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54 lines
2.5 KiB
LLVM
54 lines
2.5 KiB
LLVM
; RUN: llc -mtriple=x86_64-linux-gnu %s -filetype=obj -o %t
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; RUN: llvm-dwarfdump %t | FileCheck %s
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; Reconstruct this via clang and -O2.
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; static void foo() {
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; struct X { int a; int b; } xyz;
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; }
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; int bar() {
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; foo();
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; return 1;
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; }
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; Check that we don't have the structure type for X since its scope has
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; been optimized away.
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; CHECK-NOT: DW_TAG_structure_type
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; CHECK: DW_TAG_subprogram
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; CHECK: DW_AT_name {{.*}}"bar"
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; CHECK-NOT: DW_TAG_structure_type
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; Function Attrs: nounwind readnone uwtable
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define i32 @bar() #0 !dbg !4 {
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entry:
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ret i32 1, !dbg !21
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}
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attributes #0 = { nounwind readnone uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "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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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!18, !19}
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!llvm.ident = !{!20}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (trunk 209255) (llvm/trunk 209253)", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "debug-dead-local-var.c", directory: "/usr/local/google/home/echristo")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "bar", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !0, scopeLine: 11, file: !1, scope: !5, type: !6, variables: !2)
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!5 = !DIFile(filename: "debug-dead-local-var.c", directory: "/usr/local/google/home/echristo")
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!6 = !DISubroutineType(types: !7)
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!7 = !{!8}
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!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = distinct !DISubprogram(name: "foo", line: 6, isLocal: true, isDefinition: true, virtualIndex: 6, isOptimized: true, unit: !0, scopeLine: 6, file: !1, scope: !5, type: !10, variables: !12)
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!10 = !DISubroutineType(types: !11)
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!11 = !{null}
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!12 = !{!13}
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!13 = !DILocalVariable(name: "xyz", line: 8, scope: !9, file: !5, type: !14)
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!14 = !DICompositeType(tag: DW_TAG_structure_type, name: "X", line: 8, size: 64, align: 32, file: !1, scope: !9, elements: !15)
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!15 = !{!16, !17}
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!16 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 8, size: 32, align: 32, file: !1, scope: !14, baseType: !8)
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!17 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 8, size: 32, align: 32, offset: 32, file: !1, scope: !14, baseType: !8)
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!18 = !{i32 2, !"Dwarf Version", i32 4}
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!19 = !{i32 2, !"Debug Info Version", i32 3}
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!20 = !{!"clang version 3.5.0 (trunk 209255) (llvm/trunk 209253)"}
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!21 = !DILocation(line: 13, scope: !4)
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