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0c1aee0b16
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
40 lines
1.8 KiB
LLVM
40 lines
1.8 KiB
LLVM
; RUN: llc -mtriple=x86_64-apple-darwin12 -filetype=obj < %s \
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; RUN: | llvm-dwarfdump -debug-dump=info - | FileCheck %s
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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"
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target triple = "x86_64-apple-macosx10.6.7"
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; Radar 9511391
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; CHECK: DW_TAG_variable
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_const_value [DW_FORM_sdata] (42)
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name {{.*}} "i"
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define i32 @foo() nounwind uwtable readnone optsize ssp {
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entry:
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tail call void @llvm.dbg.value(metadata i32 42, i64 0, metadata !6, metadata !DIExpression()), !dbg !9
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ret i32 42, !dbg !10
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}
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) nounwind readnone
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!15}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 132191)", isOptimized: true, emissionKind: 0, file: !13, enums: !14, retainedTypes: !14, subprograms: !11, imports: null)
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!1 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, file: !13, scope: !2, type: !3, function: i32 ()* @foo, variables: !12)
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!2 = !DIFile(filename: "a.c", directory: "/private/tmp")
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!3 = !DISubroutineType(types: !4)
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!4 = !{!5}
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!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!6 = !DILocalVariable(name: "i", line: 2, scope: !7, file: !2, type: !5)
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!7 = distinct !DILexicalBlock(line: 1, column: 11, file: !13, scope: !1)
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!8 = !{i32 42}
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!9 = !DILocation(line: 2, column: 12, scope: !7)
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!10 = !DILocation(line: 3, column: 2, scope: !7)
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!11 = !{!1}
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!12 = !{!6}
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!13 = !DIFile(filename: "a.c", directory: "/private/tmp")
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!14 = !{}
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!15 = !{i32 1, !"Debug Info Version", i32 3}
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