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https://github.com/RPCS3/llvm-mirror.git
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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
101 lines
4.6 KiB
LLVM
101 lines
4.6 KiB
LLVM
; RUN: llc -filetype=obj -o - < %s | llvm-dwarfdump - --debug-loc | FileCheck %s
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;
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; Created using clang -g -O3 from:
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; struct S0 {
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; short f0;
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; int f3;
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; } a;
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; void fn1(short p1) {
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; struct S0 b, c = {3};
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; b.f3 = p1;
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; a = b = c;
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; }
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;
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; int main() { return 0; }
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;
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; This is similar to the bug in test/DebugInfo/ARM/PR26163.ll, except that there is an
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; extra non-overlapping range first. Thus, we make sure that the backend actually looks
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; at all expressions when determining whether to merge ranges, not just the first one.
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; AS in 26163, we only expect one range as the first one is zero sized.
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;
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;
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; CHECK: (0x0000000000000000, 0x000000000000000f): DW_OP_lit3, DW_OP_piece 0x4, DW_OP_lit0, DW_OP_piece 0x4
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source_filename = "test/DebugInfo/X86/PR26148.ll"
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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.S0 = type { i16, i32 }
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@a = common global %struct.S0 zeroinitializer, align 4, !dbg !0
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #0
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, metadata, metadata) #0
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define void @fn1(i16 signext %p1) !dbg !16 {
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entry:
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tail call void @llvm.dbg.value(metadata i16 %p1, metadata !20, metadata !23), !dbg !24
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tail call void @llvm.dbg.declare(metadata %struct.S0* undef, metadata !21, metadata !23), !dbg !25
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tail call void @llvm.dbg.declare(metadata %struct.S0* undef, metadata !22, metadata !23), !dbg !26
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tail call void @llvm.dbg.value(metadata i32 3, metadata !22, metadata !27), !dbg !26
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tail call void @llvm.dbg.value(metadata i32 0, metadata !22, metadata !28), !dbg !26
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tail call void @llvm.dbg.value(metadata i16 %p1, metadata !21, metadata !29), !dbg !25
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tail call void @llvm.dbg.value(metadata i32 3, metadata !21, metadata !27), !dbg !25
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tail call void @llvm.dbg.value(metadata i32 0, metadata !21, metadata !28), !dbg !25
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store i32 3, i32* bitcast (%struct.S0* @a to i32*), align 4, !dbg !30
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store i32 0, i32* getelementptr inbounds (%struct.S0, %struct.S0* @a, i64 0, i32 1), align 4, !dbg !30
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ret void, !dbg !31
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}
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define i32 @main() !dbg !32 {
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entry:
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ret i32 0, !dbg !35
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}
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attributes #0 = { nounwind readnone }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!12, !13, !14}
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!llvm.ident = !{!15}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 4, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 3.9.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "small.c", directory: "/Users/kfischer/Projects/clangbug")
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!4 = !{}
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!5 = !{!0}
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!6 = !DICompositeType(tag: DW_TAG_structure_type, name: "S0", file: !3, line: 1, size: 64, align: 32, elements: !7)
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!7 = !{!8, !10}
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!8 = !DIDerivedType(tag: DW_TAG_member, name: "f0", scope: !6, file: !3, line: 2, baseType: !9, size: 16, align: 16)
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!9 = !DIBasicType(name: "short", size: 16, align: 16, encoding: DW_ATE_signed)
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!10 = !DIDerivedType(tag: DW_TAG_member, name: "f3", scope: !6, file: !3, line: 3, baseType: !11, size: 32, align: 32, offset: 32)
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!11 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!12 = !{i32 2, !"Dwarf Version", i32 2}
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!13 = !{i32 2, !"Debug Info Version", i32 3}
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!14 = !{i32 1, !"PIC Level", i32 2}
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!15 = !{!"clang version 3.9.0"}
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!16 = distinct !DISubprogram(name: "fn1", scope: !3, file: !3, line: 5, type: !17, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !19)
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!17 = !DISubroutineType(types: !18)
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!18 = !{null, !9}
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!19 = !{!20, !21, !22}
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!20 = !DILocalVariable(name: "p1", arg: 1, scope: !16, file: !3, line: 5, type: !9)
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!21 = !DILocalVariable(name: "b", scope: !16, file: !3, line: 6, type: !6)
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!22 = !DILocalVariable(name: "c", scope: !16, file: !3, line: 6, type: !6)
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!23 = !DIExpression()
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!24 = !DILocation(line: 5, column: 16, scope: !16)
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!25 = !DILocation(line: 6, column: 13, scope: !16)
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!26 = !DILocation(line: 6, column: 16, scope: !16)
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!27 = !DIExpression(DW_OP_LLVM_fragment, 0, 32)
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!28 = !DIExpression(DW_OP_LLVM_fragment, 32, 32)
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!29 = !DIExpression(DW_OP_LLVM_fragment, 32, 16)
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!30 = !DILocation(line: 8, column: 9, scope: !16)
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!31 = !DILocation(line: 9, column: 1, scope: !16)
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!32 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 11, type: !33, isLocal: false, isDefinition: true, scopeLine: 11, isOptimized: true, unit: !2, retainedNodes: !4)
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!33 = !DISubroutineType(types: !34)
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!34 = !{!11}
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!35 = !DILocation(line: 11, column: 14, scope: !32)
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