at least cover some real set of use cases. There are a bunch of interesting things that came out of doing this: - It is really nice to do this a function at a time because that function is likely hot in the cache. This means we want even the function pass adaptor to support online updates to the call graph! - To update the call graph after arbitrary function pass mutations is quite hard. We have to build a fairly comprehensive set of data structures and then process them. Fortunately, some of this code is related to the code for building the cal graph in the first place. Unfortunately, very little of it makes any sense to share because the nature of what we're doing is so very different. I've factored out the one part that made sense at least. - We need to transfer these updates into the various structures for the CGSCC pass manager. Once those were more sanely worked out, this became relatively easier. But some of those needs necessitated changes to the LazyCallGraph interface to make it significantly easier to extract the changed SCCs from an update operation. - We also need to update the CGSCC analysis manager as the shape of the graph changes. When an SCC is merged away we need to clear analyses associated with it from the analysis manager which we didn't have support for in the analysis manager infrsatructure. New SCCs are easy! But then we have the case that the original SCC has its shape changed but remains in the call graph. There we need to *invalidate* the analyses associated with it. - We also need to invalidate analyses after we *finish* processing an SCC. But the analyses we need to invalidate here are *only those for the newly updated SCC*!!! Because we only continue processing the bottom SCC, if we split SCCs apart the original one gets invalidated once when its shape changes and is not processed farther so its analyses will be correct. It is the bottom SCC which continues being processed and needs to have the "normal" invalidation done based on the preserved analyses set. All of this is mostly background and context for the changes here. Many thanks to all the reviewers who helped here. Especially Sanjoy who caught several interesting bugs in the graph algorithms, David, Sean, and others who all helped with feedback. Differential Revision: http://reviews.llvm.org/D21464 llvm-svn: 279618
2016-08-24 17:37:14 +08:00
; CHECK-CGSCC-PASS-NEXT: Starting CGSCC pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-CGSCC-PASS-NEXT: Running pass: NoOpCGSCCPass
[PM] Introduce basic update capabilities to the new PM's CGSCC pass manager, including both plumbing and logic to handle function pass updates. There are three fundamentally tied changes here: 1) Plumbing *some* mechanism for updating the CGSCC pass manager as the CG changes while passes are running. 2) Changing the CGSCC pass manager infrastructure to have support for the underlying graph to mutate mid-pass run. 3) Actually updating the CG after function passes run. I can separate them if necessary, but I think its really useful to have them together as the needs of #3 drove #2, and that in turn drove #1. The plumbing technique is to extend the "run" method signature with extra arguments. We provide the call graph that intrinsically is available as it is the basis of the pass manager's IR units, and an output parameter that records the results of updating the call graph during an SCC passes's run. Note that "...UpdateResult" isn't a *great* name here... suggestions very welcome. I tried a pretty frustrating number of different data structures and such for the innards of the update result. Every other one failed for one reason or another. Sometimes I just couldn't keep the layers of complexity right in my head. The thing that really worked was to just directly provide access to the underlying structures used to walk the call graph so that their updates could be informed by the *particular* nature of the change to the graph. The technique for how to make the pass management infrastructure cope with mutating graphs was also something that took a really, really large number of iterations to get to a place where I was happy. Here are some of the considerations that drove the design: - We operate at three levels within the infrastructure: RefSCC, SCC, and Node. In each case, we are working bottom up and so we want to continue to iterate on the "lowest" node as the graph changes. Look at how we iterate over nodes in an SCC running function passes as those function passes mutate the CG. We continue to iterate on the "lowest" SCC, which is the one that continues to contain the function just processed. - The call graph structure re-uses SCCs (and RefSCCs) during mutation events for the *highest* entry in the resulting new subgraph, not the lowest. This means that it is necessary to continually update the current SCC or RefSCC as it shifts. This is really surprising and subtle, and took a long time for me to work out. I actually tried changing the call graph to provide the opposite behavior, and it breaks *EVERYTHING*. The graph update algorithms are really deeply tied to this particualr pattern. - When SCCs or RefSCCs are split apart and refined and we continually re-pin our processing to the bottom one in the subgraph, we need to enqueue the newly formed SCCs and RefSCCs for subsequent processing. Queuing them presents a few challenges: 1) SCCs and RefSCCs use wildly different iteration strategies at a high level. We end up needing to converge them on worklist approaches that can be extended in order to be able to handle the mutations. 2) The order of the enqueuing need to remain bottom-up post-order so that we don't get surprising order of visitation for things like the inliner. 3) We need the worklists to have set semantics so we don't duplicate things endlessly. We don't need a *persistent* set though because we always keep processing the bottom node!!!! This is super, super surprising to me and took a long time to convince myself this is correct, but I'm pretty sure it is... Once we sink down to the bottom node, we can't re-split out the same node in any way, and the postorder of the current queue is fixed and unchanging. 4) We need to make sure that the "current" SCC or RefSCC actually gets enqueued here such that we re-visit it because we continue processing a *new*, *bottom* SCC/RefSCC. - We also need the ability to *skip* SCCs and RefSCCs that get merged into a larger component. We even need the ability to skip *nodes* from an SCC that are no longer part of that SCC. This led to the design you see in the patch which uses SetVector-based worklists. The RefSCC worklist is always empty until an update occurs and is just used to handle those RefSCCs created by updates as the others don't even exist yet and are formed on-demand during the bottom-up walk. The SCC worklist is pre-populated from the RefSCC, and we push new SCCs onto it and blacklist existing SCCs on it to get the desired processing. We then *directly* update these when updating the call graph as I was never able to find a satisfactory abstraction around the update strategy. Finally, we need to compute the updates for function passes. This is mostly used as an initial customer of all the update mechanisms to drive their design to at least cover some real set of use cases. There are a bunch of interesting things that came out of doing this: - It is really nice to do this a function at a time because that function is likely hot in the cache. This means we want even the function pass adaptor to support online updates to the call graph! - To update the call graph after arbitrary function pass mutations is quite hard. We have to build a fairly comprehensive set of data structures and then process them. Fortunately, some of this code is related to the code for building the cal graph in the first place. Unfortunately, very little of it makes any sense to share because the nature of what we're doing is so very different. I've factored out the one part that made sense at least. - We need to transfer these updates into the various structures for the CGSCC pass manager. Once those were more sanely worked out, this became relatively easier. But some of those needs necessitated changes to the LazyCallGraph interface to make it significantly easier to extract the changed SCCs from an update operation. - We also need to update the CGSCC analysis manager as the shape of the graph changes. When an SCC is merged away we need to clear analyses associated with it from the analysis manager which we didn't have support for in the analysis manager infrsatructure. New SCCs are easy! But then we have the case that the original SCC has its shape changed but remains in the call graph. There we need to *invalidate* the analyses associated with it. - We also need to invalidate analyses after we *finish* processing an SCC. But the analyses we need to invalidate here are *only those for the newly updated SCC*!!! Because we only continue processing the bottom SCC, if we split SCCs apart the original one gets invalidated once when its shape changes and is not processed farther so its analyses will be correct. It is the bottom SCC which continues being processed and needs to have the "normal" invalidation done based on the preserved analyses set. All of this is mostly background and context for the changes here. Many thanks to all the reviewers who helped here. Especially Sanjoy who caught several interesting bugs in the graph algorithms, David, Sean, and others who all helped with feedback. Differential Revision: http://reviews.llvm.org/D21464 llvm-svn: 279618
2016-08-24 17:37:14 +08:00
; CHECK-CGSCC-PASS-NEXT: Finished CGSCC pass manager run
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-CGSCC-PASS-NEXT: Finished llvm::Module pass manager run
[PM] Simplify how we parse the outer layer of the pass pipeline text and remove an extra, redundant pass manager wrapping every run. I had kept seeing these when manually testing, but it was getting really annoying and was going to cause problems with overly eager invalidation. The root cause was an overly complex and unnecessary pile of code for parsing the outer layer of the pass pipeline. We can instead delegate most of this to the recursive pipeline parsing. I've added some somewhat more basic and precise tests to catch this. llvm-svn: 225253
2015-01-06 16:37:58 +08:00
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager \
[PM] Simplify how we parse the outer layer of the pass pipeline text and remove an extra, redundant pass manager wrapping every run. I had kept seeing these when manually testing, but it was getting really annoying and was going to cause problems with overly eager invalidation. The root cause was an overly complex and unnecessary pile of code for parsing the outer layer of the pass pipeline. We can instead delegate most of this to the recursive pipeline parsing. I've added some somewhat more basic and precise tests to catch this. llvm-svn: 225253
2015-01-06 16:37:58 +08:00
; RUN: -passes=no-op-function %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-FUNCTION-PASS
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager \
[PM] Simplify how we parse the outer layer of the pass pipeline text and remove an extra, redundant pass manager wrapping every run. I had kept seeing these when manually testing, but it was getting really annoying and was going to cause problems with overly eager invalidation. The root cause was an overly complex and unnecessary pile of code for parsing the outer layer of the pass pipeline. We can instead delegate most of this to the recursive pipeline parsing. I've added some somewhat more basic and precise tests to catch this. llvm-svn: 225253
2015-01-06 16:37:58 +08:00
; RUN: -passes='function(no-op-function)' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-FUNCTION-PASS
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-FUNCTION-PASS: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-FUNCTION-PASS-NEXT: Running pass: ModuleToFunctionPassAdaptor
[PM] Loosen the regex for the proxy template name even further to cope with 'class' keywords in the template arguments and other silliness. llvm-svn: 262130
2016-02-27 19:07:16 +08:00
; CHECK-FUNCTION-PASS-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*}}>
[New PM] Introducing PassInstrumentation framework Pass Execution Instrumentation interface enables customizable instrumentation of pass execution, as per "RFC: Pass Execution Instrumentation interface" posted 06/07/2018 on llvm-dev@ The intent is to provide a common machinery to implement all the pass-execution-debugging features like print-before/after, opt-bisect, time-passes etc. Here we get a basic implementation consisting of: * PassInstrumentationCallbacks class that handles registration of callbacks and access to them. * PassInstrumentation class that handles instrumentation-point interfaces that call into PassInstrumentationCallbacks. * Callbacks accept StringRef which is just a name of the Pass right now. There were some ideas to pass an opaque wrapper for the pointer to pass instance, however it appears that pointer does not actually identify the instance (adaptors and managers might have the same address with the pass they govern). Hence it was decided to go simple for now and then later decide on what the proper mental model of identifying a "pass in a phase of pipeline" is. * Callbacks accept llvm::Any serving as a wrapper for const IRUnit*, to remove direct dependencies on different IRUnits (e.g. Analyses). * PassInstrumentationAnalysis analysis is explicitly requested from PassManager through usual AnalysisManager::getResult. All pass managers were updated to run that to get PassInstrumentation object for instrumentation calls. * Using tuples/index_sequence getAnalysisResult helper to extract generic AnalysisManager's extra args out of a generic PassManager's extra args. This is the only way I was able to explicitly run getResult for PassInstrumentationAnalysis out of a generic code like PassManager::run or RepeatedPass::run. TODO: Upon lengthy discussions we agreed to accept this as an initial implementation and then get rid of getAnalysisResult by improving RepeatedPass implementation. * PassBuilder takes PassInstrumentationCallbacks object to pass it further into PassInstrumentationAnalysis. Callbacks registration should be performed directly through PassInstrumentationCallbacks. * new-pm tests updated to account for PassInstrumentationAnalysis being run * Added PassInstrumentation tests to PassBuilderCallbacks unit tests. Other unit tests updated with registration of the now-required PassInstrumentationAnalysis. Made getName helper to return std::string (instead of StringRef initially) to fix asan builtbot failures on CGSCC tests. Reviewers: chandlerc, philip.pfaffe Differential Revision: https://reviews.llvm.org/D47858 llvm-svn: 342664
2018-09-21 01:08:45 +08:00
; CHECK-FUNCTION-PASS-NEXT: Running analysis: PassInstrumentationAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-FUNCTION-PASS-NEXT: Starting llvm::Function pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-FUNCTION-PASS-NEXT: Running pass: NoOpFunctionPass
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-FUNCTION-PASS-NEXT: Finished llvm::Function pass manager run
; CHECK-FUNCTION-PASS-NEXT: Finished llvm::Module pass manager run
[PM] Simplify how we parse the outer layer of the pass pipeline text and remove an extra, redundant pass manager wrapping every run. I had kept seeing these when manually testing, but it was getting really annoying and was going to cause problems with overly eager invalidation. The root cause was an overly complex and unnecessary pile of code for parsing the outer layer of the pass pipeline. We can instead delegate most of this to the recursive pipeline parsing. I've added some somewhat more basic and precise tests to catch this. llvm-svn: 225253
2015-01-06 16:37:58 +08:00
[PM] Add module and function printing passes for the new pass manager. This implements the legacy passes in terms of the new ones. It adds basic testing using explicit runs of the passes. Next up will be wiring the basic output mechanism of opt up when the new pass manager is engaged unless bitcode writing is requested. llvm-svn: 199049
2014-01-12 20:15:39 +08:00
; RUN: opt -disable-output -debug-pass-manager -passes=print %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-MODULE-PRINT
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-MODULE-PRINT: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-MODULE-PRINT: Running pass: VerifierPass
; CHECK-MODULE-PRINT: Running pass: PrintModulePass
[PM] Add module and function printing passes for the new pass manager. This implements the legacy passes in terms of the new ones. It adds basic testing using explicit runs of the passes. Next up will be wiring the basic output mechanism of opt up when the new pass manager is engaged unless bitcode writing is requested. llvm-svn: 199049
2014-01-12 20:15:39 +08:00
; CHECK-MODULE-PRINT: ModuleID
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
; CHECK-MODULE-PRINT: define void @foo(i1 %x, i8* %p1, i8* %p2)
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-MODULE-PRINT: Running pass: VerifierPass
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-MODULE-PRINT: Finished llvm::Module pass manager run
[PM] Add module and function printing passes for the new pass manager. This implements the legacy passes in terms of the new ones. It adds basic testing using explicit runs of the passes. Next up will be wiring the basic output mechanism of opt up when the new pass manager is engaged unless bitcode writing is requested. llvm-svn: 199049
2014-01-12 20:15:39 +08:00
[PM] Wire up support for explicitly running the verifier pass. The required functionality has been there for some time, but I never managed to actually wire it into the command line registry of passes. Let's do that. llvm-svn: 225144
2015-01-05 08:08:53 +08:00
; RUN: opt -disable-output -debug-pass-manager -disable-verify -passes='print,verify' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-MODULE-VERIFY
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-MODULE-VERIFY: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-MODULE-VERIFY: Running pass: PrintModulePass
[PM] Wire up support for explicitly running the verifier pass. The required functionality has been there for some time, but I never managed to actually wire it into the command line registry of passes. Let's do that. llvm-svn: 225144
2015-01-05 08:08:53 +08:00
; CHECK-MODULE-VERIFY: ModuleID
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
; CHECK-MODULE-VERIFY: define void @foo(i1 %x, i8* %p1, i8* %p2)
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-MODULE-VERIFY: Running pass: VerifierPass
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-MODULE-VERIFY: Finished llvm::Module pass manager run
[PM] Wire up support for explicitly running the verifier pass. The required functionality has been there for some time, but I never managed to actually wire it into the command line registry of passes. Let's do that. llvm-svn: 225144
2015-01-05 08:08:53 +08:00
[PM] Add module and function printing passes for the new pass manager. This implements the legacy passes in terms of the new ones. It adds basic testing using explicit runs of the passes. Next up will be wiring the basic output mechanism of opt up when the new pass manager is engaged unless bitcode writing is requested. llvm-svn: 199049
2014-01-12 20:15:39 +08:00
; RUN: opt -disable-output -debug-pass-manager -passes='function(print)' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-FUNCTION-PRINT
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-FUNCTION-PRINT: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-FUNCTION-PRINT: Running pass: VerifierPass
; CHECK-FUNCTION-PRINT: Running pass: ModuleToFunctionPassAdaptor
[PM] Loosen the regex for the proxy template name even further to cope with 'class' keywords in the template arguments and other silliness. llvm-svn: 262130
2016-02-27 19:07:16 +08:00
; CHECK-FUNCTION-PRINT: Running analysis: InnerAnalysisManagerProxy<{{.*}}>
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-FUNCTION-PRINT: Starting llvm::Function pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-FUNCTION-PRINT: Running pass: PrintFunctionPass
[PM] Add module and function printing passes for the new pass manager. This implements the legacy passes in terms of the new ones. It adds basic testing using explicit runs of the passes. Next up will be wiring the basic output mechanism of opt up when the new pass manager is engaged unless bitcode writing is requested. llvm-svn: 199049
2014-01-12 20:15:39 +08:00
; CHECK-FUNCTION-PRINT-NOT: ModuleID
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
; CHECK-FUNCTION-PRINT: define void @foo(i1 %x, i8* %p1, i8* %p2)
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-FUNCTION-PRINT: Finished llvm::Function pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-FUNCTION-PRINT: Running pass: VerifierPass
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-FUNCTION-PRINT: Finished llvm::Module pass manager run
[PM] Add module and function printing passes for the new pass manager. This implements the legacy passes in terms of the new ones. It adds basic testing using explicit runs of the passes. Next up will be wiring the basic output mechanism of opt up when the new pass manager is engaged unless bitcode writing is requested. llvm-svn: 199049
2014-01-12 20:15:39 +08:00
[PM] Wire up support for explicitly running the verifier pass. The required functionality has been there for some time, but I never managed to actually wire it into the command line registry of passes. Let's do that. llvm-svn: 225144
2015-01-05 08:08:53 +08:00
; RUN: opt -disable-output -debug-pass-manager -disable-verify -passes='function(print,verify)' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-FUNCTION-VERIFY
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-FUNCTION-VERIFY: Starting llvm::Module pass manager run
; CHECK-FUNCTION-VERIFY: Starting llvm::Function pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-FUNCTION-VERIFY: Running pass: PrintFunctionPass
[PM] Wire up support for explicitly running the verifier pass. The required functionality has been there for some time, but I never managed to actually wire it into the command line registry of passes. Let's do that. llvm-svn: 225144
2015-01-05 08:08:53 +08:00
; CHECK-FUNCTION-VERIFY-NOT: ModuleID
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
; CHECK-FUNCTION-VERIFY: define void @foo(i1 %x, i8* %p1, i8* %p2)
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-FUNCTION-VERIFY: Running pass: VerifierPass
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-FUNCTION-VERIFY: Finished llvm::Function pass manager run
; CHECK-FUNCTION-VERIFY: Finished llvm::Module pass manager run
[PM] Wire up support for explicitly running the verifier pass. The required functionality has been there for some time, but I never managed to actually wire it into the command line registry of passes. Let's do that. llvm-svn: 225144
2015-01-05 08:08:53 +08:00
[PM] Wire up support for printing assembly output from the opt command. This lets us round-trip IR in the expected manner with the opt tool. llvm-svn: 199075
2014-01-13 13:16:45 +08:00
; RUN: opt -S -o - -passes='no-op-module,no-op-module' %s \
; RUN: | FileCheck %s --check-prefix=CHECK-NOOP
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
; CHECK-NOOP: define void @foo(i1 %x, i8* %p1, i8* %p2) {
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-NOOP: entry:
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
; CHECK-NOOP: store i8 42, i8* %p1
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-NOOP: br i1 %x, label %loop, label %exit
; CHECK-NOOP: loop:
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
; CHECK-NOOP: %tmp1 = load i8, i8* %p2
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-NOOP: br label %loop
; CHECK-NOOP: exit:
[PM] Wire up support for printing assembly output from the opt command. This lets us round-trip IR in the expected manner with the opt tool. llvm-svn: 199075
2014-01-13 13:16:45 +08:00
; CHECK-NOOP: ret void
; CHECK-NOOP: }
[PM] Wire up support for writing bitcode with new PM. This moves the old pass creation functionality to its own header and updates the callers of that routine. Then it adds a new PM supporting bitcode writer to the header file, and wires that up in the opt tool. A test is added that round-trips code into bitcode and back out using the new pass manager. llvm-svn: 199078
2014-01-13 15:38:24 +08:00
; Round trip through bitcode.
; RUN: opt -f -o - -passes='no-op-module,no-op-module' %s \
; RUN: | llvm-dis \
; RUN: | FileCheck %s --check-prefix=CHECK-NOOP
[PM] Wire up the Verifier for the new pass manager and connect it to the various opt verifier commandline options. Mostly mechanical wiring of the verifier to the new pass manager. Exercises one of the more unusual aspects of it -- a pass can be either a module or function pass interchangably. If this is ever problematic, we can make things more constrained, but for things like the verifier where there is an "obvious" applicability at both levels, it seems convenient. This is the next-to-last piece of basic functionality left to make the opt commandline driving of the new pass manager minimally functional for testing and further development. There is still a lot to be done there (notably the factoring into .def files to kill the current boilerplate code) but it is relatively uninteresting. The only interesting bit left for minimal functionality is supporting the registration of analyses. I'm planning on doing that on top of the .def file switch mostly because the boilerplate for the analyses would be significantly worse. llvm-svn: 199646
2014-01-20 19:34:08 +08:00
; RUN: opt -disable-output -debug-pass-manager -verify-each -passes='no-op-module,function(no-op-function)' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-VERIFY-EACH
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-VERIFY-EACH: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-VERIFY-EACH: Running pass: VerifierPass
; CHECK-VERIFY-EACH: Running pass: NoOpModulePass
; CHECK-VERIFY-EACH: Running pass: VerifierPass
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-VERIFY-EACH: Starting llvm::Function pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-VERIFY-EACH: Running pass: NoOpFunctionPass
; CHECK-VERIFY-EACH: Running pass: VerifierPass
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-VERIFY-EACH: Finished llvm::Function pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-VERIFY-EACH: Running pass: VerifierPass
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-VERIFY-EACH: Finished llvm::Module pass manager run
[PM] Wire up the Verifier for the new pass manager and connect it to the various opt verifier commandline options. Mostly mechanical wiring of the verifier to the new pass manager. Exercises one of the more unusual aspects of it -- a pass can be either a module or function pass interchangably. If this is ever problematic, we can make things more constrained, but for things like the verifier where there is an "obvious" applicability at both levels, it seems convenient. This is the next-to-last piece of basic functionality left to make the opt commandline driving of the new pass manager minimally functional for testing and further development. There is still a lot to be done there (notably the factoring into .def files to kill the current boilerplate code) but it is relatively uninteresting. The only interesting bit left for minimal functionality is supporting the registration of analyses. I'm planning on doing that on top of the .def file switch mostly because the boilerplate for the analyses would be significantly worse. llvm-svn: 199646
2014-01-20 19:34:08 +08:00
; RUN: opt -disable-output -debug-pass-manager -disable-verify -passes='no-op-module,function(no-op-function)' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-NO-VERIFY
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-NO-VERIFY: Starting llvm::Module pass manager run
[PM] Wire up the Verifier for the new pass manager and connect it to the various opt verifier commandline options. Mostly mechanical wiring of the verifier to the new pass manager. Exercises one of the more unusual aspects of it -- a pass can be either a module or function pass interchangably. If this is ever problematic, we can make things more constrained, but for things like the verifier where there is an "obvious" applicability at both levels, it seems convenient. This is the next-to-last piece of basic functionality left to make the opt commandline driving of the new pass manager minimally functional for testing and further development. There is still a lot to be done there (notably the factoring into .def files to kill the current boilerplate code) but it is relatively uninteresting. The only interesting bit left for minimal functionality is supporting the registration of analyses. I'm planning on doing that on top of the .def file switch mostly because the boilerplate for the analyses would be significantly worse. llvm-svn: 199646
2014-01-20 19:34:08 +08:00
; CHECK-NO-VERIFY-NOT: VerifierPass
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-NO-VERIFY: Running pass: NoOpModulePass
[PM] Wire up the Verifier for the new pass manager and connect it to the various opt verifier commandline options. Mostly mechanical wiring of the verifier to the new pass manager. Exercises one of the more unusual aspects of it -- a pass can be either a module or function pass interchangably. If this is ever problematic, we can make things more constrained, but for things like the verifier where there is an "obvious" applicability at both levels, it seems convenient. This is the next-to-last piece of basic functionality left to make the opt commandline driving of the new pass manager minimally functional for testing and further development. There is still a lot to be done there (notably the factoring into .def files to kill the current boilerplate code) but it is relatively uninteresting. The only interesting bit left for minimal functionality is supporting the registration of analyses. I'm planning on doing that on top of the .def file switch mostly because the boilerplate for the analyses would be significantly worse. llvm-svn: 199646
2014-01-20 19:34:08 +08:00
; CHECK-NO-VERIFY-NOT: VerifierPass
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-NO-VERIFY: Starting llvm::Function pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-NO-VERIFY: Running pass: NoOpFunctionPass
[PM] Wire up the Verifier for the new pass manager and connect it to the various opt verifier commandline options. Mostly mechanical wiring of the verifier to the new pass manager. Exercises one of the more unusual aspects of it -- a pass can be either a module or function pass interchangably. If this is ever problematic, we can make things more constrained, but for things like the verifier where there is an "obvious" applicability at both levels, it seems convenient. This is the next-to-last piece of basic functionality left to make the opt commandline driving of the new pass manager minimally functional for testing and further development. There is still a lot to be done there (notably the factoring into .def files to kill the current boilerplate code) but it is relatively uninteresting. The only interesting bit left for minimal functionality is supporting the registration of analyses. I'm planning on doing that on top of the .def file switch mostly because the boilerplate for the analyses would be significantly worse. llvm-svn: 199646
2014-01-20 19:34:08 +08:00
; CHECK-NO-VERIFY-NOT: VerifierPass
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-NO-VERIFY: Finished llvm::Function pass manager run
[PM] Wire up the Verifier for the new pass manager and connect it to the various opt verifier commandline options. Mostly mechanical wiring of the verifier to the new pass manager. Exercises one of the more unusual aspects of it -- a pass can be either a module or function pass interchangably. If this is ever problematic, we can make things more constrained, but for things like the verifier where there is an "obvious" applicability at both levels, it seems convenient. This is the next-to-last piece of basic functionality left to make the opt commandline driving of the new pass manager minimally functional for testing and further development. There is still a lot to be done there (notably the factoring into .def files to kill the current boilerplate code) but it is relatively uninteresting. The only interesting bit left for minimal functionality is supporting the registration of analyses. I'm planning on doing that on top of the .def file switch mostly because the boilerplate for the analyses would be significantly worse. llvm-svn: 199646
2014-01-20 19:34:08 +08:00
; CHECK-NO-VERIFY-NOT: VerifierPass
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-NO-VERIFY: Finished llvm::Module pass manager run
[PM] Wire up the Verifier for the new pass manager and connect it to the various opt verifier commandline options. Mostly mechanical wiring of the verifier to the new pass manager. Exercises one of the more unusual aspects of it -- a pass can be either a module or function pass interchangably. If this is ever problematic, we can make things more constrained, but for things like the verifier where there is an "obvious" applicability at both levels, it seems convenient. This is the next-to-last piece of basic functionality left to make the opt commandline driving of the new pass manager minimally functional for testing and further development. There is still a lot to be done there (notably the factoring into .def files to kill the current boilerplate code) but it is relatively uninteresting. The only interesting bit left for minimal functionality is supporting the registration of analyses. I'm planning on doing that on top of the .def file switch mostly because the boilerplate for the analyses would be significantly worse. llvm-svn: 199646
2014-01-20 19:34:08 +08:00
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -debug-pass-manager \
[PM] Add a collection of no-op analysis passes and switch the new pass manager tests to use them and be significantly more comprehensive. This, naturally, uncovered a bug where the CGSCC pass manager wasn't printing analyses when they were run. The only remaining core manipulator is I think an invalidate pass similar to the require pass. That'll be next. =] llvm-svn: 225240
2015-01-06 10:50:06 +08:00
; RUN: -passes='require<no-op-module>,cgscc(require<no-op-cgscc>,function(require<no-op-function>))' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-ANALYSES
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-ANALYSES: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-ANALYSES: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-ANALYSES: Running analysis: NoOpModuleAnalysis
[PM] Introduce basic update capabilities to the new PM's CGSCC pass manager, including both plumbing and logic to handle function pass updates. There are three fundamentally tied changes here: 1) Plumbing *some* mechanism for updating the CGSCC pass manager as the CG changes while passes are running. 2) Changing the CGSCC pass manager infrastructure to have support for the underlying graph to mutate mid-pass run. 3) Actually updating the CG after function passes run. I can separate them if necessary, but I think its really useful to have them together as the needs of #3 drove #2, and that in turn drove #1. The plumbing technique is to extend the "run" method signature with extra arguments. We provide the call graph that intrinsically is available as it is the basis of the pass manager's IR units, and an output parameter that records the results of updating the call graph during an SCC passes's run. Note that "...UpdateResult" isn't a *great* name here... suggestions very welcome. I tried a pretty frustrating number of different data structures and such for the innards of the update result. Every other one failed for one reason or another. Sometimes I just couldn't keep the layers of complexity right in my head. The thing that really worked was to just directly provide access to the underlying structures used to walk the call graph so that their updates could be informed by the *particular* nature of the change to the graph. The technique for how to make the pass management infrastructure cope with mutating graphs was also something that took a really, really large number of iterations to get to a place where I was happy. Here are some of the considerations that drove the design: - We operate at three levels within the infrastructure: RefSCC, SCC, and Node. In each case, we are working bottom up and so we want to continue to iterate on the "lowest" node as the graph changes. Look at how we iterate over nodes in an SCC running function passes as those function passes mutate the CG. We continue to iterate on the "lowest" SCC, which is the one that continues to contain the function just processed. - The call graph structure re-uses SCCs (and RefSCCs) during mutation events for the *highest* entry in the resulting new subgraph, not the lowest. This means that it is necessary to continually update the current SCC or RefSCC as it shifts. This is really surprising and subtle, and took a long time for me to work out. I actually tried changing the call graph to provide the opposite behavior, and it breaks *EVERYTHING*. The graph update algorithms are really deeply tied to this particualr pattern. - When SCCs or RefSCCs are split apart and refined and we continually re-pin our processing to the bottom one in the subgraph, we need to enqueue the newly formed SCCs and RefSCCs for subsequent processing. Queuing them presents a few challenges: 1) SCCs and RefSCCs use wildly different iteration strategies at a high level. We end up needing to converge them on worklist approaches that can be extended in order to be able to handle the mutations. 2) The order of the enqueuing need to remain bottom-up post-order so that we don't get surprising order of visitation for things like the inliner. 3) We need the worklists to have set semantics so we don't duplicate things endlessly. We don't need a *persistent* set though because we always keep processing the bottom node!!!! This is super, super surprising to me and took a long time to convince myself this is correct, but I'm pretty sure it is... Once we sink down to the bottom node, we can't re-split out the same node in any way, and the postorder of the current queue is fixed and unchanging. 4) We need to make sure that the "current" SCC or RefSCC actually gets enqueued here such that we re-visit it because we continue processing a *new*, *bottom* SCC/RefSCC. - We also need the ability to *skip* SCCs and RefSCCs that get merged into a larger component. We even need the ability to skip *nodes* from an SCC that are no longer part of that SCC. This led to the design you see in the patch which uses SetVector-based worklists. The RefSCC worklist is always empty until an update occurs and is just used to handle those RefSCCs created by updates as the others don't even exist yet and are formed on-demand during the bottom-up walk. The SCC worklist is pre-populated from the RefSCC, and we push new SCCs onto it and blacklist existing SCCs on it to get the desired processing. We then *directly* update these when updating the call graph as I was never able to find a satisfactory abstraction around the update strategy. Finally, we need to compute the updates for function passes. This is mostly used as an initial customer of all the update mechanisms to drive their design to at least cover some real set of use cases. There are a bunch of interesting things that came out of doing this: - It is really nice to do this a function at a time because that function is likely hot in the cache. This means we want even the function pass adaptor to support online updates to the call graph! - To update the call graph after arbitrary function pass mutations is quite hard. We have to build a fairly comprehensive set of data structures and then process them. Fortunately, some of this code is related to the code for building the cal graph in the first place. Unfortunately, very little of it makes any sense to share because the nature of what we're doing is so very different. I've factored out the one part that made sense at least. - We need to transfer these updates into the various structures for the CGSCC pass manager. Once those were more sanely worked out, this became relatively easier. But some of those needs necessitated changes to the LazyCallGraph interface to make it significantly easier to extract the changed SCCs from an update operation. - We also need to update the CGSCC analysis manager as the shape of the graph changes. When an SCC is merged away we need to clear analyses associated with it from the analysis manager which we didn't have support for in the analysis manager infrsatructure. New SCCs are easy! But then we have the case that the original SCC has its shape changed but remains in the call graph. There we need to *invalidate* the analyses associated with it. - We also need to invalidate analyses after we *finish* processing an SCC. But the analyses we need to invalidate here are *only those for the newly updated SCC*!!! Because we only continue processing the bottom SCC, if we split SCCs apart the original one gets invalidated once when its shape changes and is not processed farther so its analyses will be correct. It is the bottom SCC which continues being processed and needs to have the "normal" invalidation done based on the preserved analyses set. All of this is mostly background and context for the changes here. Many thanks to all the reviewers who helped here. Especially Sanjoy who caught several interesting bugs in the graph algorithms, David, Sean, and others who all helped with feedback. Differential Revision: http://reviews.llvm.org/D21464 llvm-svn: 279618
2016-08-24 17:37:14 +08:00
; CHECK-ANALYSES: Starting CGSCC pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-ANALYSES: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-ANALYSES: Running analysis: NoOpCGSCCAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-ANALYSES: Starting llvm::Function pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-ANALYSES: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-ANALYSES: Running analysis: NoOpFunctionAnalysis
[PM] Add names and debug logging for analysis passes to the new pass manager. This starts to allow us to test analyses more easily, but it's really only the beginning. Some of the code here is still untestable without manual changes to create analysis passes, but I wanted to factor it into a small of chunks as possible. Next up in order to be able to test things are, in no particular order: - No-op analyses passes so we don't have to use real ones to exercise the pass maneger itself. - Automatic way of generating dummy passes that require an analysis be run, including a variant that calls a 'print' method on a pass to make it even easier to print out the results of an analysis. - Dummy passes that invalidate all analyses for their IR unit so we can test invalidation and re-runs. - Automatic way to print each analysis pass as it is re-run. - Automatic but optional verification of analysis passes everywhere possible. I'm not claiming I'll get to all of these immediately, but that's what is in the pipeline at some stage. I'm fleshing out exactly what I need and what to prioritize by working on converting analyses and then trying to test the conversion. =] llvm-svn: 225162
2015-01-05 20:21:44 +08:00
[PM] Don't run the machinery of invalidating all the analysis passes when all are being preserved. We want to short-circuit this for a couple of reasons. One, I don't really want passes to grow a dependency on actually receiving their invalidate call when they've been preserved. I'm thinking about removing this entirely. But more importantly, preserving everything is likely to be the common case in a lot of scenarios, and it would be really good to bypass all of the invalidation and preservation machinery there. Avoiding calling N opaque functions to try to invalidate things that are by definition still valid seems important. =] This wasn't really inpsired by much other than seeing the spam in the logging for analyses, but it seems better ot get it checked in rather than forgetting about it. llvm-svn: 225163
2015-01-05 20:32:11 +08:00
; Make sure no-op passes that preserve all analyses don't even try to do any
; analysis invalidation.
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -debug-pass-manager \
[PM] Add a collection of no-op analysis passes and switch the new pass manager tests to use them and be significantly more comprehensive. This, naturally, uncovered a bug where the CGSCC pass manager wasn't printing analyses when they were run. The only remaining core manipulator is I think an invalidate pass similar to the require pass. That'll be next. =] llvm-svn: 225240
2015-01-06 10:50:06 +08:00
; RUN: -passes='require<no-op-module>,cgscc(require<no-op-cgscc>,function(require<no-op-function>))' %s 2>&1 \
[PM] Don't run the machinery of invalidating all the analysis passes when all are being preserved. We want to short-circuit this for a couple of reasons. One, I don't really want passes to grow a dependency on actually receiving their invalidate call when they've been preserved. I'm thinking about removing this entirely. But more importantly, preserving everything is likely to be the common case in a lot of scenarios, and it would be really good to bypass all of the invalidation and preservation machinery there. Avoiding calling N opaque functions to try to invalidate things that are by definition still valid seems important. =] This wasn't really inpsired by much other than seeing the spam in the logging for analyses, but it seems better ot get it checked in rather than forgetting about it. llvm-svn: 225163
2015-01-05 20:32:11 +08:00
; RUN: | FileCheck %s --check-prefix=CHECK-NO-OP-INVALIDATION
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-NO-OP-INVALIDATION: Starting llvm::Module pass manager run
[PM] Don't run the machinery of invalidating all the analysis passes when all are being preserved. We want to short-circuit this for a couple of reasons. One, I don't really want passes to grow a dependency on actually receiving their invalidate call when they've been preserved. I'm thinking about removing this entirely. But more importantly, preserving everything is likely to be the common case in a lot of scenarios, and it would be really good to bypass all of the invalidation and preservation machinery there. Avoiding calling N opaque functions to try to invalidate things that are by definition still valid seems important. =] This wasn't really inpsired by much other than seeing the spam in the logging for analyses, but it seems better ot get it checked in rather than forgetting about it. llvm-svn: 225163
2015-01-05 20:32:11 +08:00
; CHECK-NO-OP-INVALIDATION-NOT: Invalidating all non-preserved analyses
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -debug-pass-manager \
[PM] Add a utility pass template that synthesizes the invalidation of a specific analysis result. This is quite handy to test things, and will also likely be very useful for debugging issues. You could narrow down pass validation failures by walking these invalidate pass runs up and down the pass pipeline, etc. I've added support to the pass pipeline parsing to be able to create one of these for any analysis pass desired. Just adding this class uncovered one latent bug where the AnalysisManager CRTP base class had a hard-coded Module type rather than using IRUnitT. I've also added tests for invalidation and caching of analyses in a basic way across all the pass managers. These in turn uncovered two more bugs where we failed to correctly invalidate an analysis -- its results were invalidated but the key for re-running the pass was never cleared and so it was never re-run. Quite nasty. I'm very glad to debug this here rather than with a full system. Also, yes, the naming here is horrid. I'm going to update some of the names to be slightly less awful shortly. But really, I've no "good" ideas for naming. I'll be satisfied if I can get it to "not bad". llvm-svn: 225246
2015-01-06 12:49:44 +08:00
; RUN: -passes='require<no-op-module>,require<no-op-module>,require<no-op-module>' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-DO-CACHE-MODULE-ANALYSIS-RESULTS
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-DO-CACHE-MODULE-ANALYSIS-RESULTS: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-DO-CACHE-MODULE-ANALYSIS-RESULTS: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-DO-CACHE-MODULE-ANALYSIS-RESULTS: Running analysis: NoOpModuleAnalysis
; CHECK-DO-CACHE-MODULE-ANALYSIS-RESULTS-NOT: Running analysis: NoOpModuleAnalysis
[PM] Add a utility pass template that synthesizes the invalidation of a specific analysis result. This is quite handy to test things, and will also likely be very useful for debugging issues. You could narrow down pass validation failures by walking these invalidate pass runs up and down the pass pipeline, etc. I've added support to the pass pipeline parsing to be able to create one of these for any analysis pass desired. Just adding this class uncovered one latent bug where the AnalysisManager CRTP base class had a hard-coded Module type rather than using IRUnitT. I've also added tests for invalidation and caching of analyses in a basic way across all the pass managers. These in turn uncovered two more bugs where we failed to correctly invalidate an analysis -- its results were invalidated but the key for re-running the pass was never cleared and so it was never re-run. Quite nasty. I'm very glad to debug this here rather than with a full system. Also, yes, the naming here is horrid. I'm going to update some of the names to be slightly less awful shortly. But really, I've no "good" ideas for naming. I'll be satisfied if I can get it to "not bad". llvm-svn: 225246
2015-01-06 12:49:44 +08:00
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -debug-pass-manager \
[PM] Add a utility pass template that synthesizes the invalidation of a specific analysis result. This is quite handy to test things, and will also likely be very useful for debugging issues. You could narrow down pass validation failures by walking these invalidate pass runs up and down the pass pipeline, etc. I've added support to the pass pipeline parsing to be able to create one of these for any analysis pass desired. Just adding this class uncovered one latent bug where the AnalysisManager CRTP base class had a hard-coded Module type rather than using IRUnitT. I've also added tests for invalidation and caching of analyses in a basic way across all the pass managers. These in turn uncovered two more bugs where we failed to correctly invalidate an analysis -- its results were invalidated but the key for re-running the pass was never cleared and so it was never re-run. Quite nasty. I'm very glad to debug this here rather than with a full system. Also, yes, the naming here is horrid. I'm going to update some of the names to be slightly less awful shortly. But really, I've no "good" ideas for naming. I'll be satisfied if I can get it to "not bad". llvm-svn: 225246
2015-01-06 12:49:44 +08:00
; RUN: -passes='require<no-op-module>,invalidate<no-op-module>,require<no-op-module>' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-DO-INVALIDATE-MODULE-ANALYSIS-RESULTS
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-DO-INVALIDATE-MODULE-ANALYSIS-RESULTS: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-DO-INVALIDATE-MODULE-ANALYSIS-RESULTS: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-DO-INVALIDATE-MODULE-ANALYSIS-RESULTS: Running analysis: NoOpModuleAnalysis
; CHECK-DO-INVALIDATE-MODULE-ANALYSIS-RESULTS: Invalidating analysis: NoOpModuleAnalysis
; CHECK-DO-INVALIDATE-MODULE-ANALYSIS-RESULTS: Running analysis: NoOpModuleAnalysis
[PM] Add a utility pass template that synthesizes the invalidation of a specific analysis result. This is quite handy to test things, and will also likely be very useful for debugging issues. You could narrow down pass validation failures by walking these invalidate pass runs up and down the pass pipeline, etc. I've added support to the pass pipeline parsing to be able to create one of these for any analysis pass desired. Just adding this class uncovered one latent bug where the AnalysisManager CRTP base class had a hard-coded Module type rather than using IRUnitT. I've also added tests for invalidation and caching of analyses in a basic way across all the pass managers. These in turn uncovered two more bugs where we failed to correctly invalidate an analysis -- its results were invalidated but the key for re-running the pass was never cleared and so it was never re-run. Quite nasty. I'm very glad to debug this here rather than with a full system. Also, yes, the naming here is horrid. I'm going to update some of the names to be slightly less awful shortly. But really, I've no "good" ideas for naming. I'll be satisfied if I can get it to "not bad". llvm-svn: 225246
2015-01-06 12:49:44 +08:00
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -debug-pass-manager \
[PM] Add a utility pass template that synthesizes the invalidation of a specific analysis result. This is quite handy to test things, and will also likely be very useful for debugging issues. You could narrow down pass validation failures by walking these invalidate pass runs up and down the pass pipeline, etc. I've added support to the pass pipeline parsing to be able to create one of these for any analysis pass desired. Just adding this class uncovered one latent bug where the AnalysisManager CRTP base class had a hard-coded Module type rather than using IRUnitT. I've also added tests for invalidation and caching of analyses in a basic way across all the pass managers. These in turn uncovered two more bugs where we failed to correctly invalidate an analysis -- its results were invalidated but the key for re-running the pass was never cleared and so it was never re-run. Quite nasty. I'm very glad to debug this here rather than with a full system. Also, yes, the naming here is horrid. I'm going to update some of the names to be slightly less awful shortly. But really, I've no "good" ideas for naming. I'll be satisfied if I can get it to "not bad". llvm-svn: 225246
2015-01-06 12:49:44 +08:00
; RUN: -passes='cgscc(require<no-op-cgscc>,require<no-op-cgscc>,require<no-op-cgscc>)' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-DO-CACHE-CGSCC-ANALYSIS-RESULTS
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-DO-CACHE-CGSCC-ANALYSIS-RESULTS: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-DO-CACHE-CGSCC-ANALYSIS-RESULTS: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-DO-CACHE-CGSCC-ANALYSIS-RESULTS: Running analysis: NoOpCGSCCAnalysis
; CHECK-DO-CACHE-CGSCC-ANALYSIS-RESULTS-NOT: Running analysis: NoOpCGSCCAnalysis
[PM] Add a utility pass template that synthesizes the invalidation of a specific analysis result. This is quite handy to test things, and will also likely be very useful for debugging issues. You could narrow down pass validation failures by walking these invalidate pass runs up and down the pass pipeline, etc. I've added support to the pass pipeline parsing to be able to create one of these for any analysis pass desired. Just adding this class uncovered one latent bug where the AnalysisManager CRTP base class had a hard-coded Module type rather than using IRUnitT. I've also added tests for invalidation and caching of analyses in a basic way across all the pass managers. These in turn uncovered two more bugs where we failed to correctly invalidate an analysis -- its results were invalidated but the key for re-running the pass was never cleared and so it was never re-run. Quite nasty. I'm very glad to debug this here rather than with a full system. Also, yes, the naming here is horrid. I'm going to update some of the names to be slightly less awful shortly. But really, I've no "good" ideas for naming. I'll be satisfied if I can get it to "not bad". llvm-svn: 225246
2015-01-06 12:49:44 +08:00
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -debug-pass-manager \
[PM] Add a utility pass template that synthesizes the invalidation of a specific analysis result. This is quite handy to test things, and will also likely be very useful for debugging issues. You could narrow down pass validation failures by walking these invalidate pass runs up and down the pass pipeline, etc. I've added support to the pass pipeline parsing to be able to create one of these for any analysis pass desired. Just adding this class uncovered one latent bug where the AnalysisManager CRTP base class had a hard-coded Module type rather than using IRUnitT. I've also added tests for invalidation and caching of analyses in a basic way across all the pass managers. These in turn uncovered two more bugs where we failed to correctly invalidate an analysis -- its results were invalidated but the key for re-running the pass was never cleared and so it was never re-run. Quite nasty. I'm very glad to debug this here rather than with a full system. Also, yes, the naming here is horrid. I'm going to update some of the names to be slightly less awful shortly. But really, I've no "good" ideas for naming. I'll be satisfied if I can get it to "not bad". llvm-svn: 225246
2015-01-06 12:49:44 +08:00
; RUN: -passes='cgscc(require<no-op-cgscc>,invalidate<no-op-cgscc>,require<no-op-cgscc>)' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-DO-INVALIDATE-CGSCC-ANALYSIS-RESULTS
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-DO-INVALIDATE-CGSCC-ANALYSIS-RESULTS: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-DO-INVALIDATE-CGSCC-ANALYSIS-RESULTS: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-DO-INVALIDATE-CGSCC-ANALYSIS-RESULTS: Running analysis: NoOpCGSCCAnalysis
; CHECK-DO-INVALIDATE-CGSCC-ANALYSIS-RESULTS: Invalidating analysis: NoOpCGSCCAnalysis
; CHECK-DO-INVALIDATE-CGSCC-ANALYSIS-RESULTS: Running analysis: NoOpCGSCCAnalysis
[PM] Add a utility pass template that synthesizes the invalidation of a specific analysis result. This is quite handy to test things, and will also likely be very useful for debugging issues. You could narrow down pass validation failures by walking these invalidate pass runs up and down the pass pipeline, etc. I've added support to the pass pipeline parsing to be able to create one of these for any analysis pass desired. Just adding this class uncovered one latent bug where the AnalysisManager CRTP base class had a hard-coded Module type rather than using IRUnitT. I've also added tests for invalidation and caching of analyses in a basic way across all the pass managers. These in turn uncovered two more bugs where we failed to correctly invalidate an analysis -- its results were invalidated but the key for re-running the pass was never cleared and so it was never re-run. Quite nasty. I'm very glad to debug this here rather than with a full system. Also, yes, the naming here is horrid. I'm going to update some of the names to be slightly less awful shortly. But really, I've no "good" ideas for naming. I'll be satisfied if I can get it to "not bad". llvm-svn: 225246
2015-01-06 12:49:44 +08:00
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -debug-pass-manager \
[PM] Add a utility pass template that synthesizes the invalidation of a specific analysis result. This is quite handy to test things, and will also likely be very useful for debugging issues. You could narrow down pass validation failures by walking these invalidate pass runs up and down the pass pipeline, etc. I've added support to the pass pipeline parsing to be able to create one of these for any analysis pass desired. Just adding this class uncovered one latent bug where the AnalysisManager CRTP base class had a hard-coded Module type rather than using IRUnitT. I've also added tests for invalidation and caching of analyses in a basic way across all the pass managers. These in turn uncovered two more bugs where we failed to correctly invalidate an analysis -- its results were invalidated but the key for re-running the pass was never cleared and so it was never re-run. Quite nasty. I'm very glad to debug this here rather than with a full system. Also, yes, the naming here is horrid. I'm going to update some of the names to be slightly less awful shortly. But really, I've no "good" ideas for naming. I'll be satisfied if I can get it to "not bad". llvm-svn: 225246
2015-01-06 12:49:44 +08:00
; RUN: -passes='function(require<no-op-function>,require<no-op-function>,require<no-op-function>)' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-DO-CACHE-FUNCTION-ANALYSIS-RESULTS
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-DO-CACHE-FUNCTION-ANALYSIS-RESULTS: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-DO-CACHE-FUNCTION-ANALYSIS-RESULTS: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-DO-CACHE-FUNCTION-ANALYSIS-RESULTS: Running analysis: NoOpFunctionAnalysis
; CHECK-DO-CACHE-FUNCTION-ANALYSIS-RESULTS-NOT: Running analysis: NoOpFunctionAnalysis
[PM] Add a utility pass template that synthesizes the invalidation of a specific analysis result. This is quite handy to test things, and will also likely be very useful for debugging issues. You could narrow down pass validation failures by walking these invalidate pass runs up and down the pass pipeline, etc. I've added support to the pass pipeline parsing to be able to create one of these for any analysis pass desired. Just adding this class uncovered one latent bug where the AnalysisManager CRTP base class had a hard-coded Module type rather than using IRUnitT. I've also added tests for invalidation and caching of analyses in a basic way across all the pass managers. These in turn uncovered two more bugs where we failed to correctly invalidate an analysis -- its results were invalidated but the key for re-running the pass was never cleared and so it was never re-run. Quite nasty. I'm very glad to debug this here rather than with a full system. Also, yes, the naming here is horrid. I'm going to update some of the names to be slightly less awful shortly. But really, I've no "good" ideas for naming. I'll be satisfied if I can get it to "not bad". llvm-svn: 225246
2015-01-06 12:49:44 +08:00
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -debug-pass-manager \
[PM] Add a utility pass template that synthesizes the invalidation of a specific analysis result. This is quite handy to test things, and will also likely be very useful for debugging issues. You could narrow down pass validation failures by walking these invalidate pass runs up and down the pass pipeline, etc. I've added support to the pass pipeline parsing to be able to create one of these for any analysis pass desired. Just adding this class uncovered one latent bug where the AnalysisManager CRTP base class had a hard-coded Module type rather than using IRUnitT. I've also added tests for invalidation and caching of analyses in a basic way across all the pass managers. These in turn uncovered two more bugs where we failed to correctly invalidate an analysis -- its results were invalidated but the key for re-running the pass was never cleared and so it was never re-run. Quite nasty. I'm very glad to debug this here rather than with a full system. Also, yes, the naming here is horrid. I'm going to update some of the names to be slightly less awful shortly. But really, I've no "good" ideas for naming. I'll be satisfied if I can get it to "not bad". llvm-svn: 225246
2015-01-06 12:49:44 +08:00
; RUN: -passes='function(require<no-op-function>,invalidate<no-op-function>,require<no-op-function>)' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-DO-INVALIDATE-FUNCTION-ANALYSIS-RESULTS
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-DO-INVALIDATE-FUNCTION-ANALYSIS-RESULTS: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-DO-INVALIDATE-FUNCTION-ANALYSIS-RESULTS: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-DO-INVALIDATE-FUNCTION-ANALYSIS-RESULTS: Running analysis: NoOpFunctionAnalysis
; CHECK-DO-INVALIDATE-FUNCTION-ANALYSIS-RESULTS: Invalidating analysis: NoOpFunctionAnalysis
; CHECK-DO-INVALIDATE-FUNCTION-ANALYSIS-RESULTS: Running analysis: NoOpFunctionAnalysis
[PM] Add a utility pass template that synthesizes the invalidation of a specific analysis result. This is quite handy to test things, and will also likely be very useful for debugging issues. You could narrow down pass validation failures by walking these invalidate pass runs up and down the pass pipeline, etc. I've added support to the pass pipeline parsing to be able to create one of these for any analysis pass desired. Just adding this class uncovered one latent bug where the AnalysisManager CRTP base class had a hard-coded Module type rather than using IRUnitT. I've also added tests for invalidation and caching of analyses in a basic way across all the pass managers. These in turn uncovered two more bugs where we failed to correctly invalidate an analysis -- its results were invalidated but the key for re-running the pass was never cleared and so it was never re-run. Quite nasty. I'm very glad to debug this here rather than with a full system. Also, yes, the naming here is horrid. I'm going to update some of the names to be slightly less awful shortly. But really, I've no "good" ideas for naming. I'll be satisfied if I can get it to "not bad". llvm-svn: 225246
2015-01-06 12:49:44 +08:00
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager \
[PM] Fix a pretty nasty bug where the new pass manager would invalidate passes too many time. I think this is actually the issue that someone raised with me at the developer's meeting and in an email, but that we never really got to the bottom of. Having all the testing utilities made it much easier to dig down and uncover the core issue. When a pass manager is running many passes over a single function, we need it to invalidate the analyses between each run so that they can be re-computed as needed. We also need to track the intersection of preserved higher-level analyses across all the passes that we run (for example, if there is one module analysis which all the function analyses preserve, we want to track that and propagate it). Unfortunately, this interacted poorly with any enclosing pass adaptor between two IR units. It would see the intersection of preserved analyses, and need to invalidate any other analyses, but some of the un-preserved analyses might have already been invalidated *and recomputed*! We would fail to propagate the fact that the analysis had already been invalidated. The solution to this struck me as really strange at first, but the more I thought about it, the more natural it seemed. After a nice discussion with Duncan about it on IRC, it seemed even nicer. The idea is that invalidating an analysis *causes* it to be preserved! Preserving the lack of result is trivial. If it is recomputed, great. Until something *else* invalidates it again, we're good. The consequence of this is that the invalidate methods on the analysis manager which operate over many passes now consume their PreservedAnalyses object, update it to "preserve" every analysis pass to which it delivers an invalidation (regardless of whether the pass chooses to be removed, or handles the invalidation itself by updating itself). Then we return this augmented set from the invalidate routine, letting the pass manager take the result and use the intersection of *that* across each pass run to compute the final preserved set. This accounts for all the places where the early invalidation of an analysis has already "preserved" it for a future run. I've beefed up the testing and adjusted the assertions to show that we no longer repeatedly invalidate or compute the analyses across nested pass managers. llvm-svn: 225333
2015-01-07 09:58:35 +08:00
; RUN: -passes='require<no-op-module>,module(require<no-op-module>,function(require<no-op-function>,invalidate<all>,require<no-op-function>),require<no-op-module>),require<no-op-module>' %s 2>&1 \
[PM] Introduce a utility pass that preserves no analyses. Use this to test that path of invalidation. This test actually shows redundant invalidation here that is really bad. I'm going to work on fixing that next, but wanted to commit the test harness now that its all working. llvm-svn: 225257
2015-01-06 17:06:35 +08:00
; RUN: | FileCheck %s --check-prefix=CHECK-INVALIDATE-ALL
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-INVALIDATE-ALL: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL: Running analysis: NoOpModuleAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-INVALIDATE-ALL: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-NOT: Running analysis: NoOpModuleAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-INVALIDATE-ALL: Starting llvm::Function pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL: Running analysis: NoOpFunctionAnalysis
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL: Running pass: InvalidateAllAnalysesPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL: Invalidating analysis: NoOpFunctionAnalysis
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL: Running analysis: NoOpFunctionAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-INVALIDATE-ALL: Finished llvm::Function pass manager run
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL: Invalidating analysis: NoOpModuleAnalysis
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL: Running analysis: NoOpModuleAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-INVALIDATE-ALL: Finished llvm::Module pass manager run
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-NOT: Invalidating analysis: NoOpModuleAnalysis
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-NOT: Running analysis: NoOpModuleAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-INVALIDATE-ALL: Finished llvm::Module pass manager run
[PM] Fix a pretty nasty bug where the new pass manager would invalidate passes too many time. I think this is actually the issue that someone raised with me at the developer's meeting and in an email, but that we never really got to the bottom of. Having all the testing utilities made it much easier to dig down and uncover the core issue. When a pass manager is running many passes over a single function, we need it to invalidate the analyses between each run so that they can be re-computed as needed. We also need to track the intersection of preserved higher-level analyses across all the passes that we run (for example, if there is one module analysis which all the function analyses preserve, we want to track that and propagate it). Unfortunately, this interacted poorly with any enclosing pass adaptor between two IR units. It would see the intersection of preserved analyses, and need to invalidate any other analyses, but some of the un-preserved analyses might have already been invalidated *and recomputed*! We would fail to propagate the fact that the analysis had already been invalidated. The solution to this struck me as really strange at first, but the more I thought about it, the more natural it seemed. After a nice discussion with Duncan about it on IRC, it seemed even nicer. The idea is that invalidating an analysis *causes* it to be preserved! Preserving the lack of result is trivial. If it is recomputed, great. Until something *else* invalidates it again, we're good. The consequence of this is that the invalidate methods on the analysis manager which operate over many passes now consume their PreservedAnalyses object, update it to "preserve" every analysis pass to which it delivers an invalidation (regardless of whether the pass chooses to be removed, or handles the invalidation itself by updating itself). Then we return this augmented set from the invalidate routine, letting the pass manager take the result and use the intersection of *that* across each pass run to compute the final preserved set. This accounts for all the places where the early invalidation of an analysis has already "preserved" it for a future run. I've beefed up the testing and adjusted the assertions to show that we no longer repeatedly invalidate or compute the analyses across nested pass managers. llvm-svn: 225333
2015-01-07 09:58:35 +08:00
[PM] Remove the defunt CGSCC-specific debug flag. Even before I sunk the debug flag into the opt tool this had been made obsolete by factoring the pass and analysis managers into a single set of templates that all used the core flag. No functionality changed here. llvm-svn: 225842
2015-01-14 06:45:13 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager \
[PM] Fix a pretty nasty bug where the new pass manager would invalidate passes too many time. I think this is actually the issue that someone raised with me at the developer's meeting and in an email, but that we never really got to the bottom of. Having all the testing utilities made it much easier to dig down and uncover the core issue. When a pass manager is running many passes over a single function, we need it to invalidate the analyses between each run so that they can be re-computed as needed. We also need to track the intersection of preserved higher-level analyses across all the passes that we run (for example, if there is one module analysis which all the function analyses preserve, we want to track that and propagate it). Unfortunately, this interacted poorly with any enclosing pass adaptor between two IR units. It would see the intersection of preserved analyses, and need to invalidate any other analyses, but some of the un-preserved analyses might have already been invalidated *and recomputed*! We would fail to propagate the fact that the analysis had already been invalidated. The solution to this struck me as really strange at first, but the more I thought about it, the more natural it seemed. After a nice discussion with Duncan about it on IRC, it seemed even nicer. The idea is that invalidating an analysis *causes* it to be preserved! Preserving the lack of result is trivial. If it is recomputed, great. Until something *else* invalidates it again, we're good. The consequence of this is that the invalidate methods on the analysis manager which operate over many passes now consume their PreservedAnalyses object, update it to "preserve" every analysis pass to which it delivers an invalidation (regardless of whether the pass chooses to be removed, or handles the invalidation itself by updating itself). Then we return this augmented set from the invalidate routine, letting the pass manager take the result and use the intersection of *that* across each pass run to compute the final preserved set. This accounts for all the places where the early invalidation of an analysis has already "preserved" it for a future run. I've beefed up the testing and adjusted the assertions to show that we no longer repeatedly invalidate or compute the analyses across nested pass managers. llvm-svn: 225333
2015-01-07 09:58:35 +08:00
; RUN: -passes='require<no-op-module>,module(require<no-op-module>,cgscc(require<no-op-cgscc>,function(require<no-op-function>,invalidate<all>,require<no-op-function>),require<no-op-cgscc>),require<no-op-module>),require<no-op-module>' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-INVALIDATE-ALL-CG
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-INVALIDATE-ALL-CG: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL-CG: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-CG: Running analysis: NoOpModuleAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-INVALIDATE-ALL-CG: Starting llvm::Module pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL-CG: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-CG-NOT: Running analysis: NoOpModuleAnalysis
[PM] Introduce basic update capabilities to the new PM's CGSCC pass manager, including both plumbing and logic to handle function pass updates. There are three fundamentally tied changes here: 1) Plumbing *some* mechanism for updating the CGSCC pass manager as the CG changes while passes are running. 2) Changing the CGSCC pass manager infrastructure to have support for the underlying graph to mutate mid-pass run. 3) Actually updating the CG after function passes run. I can separate them if necessary, but I think its really useful to have them together as the needs of #3 drove #2, and that in turn drove #1. The plumbing technique is to extend the "run" method signature with extra arguments. We provide the call graph that intrinsically is available as it is the basis of the pass manager's IR units, and an output parameter that records the results of updating the call graph during an SCC passes's run. Note that "...UpdateResult" isn't a *great* name here... suggestions very welcome. I tried a pretty frustrating number of different data structures and such for the innards of the update result. Every other one failed for one reason or another. Sometimes I just couldn't keep the layers of complexity right in my head. The thing that really worked was to just directly provide access to the underlying structures used to walk the call graph so that their updates could be informed by the *particular* nature of the change to the graph. The technique for how to make the pass management infrastructure cope with mutating graphs was also something that took a really, really large number of iterations to get to a place where I was happy. Here are some of the considerations that drove the design: - We operate at three levels within the infrastructure: RefSCC, SCC, and Node. In each case, we are working bottom up and so we want to continue to iterate on the "lowest" node as the graph changes. Look at how we iterate over nodes in an SCC running function passes as those function passes mutate the CG. We continue to iterate on the "lowest" SCC, which is the one that continues to contain the function just processed. - The call graph structure re-uses SCCs (and RefSCCs) during mutation events for the *highest* entry in the resulting new subgraph, not the lowest. This means that it is necessary to continually update the current SCC or RefSCC as it shifts. This is really surprising and subtle, and took a long time for me to work out. I actually tried changing the call graph to provide the opposite behavior, and it breaks *EVERYTHING*. The graph update algorithms are really deeply tied to this particualr pattern. - When SCCs or RefSCCs are split apart and refined and we continually re-pin our processing to the bottom one in the subgraph, we need to enqueue the newly formed SCCs and RefSCCs for subsequent processing. Queuing them presents a few challenges: 1) SCCs and RefSCCs use wildly different iteration strategies at a high level. We end up needing to converge them on worklist approaches that can be extended in order to be able to handle the mutations. 2) The order of the enqueuing need to remain bottom-up post-order so that we don't get surprising order of visitation for things like the inliner. 3) We need the worklists to have set semantics so we don't duplicate things endlessly. We don't need a *persistent* set though because we always keep processing the bottom node!!!! This is super, super surprising to me and took a long time to convince myself this is correct, but I'm pretty sure it is... Once we sink down to the bottom node, we can't re-split out the same node in any way, and the postorder of the current queue is fixed and unchanging. 4) We need to make sure that the "current" SCC or RefSCC actually gets enqueued here such that we re-visit it because we continue processing a *new*, *bottom* SCC/RefSCC. - We also need the ability to *skip* SCCs and RefSCCs that get merged into a larger component. We even need the ability to skip *nodes* from an SCC that are no longer part of that SCC. This led to the design you see in the patch which uses SetVector-based worklists. The RefSCC worklist is always empty until an update occurs and is just used to handle those RefSCCs created by updates as the others don't even exist yet and are formed on-demand during the bottom-up walk. The SCC worklist is pre-populated from the RefSCC, and we push new SCCs onto it and blacklist existing SCCs on it to get the desired processing. We then *directly* update these when updating the call graph as I was never able to find a satisfactory abstraction around the update strategy. Finally, we need to compute the updates for function passes. This is mostly used as an initial customer of all the update mechanisms to drive their design to at least cover some real set of use cases. There are a bunch of interesting things that came out of doing this: - It is really nice to do this a function at a time because that function is likely hot in the cache. This means we want even the function pass adaptor to support online updates to the call graph! - To update the call graph after arbitrary function pass mutations is quite hard. We have to build a fairly comprehensive set of data structures and then process them. Fortunately, some of this code is related to the code for building the cal graph in the first place. Unfortunately, very little of it makes any sense to share because the nature of what we're doing is so very different. I've factored out the one part that made sense at least. - We need to transfer these updates into the various structures for the CGSCC pass manager. Once those were more sanely worked out, this became relatively easier. But some of those needs necessitated changes to the LazyCallGraph interface to make it significantly easier to extract the changed SCCs from an update operation. - We also need to update the CGSCC analysis manager as the shape of the graph changes. When an SCC is merged away we need to clear analyses associated with it from the analysis manager which we didn't have support for in the analysis manager infrsatructure. New SCCs are easy! But then we have the case that the original SCC has its shape changed but remains in the call graph. There we need to *invalidate* the analyses associated with it. - We also need to invalidate analyses after we *finish* processing an SCC. But the analyses we need to invalidate here are *only those for the newly updated SCC*!!! Because we only continue processing the bottom SCC, if we split SCCs apart the original one gets invalidated once when its shape changes and is not processed farther so its analyses will be correct. It is the bottom SCC which continues being processed and needs to have the "normal" invalidation done based on the preserved analyses set. All of this is mostly background and context for the changes here. Many thanks to all the reviewers who helped here. Especially Sanjoy who caught several interesting bugs in the graph algorithms, David, Sean, and others who all helped with feedback. Differential Revision: http://reviews.llvm.org/D21464 llvm-svn: 279618
2016-08-24 17:37:14 +08:00
; CHECK-INVALIDATE-ALL-CG: Starting CGSCC pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL-CG: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-CG: Running analysis: NoOpCGSCCAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-INVALIDATE-ALL-CG: Starting llvm::Function pass manager run
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL-CG: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-CG: Running analysis: NoOpFunctionAnalysis
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL-CG: Running pass: InvalidateAllAnalysesPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-CG: Invalidating analysis: NoOpFunctionAnalysis
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL-CG: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-CG: Running analysis: NoOpFunctionAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-INVALIDATE-ALL-CG: Finished llvm::Function pass manager run
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-CG-NOT: Running analysis: NoOpFunctionAnalysis
; CHECK-INVALIDATE-ALL-CG: Invalidating analysis: NoOpCGSCCAnalysis
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL-CG: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-CG: Running analysis: NoOpCGSCCAnalysis
[PM] Introduce basic update capabilities to the new PM's CGSCC pass manager, including both plumbing and logic to handle function pass updates. There are three fundamentally tied changes here: 1) Plumbing *some* mechanism for updating the CGSCC pass manager as the CG changes while passes are running. 2) Changing the CGSCC pass manager infrastructure to have support for the underlying graph to mutate mid-pass run. 3) Actually updating the CG after function passes run. I can separate them if necessary, but I think its really useful to have them together as the needs of #3 drove #2, and that in turn drove #1. The plumbing technique is to extend the "run" method signature with extra arguments. We provide the call graph that intrinsically is available as it is the basis of the pass manager's IR units, and an output parameter that records the results of updating the call graph during an SCC passes's run. Note that "...UpdateResult" isn't a *great* name here... suggestions very welcome. I tried a pretty frustrating number of different data structures and such for the innards of the update result. Every other one failed for one reason or another. Sometimes I just couldn't keep the layers of complexity right in my head. The thing that really worked was to just directly provide access to the underlying structures used to walk the call graph so that their updates could be informed by the *particular* nature of the change to the graph. The technique for how to make the pass management infrastructure cope with mutating graphs was also something that took a really, really large number of iterations to get to a place where I was happy. Here are some of the considerations that drove the design: - We operate at three levels within the infrastructure: RefSCC, SCC, and Node. In each case, we are working bottom up and so we want to continue to iterate on the "lowest" node as the graph changes. Look at how we iterate over nodes in an SCC running function passes as those function passes mutate the CG. We continue to iterate on the "lowest" SCC, which is the one that continues to contain the function just processed. - The call graph structure re-uses SCCs (and RefSCCs) during mutation events for the *highest* entry in the resulting new subgraph, not the lowest. This means that it is necessary to continually update the current SCC or RefSCC as it shifts. This is really surprising and subtle, and took a long time for me to work out. I actually tried changing the call graph to provide the opposite behavior, and it breaks *EVERYTHING*. The graph update algorithms are really deeply tied to this particualr pattern. - When SCCs or RefSCCs are split apart and refined and we continually re-pin our processing to the bottom one in the subgraph, we need to enqueue the newly formed SCCs and RefSCCs for subsequent processing. Queuing them presents a few challenges: 1) SCCs and RefSCCs use wildly different iteration strategies at a high level. We end up needing to converge them on worklist approaches that can be extended in order to be able to handle the mutations. 2) The order of the enqueuing need to remain bottom-up post-order so that we don't get surprising order of visitation for things like the inliner. 3) We need the worklists to have set semantics so we don't duplicate things endlessly. We don't need a *persistent* set though because we always keep processing the bottom node!!!! This is super, super surprising to me and took a long time to convince myself this is correct, but I'm pretty sure it is... Once we sink down to the bottom node, we can't re-split out the same node in any way, and the postorder of the current queue is fixed and unchanging. 4) We need to make sure that the "current" SCC or RefSCC actually gets enqueued here such that we re-visit it because we continue processing a *new*, *bottom* SCC/RefSCC. - We also need the ability to *skip* SCCs and RefSCCs that get merged into a larger component. We even need the ability to skip *nodes* from an SCC that are no longer part of that SCC. This led to the design you see in the patch which uses SetVector-based worklists. The RefSCC worklist is always empty until an update occurs and is just used to handle those RefSCCs created by updates as the others don't even exist yet and are formed on-demand during the bottom-up walk. The SCC worklist is pre-populated from the RefSCC, and we push new SCCs onto it and blacklist existing SCCs on it to get the desired processing. We then *directly* update these when updating the call graph as I was never able to find a satisfactory abstraction around the update strategy. Finally, we need to compute the updates for function passes. This is mostly used as an initial customer of all the update mechanisms to drive their design to at least cover some real set of use cases. There are a bunch of interesting things that came out of doing this: - It is really nice to do this a function at a time because that function is likely hot in the cache. This means we want even the function pass adaptor to support online updates to the call graph! - To update the call graph after arbitrary function pass mutations is quite hard. We have to build a fairly comprehensive set of data structures and then process them. Fortunately, some of this code is related to the code for building the cal graph in the first place. Unfortunately, very little of it makes any sense to share because the nature of what we're doing is so very different. I've factored out the one part that made sense at least. - We need to transfer these updates into the various structures for the CGSCC pass manager. Once those were more sanely worked out, this became relatively easier. But some of those needs necessitated changes to the LazyCallGraph interface to make it significantly easier to extract the changed SCCs from an update operation. - We also need to update the CGSCC analysis manager as the shape of the graph changes. When an SCC is merged away we need to clear analyses associated with it from the analysis manager which we didn't have support for in the analysis manager infrsatructure. New SCCs are easy! But then we have the case that the original SCC has its shape changed but remains in the call graph. There we need to *invalidate* the analyses associated with it. - We also need to invalidate analyses after we *finish* processing an SCC. But the analyses we need to invalidate here are *only those for the newly updated SCC*!!! Because we only continue processing the bottom SCC, if we split SCCs apart the original one gets invalidated once when its shape changes and is not processed farther so its analyses will be correct. It is the bottom SCC which continues being processed and needs to have the "normal" invalidation done based on the preserved analyses set. All of this is mostly background and context for the changes here. Many thanks to all the reviewers who helped here. Especially Sanjoy who caught several interesting bugs in the graph algorithms, David, Sean, and others who all helped with feedback. Differential Revision: http://reviews.llvm.org/D21464 llvm-svn: 279618
2016-08-24 17:37:14 +08:00
; CHECK-INVALIDATE-ALL-CG: Finished CGSCC pass manager run
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-CG-NOT: Invalidating analysis: NoOpCGSCCAnalysis
; CHECK-INVALIDATE-ALL-CG: Invalidating analysis: NoOpModuleAnalysis
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL-CG: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-CG: Running analysis: NoOpModuleAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-INVALIDATE-ALL-CG: Finished llvm::Module pass manager run
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-CG-NOT: Invalidating analysis: NoOpModuleAnalysis
[PM] Refactor the new pass manager to use a single template to implement the generic functionality of the pass managers themselves. In the new infrastructure, the pass "manager" isn't actually interesting at all. It just pipelines a single chunk of IR through N passes. We don't need to know anything about the IR or the passes to do this really and we can replace the 3 implementations of the exact same functionality with a single generic PassManager template, complementing the single generic AnalysisManager template. I've left typedefs in place to give convenient names to the various obvious instantiations of the template. With this, I think I've nuked almost all of the redundant logic in the managers, and I think the overall design is actually simpler for having single templates that clearly indicate there is no special logic here. The logging is made somewhat more annoying by this change, but I don't think the difference is worth having heavy-weight traits to help log things. llvm-svn: 225783
2015-01-13 19:13:56 +08:00
; CHECK-INVALIDATE-ALL-CG: Running pass: RequireAnalysisPass
[PM] Fold all three analysis managers into a single AnalysisManager template. This consolidates three copies of nearly the same core logic. It adds "complexity" to the ModuleAnalysisManager in that it makes it possible to share a ModuleAnalysisManager across multiple modules... But it does so by deleting *all of the code*, so I'm OK with that. This will naturally make fixing bugs in this code much simpler, etc. The only down side here is that we have to use 'typename' and 'this->' in various places, and the implementation is lifted into the header. I'll take that for the code size reduction. The convenient names are still typedef-ed and used throughout so that users can largely ignore this aspect of the implementation. The follow-up change to this will do the exact same refactoring for the PassManagers. =D It turns out that the interesting different code is almost entirely in the adaptors. At the end, that should be essentially all that is left. llvm-svn: 225757
2015-01-13 10:51:47 +08:00
; CHECK-INVALIDATE-ALL-CG-NOT: Running analysis: NoOpModuleAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-INVALIDATE-ALL-CG: Finished llvm::Module pass manager run
[PM] Introduce a utility pass that preserves no analyses. Use this to test that path of invalidation. This test actually shows redundant invalidation here that is really bad. I'm going to work on fixing that next, but wanted to commit the test harness now that its all working. llvm-svn: 225257
2015-01-06 17:06:35 +08:00
[PM] Port TargetLibraryInfo to the new pass manager, provided by the TargetLibraryAnalysis pass. There are actually no direct tests of this already in the tree. I've added the most basic test that the pass manager bits themselves work, and the TLI object produced will be tested by an upcoming patches as they port passes which rely on TLI. This is starting to point out the awkwardness of the invalidate API -- it seems poorly fitting on the *result* object. I suspect I will change it to live on the analysis instead, but that's not for this change, and I'd rather have a few more passes ported in order to have more experience with how this plays out. I believe there is only one more analysis required in order to start porting instcombine. =] llvm-svn: 226160
2015-01-15 19:39:46 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
; RUN: -passes='require<targetlibinfo>,invalidate<all>,require<targetlibinfo>' \
; RUN: | FileCheck %s --check-prefix=CHECK-TLI
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-TLI: Starting llvm::Module pass manager run
[PM] Port TargetLibraryInfo to the new pass manager, provided by the TargetLibraryAnalysis pass. There are actually no direct tests of this already in the tree. I've added the most basic test that the pass manager bits themselves work, and the TLI object produced will be tested by an upcoming patches as they port passes which rely on TLI. This is starting to point out the awkwardness of the invalidate API -- it seems poorly fitting on the *result* object. I suspect I will change it to live on the analysis instead, but that's not for this change, and I'd rather have a few more passes ported in order to have more experience with how this plays out. I believe there is only one more analysis required in order to start porting instcombine. =] llvm-svn: 226160
2015-01-15 19:39:46 +08:00
; CHECK-TLI: Running pass: RequireAnalysisPass
; CHECK-TLI: Running analysis: TargetLibraryAnalysis
; CHECK-TLI: Running pass: InvalidateAllAnalysesPass
; CHECK-TLI-NOT: Invalidating analysis: TargetLibraryAnalysis
; CHECK-TLI: Running pass: RequireAnalysisPass
; CHECK-TLI-NOT: Running analysis: TargetLibraryAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-TLI: Finished llvm::Module pass manager run
[PM] Port TargetLibraryInfo to the new pass manager, provided by the TargetLibraryAnalysis pass. There are actually no direct tests of this already in the tree. I've added the most basic test that the pass manager bits themselves work, and the TLI object produced will be tested by an upcoming patches as they port passes which rely on TLI. This is starting to point out the awkwardness of the invalidate API -- it seems poorly fitting on the *result* object. I suspect I will change it to live on the analysis instead, but that's not for this change, and I'd rather have a few more passes ported in order to have more experience with how this plays out. I believe there is only one more analysis required in order to start porting instcombine. =] llvm-svn: 226160
2015-01-15 19:39:46 +08:00
[PM] Port TTI to the new pass manager, introducing a TargetIRAnalysis to produce it. This adds a function to the TargetMachine that produces this analysis via a callback for each function. This in turn faves the way to produce a *different* TTI per-function with the correct subtarget cached. I've also done the necessary wiring in the opt tool to thread the target machine down and make it available to the pass registry so that we can construct this analysis from a target machine when available. llvm-svn: 227721
2015-02-01 18:11:22 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
; RUN: -passes='require<targetir>,invalidate<all>,require<targetir>' \
; RUN: | FileCheck %s --check-prefix=CHECK-TIRA
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-TIRA: Starting llvm::Module pass manager run
[PM] Port TTI to the new pass manager, introducing a TargetIRAnalysis to produce it. This adds a function to the TargetMachine that produces this analysis via a callback for each function. This in turn faves the way to produce a *different* TTI per-function with the correct subtarget cached. I've also done the necessary wiring in the opt tool to thread the target machine down and make it available to the pass registry so that we can construct this analysis from a target machine when available. llvm-svn: 227721
2015-02-01 18:11:22 +08:00
; CHECK-TIRA: Running pass: RequireAnalysisPass
; CHECK-TIRA: Running analysis: TargetIRAnalysis
; CHECK-TIRA: Running pass: InvalidateAllAnalysesPass
; CHECK-TIRA-NOT: Invalidating analysis: TargetIRAnalysis
; CHECK-TIRA: Running pass: RequireAnalysisPass
; CHECK-TIRA-NOT: Running analysis: TargetIRAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-TIRA: Finished llvm::Module pass manager run
[PM] Port TTI to the new pass manager, introducing a TargetIRAnalysis to produce it. This adds a function to the TargetMachine that produces this analysis via a callback for each function. This in turn faves the way to produce a *different* TTI per-function with the correct subtarget cached. I've also done the necessary wiring in the opt tool to thread the target machine down and make it available to the pass registry so that we can construct this analysis from a target machine when available. llvm-svn: 227721
2015-02-01 18:11:22 +08:00
[PM] Teach the module-to-function adaptor to not run function passes over declarations. This is both quite unproductive and causes things to crash, for example domtree would just assert. I've added a declaration and a domtree run to the basic high-level tests for the new pass manager. llvm-svn: 227724
2015-02-01 18:47:25 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
; RUN: -passes='require<domtree>' \
; RUN: | FileCheck %s --check-prefix=CHECK-DT
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-DT: Starting llvm::Module pass manager run
[PM] Teach the module-to-function adaptor to not run function passes over declarations. This is both quite unproductive and causes things to crash, for example domtree would just assert. I've added a declaration and a domtree run to the basic high-level tests for the new pass manager. llvm-svn: 227724
2015-02-01 18:47:25 +08:00
; CHECK-DT: Running pass: RequireAnalysisPass
; CHECK-DT: Running analysis: DominatorTreeAnalysis
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-DT: Finished llvm::Module pass manager run
[PM] Teach the module-to-function adaptor to not run function passes over declarations. This is both quite unproductive and causes things to crash, for example domtree would just assert. I've added a declaration and a domtree run to the basic high-level tests for the new pass manager. llvm-svn: 227724
2015-02-01 18:47:25 +08:00
[PM/AA] Wire BasicAA's new pass manager class up to the pass registry. This ensures that all of the various pieces are working. The next patch will wire up commandline-driven alias analysis chain building and allow BasicAA to work with the AAManager. llvm-svn: 260838
2016-02-14 07:46:24 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
; RUN: -passes='require<basic-aa>' \
; RUN: | FileCheck %s --check-prefix=CHECK-BASIC-AA
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-BASIC-AA: Starting llvm::Module pass manager run
[PM/AA] Wire BasicAA's new pass manager class up to the pass registry. This ensures that all of the various pieces are working. The next patch will wire up commandline-driven alias analysis chain building and allow BasicAA to work with the AAManager. llvm-svn: 260838
2016-02-14 07:46:24 +08:00
; CHECK-BASIC-AA: Running pass: RequireAnalysisPass
; CHECK-BASIC-AA: Running analysis: BasicAA
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-BASIC-AA: Finished llvm::Module pass manager run
[PM/AA] Wire BasicAA's new pass manager class up to the pass registry. This ensures that all of the various pieces are working. The next patch will wire up commandline-driven alias analysis chain building and allow BasicAA to work with the AAManager. llvm-svn: 260838
2016-02-14 07:46:24 +08:00
[PM/AA] Teach the new pass manager to use pass-by-lambda for registering analysis passes, support pre-registering analyses, and use that to implement parsing and pre-registering a custom alias analysis pipeline. With this its possible to configure the particular alias analysis pipeline used by the AAManager from the commandline of opt. I've updated the test to show this effectively in use to build a pipeline including basic-aa as part of it. My big question for reviewers are around the APIs that are used to expose this functionality. Are folks happy with pass-by-lambda to do pass registration? Are folks happy with pre-registering analyses as a way to inject customized instances of an analysis while still using the registry for the general case? Other thoughts of course welcome. The next round of patches will be to add the rest of the alias analyses into the new pass manager and wire them up here so that they can be used from opt. This will require extending the (somewhate limited) functionality of AAManager w.r.t. module passes. Differential Revision: http://reviews.llvm.org/D17259 llvm-svn: 261197
2016-02-18 17:45:17 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
; RUN: -passes='require<aa>' -aa-pipeline='basic-aa' \
; RUN: | FileCheck %s --check-prefix=CHECK-AA
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-AA: Starting llvm::Module pass manager run
[PM/AA] Teach the new pass manager to use pass-by-lambda for registering analysis passes, support pre-registering analyses, and use that to implement parsing and pre-registering a custom alias analysis pipeline. With this its possible to configure the particular alias analysis pipeline used by the AAManager from the commandline of opt. I've updated the test to show this effectively in use to build a pipeline including basic-aa as part of it. My big question for reviewers are around the APIs that are used to expose this functionality. Are folks happy with pass-by-lambda to do pass registration? Are folks happy with pre-registering analyses as a way to inject customized instances of an analysis while still using the registry for the general case? Other thoughts of course welcome. The next round of patches will be to add the rest of the alias analyses into the new pass manager and wire them up here so that they can be used from opt. This will require extending the (somewhate limited) functionality of AAManager w.r.t. module passes. Differential Revision: http://reviews.llvm.org/D17259 llvm-svn: 261197
2016-02-18 17:45:17 +08:00
; CHECK-AA: Running pass: RequireAnalysisPass
; CHECK-AA: Running analysis: AAManager
; CHECK-AA: Running analysis: BasicAA
[PM] Add the IR unit type to the pass manager's logging and make all of the testing more more explicit. This will currently fail on platforms without support for getTypeName. While an assert failure seems too harsh, I'm hoping we're OK with the regression test failure, and I'd like to find out about what platforms actually exist in this state if there are any so we can get implementations in place for them. But if we just can't fix all the host compilers to have a reasonably portable variant of getTypeName and are worried about xfailing this test on those platforms, I can add the horrible regular expression magic to make the tests support "unknown" here as well. llvm-svn: 261853
2016-02-25 18:27:39 +08:00
; CHECK-AA: Finished llvm::Module pass manager run
[PM/AA] Teach the new pass manager to use pass-by-lambda for registering analysis passes, support pre-registering analyses, and use that to implement parsing and pre-registering a custom alias analysis pipeline. With this its possible to configure the particular alias analysis pipeline used by the AAManager from the commandline of opt. I've updated the test to show this effectively in use to build a pipeline including basic-aa as part of it. My big question for reviewers are around the APIs that are used to expose this functionality. Are folks happy with pass-by-lambda to do pass registration? Are folks happy with pre-registering analyses as a way to inject customized instances of an analysis while still using the registry for the general case? Other thoughts of course welcome. The next round of patches will be to add the rest of the alias analyses into the new pass manager and wire them up here so that they can be used from opt. This will require extending the (somewhate limited) functionality of AAManager w.r.t. module passes. Differential Revision: http://reviews.llvm.org/D17259 llvm-svn: 261197
2016-02-18 17:45:17 +08:00
[PM] Add support for building a default AA pipeline to the PassBuilder. Pretty boring and lame as-is but necessary. This is definitely a place we'll end up with extension hooks longer term. =] Differential Revision: https://reviews.llvm.org/D28076 llvm-svn: 290449
2016-12-24 04:38:19 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
; RUN: -passes='require<aa>' -aa-pipeline='default' \
; RUN: | FileCheck %s --check-prefix=CHECK-AA-DEFAULT
; CHECK-AA-DEFAULT: Starting llvm::Module pass manager run
; CHECK-AA-DEFAULT: Running pass: RequireAnalysisPass
; CHECK-AA-DEFAULT: Running analysis: AAManager
; CHECK-AA-DEFAULT: Running analysis: BasicAA
; CHECK-AA-DEFAULT: Running analysis: ScopedNoAliasAA
; CHECK-AA-DEFAULT: Running analysis: TypeBasedAA
; CHECK-AA-DEFAULT: Finished llvm::Module pass manager run
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
[PM] Teach BasicAA how to invalidate its result object. This requires custom handling because BasicAA caches handles to other analyses and so it needs to trigger indirect invalidation. This fixes one of the common crashes when using the new PM in real pipelines. I've also tweaked a regression test to check that we are at least handling the most immediate case. I'm going to work at re-structuring this test some to both scale better (rather than all being in one file) and check more invalidation paths in a follow-up commit, but I wanted to get the basic bug fix in place. llvm-svn: 290603
2016-12-27 18:30:45 +08:00
; RUN: -passes='require<aa>,invalidate<domtree>,aa-eval' -aa-pipeline='basic-aa' \
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
; RUN: | FileCheck %s --check-prefix=CHECK-AA-FUNCTION-INVALIDATE
; CHECK-AA-FUNCTION-INVALIDATE: Starting llvm::Function pass manager run
; CHECK-AA-FUNCTION-INVALIDATE: Running pass: RequireAnalysisPass
; CHECK-AA-FUNCTION-INVALIDATE: Running analysis: AAManager
; CHECK-AA-FUNCTION-INVALIDATE: Running analysis: BasicAA
; CHECK-AA-FUNCTION-INVALIDATE: Running pass: InvalidateAnalysisPass
[PM] Teach BasicAA how to invalidate its result object. This requires custom handling because BasicAA caches handles to other analyses and so it needs to trigger indirect invalidation. This fixes one of the common crashes when using the new PM in real pipelines. I've also tweaked a regression test to check that we are at least handling the most immediate case. I'm going to work at re-structuring this test some to both scale better (rather than all being in one file) and check more invalidation paths in a follow-up commit, but I wanted to get the basic bug fix in place. llvm-svn: 290603
2016-12-27 18:30:45 +08:00
; CHECK-AA-FUNCTION-INVALIDATE: Invalidating analysis: DominatorTreeAnalysis
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
; CHECK-AA-FUNCTION-INVALIDATE: Invalidating analysis: BasicAA
; CHECK-AA-FUNCTION-INVALIDATE: Invalidating analysis: AAManager
; CHECK-AA-FUNCTION-INVALIDATE: Running pass: AAEvaluator
; CHECK-AA-FUNCTION-INVALIDATE: Running analysis: AAManager
; CHECK-AA-FUNCTION-INVALIDATE: Running analysis: BasicAA
; CHECK-AA-FUNCTION-INVALIDATE: Finished llvm::Function pass manager run
; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
; RUN: -passes='require<globals-aa>,function(require<aa>),invalidate<globals-aa>,require<globals-aa>,function(aa-eval)' -aa-pipeline='globals-aa' \
; RUN: | FileCheck %s --check-prefix=CHECK-AA-MODULE-INVALIDATE
; CHECK-AA-MODULE-INVALIDATE: Starting llvm::Module pass manager run
; CHECK-AA-MODULE-INVALIDATE: Running pass: RequireAnalysisPass
; CHECK-AA-MODULE-INVALIDATE: Running analysis: GlobalsAA
; CHECK-AA-MODULE-INVALIDATE: Starting llvm::Function pass manager run
; CHECK-AA-MODULE-INVALIDATE: Running pass: RequireAnalysisPass
; CHECK-AA-MODULE-INVALIDATE: Running analysis: AAManager
; CHECK-AA-MODULE-INVALIDATE: Finished llvm::Function pass manager run
; CHECK-AA-MODULE-INVALIDATE: Running pass: InvalidateAnalysisPass
; CHECK-AA-MODULE-INVALIDATE: Invalidating analysis: GlobalsAA
; CHECK-AA-MODULE-INVALIDATE: Running pass: RequireAnalysisPass
; CHECK-AA-MODULE-INVALIDATE: Running analysis: GlobalsAA
; CHECK-AA-MODULE-INVALIDATE: Starting llvm::Function pass manager run
; CHECK-AA-MODULE-INVALIDATE: Running pass: AAEvaluator
; CHECK-AA-MODULE-INVALIDATE: Finished llvm::Function pass manager run
; CHECK-AA-MODULE-INVALIDATE: Finished llvm::Module pass manager run
[PM] Port memdep to the new pass manager. This is a fairly straightforward port to the new pass manager with one exception. It removes a very questionable use of releaseMemory() in the old pass to invalidate its caches between runs on a function. I don't think this is really guaranteed to be safe. I've just used the more direct port to the new PM to address this by nuking the results object each time the pass runs. While this could cause some minor malloc traffic increase, I don't expect the compile time performance hit to be noticable, and it makes the correctness and other aspects of the pass much easier to reason about. In some cases, it may make things faster by making the sets and maps smaller with better locality. Indeed, the measurements collected by Bruno (thanks!!!) show mostly compile time improvements. There is sadly very limited testing at this point as there are only two tests of memdep, and both rely on GVN. I'll be porting GVN next and that will exercise this heavily though. Differential Revision: http://reviews.llvm.org/D17962 llvm-svn: 263082
2016-03-10 08:55:30 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
; RUN: -passes='require<memdep>' \
; RUN: | FileCheck %s --check-prefix=CHECK-MEMDEP
; CHECK-MEMDEP: Starting llvm::Module pass manager run
; CHECK-MEMDEP: Running pass: RequireAnalysisPass
; CHECK-MEMDEP: Running analysis: MemoryDependenceAnalysis
; CHECK-MEMDEP: Finished llvm::Module pass manager run
[CG] Add a new pass manager printer pass for the old call graph and actually finish wiring up the old call graph. There were bugs in the old call graph that hadn't been caught because it wasn't being tested. It wasn't being tested because it wasn't in the pipeline system and we didn't have a printing pass to run in tests. This fixes all of that. As for why I'm still keeping the old call graph alive its so that I can port GlobalsAA to the new pass manager with out forking it to work with the lazy call graph. That's clearly the right eventual design, but it seems pragmatic to defer that until its necessary. The old call graph works just fine for GlobalsAA. llvm-svn: 263104
2016-03-10 19:24:11 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager %s 2>&1 \
; RUN: -passes='require<callgraph>' \
; RUN: | FileCheck %s --check-prefix=CHECK-CALLGRAPH
; CHECK-CALLGRAPH: Starting llvm::Module pass manager run
; CHECK-CALLGRAPH: Running pass: RequireAnalysisPass
; CHECK-CALLGRAPH: Running analysis: CallGraphAnalysis
; CHECK-CALLGRAPH: Finished llvm::Module pass manager run
[PM] Wire up optimization levels and default pipeline construction APIs in the PassBuilder. These are really just stubs for now, but they give a nice API surface that Clang or other tools can start learning about and enabling for experimentation. I've also wired up parsing various synthetic module pass names to generate these set pipelines. This allows the pipelines to be combined with other passes and have their order controlled, with clear separation between the *kind* of canned pipeline, and the *level* of optimization to be used within that canned pipeline. The most interesting part of this patch is almost certainly the spec for the different optimization levels. I don't think we can ever have hard and fast rules that would make it easy to determine whether a particular optimization makes sense at a particular level -- it will always be in large part a judgement call. But hopefully this will outline the expected rationale that should be used, and the direction that the pipelines should be taken. Much of this was based on a long llvm-dev discussion I started years ago to try and crystalize the intent behind these pipelines, and now, at long long last I'm returning to the task of actually writing it down somewhere that we can cite and try to be consistent with. Differential Revision: http://reviews.llvm.org/D12826 llvm-svn: 262196
2016-02-29 06:16:03 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager \
; RUN: -passes='default<O0>' %s 2>&1 \
[PM] Introduce a reasonable port of the main per-module pass pipeline from the old pass manager in the new one. I'm not trying to support (initially) the numerous options that are currently available to customize the pass pipeline. If we end up really wanting them, we can add them later, but I suspect many are no longer interesting. The simplicity of omitting them will help a lot as we sort out what the pipeline should look like in the new PM. I've also documented to the best of my ability *why* each pass or group of passes is used so that reading the pipeline is more helpful. In many cases I think we have some questionable choices of ordering and I've left FIXME comments in place so we know what to come back and revisit going forward. But for now, I've left it as similar to the current pipeline as I could. Lastly, I've had to comment out several places where passes are not ported to the new pass manager or where the loop pass infrastructure is not yet ready. I did at least fix a few bugs in the loop pass infrastructure uncovered by running the full pipeline, but I didn't want to go too far in this patch -- I'll come back and re-enable these as the infrastructure comes online. But I'd like to keep the comments in place because I don't want to lose track of which passes need to be enabled and where they go. One thing that seemed like a significant API improvement was to require that we don't build pipelines for O0. It seems to have no real benefit. I've also switched back to returning pass managers by value as at this API layer it feels much more natural to me for composition. But if others disagree, I'm happy to go back to an output parameter. I'm not 100% happy with the testing strategy currently, but it seems at least OK. I may come back and try to refactor or otherwise improve this in subsequent patches but I wanted to at least get a good starting point in place. Differential Revision: https://reviews.llvm.org/D28042 llvm-svn: 290325
2016-12-22 14:59:15 +08:00
; RUN: | FileCheck %s --check-prefix=CHECK-O0
; CHECK-O0: Starting llvm::Module pass manager run
; CHECK-O0-NEXT: Finished llvm::Module pass manager run
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; RUN: opt -disable-output -disable-verify -debug-pass-manager \
; RUN: -passes='repeat<3>(no-op-module)' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-REPEAT-MODULE-PASS
; CHECK-REPEAT-MODULE-PASS: Starting llvm::Module pass manager run
[PM] Change the name of the repeating utility to something less overloaded (and simpler). Sean rightly pointed out in code review that we've started using "wrapper pass" as a specific part of the old pass manager, and in fact it is more applicable there. Here, we really have a pass *template* to build a repeated pass, so call it that. llvm-svn: 277689
2016-08-04 11:52:53 +08:00
; CHECK-REPEAT-MODULE-PASS-NEXT: Running pass: RepeatedPass
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-MODULE-PASS-NEXT: Starting llvm::Module pass manager run
; CHECK-REPEAT-MODULE-PASS-NEXT: Running pass: NoOpModulePass
; CHECK-REPEAT-MODULE-PASS-NEXT: Finished llvm::Module pass manager run
; CHECK-REPEAT-MODULE-PASS-NEXT: Starting llvm::Module pass manager run
; CHECK-REPEAT-MODULE-PASS-NEXT: Running pass: NoOpModulePass
; CHECK-REPEAT-MODULE-PASS-NEXT: Finished llvm::Module pass manager run
; CHECK-REPEAT-MODULE-PASS-NEXT: Starting llvm::Module pass manager run
; CHECK-REPEAT-MODULE-PASS-NEXT: Running pass: NoOpModulePass
; CHECK-REPEAT-MODULE-PASS-NEXT: Finished llvm::Module pass manager run
; CHECK-REPEAT-MODULE-PASS-NEXT: Finished llvm::Module pass manager run
; RUN: opt -disable-output -disable-verify -debug-pass-manager \
; RUN: -passes='cgscc(repeat<3>(no-op-cgscc))' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-REPEAT-CGSCC-PASS
; CHECK-REPEAT-CGSCC-PASS: Starting llvm::Module pass manager run
; CHECK-REPEAT-CGSCC-PASS-NEXT: Running pass: ModuleToPostOrderCGSCCPassAdaptor
[PM] Loosen the check ever so slightly -- MSVC appears to not include a space after the comma in template arguments with our hacky type name system. llvm-svn: 290331
2016-12-22 15:53:20 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*(CGSCCAnalysisManager|AnalysisManager<.*LazyCallGraph::SCC.*>).*}},{{.*}}Module>
; CHECK-REPEAT-CGSCC-PASS-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*(FunctionAnalysisManager|AnalysisManager<.*Function.*>).*}},{{.*}}Module>
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Running analysis: LazyCallGraphAnalysis
[PM/LCG] Teach the LazyCallGraph to maintain reference edges from every function to every defined function known to LLVM as a library function. LLVM can introduce calls to these functions either by replacing other library calls or by recognizing patterns (such as memset_pattern or vector math patterns) and replacing those with calls. When these library functions are actually defined in the module, we need to have reference edges to them initially so that we visit them during the CGSCC walk in the right order and can effectively rebuild the call graph afterward. This was discovered when building code with Fortify enabled as that is a common case of both inline definitions of library calls and simplifications of code into calling them. This can in extreme cases of LTO-ing with libc introduce *many* more reference edges. I discussed a bunch of different options with folks but all of them are unsatisfying. They either make the graph operations substantially more complex even when there are *no* defined libfuncs, or they introduce some other complexity into the callgraph. So this patch goes with the simplest possible solution of actual synthetic reference edges. If this proves to be a memory problem, I'm happy to implement one of the clever techniques to save memory here. llvm-svn: 308088
2017-07-15 16:08:19 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Running analysis: TargetLibraryAnalysis
[NewPM] Fix a nasty bug with analysis invalidation in the new PM. The issue here is that we actually allow CGSCC passes to mutate IR (and therefore invalidate analyses) outside of the current SCC. At a minimum, we need to support mutating parent and ancestor SCCs to support the ArgumentPromotion pass which rewrites all calls to a function. However, the analysis invalidation infrastructure is heavily based around not needing to invalidate the same IR-unit at multiple levels. With Loop passes for example, they don't invalidate other Loops. So we need to customize how we handle CGSCC invalidation. Doing this without gratuitously re-running analyses is even harder. I've avoided most of these by using an out-of-band preserved set to accumulate the cross-SCC invalidation, but it still isn't perfect in the case of re-visiting the same SCC repeatedly *but* it coming off the worklist. Unclear how important this use case really is, but I wanted to call it out. Another wrinkle is that in order for this to successfully propagate to function analyses, we have to make sure we have a proxy from the SCC to the Function level. That requires pre-creating the necessary proxy. The motivating test case now works cleanly and is added for ArgumentPromotion. Thanks for the review from Philip and Wei! Differential Revision: https://reviews.llvm.org/D59869 llvm-svn: 357137
2019-03-28 08:51:36 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Running analysis: FunctionAnalysisManagerCGSCCProxy
[New PM] Introducing PassInstrumentation framework Pass Execution Instrumentation interface enables customizable instrumentation of pass execution, as per "RFC: Pass Execution Instrumentation interface" posted 06/07/2018 on llvm-dev@ The intent is to provide a common machinery to implement all the pass-execution-debugging features like print-before/after, opt-bisect, time-passes etc. Here we get a basic implementation consisting of: * PassInstrumentationCallbacks class that handles registration of callbacks and access to them. * PassInstrumentation class that handles instrumentation-point interfaces that call into PassInstrumentationCallbacks. * Callbacks accept StringRef which is just a name of the Pass right now. There were some ideas to pass an opaque wrapper for the pointer to pass instance, however it appears that pointer does not actually identify the instance (adaptors and managers might have the same address with the pass they govern). Hence it was decided to go simple for now and then later decide on what the proper mental model of identifying a "pass in a phase of pipeline" is. * Callbacks accept llvm::Any serving as a wrapper for const IRUnit*, to remove direct dependencies on different IRUnits (e.g. Analyses). * PassInstrumentationAnalysis analysis is explicitly requested from PassManager through usual AnalysisManager::getResult. All pass managers were updated to run that to get PassInstrumentation object for instrumentation calls. * Using tuples/index_sequence getAnalysisResult helper to extract generic AnalysisManager's extra args out of a generic PassManager's extra args. This is the only way I was able to explicitly run getResult for PassInstrumentationAnalysis out of a generic code like PassManager::run or RepeatedPass::run. TODO: Upon lengthy discussions we agreed to accept this as an initial implementation and then get rid of getAnalysisResult by improving RepeatedPass implementation. * PassBuilder takes PassInstrumentationCallbacks object to pass it further into PassInstrumentationAnalysis. Callbacks registration should be performed directly through PassInstrumentationCallbacks. * new-pm tests updated to account for PassInstrumentationAnalysis being run * Added PassInstrumentation tests to PassBuilderCallbacks unit tests. Other unit tests updated with registration of the now-required PassInstrumentationAnalysis. Made getName helper to return std::string (instead of StringRef initially) to fix asan builtbot failures on CGSCC tests. Reviewers: chandlerc, philip.pfaffe Differential Revision: https://reviews.llvm.org/D47858 llvm-svn: 342664
2018-09-21 01:08:45 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Running analysis: PassInstrumentationAnalysis
[NewPM] Fix a nasty bug with analysis invalidation in the new PM. The issue here is that we actually allow CGSCC passes to mutate IR (and therefore invalidate analyses) outside of the current SCC. At a minimum, we need to support mutating parent and ancestor SCCs to support the ArgumentPromotion pass which rewrites all calls to a function. However, the analysis invalidation infrastructure is heavily based around not needing to invalidate the same IR-unit at multiple levels. With Loop passes for example, they don't invalidate other Loops. So we need to customize how we handle CGSCC invalidation. Doing this without gratuitously re-running analyses is even harder. I've avoided most of these by using an out-of-band preserved set to accumulate the cross-SCC invalidation, but it still isn't perfect in the case of re-visiting the same SCC repeatedly *but* it coming off the worklist. Unclear how important this use case really is, but I wanted to call it out. Another wrinkle is that in order for this to successfully propagate to function analyses, we have to make sure we have a proxy from the SCC to the Function level. That requires pre-creating the necessary proxy. The motivating test case now works cleanly and is added for ArgumentPromotion. Thanks for the review from Philip and Wei! Differential Revision: https://reviews.llvm.org/D59869 llvm-svn: 357137
2019-03-28 08:51:36 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Running analysis: OuterAnalysisManagerProxy<{{.*}}LazyCallGraph::SCC{{.*}}>
[PM] Introduce basic update capabilities to the new PM's CGSCC pass manager, including both plumbing and logic to handle function pass updates. There are three fundamentally tied changes here: 1) Plumbing *some* mechanism for updating the CGSCC pass manager as the CG changes while passes are running. 2) Changing the CGSCC pass manager infrastructure to have support for the underlying graph to mutate mid-pass run. 3) Actually updating the CG after function passes run. I can separate them if necessary, but I think its really useful to have them together as the needs of #3 drove #2, and that in turn drove #1. The plumbing technique is to extend the "run" method signature with extra arguments. We provide the call graph that intrinsically is available as it is the basis of the pass manager's IR units, and an output parameter that records the results of updating the call graph during an SCC passes's run. Note that "...UpdateResult" isn't a *great* name here... suggestions very welcome. I tried a pretty frustrating number of different data structures and such for the innards of the update result. Every other one failed for one reason or another. Sometimes I just couldn't keep the layers of complexity right in my head. The thing that really worked was to just directly provide access to the underlying structures used to walk the call graph so that their updates could be informed by the *particular* nature of the change to the graph. The technique for how to make the pass management infrastructure cope with mutating graphs was also something that took a really, really large number of iterations to get to a place where I was happy. Here are some of the considerations that drove the design: - We operate at three levels within the infrastructure: RefSCC, SCC, and Node. In each case, we are working bottom up and so we want to continue to iterate on the "lowest" node as the graph changes. Look at how we iterate over nodes in an SCC running function passes as those function passes mutate the CG. We continue to iterate on the "lowest" SCC, which is the one that continues to contain the function just processed. - The call graph structure re-uses SCCs (and RefSCCs) during mutation events for the *highest* entry in the resulting new subgraph, not the lowest. This means that it is necessary to continually update the current SCC or RefSCC as it shifts. This is really surprising and subtle, and took a long time for me to work out. I actually tried changing the call graph to provide the opposite behavior, and it breaks *EVERYTHING*. The graph update algorithms are really deeply tied to this particualr pattern. - When SCCs or RefSCCs are split apart and refined and we continually re-pin our processing to the bottom one in the subgraph, we need to enqueue the newly formed SCCs and RefSCCs for subsequent processing. Queuing them presents a few challenges: 1) SCCs and RefSCCs use wildly different iteration strategies at a high level. We end up needing to converge them on worklist approaches that can be extended in order to be able to handle the mutations. 2) The order of the enqueuing need to remain bottom-up post-order so that we don't get surprising order of visitation for things like the inliner. 3) We need the worklists to have set semantics so we don't duplicate things endlessly. We don't need a *persistent* set though because we always keep processing the bottom node!!!! This is super, super surprising to me and took a long time to convince myself this is correct, but I'm pretty sure it is... Once we sink down to the bottom node, we can't re-split out the same node in any way, and the postorder of the current queue is fixed and unchanging. 4) We need to make sure that the "current" SCC or RefSCC actually gets enqueued here such that we re-visit it because we continue processing a *new*, *bottom* SCC/RefSCC. - We also need the ability to *skip* SCCs and RefSCCs that get merged into a larger component. We even need the ability to skip *nodes* from an SCC that are no longer part of that SCC. This led to the design you see in the patch which uses SetVector-based worklists. The RefSCC worklist is always empty until an update occurs and is just used to handle those RefSCCs created by updates as the others don't even exist yet and are formed on-demand during the bottom-up walk. The SCC worklist is pre-populated from the RefSCC, and we push new SCCs onto it and blacklist existing SCCs on it to get the desired processing. We then *directly* update these when updating the call graph as I was never able to find a satisfactory abstraction around the update strategy. Finally, we need to compute the updates for function passes. This is mostly used as an initial customer of all the update mechanisms to drive their design to at least cover some real set of use cases. There are a bunch of interesting things that came out of doing this: - It is really nice to do this a function at a time because that function is likely hot in the cache. This means we want even the function pass adaptor to support online updates to the call graph! - To update the call graph after arbitrary function pass mutations is quite hard. We have to build a fairly comprehensive set of data structures and then process them. Fortunately, some of this code is related to the code for building the cal graph in the first place. Unfortunately, very little of it makes any sense to share because the nature of what we're doing is so very different. I've factored out the one part that made sense at least. - We need to transfer these updates into the various structures for the CGSCC pass manager. Once those were more sanely worked out, this became relatively easier. But some of those needs necessitated changes to the LazyCallGraph interface to make it significantly easier to extract the changed SCCs from an update operation. - We also need to update the CGSCC analysis manager as the shape of the graph changes. When an SCC is merged away we need to clear analyses associated with it from the analysis manager which we didn't have support for in the analysis manager infrsatructure. New SCCs are easy! But then we have the case that the original SCC has its shape changed but remains in the call graph. There we need to *invalidate* the analyses associated with it. - We also need to invalidate analyses after we *finish* processing an SCC. But the analyses we need to invalidate here are *only those for the newly updated SCC*!!! Because we only continue processing the bottom SCC, if we split SCCs apart the original one gets invalidated once when its shape changes and is not processed farther so its analyses will be correct. It is the bottom SCC which continues being processed and needs to have the "normal" invalidation done based on the preserved analyses set. All of this is mostly background and context for the changes here. Many thanks to all the reviewers who helped here. Especially Sanjoy who caught several interesting bugs in the graph algorithms, David, Sean, and others who all helped with feedback. Differential Revision: http://reviews.llvm.org/D21464 llvm-svn: 279618
2016-08-24 17:37:14 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Starting CGSCC pass manager run
[PM] Change the name of the repeating utility to something less overloaded (and simpler). Sean rightly pointed out in code review that we've started using "wrapper pass" as a specific part of the old pass manager, and in fact it is more applicable there. Here, we really have a pass *template* to build a repeated pass, so call it that. llvm-svn: 277689
2016-08-04 11:52:53 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Running pass: RepeatedPass
[PM] Introduce basic update capabilities to the new PM's CGSCC pass manager, including both plumbing and logic to handle function pass updates. There are three fundamentally tied changes here: 1) Plumbing *some* mechanism for updating the CGSCC pass manager as the CG changes while passes are running. 2) Changing the CGSCC pass manager infrastructure to have support for the underlying graph to mutate mid-pass run. 3) Actually updating the CG after function passes run. I can separate them if necessary, but I think its really useful to have them together as the needs of #3 drove #2, and that in turn drove #1. The plumbing technique is to extend the "run" method signature with extra arguments. We provide the call graph that intrinsically is available as it is the basis of the pass manager's IR units, and an output parameter that records the results of updating the call graph during an SCC passes's run. Note that "...UpdateResult" isn't a *great* name here... suggestions very welcome. I tried a pretty frustrating number of different data structures and such for the innards of the update result. Every other one failed for one reason or another. Sometimes I just couldn't keep the layers of complexity right in my head. The thing that really worked was to just directly provide access to the underlying structures used to walk the call graph so that their updates could be informed by the *particular* nature of the change to the graph. The technique for how to make the pass management infrastructure cope with mutating graphs was also something that took a really, really large number of iterations to get to a place where I was happy. Here are some of the considerations that drove the design: - We operate at three levels within the infrastructure: RefSCC, SCC, and Node. In each case, we are working bottom up and so we want to continue to iterate on the "lowest" node as the graph changes. Look at how we iterate over nodes in an SCC running function passes as those function passes mutate the CG. We continue to iterate on the "lowest" SCC, which is the one that continues to contain the function just processed. - The call graph structure re-uses SCCs (and RefSCCs) during mutation events for the *highest* entry in the resulting new subgraph, not the lowest. This means that it is necessary to continually update the current SCC or RefSCC as it shifts. This is really surprising and subtle, and took a long time for me to work out. I actually tried changing the call graph to provide the opposite behavior, and it breaks *EVERYTHING*. The graph update algorithms are really deeply tied to this particualr pattern. - When SCCs or RefSCCs are split apart and refined and we continually re-pin our processing to the bottom one in the subgraph, we need to enqueue the newly formed SCCs and RefSCCs for subsequent processing. Queuing them presents a few challenges: 1) SCCs and RefSCCs use wildly different iteration strategies at a high level. We end up needing to converge them on worklist approaches that can be extended in order to be able to handle the mutations. 2) The order of the enqueuing need to remain bottom-up post-order so that we don't get surprising order of visitation for things like the inliner. 3) We need the worklists to have set semantics so we don't duplicate things endlessly. We don't need a *persistent* set though because we always keep processing the bottom node!!!! This is super, super surprising to me and took a long time to convince myself this is correct, but I'm pretty sure it is... Once we sink down to the bottom node, we can't re-split out the same node in any way, and the postorder of the current queue is fixed and unchanging. 4) We need to make sure that the "current" SCC or RefSCC actually gets enqueued here such that we re-visit it because we continue processing a *new*, *bottom* SCC/RefSCC. - We also need the ability to *skip* SCCs and RefSCCs that get merged into a larger component. We even need the ability to skip *nodes* from an SCC that are no longer part of that SCC. This led to the design you see in the patch which uses SetVector-based worklists. The RefSCC worklist is always empty until an update occurs and is just used to handle those RefSCCs created by updates as the others don't even exist yet and are formed on-demand during the bottom-up walk. The SCC worklist is pre-populated from the RefSCC, and we push new SCCs onto it and blacklist existing SCCs on it to get the desired processing. We then *directly* update these when updating the call graph as I was never able to find a satisfactory abstraction around the update strategy. Finally, we need to compute the updates for function passes. This is mostly used as an initial customer of all the update mechanisms to drive their design to at least cover some real set of use cases. There are a bunch of interesting things that came out of doing this: - It is really nice to do this a function at a time because that function is likely hot in the cache. This means we want even the function pass adaptor to support online updates to the call graph! - To update the call graph after arbitrary function pass mutations is quite hard. We have to build a fairly comprehensive set of data structures and then process them. Fortunately, some of this code is related to the code for building the cal graph in the first place. Unfortunately, very little of it makes any sense to share because the nature of what we're doing is so very different. I've factored out the one part that made sense at least. - We need to transfer these updates into the various structures for the CGSCC pass manager. Once those were more sanely worked out, this became relatively easier. But some of those needs necessitated changes to the LazyCallGraph interface to make it significantly easier to extract the changed SCCs from an update operation. - We also need to update the CGSCC analysis manager as the shape of the graph changes. When an SCC is merged away we need to clear analyses associated with it from the analysis manager which we didn't have support for in the analysis manager infrsatructure. New SCCs are easy! But then we have the case that the original SCC has its shape changed but remains in the call graph. There we need to *invalidate* the analyses associated with it. - We also need to invalidate analyses after we *finish* processing an SCC. But the analyses we need to invalidate here are *only those for the newly updated SCC*!!! Because we only continue processing the bottom SCC, if we split SCCs apart the original one gets invalidated once when its shape changes and is not processed farther so its analyses will be correct. It is the bottom SCC which continues being processed and needs to have the "normal" invalidation done based on the preserved analyses set. All of this is mostly background and context for the changes here. Many thanks to all the reviewers who helped here. Especially Sanjoy who caught several interesting bugs in the graph algorithms, David, Sean, and others who all helped with feedback. Differential Revision: http://reviews.llvm.org/D21464 llvm-svn: 279618
2016-08-24 17:37:14 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Starting CGSCC pass manager run
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Running pass: NoOpCGSCCPass
[PM] Introduce basic update capabilities to the new PM's CGSCC pass manager, including both plumbing and logic to handle function pass updates. There are three fundamentally tied changes here: 1) Plumbing *some* mechanism for updating the CGSCC pass manager as the CG changes while passes are running. 2) Changing the CGSCC pass manager infrastructure to have support for the underlying graph to mutate mid-pass run. 3) Actually updating the CG after function passes run. I can separate them if necessary, but I think its really useful to have them together as the needs of #3 drove #2, and that in turn drove #1. The plumbing technique is to extend the "run" method signature with extra arguments. We provide the call graph that intrinsically is available as it is the basis of the pass manager's IR units, and an output parameter that records the results of updating the call graph during an SCC passes's run. Note that "...UpdateResult" isn't a *great* name here... suggestions very welcome. I tried a pretty frustrating number of different data structures and such for the innards of the update result. Every other one failed for one reason or another. Sometimes I just couldn't keep the layers of complexity right in my head. The thing that really worked was to just directly provide access to the underlying structures used to walk the call graph so that their updates could be informed by the *particular* nature of the change to the graph. The technique for how to make the pass management infrastructure cope with mutating graphs was also something that took a really, really large number of iterations to get to a place where I was happy. Here are some of the considerations that drove the design: - We operate at three levels within the infrastructure: RefSCC, SCC, and Node. In each case, we are working bottom up and so we want to continue to iterate on the "lowest" node as the graph changes. Look at how we iterate over nodes in an SCC running function passes as those function passes mutate the CG. We continue to iterate on the "lowest" SCC, which is the one that continues to contain the function just processed. - The call graph structure re-uses SCCs (and RefSCCs) during mutation events for the *highest* entry in the resulting new subgraph, not the lowest. This means that it is necessary to continually update the current SCC or RefSCC as it shifts. This is really surprising and subtle, and took a long time for me to work out. I actually tried changing the call graph to provide the opposite behavior, and it breaks *EVERYTHING*. The graph update algorithms are really deeply tied to this particualr pattern. - When SCCs or RefSCCs are split apart and refined and we continually re-pin our processing to the bottom one in the subgraph, we need to enqueue the newly formed SCCs and RefSCCs for subsequent processing. Queuing them presents a few challenges: 1) SCCs and RefSCCs use wildly different iteration strategies at a high level. We end up needing to converge them on worklist approaches that can be extended in order to be able to handle the mutations. 2) The order of the enqueuing need to remain bottom-up post-order so that we don't get surprising order of visitation for things like the inliner. 3) We need the worklists to have set semantics so we don't duplicate things endlessly. We don't need a *persistent* set though because we always keep processing the bottom node!!!! This is super, super surprising to me and took a long time to convince myself this is correct, but I'm pretty sure it is... Once we sink down to the bottom node, we can't re-split out the same node in any way, and the postorder of the current queue is fixed and unchanging. 4) We need to make sure that the "current" SCC or RefSCC actually gets enqueued here such that we re-visit it because we continue processing a *new*, *bottom* SCC/RefSCC. - We also need the ability to *skip* SCCs and RefSCCs that get merged into a larger component. We even need the ability to skip *nodes* from an SCC that are no longer part of that SCC. This led to the design you see in the patch which uses SetVector-based worklists. The RefSCC worklist is always empty until an update occurs and is just used to handle those RefSCCs created by updates as the others don't even exist yet and are formed on-demand during the bottom-up walk. The SCC worklist is pre-populated from the RefSCC, and we push new SCCs onto it and blacklist existing SCCs on it to get the desired processing. We then *directly* update these when updating the call graph as I was never able to find a satisfactory abstraction around the update strategy. Finally, we need to compute the updates for function passes. This is mostly used as an initial customer of all the update mechanisms to drive their design to at least cover some real set of use cases. There are a bunch of interesting things that came out of doing this: - It is really nice to do this a function at a time because that function is likely hot in the cache. This means we want even the function pass adaptor to support online updates to the call graph! - To update the call graph after arbitrary function pass mutations is quite hard. We have to build a fairly comprehensive set of data structures and then process them. Fortunately, some of this code is related to the code for building the cal graph in the first place. Unfortunately, very little of it makes any sense to share because the nature of what we're doing is so very different. I've factored out the one part that made sense at least. - We need to transfer these updates into the various structures for the CGSCC pass manager. Once those were more sanely worked out, this became relatively easier. But some of those needs necessitated changes to the LazyCallGraph interface to make it significantly easier to extract the changed SCCs from an update operation. - We also need to update the CGSCC analysis manager as the shape of the graph changes. When an SCC is merged away we need to clear analyses associated with it from the analysis manager which we didn't have support for in the analysis manager infrsatructure. New SCCs are easy! But then we have the case that the original SCC has its shape changed but remains in the call graph. There we need to *invalidate* the analyses associated with it. - We also need to invalidate analyses after we *finish* processing an SCC. But the analyses we need to invalidate here are *only those for the newly updated SCC*!!! Because we only continue processing the bottom SCC, if we split SCCs apart the original one gets invalidated once when its shape changes and is not processed farther so its analyses will be correct. It is the bottom SCC which continues being processed and needs to have the "normal" invalidation done based on the preserved analyses set. All of this is mostly background and context for the changes here. Many thanks to all the reviewers who helped here. Especially Sanjoy who caught several interesting bugs in the graph algorithms, David, Sean, and others who all helped with feedback. Differential Revision: http://reviews.llvm.org/D21464 llvm-svn: 279618
2016-08-24 17:37:14 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Finished CGSCC pass manager run
; CHECK-REPEAT-CGSCC-PASS-NEXT: Starting CGSCC pass manager run
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Running pass: NoOpCGSCCPass
[PM] Introduce basic update capabilities to the new PM's CGSCC pass manager, including both plumbing and logic to handle function pass updates. There are three fundamentally tied changes here: 1) Plumbing *some* mechanism for updating the CGSCC pass manager as the CG changes while passes are running. 2) Changing the CGSCC pass manager infrastructure to have support for the underlying graph to mutate mid-pass run. 3) Actually updating the CG after function passes run. I can separate them if necessary, but I think its really useful to have them together as the needs of #3 drove #2, and that in turn drove #1. The plumbing technique is to extend the "run" method signature with extra arguments. We provide the call graph that intrinsically is available as it is the basis of the pass manager's IR units, and an output parameter that records the results of updating the call graph during an SCC passes's run. Note that "...UpdateResult" isn't a *great* name here... suggestions very welcome. I tried a pretty frustrating number of different data structures and such for the innards of the update result. Every other one failed for one reason or another. Sometimes I just couldn't keep the layers of complexity right in my head. The thing that really worked was to just directly provide access to the underlying structures used to walk the call graph so that their updates could be informed by the *particular* nature of the change to the graph. The technique for how to make the pass management infrastructure cope with mutating graphs was also something that took a really, really large number of iterations to get to a place where I was happy. Here are some of the considerations that drove the design: - We operate at three levels within the infrastructure: RefSCC, SCC, and Node. In each case, we are working bottom up and so we want to continue to iterate on the "lowest" node as the graph changes. Look at how we iterate over nodes in an SCC running function passes as those function passes mutate the CG. We continue to iterate on the "lowest" SCC, which is the one that continues to contain the function just processed. - The call graph structure re-uses SCCs (and RefSCCs) during mutation events for the *highest* entry in the resulting new subgraph, not the lowest. This means that it is necessary to continually update the current SCC or RefSCC as it shifts. This is really surprising and subtle, and took a long time for me to work out. I actually tried changing the call graph to provide the opposite behavior, and it breaks *EVERYTHING*. The graph update algorithms are really deeply tied to this particualr pattern. - When SCCs or RefSCCs are split apart and refined and we continually re-pin our processing to the bottom one in the subgraph, we need to enqueue the newly formed SCCs and RefSCCs for subsequent processing. Queuing them presents a few challenges: 1) SCCs and RefSCCs use wildly different iteration strategies at a high level. We end up needing to converge them on worklist approaches that can be extended in order to be able to handle the mutations. 2) The order of the enqueuing need to remain bottom-up post-order so that we don't get surprising order of visitation for things like the inliner. 3) We need the worklists to have set semantics so we don't duplicate things endlessly. We don't need a *persistent* set though because we always keep processing the bottom node!!!! This is super, super surprising to me and took a long time to convince myself this is correct, but I'm pretty sure it is... Once we sink down to the bottom node, we can't re-split out the same node in any way, and the postorder of the current queue is fixed and unchanging. 4) We need to make sure that the "current" SCC or RefSCC actually gets enqueued here such that we re-visit it because we continue processing a *new*, *bottom* SCC/RefSCC. - We also need the ability to *skip* SCCs and RefSCCs that get merged into a larger component. We even need the ability to skip *nodes* from an SCC that are no longer part of that SCC. This led to the design you see in the patch which uses SetVector-based worklists. The RefSCC worklist is always empty until an update occurs and is just used to handle those RefSCCs created by updates as the others don't even exist yet and are formed on-demand during the bottom-up walk. The SCC worklist is pre-populated from the RefSCC, and we push new SCCs onto it and blacklist existing SCCs on it to get the desired processing. We then *directly* update these when updating the call graph as I was never able to find a satisfactory abstraction around the update strategy. Finally, we need to compute the updates for function passes. This is mostly used as an initial customer of all the update mechanisms to drive their design to at least cover some real set of use cases. There are a bunch of interesting things that came out of doing this: - It is really nice to do this a function at a time because that function is likely hot in the cache. This means we want even the function pass adaptor to support online updates to the call graph! - To update the call graph after arbitrary function pass mutations is quite hard. We have to build a fairly comprehensive set of data structures and then process them. Fortunately, some of this code is related to the code for building the cal graph in the first place. Unfortunately, very little of it makes any sense to share because the nature of what we're doing is so very different. I've factored out the one part that made sense at least. - We need to transfer these updates into the various structures for the CGSCC pass manager. Once those were more sanely worked out, this became relatively easier. But some of those needs necessitated changes to the LazyCallGraph interface to make it significantly easier to extract the changed SCCs from an update operation. - We also need to update the CGSCC analysis manager as the shape of the graph changes. When an SCC is merged away we need to clear analyses associated with it from the analysis manager which we didn't have support for in the analysis manager infrsatructure. New SCCs are easy! But then we have the case that the original SCC has its shape changed but remains in the call graph. There we need to *invalidate* the analyses associated with it. - We also need to invalidate analyses after we *finish* processing an SCC. But the analyses we need to invalidate here are *only those for the newly updated SCC*!!! Because we only continue processing the bottom SCC, if we split SCCs apart the original one gets invalidated once when its shape changes and is not processed farther so its analyses will be correct. It is the bottom SCC which continues being processed and needs to have the "normal" invalidation done based on the preserved analyses set. All of this is mostly background and context for the changes here. Many thanks to all the reviewers who helped here. Especially Sanjoy who caught several interesting bugs in the graph algorithms, David, Sean, and others who all helped with feedback. Differential Revision: http://reviews.llvm.org/D21464 llvm-svn: 279618
2016-08-24 17:37:14 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Finished CGSCC pass manager run
; CHECK-REPEAT-CGSCC-PASS-NEXT: Starting CGSCC pass manager run
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Running pass: NoOpCGSCCPass
[PM] Introduce basic update capabilities to the new PM's CGSCC pass manager, including both plumbing and logic to handle function pass updates. There are three fundamentally tied changes here: 1) Plumbing *some* mechanism for updating the CGSCC pass manager as the CG changes while passes are running. 2) Changing the CGSCC pass manager infrastructure to have support for the underlying graph to mutate mid-pass run. 3) Actually updating the CG after function passes run. I can separate them if necessary, but I think its really useful to have them together as the needs of #3 drove #2, and that in turn drove #1. The plumbing technique is to extend the "run" method signature with extra arguments. We provide the call graph that intrinsically is available as it is the basis of the pass manager's IR units, and an output parameter that records the results of updating the call graph during an SCC passes's run. Note that "...UpdateResult" isn't a *great* name here... suggestions very welcome. I tried a pretty frustrating number of different data structures and such for the innards of the update result. Every other one failed for one reason or another. Sometimes I just couldn't keep the layers of complexity right in my head. The thing that really worked was to just directly provide access to the underlying structures used to walk the call graph so that their updates could be informed by the *particular* nature of the change to the graph. The technique for how to make the pass management infrastructure cope with mutating graphs was also something that took a really, really large number of iterations to get to a place where I was happy. Here are some of the considerations that drove the design: - We operate at three levels within the infrastructure: RefSCC, SCC, and Node. In each case, we are working bottom up and so we want to continue to iterate on the "lowest" node as the graph changes. Look at how we iterate over nodes in an SCC running function passes as those function passes mutate the CG. We continue to iterate on the "lowest" SCC, which is the one that continues to contain the function just processed. - The call graph structure re-uses SCCs (and RefSCCs) during mutation events for the *highest* entry in the resulting new subgraph, not the lowest. This means that it is necessary to continually update the current SCC or RefSCC as it shifts. This is really surprising and subtle, and took a long time for me to work out. I actually tried changing the call graph to provide the opposite behavior, and it breaks *EVERYTHING*. The graph update algorithms are really deeply tied to this particualr pattern. - When SCCs or RefSCCs are split apart and refined and we continually re-pin our processing to the bottom one in the subgraph, we need to enqueue the newly formed SCCs and RefSCCs for subsequent processing. Queuing them presents a few challenges: 1) SCCs and RefSCCs use wildly different iteration strategies at a high level. We end up needing to converge them on worklist approaches that can be extended in order to be able to handle the mutations. 2) The order of the enqueuing need to remain bottom-up post-order so that we don't get surprising order of visitation for things like the inliner. 3) We need the worklists to have set semantics so we don't duplicate things endlessly. We don't need a *persistent* set though because we always keep processing the bottom node!!!! This is super, super surprising to me and took a long time to convince myself this is correct, but I'm pretty sure it is... Once we sink down to the bottom node, we can't re-split out the same node in any way, and the postorder of the current queue is fixed and unchanging. 4) We need to make sure that the "current" SCC or RefSCC actually gets enqueued here such that we re-visit it because we continue processing a *new*, *bottom* SCC/RefSCC. - We also need the ability to *skip* SCCs and RefSCCs that get merged into a larger component. We even need the ability to skip *nodes* from an SCC that are no longer part of that SCC. This led to the design you see in the patch which uses SetVector-based worklists. The RefSCC worklist is always empty until an update occurs and is just used to handle those RefSCCs created by updates as the others don't even exist yet and are formed on-demand during the bottom-up walk. The SCC worklist is pre-populated from the RefSCC, and we push new SCCs onto it and blacklist existing SCCs on it to get the desired processing. We then *directly* update these when updating the call graph as I was never able to find a satisfactory abstraction around the update strategy. Finally, we need to compute the updates for function passes. This is mostly used as an initial customer of all the update mechanisms to drive their design to at least cover some real set of use cases. There are a bunch of interesting things that came out of doing this: - It is really nice to do this a function at a time because that function is likely hot in the cache. This means we want even the function pass adaptor to support online updates to the call graph! - To update the call graph after arbitrary function pass mutations is quite hard. We have to build a fairly comprehensive set of data structures and then process them. Fortunately, some of this code is related to the code for building the cal graph in the first place. Unfortunately, very little of it makes any sense to share because the nature of what we're doing is so very different. I've factored out the one part that made sense at least. - We need to transfer these updates into the various structures for the CGSCC pass manager. Once those were more sanely worked out, this became relatively easier. But some of those needs necessitated changes to the LazyCallGraph interface to make it significantly easier to extract the changed SCCs from an update operation. - We also need to update the CGSCC analysis manager as the shape of the graph changes. When an SCC is merged away we need to clear analyses associated with it from the analysis manager which we didn't have support for in the analysis manager infrsatructure. New SCCs are easy! But then we have the case that the original SCC has its shape changed but remains in the call graph. There we need to *invalidate* the analyses associated with it. - We also need to invalidate analyses after we *finish* processing an SCC. But the analyses we need to invalidate here are *only those for the newly updated SCC*!!! Because we only continue processing the bottom SCC, if we split SCCs apart the original one gets invalidated once when its shape changes and is not processed farther so its analyses will be correct. It is the bottom SCC which continues being processed and needs to have the "normal" invalidation done based on the preserved analyses set. All of this is mostly background and context for the changes here. Many thanks to all the reviewers who helped here. Especially Sanjoy who caught several interesting bugs in the graph algorithms, David, Sean, and others who all helped with feedback. Differential Revision: http://reviews.llvm.org/D21464 llvm-svn: 279618
2016-08-24 17:37:14 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Finished CGSCC pass manager run
; CHECK-REPEAT-CGSCC-PASS-NEXT: Finished CGSCC pass manager run
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-CGSCC-PASS-NEXT: Finished llvm::Module pass manager run
; RUN: opt -disable-output -disable-verify -debug-pass-manager \
; RUN: -passes='function(repeat<3>(no-op-function))' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-REPEAT-FUNCTION-PASS
; CHECK-REPEAT-FUNCTION-PASS: Starting llvm::Module pass manager run
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Running pass: ModuleToFunctionPassAdaptor
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*}}>
[New PM] Introducing PassInstrumentation framework Pass Execution Instrumentation interface enables customizable instrumentation of pass execution, as per "RFC: Pass Execution Instrumentation interface" posted 06/07/2018 on llvm-dev@ The intent is to provide a common machinery to implement all the pass-execution-debugging features like print-before/after, opt-bisect, time-passes etc. Here we get a basic implementation consisting of: * PassInstrumentationCallbacks class that handles registration of callbacks and access to them. * PassInstrumentation class that handles instrumentation-point interfaces that call into PassInstrumentationCallbacks. * Callbacks accept StringRef which is just a name of the Pass right now. There were some ideas to pass an opaque wrapper for the pointer to pass instance, however it appears that pointer does not actually identify the instance (adaptors and managers might have the same address with the pass they govern). Hence it was decided to go simple for now and then later decide on what the proper mental model of identifying a "pass in a phase of pipeline" is. * Callbacks accept llvm::Any serving as a wrapper for const IRUnit*, to remove direct dependencies on different IRUnits (e.g. Analyses). * PassInstrumentationAnalysis analysis is explicitly requested from PassManager through usual AnalysisManager::getResult. All pass managers were updated to run that to get PassInstrumentation object for instrumentation calls. * Using tuples/index_sequence getAnalysisResult helper to extract generic AnalysisManager's extra args out of a generic PassManager's extra args. This is the only way I was able to explicitly run getResult for PassInstrumentationAnalysis out of a generic code like PassManager::run or RepeatedPass::run. TODO: Upon lengthy discussions we agreed to accept this as an initial implementation and then get rid of getAnalysisResult by improving RepeatedPass implementation. * PassBuilder takes PassInstrumentationCallbacks object to pass it further into PassInstrumentationAnalysis. Callbacks registration should be performed directly through PassInstrumentationCallbacks. * new-pm tests updated to account for PassInstrumentationAnalysis being run * Added PassInstrumentation tests to PassBuilderCallbacks unit tests. Other unit tests updated with registration of the now-required PassInstrumentationAnalysis. Made getName helper to return std::string (instead of StringRef initially) to fix asan builtbot failures on CGSCC tests. Reviewers: chandlerc, philip.pfaffe Differential Revision: https://reviews.llvm.org/D47858 llvm-svn: 342664
2018-09-21 01:08:45 +08:00
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Running analysis: PassInstrumentationAnalysis
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Starting llvm::Function pass manager run
[PM] Change the name of the repeating utility to something less overloaded (and simpler). Sean rightly pointed out in code review that we've started using "wrapper pass" as a specific part of the old pass manager, and in fact it is more applicable there. Here, we really have a pass *template* to build a repeated pass, so call it that. llvm-svn: 277689
2016-08-04 11:52:53 +08:00
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Running pass: RepeatedPass
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Starting llvm::Function pass manager run
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Running pass: NoOpFunctionPass
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Finished llvm::Function pass manager run
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Starting llvm::Function pass manager run
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Running pass: NoOpFunctionPass
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Finished llvm::Function pass manager run
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Starting llvm::Function pass manager run
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Running pass: NoOpFunctionPass
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Finished llvm::Function pass manager run
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Finished llvm::Function pass manager run
; CHECK-REPEAT-FUNCTION-PASS-NEXT: Finished llvm::Module pass manager run
; RUN: opt -disable-output -disable-verify -debug-pass-manager \
; RUN: -passes='loop(repeat<3>(no-op-loop))' %s 2>&1 \
; RUN: | FileCheck %s --check-prefix=CHECK-REPEAT-LOOP-PASS
; CHECK-REPEAT-LOOP-PASS: Starting llvm::Module pass manager run
; CHECK-REPEAT-LOOP-PASS-NEXT: Running pass: ModuleToFunctionPassAdaptor
; CHECK-REPEAT-LOOP-PASS-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*}}>
[New PM] Introducing PassInstrumentation framework Pass Execution Instrumentation interface enables customizable instrumentation of pass execution, as per "RFC: Pass Execution Instrumentation interface" posted 06/07/2018 on llvm-dev@ The intent is to provide a common machinery to implement all the pass-execution-debugging features like print-before/after, opt-bisect, time-passes etc. Here we get a basic implementation consisting of: * PassInstrumentationCallbacks class that handles registration of callbacks and access to them. * PassInstrumentation class that handles instrumentation-point interfaces that call into PassInstrumentationCallbacks. * Callbacks accept StringRef which is just a name of the Pass right now. There were some ideas to pass an opaque wrapper for the pointer to pass instance, however it appears that pointer does not actually identify the instance (adaptors and managers might have the same address with the pass they govern). Hence it was decided to go simple for now and then later decide on what the proper mental model of identifying a "pass in a phase of pipeline" is. * Callbacks accept llvm::Any serving as a wrapper for const IRUnit*, to remove direct dependencies on different IRUnits (e.g. Analyses). * PassInstrumentationAnalysis analysis is explicitly requested from PassManager through usual AnalysisManager::getResult. All pass managers were updated to run that to get PassInstrumentation object for instrumentation calls. * Using tuples/index_sequence getAnalysisResult helper to extract generic AnalysisManager's extra args out of a generic PassManager's extra args. This is the only way I was able to explicitly run getResult for PassInstrumentationAnalysis out of a generic code like PassManager::run or RepeatedPass::run. TODO: Upon lengthy discussions we agreed to accept this as an initial implementation and then get rid of getAnalysisResult by improving RepeatedPass implementation. * PassBuilder takes PassInstrumentationCallbacks object to pass it further into PassInstrumentationAnalysis. Callbacks registration should be performed directly through PassInstrumentationCallbacks. * new-pm tests updated to account for PassInstrumentationAnalysis being run * Added PassInstrumentation tests to PassBuilderCallbacks unit tests. Other unit tests updated with registration of the now-required PassInstrumentationAnalysis. Made getName helper to return std::string (instead of StringRef initially) to fix asan builtbot failures on CGSCC tests. Reviewers: chandlerc, philip.pfaffe Differential Revision: https://reviews.llvm.org/D47858 llvm-svn: 342664
2018-09-21 01:08:45 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Running analysis: PassInstrumentationAnalysis
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Starting llvm::Function pass manager run
; CHECK-REPEAT-LOOP-PASS-NEXT: Running pass: FunctionToLoopPassAdaptor
[PM] pass -debug-pass-manager flag into FunctionToLoopPassAdaptor's canonicalization PM Summary: New pass manager driver passes DebugPM (-debug-pass-manager) flag into individual PassManager constructors in order to enable debug logging. FunctionToLoopPassAdaptor has its own internal LoopCanonicalizationPM which never gets its debug logging enabled and that means canonicalization passes like LoopSimplify are never present in -debug-pass-manager output. Extending FunctionToLoopPassAdaptor's constructor and createFunctionToLoopPassAdaptor wrapper with an optional boolean DebugLogging argument. Passing debug-logging flags there as appropriate. Reviewers: chandlerc, davide Reviewed By: davide Subscribers: mehdi_amini, eraman, llvm-commits, JDevlieghere Differential Revision: https://reviews.llvm.org/D41586 llvm-svn: 321548
2017-12-29 16:16:06 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Starting llvm::Function pass manager run
; CHECK-REPEAT-LOOP-PASS-NEXT: Running pass: LoopSimplify
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Running analysis: LoopAnalysis
; CHECK-REPEAT-LOOP-PASS-NEXT: Running analysis: DominatorTreeAnalysis
[PM] Teach the loop PM to run LoopSimplify prior to the loop pipeline. This adds the last remaining core feature of the loop pass pipeline in the new PM and removes the last of the really egregious hacks in the LICM tests. Sadly, this requires really substantial changes in the unittests in order to provide and maintain simplified loops. This is particularly hard because for example LoopSimplify will try to fold undef branches to an ideal direction and simplify the loop accordingly. Differential Revision: https://reviews.llvm.org/D28766 llvm-svn: 292709
2017-01-21 11:48:51 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Running analysis: AssumptionAnalysis
; CHECK-REPEAT-LOOP-PASS-NEXT: Invalidating all non-preserved analyses
[PM] pass -debug-pass-manager flag into FunctionToLoopPassAdaptor's canonicalization PM Summary: New pass manager driver passes DebugPM (-debug-pass-manager) flag into individual PassManager constructors in order to enable debug logging. FunctionToLoopPassAdaptor has its own internal LoopCanonicalizationPM which never gets its debug logging enabled and that means canonicalization passes like LoopSimplify are never present in -debug-pass-manager output. Extending FunctionToLoopPassAdaptor's constructor and createFunctionToLoopPassAdaptor wrapper with an optional boolean DebugLogging argument. Passing debug-logging flags there as appropriate. Reviewers: chandlerc, davide Reviewed By: davide Subscribers: mehdi_amini, eraman, llvm-commits, JDevlieghere Differential Revision: https://reviews.llvm.org/D41586 llvm-svn: 321548
2017-12-29 16:16:06 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Running pass: LCSSAPass
; CHECK-REPEAT-LOOP-PASS-NEXT: Finished llvm::Function pass manager run
[PM] Introduce a reasonable port of the main per-module pass pipeline from the old pass manager in the new one. I'm not trying to support (initially) the numerous options that are currently available to customize the pass pipeline. If we end up really wanting them, we can add them later, but I suspect many are no longer interesting. The simplicity of omitting them will help a lot as we sort out what the pipeline should look like in the new PM. I've also documented to the best of my ability *why* each pass or group of passes is used so that reading the pipeline is more helpful. In many cases I think we have some questionable choices of ordering and I've left FIXME comments in place so we know what to come back and revisit going forward. But for now, I've left it as similar to the current pipeline as I could. Lastly, I've had to comment out several places where passes are not ported to the new pass manager or where the loop pass infrastructure is not yet ready. I did at least fix a few bugs in the loop pass infrastructure uncovered by running the full pipeline, but I didn't want to go too far in this patch -- I'll come back and re-enable these as the infrastructure comes online. But I'd like to keep the comments in place because I don't want to lose track of which passes need to be enabled and where they go. One thing that seemed like a significant API improvement was to require that we don't build pipelines for O0. It seems to have no real benefit. I've also switched back to returning pass managers by value as at this API layer it feels much more natural to me for composition. But if others disagree, I'm happy to go back to an output parameter. I'm not 100% happy with the testing strategy currently, but it seems at least OK. I may come back and try to refactor or otherwise improve this in subsequent patches but I wanted to at least get a good starting point in place. Differential Revision: https://reviews.llvm.org/D28042 llvm-svn: 290325
2016-12-22 14:59:15 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Running analysis: AAManager
; CHECK-REPEAT-LOOP-PASS-NEXT: Running analysis: TargetLibraryAnalysis
[PM] Rewrite the loop pass manager to use a worklist and augmented run arguments much like the CGSCC pass manager. This is a major redesign following the pattern establish for the CGSCC layer to support updates to the set of loops during the traversal of the loop nest and to support invalidation of analyses. An additional significant burden in the loop PM is that so many passes require access to a large number of function analyses. Manually ensuring these are cached, available, and preserved has been a long-standing burden in LLVM even with the help of the automatic scheduling in the old pass manager. And it made the new pass manager extremely unweildy. With this design, we can package the common analyses up while in a function pass and make them immediately available to all the loop passes. While in some cases this is unnecessary, I think the simplicity afforded is worth it. This does not (yet) address loop simplified form or LCSSA form, but those are the next things on my radar and I have a clear plan for them. While the patch is very large, most of it is either mechanically updating loop passes to the new API or the new testing for the loop PM. The code for it is reasonably compact. I have not yet updated all of the loop passes to correctly leverage the update mechanisms demonstrated in the unittests. I'll do that in follow-up patches along with improved FileCheck tests for those passes that ensure things work in more realistic scenarios. In many cases, there isn't much we can do with these until the loop simplified form and LCSSA form are in place. Differential Revision: https://reviews.llvm.org/D28292 llvm-svn: 291651
2017-01-11 14:23:21 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Running analysis: ScalarEvolutionAnalysis
; CHECK-REPEAT-LOOP-PASS-NEXT: Running analysis: TargetIRAnalysis
[PM] Fix a bug in the new loop PM when handling functions with no loops. Without any loops, we don't even bother to build the standard analyses used by loop passes. Without these, we can't run loop analyses or invalidate them properly. Unfortunately, we did these things in the wrong order which would allow a loop analysis manager's proxy to be built but then not have the standard analyses built. When we went to do the invalidation in the proxy thing would fall apart. In the test case provided, it would actually crash. The fix is to carefully check for loops first, and to in fact build the standard analyses before building the proxy. This allows it to correctly trigger invalidation for those standard analyses. An alternative might seem to be to look at whether there are any loops when doing invalidation, but this doesn't work when during the loop pipeline run we delete the last loop. I've even included that as a test case. It is both simpler and more robust to defer building the proxy until there are definitely the standard set of analyses and indeed loops. This bug was uncovered by enabling GlobalsAA in the pipeline. llvm-svn: 294728
2017-02-10 16:26:58 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Running analysis: InnerAnalysisManagerProxy<{{.*}}>
[PM] Rewrite the loop pass manager to use a worklist and augmented run arguments much like the CGSCC pass manager. This is a major redesign following the pattern establish for the CGSCC layer to support updates to the set of loops during the traversal of the loop nest and to support invalidation of analyses. An additional significant burden in the loop PM is that so many passes require access to a large number of function analyses. Manually ensuring these are cached, available, and preserved has been a long-standing burden in LLVM even with the help of the automatic scheduling in the old pass manager. And it made the new pass manager extremely unweildy. With this design, we can package the common analyses up while in a function pass and make them immediately available to all the loop passes. While in some cases this is unnecessary, I think the simplicity afforded is worth it. This does not (yet) address loop simplified form or LCSSA form, but those are the next things on my radar and I have a clear plan for them. While the patch is very large, most of it is either mechanically updating loop passes to the new API or the new testing for the loop PM. The code for it is reasonably compact. I have not yet updated all of the loop passes to correctly leverage the update mechanisms demonstrated in the unittests. I'll do that in follow-up patches along with improved FileCheck tests for those passes that ensure things work in more realistic scenarios. In many cases, there isn't much we can do with these until the loop simplified form and LCSSA form are in place. Differential Revision: https://reviews.llvm.org/D28292 llvm-svn: 291651
2017-01-11 14:23:21 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Starting Loop pass manager run
[New PM] Introducing PassInstrumentation framework Pass Execution Instrumentation interface enables customizable instrumentation of pass execution, as per "RFC: Pass Execution Instrumentation interface" posted 06/07/2018 on llvm-dev@ The intent is to provide a common machinery to implement all the pass-execution-debugging features like print-before/after, opt-bisect, time-passes etc. Here we get a basic implementation consisting of: * PassInstrumentationCallbacks class that handles registration of callbacks and access to them. * PassInstrumentation class that handles instrumentation-point interfaces that call into PassInstrumentationCallbacks. * Callbacks accept StringRef which is just a name of the Pass right now. There were some ideas to pass an opaque wrapper for the pointer to pass instance, however it appears that pointer does not actually identify the instance (adaptors and managers might have the same address with the pass they govern). Hence it was decided to go simple for now and then later decide on what the proper mental model of identifying a "pass in a phase of pipeline" is. * Callbacks accept llvm::Any serving as a wrapper for const IRUnit*, to remove direct dependencies on different IRUnits (e.g. Analyses). * PassInstrumentationAnalysis analysis is explicitly requested from PassManager through usual AnalysisManager::getResult. All pass managers were updated to run that to get PassInstrumentation object for instrumentation calls. * Using tuples/index_sequence getAnalysisResult helper to extract generic AnalysisManager's extra args out of a generic PassManager's extra args. This is the only way I was able to explicitly run getResult for PassInstrumentationAnalysis out of a generic code like PassManager::run or RepeatedPass::run. TODO: Upon lengthy discussions we agreed to accept this as an initial implementation and then get rid of getAnalysisResult by improving RepeatedPass implementation. * PassBuilder takes PassInstrumentationCallbacks object to pass it further into PassInstrumentationAnalysis. Callbacks registration should be performed directly through PassInstrumentationCallbacks. * new-pm tests updated to account for PassInstrumentationAnalysis being run * Added PassInstrumentation tests to PassBuilderCallbacks unit tests. Other unit tests updated with registration of the now-required PassInstrumentationAnalysis. Made getName helper to return std::string (instead of StringRef initially) to fix asan builtbot failures on CGSCC tests. Reviewers: chandlerc, philip.pfaffe Differential Revision: https://reviews.llvm.org/D47858 llvm-svn: 342664
2018-09-21 01:08:45 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Running analysis: PassInstrumentationAnalysis
[PM] Change the name of the repeating utility to something less overloaded (and simpler). Sean rightly pointed out in code review that we've started using "wrapper pass" as a specific part of the old pass manager, and in fact it is more applicable there. Here, we really have a pass *template* to build a repeated pass, so call it that. llvm-svn: 277689
2016-08-04 11:52:53 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Running pass: RepeatedPass
[PM] Rewrite the loop pass manager to use a worklist and augmented run arguments much like the CGSCC pass manager. This is a major redesign following the pattern establish for the CGSCC layer to support updates to the set of loops during the traversal of the loop nest and to support invalidation of analyses. An additional significant burden in the loop PM is that so many passes require access to a large number of function analyses. Manually ensuring these are cached, available, and preserved has been a long-standing burden in LLVM even with the help of the automatic scheduling in the old pass manager. And it made the new pass manager extremely unweildy. With this design, we can package the common analyses up while in a function pass and make them immediately available to all the loop passes. While in some cases this is unnecessary, I think the simplicity afforded is worth it. This does not (yet) address loop simplified form or LCSSA form, but those are the next things on my radar and I have a clear plan for them. While the patch is very large, most of it is either mechanically updating loop passes to the new API or the new testing for the loop PM. The code for it is reasonably compact. I have not yet updated all of the loop passes to correctly leverage the update mechanisms demonstrated in the unittests. I'll do that in follow-up patches along with improved FileCheck tests for those passes that ensure things work in more realistic scenarios. In many cases, there isn't much we can do with these until the loop simplified form and LCSSA form are in place. Differential Revision: https://reviews.llvm.org/D28292 llvm-svn: 291651
2017-01-11 14:23:21 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Starting Loop pass manager run
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Running pass: NoOpLoopPass
[PM] Rewrite the loop pass manager to use a worklist and augmented run arguments much like the CGSCC pass manager. This is a major redesign following the pattern establish for the CGSCC layer to support updates to the set of loops during the traversal of the loop nest and to support invalidation of analyses. An additional significant burden in the loop PM is that so many passes require access to a large number of function analyses. Manually ensuring these are cached, available, and preserved has been a long-standing burden in LLVM even with the help of the automatic scheduling in the old pass manager. And it made the new pass manager extremely unweildy. With this design, we can package the common analyses up while in a function pass and make them immediately available to all the loop passes. While in some cases this is unnecessary, I think the simplicity afforded is worth it. This does not (yet) address loop simplified form or LCSSA form, but those are the next things on my radar and I have a clear plan for them. While the patch is very large, most of it is either mechanically updating loop passes to the new API or the new testing for the loop PM. The code for it is reasonably compact. I have not yet updated all of the loop passes to correctly leverage the update mechanisms demonstrated in the unittests. I'll do that in follow-up patches along with improved FileCheck tests for those passes that ensure things work in more realistic scenarios. In many cases, there isn't much we can do with these until the loop simplified form and LCSSA form are in place. Differential Revision: https://reviews.llvm.org/D28292 llvm-svn: 291651
2017-01-11 14:23:21 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Finished Loop pass manager run
; CHECK-REPEAT-LOOP-PASS-NEXT: Starting Loop pass manager run
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Running pass: NoOpLoopPass
[PM] Rewrite the loop pass manager to use a worklist and augmented run arguments much like the CGSCC pass manager. This is a major redesign following the pattern establish for the CGSCC layer to support updates to the set of loops during the traversal of the loop nest and to support invalidation of analyses. An additional significant burden in the loop PM is that so many passes require access to a large number of function analyses. Manually ensuring these are cached, available, and preserved has been a long-standing burden in LLVM even with the help of the automatic scheduling in the old pass manager. And it made the new pass manager extremely unweildy. With this design, we can package the common analyses up while in a function pass and make them immediately available to all the loop passes. While in some cases this is unnecessary, I think the simplicity afforded is worth it. This does not (yet) address loop simplified form or LCSSA form, but those are the next things on my radar and I have a clear plan for them. While the patch is very large, most of it is either mechanically updating loop passes to the new API or the new testing for the loop PM. The code for it is reasonably compact. I have not yet updated all of the loop passes to correctly leverage the update mechanisms demonstrated in the unittests. I'll do that in follow-up patches along with improved FileCheck tests for those passes that ensure things work in more realistic scenarios. In many cases, there isn't much we can do with these until the loop simplified form and LCSSA form are in place. Differential Revision: https://reviews.llvm.org/D28292 llvm-svn: 291651
2017-01-11 14:23:21 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Finished Loop pass manager run
; CHECK-REPEAT-LOOP-PASS-NEXT: Starting Loop pass manager run
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Running pass: NoOpLoopPass
[PM] Rewrite the loop pass manager to use a worklist and augmented run arguments much like the CGSCC pass manager. This is a major redesign following the pattern establish for the CGSCC layer to support updates to the set of loops during the traversal of the loop nest and to support invalidation of analyses. An additional significant burden in the loop PM is that so many passes require access to a large number of function analyses. Manually ensuring these are cached, available, and preserved has been a long-standing burden in LLVM even with the help of the automatic scheduling in the old pass manager. And it made the new pass manager extremely unweildy. With this design, we can package the common analyses up while in a function pass and make them immediately available to all the loop passes. While in some cases this is unnecessary, I think the simplicity afforded is worth it. This does not (yet) address loop simplified form or LCSSA form, but those are the next things on my radar and I have a clear plan for them. While the patch is very large, most of it is either mechanically updating loop passes to the new API or the new testing for the loop PM. The code for it is reasonably compact. I have not yet updated all of the loop passes to correctly leverage the update mechanisms demonstrated in the unittests. I'll do that in follow-up patches along with improved FileCheck tests for those passes that ensure things work in more realistic scenarios. In many cases, there isn't much we can do with these until the loop simplified form and LCSSA form are in place. Differential Revision: https://reviews.llvm.org/D28292 llvm-svn: 291651
2017-01-11 14:23:21 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Finished Loop pass manager run
; CHECK-REPEAT-LOOP-PASS-NEXT: Finished Loop pass manager run
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Finished llvm::Function pass manager run
[PM] Teach the loop PM to run LoopSimplify prior to the loop pipeline. This adds the last remaining core feature of the loop pass pipeline in the new PM and removes the last of the really egregious hacks in the LICM tests. Sadly, this requires really substantial changes in the unittests in order to provide and maintain simplified loops. This is particularly hard because for example LoopSimplify will try to fold undef branches to an ideal direction and simplify the loop accordingly. Differential Revision: https://reviews.llvm.org/D28766 llvm-svn: 292709
2017-01-21 11:48:51 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Invalidating all non-preserved analyses
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
; CHECK-REPEAT-LOOP-PASS-NEXT: Finished llvm::Module pass manager run
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
define void @foo(i1 %x, i8* %p1, i8* %p2) {
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
entry:
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
store i8 42, i8* %p1
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
br i1 %x, label %loop, label %exit
loop:
[PM] Teach the AAManager and AAResults layer (the worst offender for inter-analysis dependencies) to use the new invalidation infrastructure. This teaches it to invalidate itself when any of the peer function AA results that it uses become invalid. We do this by just tracking the originating IDs. I've kept it in a somewhat clunky API since some users of AAResults are outside the new PM right now. We can clean this API up if/when those users go away. Secondly, it uses the registration on the outer analysis manager proxy to trigger deferred invalidation when a module analysis result becomes invalid. I've included test cases that specifically try to trigger use-after-free in both of these cases and they would crash or hang pretty horribly for me even without ASan. Now they work nicely. The `InvalidateAnalysis` utility pass required some tweaking to be useful in this context and it still is pretty garbage. I'd like to switch it back to the previous implementation and teach the explicit invalidate method on the AnalysisManager to take care of correctly triggering indirect invalidation, but I wanted to go ahead and send this out so folks could see how all of this stuff works together in practice. And, you know, that it does actually work. =] Differential Revision: https://reviews.llvm.org/D27205 llvm-svn: 290595
2016-12-27 16:44:39 +08:00
%tmp1 = load i8, i8* %p2
[PM] Add a generic 'repeat N times' pass wrapper to the new pass manager. While this has some utility for debugging and testing on its own, it is primarily intended to demonstrate the technique for adding custom wrappers that can provide more interesting interation behavior in a nice, orthogonal, and composable layer. Being able to write these kinds of very dynamic and customized controls for running passes was one of the motivating use cases of the new pass manager design, and this gives a hint at how they might look. The actual logic is tiny here, and most of this is just wiring in the pipeline parsing so that this can be widely used. I'm adding this now to show the wiring without a lot of business logic. This is a precursor patch for showing how a "iterate up to N times as long as we devirtualize a call" utility can be added as a separable and composable component along side the CGSCC pass management. Differential Revision: https://reviews.llvm.org/D22405 llvm-svn: 277581
2016-08-03 15:44:48 +08:00
br label %loop
exit:
[PM] Add module and function printing passes for the new pass manager. This implements the legacy passes in terms of the new ones. It adds basic testing using explicit runs of the passes. Next up will be wiring the basic output mechanism of opt up when the new pass manager is engaged unless bitcode writing is requested. llvm-svn: 199049
2014-01-12 20:15:39 +08:00
ret void
}
[PM] Teach the module-to-function adaptor to not run function passes over declarations. This is both quite unproductive and causes things to crash, for example domtree would just assert. I've added a declaration and a domtree run to the basic high-level tests for the new pass manager. llvm-svn: 227724
2015-02-01 18:47:25 +08:00
declare void @bar()