2017-03-23 01:15:03 +08:00
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; RUN: llc -mtriple=x86_64-apple-darwin -o - %s -filetype=obj \
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2017-09-12 07:05:20 +08:00
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; RUN: | llvm-dwarfdump -v -debug-info - | FileCheck %s
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2017-03-23 00:50:16 +08:00
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; A single FI location. This used to trigger an assertion in debug libstdc++.
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; CHECK: DW_TAG_formal_parameter
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; fbreg -8
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[dwarfdump] Pretty print location expressions and location lists
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
2017-08-30 05:41:21 +08:00
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; CHECK-NEXT: DW_AT_location {{.*}} (DW_OP_fbreg -8)
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2017-03-23 00:50:16 +08:00
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; CHECK-NEXT: DW_AT_name {{.*}} "dipsy"
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define void @tinkywinky(i8* %dipsy) !dbg !6 {
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entry:
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%dipsy.addr = alloca i8*
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store i8* %dipsy, i8** %dipsy.addr
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call void @llvm.dbg.declare(metadata i8** %dipsy.addr, metadata !12, metadata
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!13), !dbg !14
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ret void, !dbg !15
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!llvm.ident = !{!5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 5.0.0 (trunk 297917) (llvm/trunk 297929)", isOptimized: false,
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runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
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!1 = !DIFile(filename: "teletubbies.c", directory: "/home/davide/work/llvm/build-clang/bin")
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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 = !{!"clang version 5.0.0 (trunk 297917) (llvm/trunk 297929)"}
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!6 = distinct !DISubprogram(name: "tinkywinky", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, flags:
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DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
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!7 = !DISubroutineType(types: !8)
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!8 = !{null, !9}
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!9 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64)
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!10 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !11)
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!11 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
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!12 = !DILocalVariable(name: "dipsy", arg: 1, scope: !6, file: !1, line: 1, type: !9)
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!13 = !DIExpression()
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!14 = !DILocation(line: 1, column: 29, scope: !6)
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!15 = !DILocation(line: 1, column: 37, scope: !6)
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