78046b49a9
Mangled "linkage" names can be huge, and if the debugger (or other tools) have no use for them, the size savings can be very impressive (on the order of 40%). Add one test for controlling behavior, and modify a number of tests to either stop using linkage names, or make llc emit them (so these tests will still run when the default triple is for PS4). Differential Revision: http://reviews.llvm.org/D11374 llvm-svn: 244678
96 lines
4.1 KiB
LLVM
96 lines
4.1 KiB
LLVM
; REQUIRES: object-emission
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; RUN: %llc_dwarf -O0 -filetype=obj -dwarf-linkage-names=Enable < %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 {
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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 {
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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: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, 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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!3 = !{!4, !9}
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!4 = !DISubprogram(name: "main", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !5, type: !6, function: i32 ()* @main, 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 = !DISubprogram(name: "func", linkageName: "_ZN2ns4funcEi", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 6, file: !1, scope: !10, type: !11, function: i32 (i32)* @_ZN2ns4funcEi, 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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