66 lines
3.0 KiB
LLVM
66 lines
3.0 KiB
LLVM
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; RUN: llc -mtriple=x86_64-apple-darwin %s -o - -filetype=obj | llvm-dwarfdump - | FileCheck %s
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; CHECK: 0x00000[[G:.*]]: DW_TAG_variable
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; CHECK-NEXT: DW_AT_name ("g")
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; CHECK: DW_TAG_array_type
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; CHECK-NEXT: DW_AT_type ({{.*}} "int")
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; CHECK-NOT: DW_TAG
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; CHECK: DW_TAG_subrange_type
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; CHECK-NEXT: DW_AT_type ({{.*}} "__ARRAY_SIZE_TYPE__")
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; CHECK-NEXT: DW_AT_count (0x00000[[G]])
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; Test that a VLA referring to a global variable is handled correctly.
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; Clang doesn't generate this, but the verifier allows it.
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source_filename = "/tmp/test.c"
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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-macosx10.13.0"
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@g = common local_unnamed_addr global i32 0, align 4, !dbg !0
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define void @f() !dbg !12 {
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entry:
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%0 = load i32, i32* @g, align 4, !dbg !22
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%1 = zext i32 %0 to i64, !dbg !22
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%vla = alloca i32, i64 %1, align 16, !dbg !22
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call void @llvm.dbg.declare(metadata i32* %vla, metadata !16, metadata !DIExpression()), !dbg !22
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call void @llvm.dbg.value(metadata i32 2, metadata !21, metadata !DIExpression()), !dbg !22
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%call = call i32 (i32*, ...) bitcast (i32 (...)* @use to i32 (i32*, ...)*)(i32* nonnull %vla), !dbg !22
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ret void, !dbg !22
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}
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #0
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declare i32 @use(...) local_unnamed_addr
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; Function Attrs: nounwind readnone speculatable
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declare void @llvm.dbg.value(metadata, metadata, metadata) #0
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attributes #0 = { nounwind readnone speculatable }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!7, !8, !9, !10}
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!llvm.ident = !{!11}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "g", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (trunk 324259) (llvm/trunk 324261)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "/tmp/test.c", directory: "/")
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!4 = !{}
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!5 = !{!0}
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!6 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)
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!7 = !{i32 2, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{i32 1, !"wchar_size", i32 4}
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!10 = !{i32 7, !"PIC Level", i32 2}
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!11 = !{!"clang version 7.0.0 (trunk 324259) (llvm/trunk 324261)"}
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!12 = distinct !DISubprogram(name: "f", scope: !3, file: !3, line: 3, type: !13, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !2, retainedNodes: !15)
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!13 = !DISubroutineType(types: !14)
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!14 = !{null}
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!15 = !{!16, !21}
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!16 = !DILocalVariable(name: "array", scope: !12, file: !3, line: 4, type: !17)
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!17 = !DICompositeType(tag: DW_TAG_array_type, baseType: !18, elements: !19)
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!18 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!19 = !{!20}
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!20 = !DISubrange(count: !1)
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!21 = !DILocalVariable(name: "count", scope: !12, file: !3, line: 5, type: !18)
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!22 = !DILocation(line: 7, column: 1, scope: !12)
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