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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
79 lines
4.1 KiB
LLVM
79 lines
4.1 KiB
LLVM
; REQUIRES: object-emission
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;
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; RUN: %llc_dwarf -filetype=obj -O0 -dwarf-linkage-names=Enable < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
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; Make sure we can handle enums with the same identifier but in enum types of
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; different compile units.
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; rdar://17628609
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; CHECK: DW_TAG_compile_unit
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; CHECK: 0x[[ENUM:.*]]: DW_TAG_enumeration_type
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; CHECK-NEXT: DW_AT_name {{.*}} "EA"
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; CHECK: DW_TAG_subprogram
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; CHECK: DW_AT_MIPS_linkage_name {{.*}} "_Z4topA2EA"
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; CHECK: DW_TAG_formal_parameter
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; CHECK: DW_AT_type [DW_FORM_ref4] (cu + 0x{{.*}} => {0x[[ENUM]]})
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; CHECK: DW_TAG_compile_unit
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; CHECK: DW_TAG_subprogram
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; CHECK: DW_AT_MIPS_linkage_name {{.*}} "_Z4topB2EA"
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; CHECK: DW_TAG_formal_parameter
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; CHECK: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[ENUM]]
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; Function Attrs: nounwind ssp uwtable
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define void @_Z4topA2EA(i32 %sa) #0 {
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entry:
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%sa.addr = alloca i32, align 4
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store i32 %sa, i32* %sa.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %sa.addr, metadata !22, metadata !DIExpression()), !dbg !23
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ret void, !dbg !24
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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; Function Attrs: nounwind ssp uwtable
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define void @_Z4topB2EA(i32 %sa) #0 {
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entry:
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%sa.addr = alloca i32, align 4
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store i32 %sa, i32* %sa.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %sa.addr, metadata !25, metadata !DIExpression()), !dbg !26
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ret void, !dbg !27
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}
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attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0, !12}
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!llvm.module.flags = !{!19, !20}
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!llvm.ident = !{!21, !21}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (trunk 214102:214133) (llvm/trunk 214102:214132)", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !6, globals: !11, imports: !11)
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!1 = !DIFile(filename: "a.cpp", directory: "")
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!2 = !{!3}
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!3 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "EA", line: 1, size: 32, align: 32, file: !1, elements: !4, identifier: "_ZTS2EA")
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!4 = !{!5}
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!5 = !DIEnumerator(name: "EA_0", value: 0) ; [ DW_TAG_enumerator ] [EA_0 :: 0]
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!6 = !{!7}
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!7 = distinct !DISubprogram(name: "topA", linkageName: "_Z4topA2EA", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !8, type: !9, function: void (i32)* @_Z4topA2EA, variables: !11)
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!8 = !DIFile(filename: "a.cpp", directory: "")
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!9 = !DISubroutineType(types: !10)
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!10 = !{null, !"_ZTS2EA"}
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!11 = !{}
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!12 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 (trunk 214102:214133) (llvm/trunk 214102:214132)", isOptimized: false, emissionKind: 1, file: !13, enums: !14, retainedTypes: !14, subprograms: !16, globals: !11, imports: !11)
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!13 = !DIFile(filename: "b.cpp", directory: "")
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!14 = !{!15}
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!15 = !DICompositeType(tag: DW_TAG_enumeration_type, name: "EA", line: 1, size: 32, align: 32, file: !13, elements: !4, identifier: "_ZTS2EA")
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!16 = !{!17}
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!17 = distinct !DISubprogram(name: "topB", linkageName: "_Z4topB2EA", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !13, scope: !18, type: !9, function: void (i32)* @_Z4topB2EA, variables: !11)
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!18 = !DIFile(filename: "b.cpp", directory: "")
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!19 = !{i32 2, !"Dwarf Version", i32 2}
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!20 = !{i32 2, !"Debug Info Version", i32 3}
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!21 = !{!"clang version 3.5.0 (trunk 214102:214133) (llvm/trunk 214102:214132)"}
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!22 = !DILocalVariable(name: "sa", line: 5, arg: 1, scope: !7, file: !8, type: !"_ZTS2EA")
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!23 = !DILocation(line: 5, column: 14, scope: !7)
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!24 = !DILocation(line: 6, column: 1, scope: !7)
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!25 = !DILocalVariable(name: "sa", line: 5, arg: 1, scope: !17, file: !18, type: !"_ZTS2EA")
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!26 = !DILocation(line: 5, column: 14, scope: !17)
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!27 = !DILocation(line: 6, column: 1, scope: !17)
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