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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
36 lines
1.5 KiB
LLVM
36 lines
1.5 KiB
LLVM
; RUN: llc -mcpu=corei7 -no-stack-coloring=false < %s
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; Make sure that we don't crash when dbg values are used.
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.8.0"
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declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
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define void @foo() nounwind uwtable ssp {
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entry:
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%x.i = alloca i8, align 1
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%y.i = alloca [256 x i8], align 16
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%0 = getelementptr inbounds [256 x i8], [256 x i8]* %y.i, i64 0, i64 0
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br label %for.body
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for.body:
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call void @llvm.lifetime.end(i64 -1, i8* %0) nounwind
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call void @llvm.lifetime.start(i64 -1, i8* %x.i) nounwind
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call void @llvm.dbg.declare(metadata i8* %x.i, metadata !22, metadata !DIExpression()) nounwind, !dbg !DILocation(scope: !2)
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br label %for.body
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}
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declare void @llvm.lifetime.start(i64, i8* nocapture) nounwind
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declare void @llvm.lifetime.end(i64, i8* nocapture) nounwind
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!23}
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!0 = distinct !DICompileUnit(language: DW_LANG_C89, producer: "clang", isOptimized: true, emissionKind: 0, file: !1, enums: !{}, retainedTypes: !{})
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!1 = !DIFile(filename: "t.c", directory: "")
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!16 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
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!2 = distinct !DISubprogram()
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!22 = !DILocalVariable(name: "x", line: 16, scope: !2, file: !1, type: !16)
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!23 = !{i32 1, !"Debug Info Version", i32 3}
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