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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
115 lines
5.3 KiB
LLVM
115 lines
5.3 KiB
LLVM
; RUN: llc %s -filetype=obj -o - | llvm-dwarfdump -debug-info -debug-loc - | FileCheck %s
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; Test that DW_OP_piece is emitted for constants.
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;
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; // Generated from:
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; typedef struct { int a, b; } I;
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; I i(int i) {
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; I r = {i, 0};
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; return r;
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; }
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;
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; typedef struct { float a, b; } F;
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; F f(float f) {
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; F r = {f, 0};
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; return r;
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; }
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; CHECK: .debug_info contents:
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; CHECK: DW_TAG_subprogram
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; CHECK: DW_AT_name ("i")
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; CHECK: DW_TAG_variable
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; CHECK-NEXT: DW_AT_location ([[I:0x[0-9a-f]+]]
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; CHECK-NEXT: [{{.*}}, {{.*}}): DW_OP_reg5 RDI, DW_OP_piece 0x4, DW_OP_lit0, DW_OP_stack_value, DW_OP_piece 0x4)
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; CHECK-NEXT: DW_AT_name ("r")
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;
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; CHECK: DW_TAG_subprogram
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; CHECK: DW_AT_name ("f")
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; CHECK: DW_TAG_variable
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; CHECK-NEXT: DW_AT_location ([[F:0x[0-9a-f]+]]
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; CHECK-NEXT: [{{.*}}, {{.*}}): DW_OP_reg17 XMM0, DW_OP_piece 0x4, DW_OP_lit0, DW_OP_stack_value, DW_OP_piece 0x4
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; CHECK-NEXT: [{{.*}}, {{.*}}): DW_OP_piece 0x4, DW_OP_lit0, DW_OP_stack_value, DW_OP_piece 0x4)
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; CHECK-NEXT: DW_AT_name ("r")
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;
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; CHECK: .debug_loc contents:
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; CHECK: [[I]]:
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; CHECK-NEXT: ({{.*}}, {{.*}}): DW_OP_reg5 RDI, DW_OP_piece 0x4, DW_OP_lit0, DW_OP_stack_value, DW_OP_piece 0x4
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; CHECK: [[F]]:
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; CHECK-NEXT: ({{.*}}, {{.*}}): DW_OP_reg17 XMM0, DW_OP_piece 0x4, DW_OP_lit0, DW_OP_stack_value, DW_OP_piece 0x4
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source_filename = "stack-value-piece.c"
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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-macosx10.12.0"
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%struct.I = type { i32, i32 }
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%struct.F = type { float, float }
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; Function Attrs: nounwind readnone ssp uwtable
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define i64 @i(i32 %i) local_unnamed_addr #0 !dbg !7 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 %i, metadata !18, metadata !22), !dbg !21
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tail call void @llvm.dbg.value(metadata i32 0, metadata !18, metadata !23), !dbg !21
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%retval.sroa.0.0.insert.ext = zext i32 %i to i64, !dbg !24
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ret i64 %retval.sroa.0.0.insert.ext, !dbg !24
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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 readnone ssp uwtable
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define <2 x float> @f(float %f) local_unnamed_addr #0 !dbg !25 {
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entry:
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tail call void @llvm.dbg.value(metadata float %f, metadata !36, metadata !22), !dbg !38
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tail call void @llvm.dbg.value(metadata float 0.000000e+00, metadata !36, metadata !23), !dbg !38
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%retval.sroa.0.0.vec.insert = insertelement <2 x float> undef, float %f, i32 0, !dbg !39
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%retval.sroa.0.4.vec.insert = insertelement <2 x float> %retval.sroa.0.0.vec.insert, float 0.000000e+00, i32 1, !dbg !39
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ret <2 x float> %retval.sroa.0.4.vec.insert, !dbg !40
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, metadata, metadata) #1
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attributes #0 = { nounwind readnone ssp uwtable }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 4.0.0 (trunk 285655) (llvm/trunk 285654)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "stack-value-piece.c", directory: "/")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"PIC Level", i32 2}
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!6 = !{!"clang version 4.0.0 (trunk 285655) (llvm/trunk 285654)"}
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!7 = distinct !DISubprogram(name: "i", scope: !1, file: !1, line: 2, type: !8, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !14}
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!10 = !DIDerivedType(tag: DW_TAG_typedef, name: "I", file: !1, line: 1, baseType: !11)
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!11 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !1, line: 1, size: 64, elements: !12)
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!12 = !{!13, !15}
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!13 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !11, file: !1, line: 1, baseType: !14, size: 32)
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!14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!15 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !11, file: !1, line: 1, baseType: !14, size: 32, offset: 32)
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!18 = !DILocalVariable(name: "r", scope: !7, file: !1, line: 3, type: !10)
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!19 = !DIExpression()
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!20 = !DILocation(line: 2, column: 9, scope: !7)
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!21 = !DILocation(line: 3, column: 5, scope: !7)
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!22 = !DIExpression(DW_OP_LLVM_fragment, 0, 32)
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!23 = !DIExpression(DW_OP_LLVM_fragment, 32, 32)
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!24 = !DILocation(line: 5, column: 1, scope: !7)
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!25 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 8, type: !26, isLocal: false, isDefinition: true, scopeLine: 8, flags: DIFlagPrototyped, isOptimized: true, unit: !0)
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!26 = !DISubroutineType(types: !27)
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!27 = !{!28, !32}
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!28 = !DIDerivedType(tag: DW_TAG_typedef, name: "F", file: !1, line: 7, baseType: !29)
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!29 = distinct !DICompositeType(tag: DW_TAG_structure_type, file: !1, line: 7, size: 64, elements: !30)
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!30 = !{!31, !33}
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!31 = !DIDerivedType(tag: DW_TAG_member, name: "a", scope: !29, file: !1, line: 7, baseType: !32, size: 32)
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!32 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float)
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!33 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !29, file: !1, line: 7, baseType: !32, size: 32, offset: 32)
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!36 = !DILocalVariable(name: "r", scope: !25, file: !1, line: 9, type: !28)
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!37 = !DILocation(line: 8, column: 11, scope: !25)
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!38 = !DILocation(line: 9, column: 5, scope: !25)
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!39 = !DILocation(line: 10, column: 10, scope: !25)
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!40 = !DILocation(line: 11, column: 1, scope: !25)
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