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Since Split DWARF needs to name the actual .dwo file that is generated, it can't be known at the time the llvm::Module is produced as it may be merged with other Modules before the object is generated and that object may be generated with any name. By passing the Split DWARF file name when LLVM is producing object code the .dwo file name in the object file can match correctly. The support for Split DWARF for implicit modules remains the same - using metadata to store the dwo name and dwo id so that potentially multiple skeleton CUs referring to different dwo files can be generated from one llvm::Module. llvm-svn: 301062
38 lines
1.7 KiB
LLVM
38 lines
1.7 KiB
LLVM
; RUN: llc -mtriple=x86_64-pc-linux-gnu -split-dwarf-file=foo.dwo %s -o - | FileCheck %s
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; Derived from:
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; int main (void) {
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; return 0;
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; }
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; Check that we get a symbol off of the debug_info section when using split dwarf and pubnames.
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; CHECK: .LpubTypes_begin0:
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; CHECK-NEXT: .short 2 # DWARF Version
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; CHECK-NEXT: .long .Lcu_begin0 # Offset of Compilation Unit Info
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; Function Attrs: nounwind uwtable
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define i32 @main() #0 !dbg !4 {
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entry:
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%retval = alloca i32, align 4
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store i32 0, i32* %retval
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ret i32 0, !dbg !10
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}
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attributes #0 = { 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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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!9, !11}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.4 (trunk 189287) (llvm/trunk 189296)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "foo.c", directory: "/usr/local/google/home/echristo/tmp")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "main", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2)
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!5 = !DIFile(filename: "foo.c", directory: "/usr/local/google/home/echristo/tmp")
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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 = !{i32 2, !"Dwarf Version", i32 3}
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!10 = !DILocation(line: 2, scope: !4)
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!11 = !{i32 1, !"Debug Info Version", i32 3}
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