814b8e91c7
As a follow-up to r246098, require `DISubprogram` definitions
(`isDefinition: true`) to be 'distinct'. Specifically, add an assembler
check, a verifier check, and bitcode upgrading logic to combat testcase
bitrot after the `DIBuilder` change.
While working on the testcases, I realized that
test/Linker/subprogram-linkonce-weak-odr.ll isn't relevant anymore. Its
purpose was to check for a corner case in PR22792 where two subprogram
definitions match exactly and share the same metadata node. The new
verifier check, requiring that subprogram definitions are 'distinct',
precludes that possibility.
I updated almost all the IR with the following script:
git grep -l -E -e '= !DISubprogram\(.* isDefinition: true' |
grep -v test/Bitcode |
xargs sed -i '' -e 's/= \(!DISubprogram(.*, isDefinition: true\)/= distinct \1/'
Likely some variant of would work for out-of-tree testcases.
llvm-svn: 246327
25 lines
1.1 KiB
LLVM
25 lines
1.1 KiB
LLVM
; RUN: opt -S -simplifycfg < %s | FileCheck %s
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; Radar 9342286
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; Assign DebugLoc to trap instruction.
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define void @foo() nounwind ssp {
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; CHECK: call void @llvm.trap(), !dbg
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store i32 42, i32* null, !dbg !5
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ret void, !dbg !7
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}
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!10}
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!llvm.dbg.sp = !{!0}
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!0 = distinct !DISubprogram(name: "foo", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, file: !8, scope: !1, type: !3, function: void ()* @foo)
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!1 = !DIFile(filename: "foo.c", directory: "/private/tmp")
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "Apple clang version 3.0 (tags/Apple/clang-206.1) (based on LLVM 3.0svn)", isOptimized: true, emissionKind: 0, file: !8, enums: !{}, retainedTypes: !{}, subprograms: !9)
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!3 = !DISubroutineType(types: !4)
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!4 = !{null}
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!5 = !DILocation(line: 4, column: 2, scope: !6)
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!6 = distinct !DILexicalBlock(line: 3, column: 12, file: !8, scope: !0)
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!7 = !DILocation(line: 5, column: 1, scope: !6)
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!8 = !DIFile(filename: "foo.c", directory: "/private/tmp")
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!9 = !{!0}
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!10 = !{i32 1, !"Debug Info Version", i32 3}
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