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a5ae7c1c9f
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246327 91177308-0d34-0410-b5e6-96231b3b80d8
44 lines
1.9 KiB
LLVM
44 lines
1.9 KiB
LLVM
; RUN: llc -mcpu=core2 -mtriple=i686-pc-win32 -o - -O0 < %s | llvm-mc -triple=i686-pc-win32 -filetype=obj | llvm-readobj -s -sr -codeview -section-symbols | FileCheck %s
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; This LL file was generated by running clang on the following code:
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; D:\src.cpp:
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; 1 namespace foo {
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; 2 int bar(int x) {
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; 3 return x * 2;
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; 4 }
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; 5 }
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; CHECK: ProcStart {
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; FIXME: The display name should in fact be "foo::bar", see PR21528
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; CHECK-NEXT: DisplayName: ?bar@foo@@YAHH@Z
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; CHECK-NEXT: Section: ?bar@foo@@YAHH@Z
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; Function Attrs: nounwind
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define i32 @"\01?bar@foo@@YAHH@Z"(i32 %x) #0 {
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entry:
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%x.addr = alloca i32, align 4
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store i32 %x, i32* %x.addr, align 4
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%0 = load i32, i32* %x.addr, align 4, !dbg !11
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%mul = mul nsw i32 %0, 2, !dbg !11
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ret i32 %mul, !dbg !11
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}
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attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!8, !9}
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!llvm.ident = !{!10}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 2, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
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!1 = !DIFile(filename: "<stdin>", directory: "D:\5C")
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!2 = !{}
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!3 = !{!4}
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!4 = distinct !DISubprogram(name: "bar", line: 2, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 2, file: !5, scope: !6, type: !7, function: i32 (i32)* @"\01?bar@foo@@YAHH@Z", variables: !2)
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!5 = !DIFile(filename: "src.cpp", directory: "D:\5C")
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!6 = !DIFile(filename: "src.cpp", directory: "D:C")
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!7 = !DISubroutineType(types: !2)
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!8 = !{i32 2, !"CodeView", i32 1}
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!9 = !{i32 2, !"Debug Info Version", i32 3}
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!10 = !{!"clang version 3.6.0 "}
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!11 = !DILocation(line: 3, scope: !4)
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