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28e9fd46e3
When we suppress linkage names, for a non-inlined subprogram the name can still be found in the object-file symbol table, because we have the code address of the subprogram. This is not necessarily the case for an inlined subprogram, so we still want to emit the linkage name in the DWARF. Put this on the abstract-origin DIE because it's common to all inlined instances. Differential Revision: http://reviews.llvm.org/D18706 llvm-svn: 266692
95 lines
4.1 KiB
LLVM
95 lines
4.1 KiB
LLVM
; REQUIRES: object-emission
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; RUN: %llc_dwarf -O0 -filetype=obj -dwarf-linkage-names=All < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s
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; Generate from clang with the following source. Note that the definition of
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; the inline function follows its use to workaround another bug that should be
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; fixed soon.
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; namespace ns {
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; int func(int i);
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; }
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; extern int x;
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; int main() { return ns::func(x); }
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; int __attribute__((always_inline)) ns::func(int i) { return i * 2; }
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; CHECK: DW_TAG_namespace
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; CHECK-NEXT: DW_AT_name {{.*}} "ns"
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; CHECK-NOT: DW_TAG
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; CHECK: DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_linkage_name {{.*}} "_ZN2ns4funcEi"
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; CHECK-NOT: DW_TAG
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; CHECK: DW_TAG_formal_parameter
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; CHECK: NULL
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; CHECK-NOT: NULL
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; CHECK: DW_TAG_subprogram
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_abstract_origin {{.*}} "_ZN2ns4funcEi"
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; CHECK-NOT: DW_TAG
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; CHECK: DW_TAG_formal_parameter
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; CHECK: DW_AT_abstract_origin {{.*}} "i"
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; CHECK: NULL
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; CHECK: NULL
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; CHECK: NULL
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@x = external global i32
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; Function Attrs: uwtable
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define i32 @main() #0 !dbg !4 {
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entry:
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%i.addr.i = alloca i32, align 4
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%retval = alloca i32, align 4
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store i32 0, i32* %retval
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%0 = load i32, i32* @x, align 4, !dbg !16
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store i32 %0, i32* %i.addr.i, align 4
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call void @llvm.dbg.declare(metadata i32* %i.addr.i, metadata !117, metadata !DIExpression()), !dbg !18
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%1 = load i32, i32* %i.addr.i, align 4, !dbg !18
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%mul.i = mul nsw i32 %1, 2, !dbg !18
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ret i32 %mul.i, !dbg !16
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}
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; Function Attrs: alwaysinline nounwind uwtable
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define i32 @_ZN2ns4funcEi(i32 %i) #1 !dbg !9 {
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entry:
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%i.addr = alloca i32, align 4
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store i32 %i, i32* %i.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %i.addr, metadata !17, metadata !DIExpression()), !dbg !19
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%0 = load i32, i32* %i.addr, align 4, !dbg !19
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%mul = mul nsw i32 %0, 2, !dbg !19
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ret i32 %mul, !dbg !19
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #2
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attributes #0 = { 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 = { alwaysinline nounwind 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 #2 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!13, !14}
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!llvm.ident = !{!15}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "namespace_inline_function_definition.cpp", directory: "/tmp/dbginfo")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "main", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 5, file: !1, scope: !5, type: !6, variables: !2)
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!5 = !DIFile(filename: "namespace_inline_function_definition.cpp", directory: "/tmp/dbginfo")
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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: "func", linkageName: "_ZN2ns4funcEi", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 6, file: !1, scope: !10, type: !11, variables: !2)
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!10 = !DINamespace(name: "ns", line: 1, file: !1, scope: null)
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!11 = !DISubroutineType(types: !12)
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!12 = !{!8, !8}
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!13 = !{i32 2, !"Dwarf Version", i32 4}
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!14 = !{i32 2, !"Debug Info Version", i32 3}
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!15 = !{!"clang version 3.5.0 "}
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!16 = !DILocation(line: 5, scope: !4)
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!17 = !DILocalVariable(name: "i", line: 6, arg: 1, scope: !9, file: !5, type: !8)
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!117 = !DILocalVariable(name: "i", line: 6, arg: 1, scope: !9, file: !5, type: !8)
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!18 = !DILocation(line: 6, scope: !9, inlinedAt: !16)
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!19 = !DILocation(line: 6, scope: !9)
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