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bbf32bd275
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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244678 91177308-0d34-0410-b5e6-96231b3b80d8
102 lines
3.9 KiB
LLVM
102 lines
3.9 KiB
LLVM
; REQUIRES: object-emission, native
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;
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; RUN: llvm-link %s %p/type-unique-odr-b.ll -S -o - | %llc_dwarf -dwarf-linkage-names=Enable -filetype=obj -O0 | llvm-dwarfdump -debug-dump=info - | FileCheck %s
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;
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; Test ODR-based type uniquing for C++ class members.
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; rdar://problem/15851313.
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;
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; $ cat -n type-unique-odr-a.cpp
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; 1 class A {
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; 2 int data;
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; 3 protected:
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; 4 void getFoo();
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; 5 };
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; 6
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; 7 static void bar() {
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; 8 A a;
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; 9 }
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; 10
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; 11 void baz() { bar(); }
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;; #include "ab.h"
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; foo_t bar() {
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; return A().getFoo();
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; }
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;
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; CHECK: DW_TAG_class_type
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; CHECK-NEXT: DW_AT_name {{.*}} "A"
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; CHECK-NOT: DW_TAG
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; CHECK: DW_TAG_member
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; CHECK-NEXT: DW_AT_name {{.*}} "data"
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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 {{.*}} "_ZN1A6getFooEv"
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; CHECK-NOT: DW_TAG
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; CHECK: DW_AT_name {{.*}} "getFoo"
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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 {{.*}} "_Z3bazv"
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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 {{.*}} "_ZL3barv"
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; getFoo and A may only appear once.
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; CHECK-NOT: AT_name{{.*(getFoo)|("A")}}
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; ModuleID = 'type-unique-odr-a.cpp'
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%class.A = type { i32 }
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; Function Attrs: nounwind
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define void @_Z3bazv() #0 {
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entry:
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call void @_ZL3barv(), !dbg !23
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ret void, !dbg !23
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}
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; Function Attrs: nounwind
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define internal void @_ZL3barv() #0 {
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entry:
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%a = alloca %class.A, align 4
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call void @llvm.dbg.declare(metadata %class.A* %a, metadata !24, metadata !DIExpression()), !dbg !25
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ret void, !dbg !26
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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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attributes #0 = { nounwind }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!20, !21}
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!llvm.ident = !{!22}
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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: !3, subprograms: !14, globals: !2, imports: !2)
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!1 = !DIFile(filename: "<unknown>", directory: "")
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!2 = !{}
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!3 = !{!4}
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!4 = !DICompositeType(tag: DW_TAG_class_type, name: "A", line: 1, size: 32, align: 32, file: !5, elements: !6, identifier: "_ZTS1A")
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!5 = !DIFile(filename: "type-unique-odr-a.cpp", directory: "")
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!6 = !{!7, !9}
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!7 = !DIDerivedType(tag: DW_TAG_member, name: "data", line: 2, size: 32, align: 32, flags: DIFlagPrivate, file: !5, scope: !"_ZTS1A", baseType: !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: "getFoo", linkageName: "_ZN1A6getFooEv", line: 4, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagProtected | DIFlagPrototyped, isOptimized: false, scopeLine: 4, file: !5, scope: !"_ZTS1A", type: !10)
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!10 = !DISubroutineType(types: !11)
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!11 = !{null, !12}
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!12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1A")
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!14 = !{!15, !19}
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!15 = !DISubprogram(name: "baz", linkageName: "_Z3bazv", line: 11, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 11, file: !5, scope: !16, type: !17, function: void ()* @_Z3bazv, variables: !2)
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!16 = !DIFile(filename: "type-unique-odr-a.cpp", directory: "")
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!17 = !DISubroutineType(types: !18)
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!18 = !{null}
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!19 = !DISubprogram(name: "bar", linkageName: "_ZL3barv", line: 7, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 7, file: !5, scope: !16, type: !17, function: void ()* @_ZL3barv, variables: !2)
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!20 = !{i32 2, !"Dwarf Version", i32 4}
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!21 = !{i32 1, !"Debug Info Version", i32 3}
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!22 = !{!"clang version 3.5.0 "}
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!23 = !DILocation(line: 11, scope: !15)
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!24 = !DILocalVariable(name: "a", line: 8, scope: !19, file: !16, type: !"_ZTS1A")
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!25 = !DILocation(line: 8, scope: !19)
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!26 = !DILocation(line: 9, scope: !19)
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