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96888349a9
Summary: This adds a visitLocationList function to the DWARF v4 location lists, similar to what already exists for DWARF v5. It follows the approach outlined in previous patches (D69672), where the parsed form is always stored in the DWARF v5 format, which makes it easier for generic code to be built on top of that. v4 location lists are "upgraded" during parsing, and then this upgrade is undone while dumping. Both "inline" and section-based dumping is rewritten to reuse the existing "generic" location list dumper. This means that the output format is consistent for all location lists (the only thing one needs to implement is the function which prints the "raw" form of a location list), and that debug_loc dumping correctly processes base address selection entries, etc. The previous existing debug_loc functionality (e.g., parseOneLocationList) is rewritten on top of the new API, but it is not removed as there is still code which uses them. This will be done in follow-up patches, after I build the API to access the "interpreted" location lists in a generic way (as that is what those users really want). Reviewers: dblaikie, probinson, JDevlieghere, aprantl, SouraVX Subscribers: hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D69847
63 lines
2.9 KiB
LLVM
63 lines
2.9 KiB
LLVM
; RUN: llc < %s - -filetype=obj | llvm-dwarfdump -debug-loc - | FileCheck %s
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; Radar 9376013
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target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:32-f32:32:32-f64:32:32-v64:32:64-v128:32:128-a0:0:32-n32"
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target triple = "thumbv7-apple-macosx10.6.7"
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; Just making sure the first part of the location isn't a repetition
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; of the size of the location description.
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; CHECK: 0x00000000:
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; CHECK-NEXT: (0x{{[0-9]*[a-f]*}}, 0x{{[0-9]*[a-f]*}}): DW_OP_regx D8
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define void @_Z3foov() optsize ssp !dbg !1 {
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entry:
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%call = tail call float @_Z3barv() optsize, !dbg !11
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tail call void @llvm.dbg.value(metadata float %call, metadata !5, metadata !DIExpression()), !dbg !11
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%call16 = tail call float @_Z2f2v() optsize, !dbg !12
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%cmp7 = fcmp olt float %call, %call16, !dbg !12
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br i1 %cmp7, label %for.body, label %for.end, !dbg !12
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for.body: ; preds = %entry, %for.body
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%k.08 = phi float [ %inc, %for.body ], [ %call, %entry ]
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%call4 = tail call float @_Z2f3f(float %k.08) optsize, !dbg !13
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%inc = fadd float %k.08, 1.000000e+00, !dbg !14
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%call1 = tail call float @_Z2f2v() optsize, !dbg !12
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%cmp = fcmp olt float %inc, %call1, !dbg !12
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br i1 %cmp, label %for.body, label %for.end, !dbg !12
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for.end: ; preds = %for.body, %entry
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ret void, !dbg !15
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}
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declare float @_Z3barv() optsize
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declare float @_Z2f2v() optsize
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declare float @_Z2f3f(float) optsize
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declare void @llvm.dbg.value(metadata, metadata, metadata) nounwind readnone
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!20}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.0 (trunk 130845)", isOptimized: true, emissionKind: FullDebug, file: !18, enums: !19, retainedTypes: !19, imports: null)
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!1 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foov", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 5, file: !18, scope: !2, type: !3, retainedNodes: !17)
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!2 = !DIFile(filename: "k.cc", directory: "/private/tmp")
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!3 = !DISubroutineType(types: !4)
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!4 = !{null}
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!5 = !DILocalVariable(name: "k", line: 6, scope: !6, file: !2, type: !7)
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!6 = distinct !DILexicalBlock(line: 5, column: 12, file: !18, scope: !1)
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!7 = !DIBasicType(tag: DW_TAG_base_type, name: "float", size: 32, align: 32, encoding: DW_ATE_float)
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!8 = !DILocalVariable(name: "y", line: 8, scope: !9, file: !2, type: !7)
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!9 = distinct !DILexicalBlock(line: 7, column: 25, file: !18, scope: !10)
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!10 = distinct !DILexicalBlock(line: 7, column: 3, file: !18, scope: !6)
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!11 = !DILocation(line: 6, column: 18, scope: !6)
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!12 = !DILocation(line: 7, column: 3, scope: !6)
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!13 = !DILocation(line: 8, column: 20, scope: !9)
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!14 = !DILocation(line: 7, column: 20, scope: !10)
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!15 = !DILocation(line: 10, column: 1, scope: !6)
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!17 = !{!5, !8}
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!18 = !DIFile(filename: "k.cc", directory: "/private/tmp")
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!19 = !{}
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!20 = !{i32 1, !"Debug Info Version", i32 3}
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