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https://github.com/RPCS3/llvm-mirror.git
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5b721561aa
Previously, subprograms contained a metadata reference to the function they described. Because most clients need to get or set a subprogram for a given function rather than the other way around, this created unneeded inefficiency. For example, many passes needed to call the function llvm::makeSubprogramMap() to build a mapping from functions to subprograms, and the IR linker needed to fix up function references in a way that caused quadratic complexity in the IR linking phase of LTO. This change reverses the direction of the edge by storing the subprogram as function-level metadata and removing DISubprogram's function field. Since this is an IR change, a bitcode upgrade has been provided. Fixes PR23367. An upgrade script for textual IR for out-of-tree clients is attached to the PR. Differential Revision: http://reviews.llvm.org/D14265 llvm-svn: 252219
167 lines
10 KiB
LLVM
167 lines
10 KiB
LLVM
; RUN: llc -mtriple=x86_64-apple-macosx10.7 %s -o %t -filetype=obj
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; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck %s
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; CHECK: b_ref
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; CHECK-NOT: AT_bit_size
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%struct.bar = type { %struct.baz, %struct.baz* }
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%struct.baz = type { i32 }
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define i32 @main(i32 %argc, i8** %argv) uwtable ssp !dbg !29 {
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entry:
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%retval = alloca i32, align 4
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%argc.addr = alloca i32, align 4
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%argv.addr = alloca i8**, align 8
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%myBar = alloca %struct.bar, align 8
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store i32 0, i32* %retval
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store i32 %argc, i32* %argc.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %argc.addr, metadata !49, metadata !DIExpression()), !dbg !50
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store i8** %argv, i8*** %argv.addr, align 8
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call void @llvm.dbg.declare(metadata i8*** %argv.addr, metadata !51, metadata !DIExpression()), !dbg !52
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call void @llvm.dbg.declare(metadata %struct.bar* %myBar, metadata !53, metadata !DIExpression()), !dbg !55
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call void @_ZN3barC1Ei(%struct.bar* %myBar, i32 1), !dbg !56
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ret i32 0, !dbg !57
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
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define linkonce_odr void @_ZN3barC1Ei(%struct.bar* %this, i32 %x) unnamed_addr uwtable ssp align 2 !dbg !37 {
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entry:
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%this.addr = alloca %struct.bar*, align 8
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%x.addr = alloca i32, align 4
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store %struct.bar* %this, %struct.bar** %this.addr, align 8
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call void @llvm.dbg.declare(metadata %struct.bar** %this.addr, metadata !58, metadata !DIExpression()), !dbg !59
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store i32 %x, i32* %x.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !60, metadata !DIExpression()), !dbg !61
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%this1 = load %struct.bar*, %struct.bar** %this.addr
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%0 = load i32, i32* %x.addr, align 4, !dbg !62
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call void @_ZN3barC2Ei(%struct.bar* %this1, i32 %0), !dbg !62
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ret void, !dbg !62
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}
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define linkonce_odr void @_ZN3barC2Ei(%struct.bar* %this, i32 %x) unnamed_addr uwtable ssp align 2 !dbg !40 {
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entry:
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%this.addr = alloca %struct.bar*, align 8
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%x.addr = alloca i32, align 4
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store %struct.bar* %this, %struct.bar** %this.addr, align 8
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call void @llvm.dbg.declare(metadata %struct.bar** %this.addr, metadata !63, metadata !DIExpression()), !dbg !64
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store i32 %x, i32* %x.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %x.addr, metadata !65, metadata !DIExpression()), !dbg !66
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%this1 = load %struct.bar*, %struct.bar** %this.addr
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%b = getelementptr inbounds %struct.bar, %struct.bar* %this1, i32 0, i32 0, !dbg !67
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%0 = load i32, i32* %x.addr, align 4, !dbg !67
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call void @_ZN3bazC1Ei(%struct.baz* %b, i32 %0), !dbg !67
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%1 = getelementptr inbounds %struct.bar, %struct.bar* %this1, i32 0, i32 1, !dbg !67
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%b2 = getelementptr inbounds %struct.bar, %struct.bar* %this1, i32 0, i32 0, !dbg !67
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store %struct.baz* %b2, %struct.baz** %1, align 8, !dbg !67
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ret void, !dbg !68
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}
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define linkonce_odr void @_ZN3bazC1Ei(%struct.baz* %this, i32 %a) unnamed_addr uwtable ssp align 2 !dbg !43 {
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entry:
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%this.addr = alloca %struct.baz*, align 8
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%a.addr = alloca i32, align 4
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store %struct.baz* %this, %struct.baz** %this.addr, align 8
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call void @llvm.dbg.declare(metadata %struct.baz** %this.addr, metadata !70, metadata !DIExpression()), !dbg !71
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store i32 %a, i32* %a.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !72, metadata !DIExpression()), !dbg !73
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%this1 = load %struct.baz*, %struct.baz** %this.addr
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%0 = load i32, i32* %a.addr, align 4, !dbg !74
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call void @_ZN3bazC2Ei(%struct.baz* %this1, i32 %0), !dbg !74
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ret void, !dbg !74
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}
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define linkonce_odr void @_ZN3bazC2Ei(%struct.baz* %this, i32 %a) unnamed_addr nounwind uwtable ssp align 2 !dbg !46 {
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entry:
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%this.addr = alloca %struct.baz*, align 8
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%a.addr = alloca i32, align 4
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store %struct.baz* %this, %struct.baz** %this.addr, align 8
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call void @llvm.dbg.declare(metadata %struct.baz** %this.addr, metadata !75, metadata !DIExpression()), !dbg !76
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store i32 %a, i32* %a.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !77, metadata !DIExpression()), !dbg !78
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%this1 = load %struct.baz*, %struct.baz** %this.addr
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%h = getelementptr inbounds %struct.baz, %struct.baz* %this1, i32 0, i32 0, !dbg !79
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%0 = load i32, i32* %a.addr, align 4, !dbg !79
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store i32 %0, i32* %h, align 4, !dbg !79
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ret void, !dbg !80
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!83}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.1 (trunk 146596)", isOptimized: false, emissionKind: 0, file: !82, enums: !1, retainedTypes: !3, subprograms: !27, globals: !1, imports: !1)
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!1 = !{}
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!3 = !{!5, !9}
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!5 = !DICompositeType(tag: DW_TAG_class_type, name: "bar", line: 9, size: 128, align: 64, file: !82, elements: !7)
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!6 = !DIFile(filename: "main.cpp", directory: "/Users/echristo/tmp/bad-struct-ref")
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!7 = !{!8, !19, !21}
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!8 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 11, size: 32, align: 32, file: !82, scope: !5, baseType: !9)
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!9 = !DICompositeType(tag: DW_TAG_class_type, name: "baz", line: 3, size: 32, align: 32, file: !82, elements: !10)
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!10 = !{!11, !13}
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!11 = !DIDerivedType(tag: DW_TAG_member, name: "h", line: 5, size: 32, align: 32, file: !82, scope: !9, baseType: !12)
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!12 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!13 = !DISubprogram(name: "baz", line: 6, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !82, scope: !9, type: !14)
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!14 = !DISubroutineType(types: !15)
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!15 = !{null, !16, !12}
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!16 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !9)
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!19 = !DIDerivedType(tag: DW_TAG_member, name: "b_ref", line: 12, size: 64, align: 64, offset: 64, file: !82, scope: !5, baseType: !20)
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!20 = !DIDerivedType(tag: DW_TAG_reference_type, baseType: !9)
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!21 = !DISubprogram(name: "bar", line: 13, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !82, scope: !5, type: !22)
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!22 = !DISubroutineType(types: !23)
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!23 = !{null, !24, !12}
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!24 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial, baseType: !5)
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!27 = !{!29, !37, !40, !43, !46}
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!29 = distinct !DISubprogram(name: "main", line: 17, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !82, scope: !6, type: !30)
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!30 = !DISubroutineType(types: !31)
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!31 = !{!12, !12, !32}
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!32 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !33)
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!33 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !34)
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!34 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char)
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!35 = !{!36}
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!36 = !{} ; previously: invalid DW_TAG_base_type
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!37 = distinct !DISubprogram(name: "bar", linkageName: "_ZN3barC1Ei", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !82, scope: null, type: !22, declaration: !21)
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!38 = !{!39}
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!39 = !{} ; previously: invalid DW_TAG_base_type
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!40 = distinct !DISubprogram(name: "bar", linkageName: "_ZN3barC2Ei", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !82, scope: null, type: !22, declaration: !21)
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!41 = !{!42}
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!42 = !{} ; previously: invalid DW_TAG_base_type
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!43 = distinct !DISubprogram(name: "baz", linkageName: "_ZN3bazC1Ei", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !82, scope: null, type: !14, declaration: !13)
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!44 = !{!45}
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!45 = !{} ; previously: invalid DW_TAG_base_type
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!46 = distinct !DISubprogram(name: "baz", linkageName: "_ZN3bazC2Ei", line: 6, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, file: !82, scope: null, type: !14, declaration: !13)
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!49 = !DILocalVariable(name: "argc", line: 16, arg: 1, scope: !29, file: !6, type: !12)
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!50 = !DILocation(line: 16, column: 14, scope: !29)
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!51 = !DILocalVariable(name: "argv", line: 16, arg: 2, scope: !29, file: !6, type: !32)
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!52 = !DILocation(line: 16, column: 27, scope: !29)
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!53 = !DILocalVariable(name: "myBar", line: 18, scope: !54, file: !6, type: !5)
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!54 = distinct !DILexicalBlock(line: 17, column: 1, file: !82, scope: !29)
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!55 = !DILocation(line: 18, column: 9, scope: !54)
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!56 = !DILocation(line: 18, column: 17, scope: !54)
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!57 = !DILocation(line: 19, column: 5, scope: !54)
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!58 = !DILocalVariable(name: "this", line: 13, arg: 1, flags: DIFlagArtificial, scope: !37, file: !6, type: !24)
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!59 = !DILocation(line: 13, column: 5, scope: !37)
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!60 = !DILocalVariable(name: "x", line: 13, arg: 2, scope: !37, file: !6, type: !12)
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!61 = !DILocation(line: 13, column: 13, scope: !37)
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!62 = !DILocation(line: 13, column: 34, scope: !37)
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!63 = !DILocalVariable(name: "this", line: 13, arg: 1, flags: DIFlagArtificial, scope: !40, file: !6, type: !24)
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!64 = !DILocation(line: 13, column: 5, scope: !40)
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!65 = !DILocalVariable(name: "x", line: 13, arg: 2, scope: !40, file: !6, type: !12)
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!66 = !DILocation(line: 13, column: 13, scope: !40)
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!67 = !DILocation(line: 13, column: 33, scope: !40)
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!68 = !DILocation(line: 13, column: 34, scope: !69)
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!69 = distinct !DILexicalBlock(line: 13, column: 33, file: !82, scope: !40)
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!70 = !DILocalVariable(name: "this", line: 6, arg: 1, flags: DIFlagArtificial, scope: !43, file: !6, type: !16)
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!71 = !DILocation(line: 6, column: 5, scope: !43)
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!72 = !DILocalVariable(name: "a", line: 6, arg: 2, scope: !43, file: !6, type: !12)
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!73 = !DILocation(line: 6, column: 13, scope: !43)
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!74 = !DILocation(line: 6, column: 24, scope: !43)
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!75 = !DILocalVariable(name: "this", line: 6, arg: 1, flags: DIFlagArtificial, scope: !46, file: !6, type: !16)
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!76 = !DILocation(line: 6, column: 5, scope: !46)
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!77 = !DILocalVariable(name: "a", line: 6, arg: 2, scope: !46, file: !6, type: !12)
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!78 = !DILocation(line: 6, column: 13, scope: !46)
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!79 = !DILocation(line: 6, column: 23, scope: !46)
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!80 = !DILocation(line: 6, column: 24, scope: !81)
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!81 = distinct !DILexicalBlock(line: 6, column: 23, file: !82, scope: !46)
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!82 = !DIFile(filename: "main.cpp", directory: "/Users/echristo/tmp/bad-struct-ref")
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!83 = !{i32 1, !"Debug Info Version", i32 3}
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