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96e8543691
Summary: Based on Fred's patch here: https://reviews.llvm.org/D6771 I can't seem to commandeer the old review, so I'm creating a new one. With that change the locations exrpessions are pretty printed inline in the DIE tree. The output looks like this for debug_loc entries: DW_AT_location [DW_FORM_data4] (0x00000000 0x0000000000000001 - 0x000000000000000b: DW_OP_consts +3 0x000000000000000b - 0x0000000000000012: DW_OP_consts +7 0x0000000000000012 - 0x000000000000001b: DW_OP_reg0 RAX, DW_OP_piece 0x4 0x000000000000001b - 0x0000000000000024: DW_OP_breg5 RDI+0) And like this for debug_loc.dwo entries: DW_AT_location [DW_FORM_sec_offset] (0x00000000 Addr idx 2 (w/ length 190): DW_OP_consts +0, DW_OP_stack_value Addr idx 3 (w/ length 23): DW_OP_reg0 RAX, DW_OP_piece 0x4) Simple locations without ranges are printed inline: DW_AT_location [DW_FORM_block1] (DW_OP_reg4 RSI, DW_OP_piece 0x4, DW_OP_bit_piece 0x20 0x0) The debug_loc(.dwo) dumping in changed accordingly to factor the code. Reviewers: dblaikie, aprantl, friss Subscribers: mgorny, javed.absar, hiraditya, llvm-commits, JDevlieghere Differential Revision: https://reviews.llvm.org/D37123 llvm-svn: 312042
76 lines
3.2 KiB
LLVM
76 lines
3.2 KiB
LLVM
; RUN: llc -filetype=obj -o %t.o %s
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; RUN: llvm-dwarfdump %t.o | FileCheck %s
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; Testcase generated using 'clang -g -O2 -S -emit-llvm' from the following:
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;; void sink(void);
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;; static __attribute__((always_inline)) void bar(int a) { sink(); }
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;; void foo(void) {
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;; bar(0);
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;; bar(0);
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;; }
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; Check that we have formal parameters for 'a' in both inlined subroutines.
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; CHECK: .debug_info
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; CHECK: DW_TAG_inlined_subroutine
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; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "bar"
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; CHECK: DW_TAG_formal_parameter
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; CHECK-NEXT: DW_AT_const_value
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; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "a"
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; CHECK: DW_TAG_inlined_subroutine
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; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "bar"
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; CHECK: DW_TAG_formal_parameter
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; CHECK-NEXT: DW_AT_location [DW_FORM_data4] (
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; CHECK-NEXT: {{.*}} - {{.*}}: DW_OP_consts +0)
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; CHECK-NEXT: DW_AT_abstract_origin {{.*}} "a"
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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-darwin"
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; Function Attrs: nounwind ssp uwtable
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define void @foo() #0 !dbg !4 {
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entry:
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tail call void @llvm.dbg.value(metadata i32 0, metadata !12, metadata !17) #3, !dbg !18
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tail call void @sink() #3, !dbg !20
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tail call void @llvm.dbg.value(metadata i32 0, metadata !12, metadata !17) #3, !dbg !21
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tail call void @sink() #3, !dbg !23
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ret void, !dbg !24
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}
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declare void @sink()
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, metadata, metadata) #2
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attributes #0 = { nounwind ssp uwtable }
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attributes #2 = { nounwind readnone }
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attributes #3 = { nounwind }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!13, !14, !15}
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!llvm.ident = !{!16}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.7.0 (trunk 235110) (llvm/trunk 235108)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
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!1 = !DIFile(filename: "t.c", directory: "/path/to/dir")
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!2 = !{}
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!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !2)
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!5 = !DISubroutineType(types: !6)
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!6 = !{null}
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!7 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 2, type: !8, isLocal: true, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !11)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null, !10}
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!10 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!11 = !{!12}
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!12 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 2, type: !10)
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!13 = !{i32 2, !"Dwarf Version", i32 2}
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!14 = !{i32 2, !"Debug Info Version", i32 3}
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!15 = !{i32 1, !"PIC Level", i32 2}
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!16 = !{!"clang version 3.7.0 (trunk 235110) (llvm/trunk 235108)"}
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!17 = !DIExpression()
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!18 = !DILocation(line: 2, column: 52, scope: !7, inlinedAt: !19)
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!19 = distinct !DILocation(line: 4, column: 3, scope: !4)
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!20 = !DILocation(line: 2, column: 57, scope: !7, inlinedAt: !19)
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!21 = !DILocation(line: 2, column: 52, scope: !7, inlinedAt: !22)
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!22 = distinct !DILocation(line: 5, column: 3, scope: !4)
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!23 = !DILocation(line: 2, column: 57, scope: !7, inlinedAt: !22)
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!24 = !DILocation(line: 6, column: 1, scope: !4)
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