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https://github.com/RPCS3/llvm.git
synced 2026-08-28 05:10:05 -04:00
David Blaikie
9c1b0af658
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301062 91177308-0d34-0410-b5e6-96231b3b80d8
75 lines
3.5 KiB
LLVM
75 lines
3.5 KiB
LLVM
; RUN: llc -split-dwarf-file=foo.dwo -O0 %s -function-sections -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
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; RUN: llvm-dwarfdump -debug-dump=abbrev %t | FileCheck --check-prefix=FUNCTION-SECTIONS %s
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; RUN: llvm-readobj --relocations %t | FileCheck --check-prefix=FUNCTION-SECTIONS-RELOCS %s
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; RUN: llc -split-dwarf-file=foo.dwo -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
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; RUN: llvm-dwarfdump -debug-dump=abbrev %t | FileCheck --check-prefix=NO-FUNCTION-SECTIONS %s
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; From:
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; int foo (int a) {
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; return a+1;
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; }
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; int bar (int b) {
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; return b+2;
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; }
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; With function sections enabled make sure that we have a DW_AT_ranges attribute.
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; FUNCTION-SECTIONS: DW_AT_ranges
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; Check that we have a relocation against the .debug_ranges section.
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; FUNCTION-SECTIONS-RELOCS: R_X86_64_32 .debug_ranges 0x0
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; Without function sections enabled make sure that we have no DW_AT_ranges attribute.
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; NO-FUNCTION-SECTIONS-NOT: DW_AT_ranges
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; NO-FUNCTION-SECTIONS: DW_AT_low_pc DW_FORM_addr
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; NO-FUNCTION-SECTIONS-NOT: DW_AT_ranges
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; Function Attrs: nounwind uwtable
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define i32 @foo(i32 %a) #0 !dbg !4 {
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entry:
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%a.addr = alloca i32, align 4
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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 !13, metadata !DIExpression()), !dbg !14
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%0 = load i32, i32* %a.addr, align 4, !dbg !14
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%add = add nsw i32 %0, 1, !dbg !14
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ret i32 %add, !dbg !14
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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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; Function Attrs: nounwind uwtable
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define i32 @bar(i32 %b) #0 !dbg !9 {
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entry:
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%b.addr = alloca i32, align 4
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store i32 %b, i32* %b.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %b.addr, metadata !15, metadata !DIExpression()), !dbg !16
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%0 = load i32, i32* %b.addr, align 4, !dbg !16
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%add = add nsw i32 %0, 2, !dbg !16
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ret i32 %add, !dbg !16
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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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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!10, !11}
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!llvm.ident = !{!12}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 (trunk 204164) (llvm/trunk 204183)", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "z.c", directory: "/usr/local/google/home/echristo")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "foo", 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: "z.c", directory: "/usr/local/google/home/echristo")
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!6 = !DISubroutineType(types: !7)
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!7 = !{!8, !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 = distinct !DISubprogram(name: "bar", line: 2, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 2, file: !1, scope: !5, type: !6, variables: !2)
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!10 = !{i32 2, !"Dwarf Version", i32 4}
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!11 = !{i32 1, !"Debug Info Version", i32 3}
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!12 = !{!"clang version 3.5.0 (trunk 204164) (llvm/trunk 204183)"}
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!13 = !DILocalVariable(name: "a", line: 1, arg: 1, scope: !4, file: !5, type: !8)
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!14 = !DILocation(line: 1, scope: !4)
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!15 = !DILocalVariable(name: "b", line: 2, arg: 1, scope: !9, file: !5, type: !8)
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!16 = !DILocation(line: 2, scope: !9)
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