llvm-project/llvm/lib/CodeGen/CMakeLists.txt

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CMake
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add_llvm_library(LLVMCodeGen
AggressiveAntiDepBreaker.cpp
AllocationOrder.cpp
2010-06-15 12:08:14 +08:00
Analysis.cpp
AtomicExpandPass.cpp
Switch TargetTransformInfo from an immutable analysis pass that requires a TargetMachine to construct (and thus isn't always available), to an analysis group that supports layered implementations much like AliasAnalysis does. This is a pretty massive change, with a few parts that I was unable to easily separate (sorry), so I'll walk through it. The first step of this conversion was to make TargetTransformInfo an analysis group, and to sink the nonce implementations in ScalarTargetTransformInfo and VectorTargetTranformInfo into a NoTargetTransformInfo pass. This allows other passes to add a hard requirement on TTI, and assume they will always get at least on implementation. The TargetTransformInfo analysis group leverages the delegation chaining trick that AliasAnalysis uses, where the base class for the analysis group delegates to the previous analysis *pass*, allowing all but tho NoFoo analysis passes to only implement the parts of the interfaces they support. It also introduces a new trick where each pass in the group retains a pointer to the top-most pass that has been initialized. This allows passes to implement one API in terms of another API and benefit when some other pass above them in the stack has more precise results for the second API. The second step of this conversion is to create a pass that implements the TargetTransformInfo analysis using the target-independent abstractions in the code generator. This replaces the ScalarTargetTransformImpl and VectorTargetTransformImpl classes in lib/Target with a single pass in lib/CodeGen called BasicTargetTransformInfo. This class actually provides most of the TTI functionality, basing it upon the TargetLowering abstraction and other information in the target independent code generator. The third step of the conversion adds support to all TargetMachines to register custom analysis passes. This allows building those passes with access to TargetLowering or other target-specific classes, and it also allows each target to customize the set of analysis passes desired in the pass manager. The baseline LLVMTargetMachine implements this interface to add the BasicTTI pass to the pass manager, and all of the tools that want to support target-aware TTI passes call this routine on whatever target machine they end up with to add the appropriate passes. The fourth step of the conversion created target-specific TTI analysis passes for the X86 and ARM backends. These passes contain the custom logic that was previously in their extensions of the ScalarTargetTransformInfo and VectorTargetTransformInfo interfaces. I separated them into their own file, as now all of the interface bits are private and they just expose a function to create the pass itself. Then I extended these target machines to set up a custom set of analysis passes, first adding BasicTTI as a fallback, and then adding their customized TTI implementations. The fourth step required logic that was shared between the target independent layer and the specific targets to move to a different interface, as they no longer derive from each other. As a consequence, a helper functions were added to TargetLowering representing the common logic needed both in the target implementation and the codegen implementation of the TTI pass. While technically this is the only change that could have been committed separately, it would have been a nightmare to extract. The final step of the conversion was just to delete all the old boilerplate. This got rid of the ScalarTargetTransformInfo and VectorTargetTransformInfo classes, all of the support in all of the targets for producing instances of them, and all of the support in the tools for manually constructing a pass based around them. Now that TTI is a relatively normal analysis group, two things become straightforward. First, we can sink it into lib/Analysis which is a more natural layer for it to live. Second, clients of this interface can depend on it *always* being available which will simplify their code and behavior. These (and other) simplifications will follow in subsequent commits, this one is clearly big enough. Finally, I'm very aware that much of the comments and documentation needs to be updated. As soon as I had this working, and plausibly well commented, I wanted to get it committed and in front of the build bots. I'll be doing a few passes over documentation later if it sticks. Commits to update DragonEgg and Clang will be made presently. llvm-svn: 171681
2013-01-07 09:37:14 +08:00
BasicTargetTransformInfo.cpp
BranchCoalescing.cpp
BranchFolding.cpp
BranchRelaxation.cpp
BuiltinGCs.cpp
CalcSpillWeights.cpp
CallingConvLower.cpp
CodeGen.cpp
CodeGenPrepare.cpp
CountingFunctionInserter.cpp
CriticalAntiDepBreaker.cpp
DeadMachineInstructionElim.cpp
DetectDeadLanes.cpp
DFAPacketizer.cpp
Add a new codegen pass that normalizes dwarf exception handling code in preparation for code generation. The main thing it does is handle the case when eh.exception calls (and, in a future patch, eh.selector calls) are far away from landing pads. Right now in practice you only find eh.exception calls close to landing pads: either in a landing pad (the common case) or in a landing pad successor, due to loop passes shifting them about. However future exception handling improvements will result in calls far from landing pads: (1) Inlining of rewinds. Consider the following case: In function @f: ... invoke @g to label %normal unwind label %unwinds ... unwinds: %ex = call i8* @llvm.eh.exception() ... In function @g: ... invoke @something to label %continue unwind label %handler ... handler: %ex = call i8* @llvm.eh.exception() ... perform cleanups ... "rethrow exception" Now inline @g into @f. Currently this is turned into: In function @f: ... invoke @something to label %continue unwind label %handler ... handler: %ex = call i8* @llvm.eh.exception() ... perform cleanups ... invoke "rethrow exception" to label %normal unwind label %unwinds unwinds: %ex = call i8* @llvm.eh.exception() ... However we would like to simplify invoke of "rethrow exception" into a branch to the %unwinds label. Then %unwinds is no longer a landing pad, and the eh.exception call there is then far away from any landing pads. (2) Using the unwind instruction for cleanups. It would be nice to have codegen handle the following case: invoke @something to label %continue unwind label %run_cleanups ... handler: ... perform cleanups ... unwind This requires turning "unwind" into a library call, which necessarily takes a pointer to the exception as an argument (this patch also does this unwind lowering). But that means you are using eh.exception again far from a landing pad. (3) Bugpoint simplifications. When bugpoint is simplifying exception handling code it often generates eh.exception calls far from a landing pad, which then causes codegen to assert. Bugpoint then latches on to this assertion and loses sight of the original problem. Note that it is currently rare for this pass to actually do anything. And in fact it normally shouldn't do anything at all given the code coming out of llvm-gcc! But it does fire a few times in the testsuite. As far as I can see this is almost always due to the LoopStrengthReduce codegen pass introducing pointless loop preheader blocks which are landing pads and only contain a branch to another block. This other block contains an eh.exception call. So probably by tweaking LoopStrengthReduce a bit this can be avoided. llvm-svn: 72276
2009-05-23 04:36:31 +08:00
DwarfEHPrepare.cpp
EarlyIfConversion.cpp
EdgeBundles.cpp
ExecutionDepsFix.cpp
ExpandISelPseudos.cpp
ExpandPostRAPseudos.cpp
ExpandReductions.cpp
FaultMaps.cpp
FEntryInserter.cpp
FuncletLayout.cpp
GCMetadata.cpp
GCMetadataPrinter.cpp
GCRootLowering.cpp
GCStrategy.cpp
GlobalMerge.cpp
IfConversion.cpp
ImplicitNullChecks.cpp
InlineSpiller.cpp
InterferenceCache.cpp
InterleavedAccessPass.cpp
IntrinsicLowering.cpp
LatencyPriorityQueue.cpp
LazyMachineBlockFrequencyInfo.cpp
LexicalScopes.cpp
LiveDebugValues.cpp
LiveDebugVariables.cpp
LiveIntervalAnalysis.cpp
LiveInterval.cpp
LiveIntervalUnion.cpp
LivePhysRegs.cpp
LiveRangeCalc.cpp
LiveRangeEdit.cpp
LiveRangeShrink.cpp
LiveRegMatrix.cpp
LiveRegUnits.cpp
LiveStackAnalysis.cpp
LiveVariables.cpp
LLVMTargetMachine.cpp
2010-08-14 09:55:09 +08:00
LocalStackSlotAllocation.cpp
LowLevelType.cpp
LowerEmuTLS.cpp
MachineBasicBlock.cpp
MachineBlockFrequencyInfo.cpp
Implement a block placement pass based on the branch probability and block frequency analyses. This differs substantially from the existing block-placement pass in LLVM: 1) It operates on the Machine-IR in the CodeGen layer. This exposes much more (and more precise) information and opportunities. Also, the results are more stable due to fewer transforms ocurring after the pass runs. 2) It uses the generalized probability and frequency analyses. These can model static heuristics, code annotation derived heuristics as well as eventual profile loading. By basing the optimization on the analysis interface it can work from any (or a combination) of these inputs. 3) It uses a more aggressive algorithm, both building chains from tho bottom up to maximize benefit, and using an SCC-based walk to layout chains of blocks in a profitable ordering without O(N^2) iterations which the old pass involves. The pass is currently gated behind a flag, and not enabled by default because it still needs to grow some important features. Most notably, it needs to support loop aligning and careful layout of loop structures much as done by hand currently in CodePlacementOpt. Once it supports these, and has sufficient testing and quality tuning, it should replace both of these passes. Thanks to Nick Lewycky and Richard Smith for help authoring & debugging this, and to Jakob, Andy, Eric, Jim, and probably a few others I'm forgetting for reviewing and answering all my questions. Writing a backend pass is *sooo* much better now than it used to be. =D llvm-svn: 142641
2011-10-21 14:46:38 +08:00
MachineBlockPlacement.cpp
MachineBranchProbabilityInfo.cpp
MachineCombiner.cpp
MachineCopyPropagation.cpp
MachineCSE.cpp
MachineDominanceFrontier.cpp
MachineDominators.cpp
MachineFrameInfo.cpp
MachineFunction.cpp
2009-08-01 02:50:22 +08:00
MachineFunctionPass.cpp
MachineFunctionPrinterPass.cpp
MachineInstrBundle.cpp
MachineInstr.cpp
MachineLICM.cpp
MachineLoopInfo.cpp
MachineModuleInfo.cpp
MachineModuleInfoImpls.cpp
MachineOptimizationRemarkEmitter.cpp
MachineOutliner.cpp
MachinePassRegistry.cpp
MachinePipeliner.cpp
MachinePostDominators.cpp
MachineRegionInfo.cpp
MachineRegisterInfo.cpp
MachineScheduler.cpp
2010-01-13 09:02:47 +08:00
MachineSink.cpp
MachineSSAUpdater.cpp
MachineTraceMetrics.cpp
MachineVerifier.cpp
PatchableFunction.cpp
MIRPrinter.cpp
MIRPrintingPass.cpp
MacroFusion.cpp
OptimizePHIs.cpp
ParallelCG.cpp
PeepholeOptimizer.cpp
PHIElimination.cpp
PHIEliminationUtils.cpp
PostRAHazardRecognizer.cpp
PostRASchedulerList.cpp
PreISelIntrinsicLowering.cpp
2009-11-04 09:32:06 +08:00
ProcessImplicitDefs.cpp
PrologEpilogInserter.cpp
PseudoSourceValue.cpp
RegAllocBase.cpp
RegAllocBasic.cpp
RegAllocFast.cpp
RegAllocGreedy.cpp
RegAllocPBQP.cpp
RegisterClassInfo.cpp
RegisterCoalescer.cpp
2012-04-25 02:06:49 +08:00
RegisterPressure.cpp
RegisterScavenging.cpp
RenameIndependentSubregs.cpp
RegisterUsageInfo.cpp
RegUsageInfoCollector.cpp
RegUsageInfoPropagate.cpp
ResetMachineFunctionPass.cpp
SafeStack.cpp
SafeStackColoring.cpp
SafeStackLayout.cpp
ScalarizeMaskedMemIntrin.cpp
ScheduleDAG.cpp
ScheduleDAGInstrs.cpp
ScheduleDAGPrinter.cpp
2011-01-10 05:31:39 +08:00
ScoreboardHazardRecognizer.cpp
ShadowStackGCLowering.cpp
ShrinkWrap.cpp
2009-08-18 02:47:11 +08:00
SjLjEHPrepare.cpp
2009-11-04 09:32:06 +08:00
SlotIndexes.cpp
SpillPlacement.cpp
SplitKit.cpp
StackColoring.cpp
StackMapLivenessAnalysis.cpp
StackMaps.cpp
StackProtector.cpp
StackSlotColoring.cpp
TailDuplication.cpp
TailDuplicator.cpp
TargetFrameLoweringImpl.cpp
TargetInstrInfo.cpp
TargetLoweringBase.cpp
TargetLoweringObjectFileImpl.cpp
TargetOptionsImpl.cpp
TargetPassConfig.cpp
TargetRegisterInfo.cpp
TargetSchedule.cpp
TargetSubtargetInfo.cpp
TwoAddressInstructionPass.cpp
UnreachableBlockElim.cpp
VirtRegMap.cpp
WinEHPrepare.cpp
XRay: Add entry and exit sleds Summary: In this patch we implement the following parts of XRay: - Supporting a function attribute named 'function-instrument' which currently only supports 'xray-always'. We should be able to use this attribute for other instrumentation approaches. - Supporting a function attribute named 'xray-instruction-threshold' used to determine whether a function is instrumented with a minimum number of instructions (IR instruction counts). - X86-specific nop sleds as described in the white paper. - A machine function pass that adds the different instrumentation marker instructions at a very late stage. - A way of identifying which return opcode is considered "normal" for each architecture. There are some caveats here: 1) We don't handle PATCHABLE_RET in platforms other than x86_64 yet -- this means if IR used PATCHABLE_RET directly instead of a normal ret, instruction lowering for that platform might do the wrong thing. We think this should be handled at instruction selection time to by default be unpacked for platforms where XRay is not availble yet. 2) The generated section for X86 is different from what is described from the white paper for the sole reason that LLVM allows us to do this neatly. We're taking the opportunity to deviate from the white paper from this perspective to allow us to get richer information from the runtime library. Reviewers: sanjoy, eugenis, kcc, pcc, echristo, rnk Subscribers: niravd, majnemer, atrick, rnk, emaste, bmakam, mcrosier, mehdi_amini, llvm-commits Differential Revision: http://reviews.llvm.org/D19904 llvm-svn: 275367
2016-07-14 12:06:33 +08:00
XRayInstrumentation.cpp
ADDITIONAL_HEADER_DIRS
${LLVM_MAIN_INCLUDE_DIR}/llvm/CodeGen
${LLVM_MAIN_INCLUDE_DIR}/llvm/CodeGen/PBQP
LINK_LIBS ${LLVM_PTHREAD_LIB}
DEPENDS
intrinsics_gen
)
add_subdirectory(SelectionDAG)
add_subdirectory(AsmPrinter)
add_subdirectory(MIRParser)
add_subdirectory(GlobalISel)