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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
44 lines
1.5 KiB
LLVM
44 lines
1.5 KiB
LLVM
; RUN: llc -mtriple=x86_64-unknown-unknown -o - %s | FileCheck %s
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; RUN: llc -mtriple=x86_64-unknown-unknown -filetype=obj < %s \
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; RUN: | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF
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define i1 @test() !dbg !4 {
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entry:
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%end = alloca i64, align 8
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br label %while.cond
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while.cond:
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call void @llvm.dbg.value(metadata i64* %end, metadata !5, metadata !6), !dbg !7
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%call = call i1 @fn(i64* %end, i64* %end, i64* null, i8* null, i64 0, i64* null, i32* null, i8* null), !dbg !7
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br label %while.body
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while.body:
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br i1 0, label %while.end, label %while.cond
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while.end:
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ret i1 true
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}
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; CHECK-LABEL: test
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; CHECK: #DEBUG_VALUE: test:w <- [DW_OP_plus_uconst 8] [%RSP+0]
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; DWARF: DW_AT_location [DW_FORM_sec_offset] (
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; DWARF-NEXT: {{.*}} - {{.*}}: DW_OP_breg7 RSP+8)
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declare i1 @fn(i64*, i64*, i64*, i8*, i64, i64*, i32*, i8*)
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2,!3}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 4.0.0", emissionKind: FullDebug)
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!1 = !DIFile(filename: "test.c", directory: "/")
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!2 = !{i32 2, !"Dwarf Version", i32 4}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = distinct !DISubprogram(name: "test", type: !10, unit: !0)
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!5 = !DILocalVariable(name: "w", scope: !4, type: !9)
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!6 = !DIExpression()
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!7 = !DILocation(line: 210, column: 12, scope: !4)
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!8 = !{!9}
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!9 = !DIBasicType(name: "bool", size: 8, encoding: DW_ATE_boolean)
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!10 = !DISubroutineType(types: !8)
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