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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
2.2 KiB
LLVM
40 lines
2.2 KiB
LLVM
; RUN: llc < %s -break-anti-dependencies=all -march=ppc64 -mcpu=g5 | FileCheck %s
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; CHECK-LABEL: main:
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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-v128:128:128-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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define i32 @main(i32 %argc, i8** nocapture %argv) nounwind readnone {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %argc, i64 0, metadata !15, metadata !DIExpression()), !dbg !17
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tail call void @llvm.dbg.value(metadata i8** %argv, i64 0, metadata !16, metadata !DIExpression()), !dbg !18
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%add = add nsw i32 %argc, 1, !dbg !19
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ret i32 %add, !dbg !19
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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 = !{!22}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.1", isOptimized: true, emissionKind: 0, file: !21, enums: !1, retainedTypes: !1, subprograms: !3, globals: !1, imports: !1)
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!1 = !{}
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!3 = !{!5}
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!5 = distinct !DISubprogram(name: "main", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, file: !21, scope: null, type: !7, function: i32 (i32, i8**)* @main, variables: !13)
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!6 = !DIFile(filename: "dbg.c", directory: "/src")
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!7 = !DISubroutineType(types: !8)
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!8 = !{!9, !9, !10}
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!9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!10 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !11)
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!11 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !12)
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!12 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_unsigned_char)
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!13 = !{!15, !16}
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!15 = !DILocalVariable(name: "argc", line: 1, arg: 1, scope: !5, file: !6, type: !9)
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!16 = !DILocalVariable(name: "argv", line: 1, arg: 2, scope: !5, file: !6, type: !10)
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!17 = !DILocation(line: 1, column: 14, scope: !5)
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!18 = !DILocation(line: 1, column: 26, scope: !5)
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!19 = !DILocation(line: 2, column: 3, scope: !20)
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!20 = distinct !DILexicalBlock(line: 1, column: 34, file: !21, scope: !5)
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!21 = !DIFile(filename: "dbg.c", directory: "/src")
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!22 = !{i32 1, !"Debug Info Version", i32 3}
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