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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
35 lines
1.6 KiB
LLVM
35 lines
1.6 KiB
LLVM
; RUN: llc -filetype=obj -O0 < %s -mtriple sparc64-unknown-linux-gnu | llvm-dwarfdump - --debug-loc | FileCheck %s
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; The undescribable 128-bit register should be split into two 64-bit registers.
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; CHECK: ({{.*}}, {{.*}}): DW_OP_regx D0, DW_OP_piece 0x8, DW_OP_regx D1, DW_OP_piece 0x8
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target datalayout = "E-m:e-i64:64-n32:64-S128"
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target triple = "sparc64"
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; Function Attrs: nounwind readnone
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define void @fn1(fp128 %b) local_unnamed_addr !dbg !7 {
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entry:
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tail call void @llvm.dbg.value(metadata fp128 %b, i64 0, metadata !13, metadata !18), !dbg !17
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tail call void @llvm.dbg.value(metadata fp128 0xL00000000000000000000000000000000, i64 0, metadata !13, metadata !19), !dbg !17
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ret void, !dbg !20
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, emissionKind: FullDebug)
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!1 = !DIFile(filename: "subreg.c", directory: ".")
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!7 = distinct !DISubprogram(name: "fn1", scope: !1, file: !1, line: 1, type: !8, unit: !0)
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!8 = !DISubroutineType(types: !9)
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!9 = !{null, !10}
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!10 = !DIBasicType(name: "long double", size: 128, encoding: DW_ATE_float)
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!13 = !DILocalVariable(name: "a", scope: !7, file: !1, line: 1, type: !14)
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!14 = !DIBasicType(name: "complex", size: 256, encoding: DW_ATE_complex_float)
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!17 = !DILocation(line: 1, column: 48, scope: !7)
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!18 = !DIExpression(DW_OP_LLVM_fragment, 0, 128)
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!19 = !DIExpression(DW_OP_LLVM_fragment, 128, 128)
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!20 = !DILocation(line: 1, column: 55, scope: !7)
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