mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-02-23 20:29:30 +00:00
309fcf84b8
This optimization allows the DWARF linker to reuse definition of types it has emitted in previous CUs rather than reemitting them in each CU that references them. The size and link time gains are huge. For example when linking the DWARF for a debug build of clang, this generates a ~150M dwarf file instead of a ~700M one (the numbers date back a bit and must not be totally accurate these days). As with all the other parts of the llvm-dsymutil codebase, the goal is to keep bit-for-bit compatibility with dsymutil-classic. The code is littered with a lot of FIXMEs that should be addressed once we can get rid of the compatibilty goal. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242847 91177308-0d34-0410-b5e6-96231b3b80d8
63 lines
3.9 KiB
LLVM
63 lines
3.9 KiB
LLVM
; Generated from odr7.cpp and odr-types.h by running:
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; clang -emit-llvm -g -S -std=c++11 odr7.cpp
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; ModuleID = 'odr7.cpp'
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.11.0"
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%"struct.S::Nested" = type { double }
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; Function Attrs: nounwind ssp uwtable
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define void @_Z3foov() #0 {
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entry:
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%N = alloca %"struct.S::Nested", align 8
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call void @llvm.dbg.declare(metadata %"struct.S::Nested"* %N, metadata !32, metadata !33), !dbg !34
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ret void, !dbg !35
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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 ssp uwtable "disable-tail-calls"="false" "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" "target-cpu"="core2" "target-features"="+cx16,+sse,+sse2,+sse3,+ssse3" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!28, !29, !30}
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!llvm.ident = !{!31}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.8.0 (trunk 242534)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !3, subprograms: !24)
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!1 = !DIFile(filename: "odr7.cpp", directory: "/Inputs")
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!2 = !{}
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!3 = !{!4, !20}
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!4 = !DICompositeType(tag: DW_TAG_structure_type, name: "S", file: !5, line: 1, size: 128, align: 64, elements: !6, identifier: "_ZTS1S")
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!5 = !DIFile(filename: "./odr-types.h", directory: "/Inputs")
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!6 = !{!7, !9, !10, !14, !17}
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!7 = !DIDerivedType(tag: DW_TAG_member, name: "I", scope: !"_ZTS1S", file: !5, line: 2, baseType: !8, size: 32, align: 32)
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!8 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!9 = !DIDerivedType(tag: DW_TAG_member, name: "D", scope: !"_ZTS1S", file: !5, line: 15, baseType: !"_ZTSN1S6NestedE", size: 64, align: 64, offset: 64)
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!10 = !DISubprogram(name: "incr", linkageName: "_ZN1S4incrEv", scope: !"_ZTS1S", file: !5, line: 4, type: !11, isLocal: false, isDefinition: false, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: false)
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!11 = !DISubroutineType(types: !12)
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!12 = !{null, !13}
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!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !"_ZTS1S", size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer)
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!14 = !DISubprogram(name: "incr", linkageName: "_ZN1S4incrEi", scope: !"_ZTS1S", file: !5, line: 5, type: !15, isLocal: false, isDefinition: false, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: false)
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!15 = !DISubroutineType(types: !16)
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!16 = !{null, !13, !8}
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!17 = !DISubprogram(name: "foo", linkageName: "_ZN1S3fooEv", scope: !"_ZTS1S", file: !5, line: 18, type: !18, isLocal: false, isDefinition: false, scopeLine: 18, flags: DIFlagPrototyped, isOptimized: false)
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!18 = !DISubroutineType(types: !19)
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!19 = !{!8, !13}
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!20 = !DICompositeType(tag: DW_TAG_structure_type, name: "Nested", scope: !"_ZTS1S", file: !5, line: 9, size: 64, align: 64, elements: !21, identifier: "_ZTSN1S6NestedE")
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!21 = !{!22}
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!22 = !DIDerivedType(tag: DW_TAG_member, name: "D", scope: !"_ZTSN1S6NestedE", file: !5, line: 10, baseType: !23, size: 64, align: 64)
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!23 = !DIBasicType(name: "double", size: 64, align: 64, encoding: DW_ATE_float)
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!24 = !{!25}
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!25 = !DISubprogram(name: "foo", linkageName: "_Z3foov", scope: !1, file: !1, line: 3, type: !26, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, function: void ()* @_Z3foov, variables: !2)
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!26 = !DISubroutineType(types: !27)
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!27 = !{null}
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!28 = !{i32 2, !"Dwarf Version", i32 2}
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!29 = !{i32 2, !"Debug Info Version", i32 3}
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!30 = !{i32 1, !"PIC Level", i32 2}
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!31 = !{!"clang version 3.8.0 (trunk 242534)"}
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!32 = !DILocalVariable(tag: DW_TAG_auto_variable, name: "N", scope: !25, file: !1, line: 4, type: !"_ZTSN1S6NestedE")
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!33 = !DIExpression()
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!34 = !DILocation(line: 4, column: 12, scope: !25)
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!35 = !DILocation(line: 5, column: 1, scope: !25)
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