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Reapply "Linker: Drop superseded subprograms" This reverts commit r224416, reapplying r224389. The buildbots hadn't recovered after my revert, waiting until David reverted a couple of his commits. It looks like it was just bad timing (where we were both modifying code related to the same assertion). Trying again... Here's the original text: When a function gets replaced by `ModuleLinker`, drop superseded subprograms. This ensures that the "first" subprogram pointing at a function is the same one that `!dbg` references point at. This is a stop-gap fix for PR21910. Notably, this fixes Release+Asserts bootstraps that are currently asserting out in `LexicalScopes::initialize()` due to the explicit instantiations in `lib/IR/Dominators.cpp` eventually getting replaced by -argpromotion. llvm-svn: 224487
2014-12-18 09:05:33 +08:00
; RUN: llvm-link %s %S/Inputs/replaced-function-matches-first-subprogram.ll -S | FileCheck %s
; Generated from C++ source:
;
; // repro/t.h
; template <class T> struct Class {
; int foo() { return 0; }
; };
; // repro/d1/t1.cpp
; #include "t.h"
; int foo() { return Class<int>().foo(); }
; // repro/d2/t2.cpp
; #include "t.h"
; template struct Class<int>;
%struct.Class = type { i8 }
DI: Reverse direction of subprogram -> function edge. Previously, subprograms contained a metadata reference to the function they described. Because most clients need to get or set a subprogram for a given function rather than the other way around, this created unneeded inefficiency. For example, many passes needed to call the function llvm::makeSubprogramMap() to build a mapping from functions to subprograms, and the IR linker needed to fix up function references in a way that caused quadratic complexity in the IR linking phase of LTO. This change reverses the direction of the edge by storing the subprogram as function-level metadata and removing DISubprogram's function field. Since this is an IR change, a bitcode upgrade has been provided. Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is attached to the PR. Differential Revision: http://reviews.llvm.org/D14265 llvm-svn: 252219
2015-11-06 06:03:56 +08:00
; CHECK: define i32 @_Z3foov(){{.*}} !dbg ![[SP1:[0-9]+]]
define i32 @_Z3foov() !dbg !4 {
Reapply "Linker: Drop superseded subprograms" This reverts commit r224416, reapplying r224389. The buildbots hadn't recovered after my revert, waiting until David reverted a couple of his commits. It looks like it was just bad timing (where we were both modifying code related to the same assertion). Trying again... Here's the original text: When a function gets replaced by `ModuleLinker`, drop superseded subprograms. This ensures that the "first" subprogram pointing at a function is the same one that `!dbg` references point at. This is a stop-gap fix for PR21910. Notably, this fixes Release+Asserts bootstraps that are currently asserting out in `LexicalScopes::initialize()` due to the explicit instantiations in `lib/IR/Dominators.cpp` eventually getting replaced by -argpromotion. llvm-svn: 224487
2014-12-18 09:05:33 +08:00
entry:
%tmp = alloca %struct.Class, align 1
%call = call i32 @_ZN5ClassIiE3fooEv(%struct.Class* %tmp), !dbg !14
ret i32 %call, !dbg !14
}
DI: Reverse direction of subprogram -> function edge. Previously, subprograms contained a metadata reference to the function they described. Because most clients need to get or set a subprogram for a given function rather than the other way around, this created unneeded inefficiency. For example, many passes needed to call the function llvm::makeSubprogramMap() to build a mapping from functions to subprograms, and the IR linker needed to fix up function references in a way that caused quadratic complexity in the IR linking phase of LTO. This change reverses the direction of the edge by storing the subprogram as function-level metadata and removing DISubprogram's function field. Since this is an IR change, a bitcode upgrade has been provided. Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is attached to the PR. Differential Revision: http://reviews.llvm.org/D14265 llvm-svn: 252219
2015-11-06 06:03:56 +08:00
; CHECK: define weak_odr i32 @_ZN5ClassIiE3fooEv(%struct.Class* %this){{.*}} !dbg ![[SP2:[0-9]+]] {
Reapply "Linker: Drop superseded subprograms" This reverts commit r224416, reapplying r224389. The buildbots hadn't recovered after my revert, waiting until David reverted a couple of his commits. It looks like it was just bad timing (where we were both modifying code related to the same assertion). Trying again... Here's the original text: When a function gets replaced by `ModuleLinker`, drop superseded subprograms. This ensures that the "first" subprogram pointing at a function is the same one that `!dbg` references point at. This is a stop-gap fix for PR21910. Notably, this fixes Release+Asserts bootstraps that are currently asserting out in `LexicalScopes::initialize()` due to the explicit instantiations in `lib/IR/Dominators.cpp` eventually getting replaced by -argpromotion. llvm-svn: 224487
2014-12-18 09:05:33 +08:00
; CHECK-NOT: }
; CHECK: !dbg ![[LOC:[0-9]+]]
DI: Reverse direction of subprogram -> function edge. Previously, subprograms contained a metadata reference to the function they described. Because most clients need to get or set a subprogram for a given function rather than the other way around, this created unneeded inefficiency. For example, many passes needed to call the function llvm::makeSubprogramMap() to build a mapping from functions to subprograms, and the IR linker needed to fix up function references in a way that caused quadratic complexity in the IR linking phase of LTO. This change reverses the direction of the edge by storing the subprogram as function-level metadata and removing DISubprogram's function field. Since this is an IR change, a bitcode upgrade has been provided. Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is attached to the PR. Differential Revision: http://reviews.llvm.org/D14265 llvm-svn: 252219
2015-11-06 06:03:56 +08:00
define linkonce_odr i32 @_ZN5ClassIiE3fooEv(%struct.Class* %this) align 2 !dbg !7 {
Reapply "Linker: Drop superseded subprograms" This reverts commit r224416, reapplying r224389. The buildbots hadn't recovered after my revert, waiting until David reverted a couple of his commits. It looks like it was just bad timing (where we were both modifying code related to the same assertion). Trying again... Here's the original text: When a function gets replaced by `ModuleLinker`, drop superseded subprograms. This ensures that the "first" subprogram pointing at a function is the same one that `!dbg` references point at. This is a stop-gap fix for PR21910. Notably, this fixes Release+Asserts bootstraps that are currently asserting out in `LexicalScopes::initialize()` due to the explicit instantiations in `lib/IR/Dominators.cpp` eventually getting replaced by -argpromotion. llvm-svn: 224487
2014-12-18 09:05:33 +08:00
entry:
%this.addr = alloca %struct.Class*, align 8
store %struct.Class* %this, %struct.Class** %this.addr, align 8
[opaque pointer type] Add textual IR support for explicit type parameter to load instruction Essentially the same as the GEP change in r230786. A similar migration script can be used to update test cases, though a few more test case improvements/changes were required this time around: (r229269-r229278) import fileinput import sys import re pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)") for line in sys.stdin: sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line)) Reviewers: rafael, dexonsmith, grosser Differential Revision: http://reviews.llvm.org/D7649 llvm-svn: 230794
2015-02-28 05:17:42 +08:00
%this1 = load %struct.Class*, %struct.Class** %this.addr
Reapply "Linker: Drop superseded subprograms" This reverts commit r224416, reapplying r224389. The buildbots hadn't recovered after my revert, waiting until David reverted a couple of his commits. It looks like it was just bad timing (where we were both modifying code related to the same assertion). Trying again... Here's the original text: When a function gets replaced by `ModuleLinker`, drop superseded subprograms. This ensures that the "first" subprogram pointing at a function is the same one that `!dbg` references point at. This is a stop-gap fix for PR21910. Notably, this fixes Release+Asserts bootstraps that are currently asserting out in `LexicalScopes::initialize()` due to the explicit instantiations in `lib/IR/Dominators.cpp` eventually getting replaced by -argpromotion. llvm-svn: 224487
2014-12-18 09:05:33 +08:00
ret i32 0, !dbg !15
}
; CHECK: !llvm.dbg.cu = !{![[CU1:[0-9]+]], ![[CU2:[0-9]+]]}
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!10, !11, !12}
!llvm.ident = !{!13}
; Extract out the list of subprograms from each compile unit.
[PR27284] Reverse the ownership between DICompileUnit and DISubprogram. Currently each Function points to a DISubprogram and DISubprogram has a scope field. For member functions the scope is a DICompositeType. DIScopes point to the DICompileUnit to facilitate type uniquing. Distinct DISubprograms (with isDefinition: true) are not part of the type hierarchy and cannot be uniqued. This change removes the subprograms list from DICompileUnit and instead adds a pointer to the owning compile unit to distinct DISubprograms. This would make it easy for ThinLTO to strip unneeded DISubprograms and their transitively referenced debug info. Motivation ---------- Materializing DISubprograms is currently the most expensive operation when doing a ThinLTO build of clang. We want the DISubprogram to be stored in a separate Bitcode block (or the same block as the function body) so we can avoid having to expensively deserialize all DISubprograms together with the global metadata. If a function has been inlined into another subprogram we need to store a reference the block containing the inlined subprogram. Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script that updates LLVM IR testcases to the new format. http://reviews.llvm.org/D19034 <rdar://problem/25256815> llvm-svn: 266446
2016-04-15 23:57:41 +08:00
; CHECK: ![[CU1:[0-9]+]] = distinct !DICompileUnit(
; CHECK: ![[CU2:[0-9]+]] = distinct !DICompileUnit(
!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (trunk 224193) (llvm/trunk 224197)", isOptimized: false, emissionKind: LineTablesOnly, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
IR: Give 'DI' prefix to debug info metadata Finish off PR23080 by renaming the debug info IR constructs from `MD*` to `DI*`. The last of the `DIDescriptor` classes were deleted in r235356, and the last of the related typedefs removed in r235413, so this has all baked for about a week. Note: If you have out-of-tree code (like a frontend), I recommend that you get everything compiling and tests passing with the *previous* commit before updating to this one. It'll be easier to keep track of what code is using the `DIDescriptor` hierarchy and what you've already updated, and I think you're extremely unlikely to insert bugs. YMMV of course. Back to *this* commit: I did this using the rename-md-di-nodes.sh upgrade script I've attached to PR23080 (both code and testcases) and filtered through clang-format-diff.py. I edited the tests for test/Assembler/invalid-generic-debug-node-*.ll by hand since the columns were off-by-three. It should work on your out-of-tree testcases (and code, if you've followed the advice in the previous paragraph). Some of the tests are in badly named files now (e.g., test/Assembler/invalid-mdcompositetype-missing-tag.ll should be 'dicompositetype'); I'll come back and move the files in a follow-up commit. llvm-svn: 236120
2015-04-30 00:38:44 +08:00
!1 = !DIFile(filename: "t1.cpp", directory: "/Users/dexonsmith/data/llvm/staging/test/Linker/repro/d1")
Reapply "Linker: Drop superseded subprograms" This reverts commit r224416, reapplying r224389. The buildbots hadn't recovered after my revert, waiting until David reverted a couple of his commits. It looks like it was just bad timing (where we were both modifying code related to the same assertion). Trying again... Here's the original text: When a function gets replaced by `ModuleLinker`, drop superseded subprograms. This ensures that the "first" subprogram pointing at a function is the same one that `!dbg` references point at. This is a stop-gap fix for PR21910. Notably, this fixes Release+Asserts bootstraps that are currently asserting out in `LexicalScopes::initialize()` due to the explicit instantiations in `lib/IR/Dominators.cpp` eventually getting replaced by -argpromotion. llvm-svn: 224487
2014-12-18 09:05:33 +08:00
!2 = !{}
[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
2018-05-09 10:40:45 +08:00
!4 = distinct !DISubprogram(name: "foo", line: 2, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, retainedNodes: !2)
IR: Give 'DI' prefix to debug info metadata Finish off PR23080 by renaming the debug info IR constructs from `MD*` to `DI*`. The last of the `DIDescriptor` classes were deleted in r235356, and the last of the related typedefs removed in r235413, so this has all baked for about a week. Note: If you have out-of-tree code (like a frontend), I recommend that you get everything compiling and tests passing with the *previous* commit before updating to this one. It'll be easier to keep track of what code is using the `DIDescriptor` hierarchy and what you've already updated, and I think you're extremely unlikely to insert bugs. YMMV of course. Back to *this* commit: I did this using the rename-md-di-nodes.sh upgrade script I've attached to PR23080 (both code and testcases) and filtered through clang-format-diff.py. I edited the tests for test/Assembler/invalid-generic-debug-node-*.ll by hand since the columns were off-by-three. It should work on your out-of-tree testcases (and code, if you've followed the advice in the previous paragraph). Some of the tests are in badly named files now (e.g., test/Assembler/invalid-mdcompositetype-missing-tag.ll should be 'dicompositetype'); I'll come back and move the files in a follow-up commit. llvm-svn: 236120
2015-04-30 00:38:44 +08:00
!5 = !DIFile(filename: "t1.cpp", directory: "/Users/dexonsmith/data/llvm/staging/test/Linker/repro/d1")
!6 = !DISubroutineType(types: !2)
Reapply "Linker: Drop superseded subprograms" This reverts commit r224416, reapplying r224389. The buildbots hadn't recovered after my revert, waiting until David reverted a couple of his commits. It looks like it was just bad timing (where we were both modifying code related to the same assertion). Trying again... Here's the original text: When a function gets replaced by `ModuleLinker`, drop superseded subprograms. This ensures that the "first" subprogram pointing at a function is the same one that `!dbg` references point at. This is a stop-gap fix for PR21910. Notably, this fixes Release+Asserts bootstraps that are currently asserting out in `LexicalScopes::initialize()` due to the explicit instantiations in `lib/IR/Dominators.cpp` eventually getting replaced by -argpromotion. llvm-svn: 224487
2014-12-18 09:05:33 +08:00
DI: Reverse direction of subprogram -> function edge. Previously, subprograms contained a metadata reference to the function they described. Because most clients need to get or set a subprogram for a given function rather than the other way around, this created unneeded inefficiency. For example, many passes needed to call the function llvm::makeSubprogramMap() to build a mapping from functions to subprograms, and the IR linker needed to fix up function references in a way that caused quadratic complexity in the IR linking phase of LTO. This change reverses the direction of the edge by storing the subprogram as function-level metadata and removing DISubprogram's function field. Since this is an IR change, a bitcode upgrade has been provided. Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is attached to the PR. Differential Revision: http://reviews.llvm.org/D14265 llvm-svn: 252219
2015-11-06 06:03:56 +08:00
; Extract out the file from the replaced subprogram.
[PR27284] Reverse the ownership between DICompileUnit and DISubprogram. Currently each Function points to a DISubprogram and DISubprogram has a scope field. For member functions the scope is a DICompositeType. DIScopes point to the DICompileUnit to facilitate type uniquing. Distinct DISubprograms (with isDefinition: true) are not part of the type hierarchy and cannot be uniqued. This change removes the subprograms list from DICompileUnit and instead adds a pointer to the owning compile unit to distinct DISubprograms. This would make it easy for ThinLTO to strip unneeded DISubprograms and their transitively referenced debug info. Motivation ---------- Materializing DISubprograms is currently the most expensive operation when doing a ThinLTO build of clang. We want the DISubprogram to be stored in a separate Bitcode block (or the same block as the function body) so we can avoid having to expensively deserialize all DISubprograms together with the global metadata. If a function has been inlined into another subprogram we need to store a reference the block containing the inlined subprogram. Attached to https://llvm.org/bugs/show_bug.cgi?id=27284 is a python script that updates LLVM IR testcases to the new format. http://reviews.llvm.org/D19034 <rdar://problem/25256815> llvm-svn: 266446
2016-04-15 23:57:41 +08:00
; CHECK-DAG: ![[SP2:.*]] = distinct !DISubprogram({{.*}} file: ![[FILE:[0-9]+]],{{.*}}, unit: ![[CU2]]
Reapply "Linker: Drop function pointers for overridden subprograms" This reverts commit r233254, effectively reapplying r233164 (and its successors), with an additional testcase for when subprograms match exactly. This fixes PR22792 (again). I'm using the same approach, but I've moved up the call to `stripReplacedSubprograms()`. The function pointers need to be dropped before mapping any metadata from the source module, or else this can drop the function from new subprograms that have merged (via Metadata uniquing) with the old ones. Dropping the pointers first prevents them from merging. **** The original commit message follows. **** Linker: Drop function pointers for overridden subprograms Instead of dropping subprograms that have been overridden, just set their function pointers to `nullptr`. This is a minor adjustment to the stop-gap fix for PR21910 committed in r224487, and fixes the crasher from PR22792. The problem that r224487 put a band-aid on: how do we find the canonical subprogram for a `Function`? Since the backend currently relies on `DebugInfoFinder` (which does a naive in-order traversal of compile units and picks the first subprogram) for this, r224487 tried dropping non-canonical subprograms. Dropping subprograms fails because the backend *also* builds up a map from subprogram to compile unit (`DwarfDebug::SPMap`) based on the subprogram lists. A missing subprogram causes segfaults later when an inlined reference (such as in this testcase) is created. Instead, just drop the `Function` pointer to `nullptr`, which nicely mirrors what happens when an already-inlined `Function` is optimized out. We can't really be sure that it's the same definition anyway, as the testcase demonstrates. This still isn't completely satisfactory. Two flaws at least that I can think of: - I still haven't found a straightforward way to make this symmetric in the IR. (Interestingly, the DWARF output is already symmetric, and I've tested for that to be sure we don't regress.) - Using `DebugInfoFinder` to find the canonical subprogram for a function is kind of crazy. We should just attach metadata to the function, like this: define weak i32 @foo(i32, i32) !dbg !MDSubprogram(...) { llvm-svn: 233302
2015-03-27 02:35:30 +08:00
; We can't use CHECK-NOT/CHECK-SAME with a CHECK-DAG, so rely on field order to
; prove that there's no function: here.
[DebugInfo] IR/Bitcode changes for DISubprogram flags. Packing the flags into one bitcode word will save effort in adding new flags in the future. Differential Revision: https://reviews.llvm.org/D54755 llvm-svn: 347806
2018-11-29 05:14:32 +08:00
; CHECK-DAG: ![[SP2r:.*]] = {{.*}}!DISubprogram({{.*}} unit: ![[CU1]], retainedNodes:
[DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. In order to set breakpoints on labels and list source code around labels, we need collect debug information for labels, i.e., label name, the function label belong, line number in the file, and the address label located. In order to keep these information in LLVM IR and to allow backend to generate debug information correctly. We create a new kind of metadata for labels, DILabel. The format of DILabel is !DILabel(scope: !1, name: "foo", file: !2, line: 3) We hope to keep debug information as much as possible even the code is optimized. So, we create a new kind of intrinsic for label metadata to avoid the metadata is eliminated with basic block. The intrinsic will keep existing if we keep it from optimized out. The format of the intrinsic is llvm.dbg.label(metadata !1) It has only one argument, that is the DILabel metadata. The intrinsic will follow the label immediately. Backend could get the label metadata through the intrinsic's parameter. We also create DIBuilder API for labels to be used by Frontend. Frontend could use createLabel() to allocate DILabel objects, and use insertLabel() to insert llvm.dbg.label intrinsic in LLVM IR. Differential Revision: https://reviews.llvm.org/D45024 Patch by Hsiangkai Wang. llvm-svn: 331841
2018-05-09 10:40:45 +08:00
!7 = distinct !DISubprogram(name: "foo", line: 2, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 2, file: !8, scope: !9, type: !6, retainedNodes: !2)
Reapply "Linker: Drop superseded subprograms" This reverts commit r224416, reapplying r224389. The buildbots hadn't recovered after my revert, waiting until David reverted a couple of his commits. It looks like it was just bad timing (where we were both modifying code related to the same assertion). Trying again... Here's the original text: When a function gets replaced by `ModuleLinker`, drop superseded subprograms. This ensures that the "first" subprogram pointing at a function is the same one that `!dbg` references point at. This is a stop-gap fix for PR21910. Notably, this fixes Release+Asserts bootstraps that are currently asserting out in `LexicalScopes::initialize()` due to the explicit instantiations in `lib/IR/Dominators.cpp` eventually getting replaced by -argpromotion. llvm-svn: 224487
2014-12-18 09:05:33 +08:00
; The new subprogram should be pointing at the new directory.
IR: Give 'DI' prefix to debug info metadata Finish off PR23080 by renaming the debug info IR constructs from `MD*` to `DI*`. The last of the `DIDescriptor` classes were deleted in r235356, and the last of the related typedefs removed in r235413, so this has all baked for about a week. Note: If you have out-of-tree code (like a frontend), I recommend that you get everything compiling and tests passing with the *previous* commit before updating to this one. It'll be easier to keep track of what code is using the `DIDescriptor` hierarchy and what you've already updated, and I think you're extremely unlikely to insert bugs. YMMV of course. Back to *this* commit: I did this using the rename-md-di-nodes.sh upgrade script I've attached to PR23080 (both code and testcases) and filtered through clang-format-diff.py. I edited the tests for test/Assembler/invalid-generic-debug-node-*.ll by hand since the columns were off-by-three. It should work on your out-of-tree testcases (and code, if you've followed the advice in the previous paragraph). Some of the tests are in badly named files now (e.g., test/Assembler/invalid-mdcompositetype-missing-tag.ll should be 'dicompositetype'); I'll come back and move the files in a follow-up commit. llvm-svn: 236120
2015-04-30 00:38:44 +08:00
; CHECK-DAG: ![[FILE]] = !DIFile(filename: "../t.h", directory: "/Users/dexonsmith/data/llvm/staging/test/Linker/repro/d2")
!8 = !DIFile(filename: "../t.h", directory: "/Users/dexonsmith/data/llvm/staging/test/Linker/repro/d1")
!9 = !DIFile(filename: "../t.h", directory: "/Users/dexonsmith/data/llvm/staging/test/Linker/repro/d1")
Reapply "Linker: Drop superseded subprograms" This reverts commit r224416, reapplying r224389. The buildbots hadn't recovered after my revert, waiting until David reverted a couple of his commits. It looks like it was just bad timing (where we were both modifying code related to the same assertion). Trying again... Here's the original text: When a function gets replaced by `ModuleLinker`, drop superseded subprograms. This ensures that the "first" subprogram pointing at a function is the same one that `!dbg` references point at. This is a stop-gap fix for PR21910. Notably, this fixes Release+Asserts bootstraps that are currently asserting out in `LexicalScopes::initialize()` due to the explicit instantiations in `lib/IR/Dominators.cpp` eventually getting replaced by -argpromotion. llvm-svn: 224487
2014-12-18 09:05:33 +08:00
!10 = !{i32 2, !"Dwarf Version", i32 2}
DebugInfo: Move new hierarchy into place Move the specialized metadata nodes for the new debug info hierarchy into place, finishing off PR22464. I've done bootstraps (and all that) and I'm confident this commit is NFC as far as DWARF output is concerned. Let me know if I'm wrong :). The code changes are fairly mechanical: - Bumped the "Debug Info Version". - `DIBuilder` now creates the appropriate subclass of `MDNode`. - Subclasses of DIDescriptor now expect to hold their "MD" counterparts (e.g., `DIBasicType` expects `MDBasicType`). - Deleted a ton of dead code in `AsmWriter.cpp` and `DebugInfo.cpp` for printing comments. - Big update to LangRef to describe the nodes in the new hierarchy. Feel free to make it better. Testcase changes are enormous. There's an accompanying clang commit on its way. If you have out-of-tree debug info testcases, I just broke your build. - `upgrade-specialized-nodes.sh` is attached to PR22564. I used it to update all the IR testcases. - Unfortunately I failed to find way to script the updates to CHECK lines, so I updated all of these by hand. This was fairly painful, since the old CHECKs are difficult to reason about. That's one of the benefits of the new hierarchy. This work isn't quite finished, BTW. The `DIDescriptor` subclasses are almost empty wrappers, but not quite: they still have loose casting checks (see the `RETURN_FROM_RAW()` macro). Once they're completely gutted, I'll rename the "MD" classes to "DI" and kill the wrappers. I also expect to make a few schema changes now that it's easier to reason about everything. llvm-svn: 231082
2015-03-04 01:24:31 +08:00
!11 = !{i32 2, !"Debug Info Version", i32 3}
Reapply "Linker: Drop superseded subprograms" This reverts commit r224416, reapplying r224389. The buildbots hadn't recovered after my revert, waiting until David reverted a couple of his commits. It looks like it was just bad timing (where we were both modifying code related to the same assertion). Trying again... Here's the original text: When a function gets replaced by `ModuleLinker`, drop superseded subprograms. This ensures that the "first" subprogram pointing at a function is the same one that `!dbg` references point at. This is a stop-gap fix for PR21910. Notably, this fixes Release+Asserts bootstraps that are currently asserting out in `LexicalScopes::initialize()` due to the explicit instantiations in `lib/IR/Dominators.cpp` eventually getting replaced by -argpromotion. llvm-svn: 224487
2014-12-18 09:05:33 +08:00
!12 = !{i32 1, !"PIC Level", i32 2}
!13 = !{!"clang version 3.6.0 (trunk 224193) (llvm/trunk 224197)"}
IR: Give 'DI' prefix to debug info metadata Finish off PR23080 by renaming the debug info IR constructs from `MD*` to `DI*`. The last of the `DIDescriptor` classes were deleted in r235356, and the last of the related typedefs removed in r235413, so this has all baked for about a week. Note: If you have out-of-tree code (like a frontend), I recommend that you get everything compiling and tests passing with the *previous* commit before updating to this one. It'll be easier to keep track of what code is using the `DIDescriptor` hierarchy and what you've already updated, and I think you're extremely unlikely to insert bugs. YMMV of course. Back to *this* commit: I did this using the rename-md-di-nodes.sh upgrade script I've attached to PR23080 (both code and testcases) and filtered through clang-format-diff.py. I edited the tests for test/Assembler/invalid-generic-debug-node-*.ll by hand since the columns were off-by-three. It should work on your out-of-tree testcases (and code, if you've followed the advice in the previous paragraph). Some of the tests are in badly named files now (e.g., test/Assembler/invalid-mdcompositetype-missing-tag.ll should be 'dicompositetype'); I'll come back and move the files in a follow-up commit. llvm-svn: 236120
2015-04-30 00:38:44 +08:00
!14 = !DILocation(line: 2, column: 20, scope: !4)
Reapply "Linker: Drop superseded subprograms" This reverts commit r224416, reapplying r224389. The buildbots hadn't recovered after my revert, waiting until David reverted a couple of his commits. It looks like it was just bad timing (where we were both modifying code related to the same assertion). Trying again... Here's the original text: When a function gets replaced by `ModuleLinker`, drop superseded subprograms. This ensures that the "first" subprogram pointing at a function is the same one that `!dbg` references point at. This is a stop-gap fix for PR21910. Notably, this fixes Release+Asserts bootstraps that are currently asserting out in `LexicalScopes::initialize()` due to the explicit instantiations in `lib/IR/Dominators.cpp` eventually getting replaced by -argpromotion. llvm-svn: 224487
2014-12-18 09:05:33 +08:00
; The same subprogram should be pointed to by inside the !dbg reference.
IR: Give 'DI' prefix to debug info metadata Finish off PR23080 by renaming the debug info IR constructs from `MD*` to `DI*`. The last of the `DIDescriptor` classes were deleted in r235356, and the last of the related typedefs removed in r235413, so this has all baked for about a week. Note: If you have out-of-tree code (like a frontend), I recommend that you get everything compiling and tests passing with the *previous* commit before updating to this one. It'll be easier to keep track of what code is using the `DIDescriptor` hierarchy and what you've already updated, and I think you're extremely unlikely to insert bugs. YMMV of course. Back to *this* commit: I did this using the rename-md-di-nodes.sh upgrade script I've attached to PR23080 (both code and testcases) and filtered through clang-format-diff.py. I edited the tests for test/Assembler/invalid-generic-debug-node-*.ll by hand since the columns were off-by-three. It should work on your out-of-tree testcases (and code, if you've followed the advice in the previous paragraph). Some of the tests are in badly named files now (e.g., test/Assembler/invalid-mdcompositetype-missing-tag.ll should be 'dicompositetype'); I'll come back and move the files in a follow-up commit. llvm-svn: 236120
2015-04-30 00:38:44 +08:00
; CHECK: ![[LOC]] = !DILocation(line: 2, column: 15, scope: ![[SP2]])
!15 = !DILocation(line: 2, column: 15, scope: !7)