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https://github.com/capstone-engine/llvm-capstone.git
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13a79bbfe5
On ELF every section can have a corresponding section symbol. When in an assembly file we have .quad .text the '.text' refers to that symbol. The way we used to handle them is to leave .text an undefined symbol until the very end when the object writer would map them to the actual section symbol. The problem with that is that anything before the end would see an undefined symbol. This could result in bad diagnostics (test/MC/AArch64/label-arithmetic-diags-elf.s), or incorrect results when using the asm streamer (est/MC/Mips/expansion-jal-sym-pic.s). Fixing this will also allow using the section symbol earlier for setting sh_link of SHF_METADATA sections. This patch includes a few hacks to avoid changing our behaviour when handling conflicts between section symbols and other symbols. I reported pr31850 to track that. llvm-svn: 293936
40 lines
1.8 KiB
LLVM
40 lines
1.8 KiB
LLVM
; RUN: %llc_dwarf -O0 < %s | FileCheck %s
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; Do not emit AT_upper_bound for an unbounded array.
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; radar 9241695
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define i32 @main() nounwind ssp !dbg !0 {
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entry:
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%retval = alloca i32, align 4
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%a = alloca [0 x i32], align 4
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store i32 0, i32* %retval
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call void @llvm.dbg.declare(metadata [0 x i32]* %a, metadata !6, metadata !DIExpression()), !dbg !11
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ret i32 0, !dbg !12
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}
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declare void @llvm.dbg.declare(metadata, metadata, metadata) nounwind readnone
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!16}
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!0 = distinct !DISubprogram(name: "main", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, isOptimized: false, unit: !2, scopeLine: 3, file: !14, scope: !1, type: !3)
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!1 = !DIFile(filename: "array.c", directory: "/private/tmp")
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.0 (trunk 129138)", isOptimized: false, emissionKind: FullDebug, file: !14, enums: !15, retainedTypes: !15, imports: null)
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!3 = !DISubroutineType(types: !4)
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!4 = !{!5}
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!5 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!6 = !DILocalVariable(name: "a", line: 4, scope: !7, file: !1, type: !8)
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!7 = distinct !DILexicalBlock(line: 3, column: 12, file: !14, scope: !0)
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!8 = !DICompositeType(tag: DW_TAG_array_type, align: 32, file: !14, scope: !2, baseType: !5, elements: !9)
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!9 = !{!10}
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;CHECK: .section .debug_info,"",@progbits
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;CHECK: DW_TAG_subrange_type
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;CHECK-NEXT: DW_AT_type
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;CHECK-NOT: DW_AT_lower_bound
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;CHECK-NOT: DW_AT_upper_bound
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;CHECK-NEXT: End Of Children Mark
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!10 = !DISubrange(count: -1)
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!11 = !DILocation(line: 4, column: 7, scope: !7)
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!12 = !DILocation(line: 5, column: 3, scope: !7)
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!14 = !DIFile(filename: "array.c", directory: "/private/tmp")
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!15 = !{}
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!16 = !{i32 1, !"Debug Info Version", i32 3}
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