diff options
Diffstat (limited to 'llvm/test/DebugInfo/X86/vla-global.ll')
| -rw-r--r-- | llvm/test/DebugInfo/X86/vla-global.ll | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/llvm/test/DebugInfo/X86/vla-global.ll b/llvm/test/DebugInfo/X86/vla-global.ll new file mode 100644 index 00000000000..b333dc6c9d2 --- /dev/null +++ b/llvm/test/DebugInfo/X86/vla-global.ll @@ -0,0 +1,65 @@ +; RUN: llc -mtriple=x86_64-apple-darwin %s -o - -filetype=obj | llvm-dwarfdump - | FileCheck %s +; CHECK: 0x00000[[G:.*]]: DW_TAG_variable +; CHECK-NEXT: DW_AT_name ("g") +; CHECK: DW_TAG_array_type +; CHECK-NEXT: DW_AT_type (cu + {{.*}} "int") +; CHECK-NOT: DW_TAG +; CHECK: DW_TAG_subrange_type +; CHECK-NEXT: DW_AT_type (cu + {{.*}} "sizetype") +; CHECK-NEXT: DW_AT_count (cu + 0x0[[G]]) +; Test that a VLA referring to a global variable is handled correctly. +; Clang doesn't generate this, but the verifier allows it. +source_filename = "/tmp/test.c" +target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-apple-macosx10.13.0" + +@g = common local_unnamed_addr global i32 0, align 4, !dbg !0 + +define void @f() !dbg !12 { +entry: + %0 = load i32, i32* @g, align 4, !dbg !22 + %1 = zext i32 %0 to i64, !dbg !22 + %vla = alloca i32, i64 %1, align 16, !dbg !22 + call void @llvm.dbg.declare(metadata i32* %vla, metadata !16, metadata !DIExpression()), !dbg !22 + call void @llvm.dbg.value(metadata i32 2, metadata !21, metadata !DIExpression()), !dbg !22 + %call = call i32 (i32*, ...) bitcast (i32 (...)* @use to i32 (i32*, ...)*)(i32* nonnull %vla), !dbg !22 + ret void, !dbg !22 +} + +; Function Attrs: nounwind readnone speculatable +declare void @llvm.dbg.declare(metadata, metadata, metadata) #0 + +declare i32 @use(...) local_unnamed_addr + +; Function Attrs: nounwind readnone speculatable +declare void @llvm.dbg.value(metadata, metadata, metadata) #0 + +attributes #0 = { nounwind readnone speculatable } + +!llvm.dbg.cu = !{!2} +!llvm.module.flags = !{!7, !8, !9, !10} +!llvm.ident = !{!11} + +!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression()) +!1 = distinct !DIGlobalVariable(name: "g", scope: !2, file: !3, line: 1, type: !6, isLocal: false, isDefinition: true) +!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) +!3 = !DIFile(filename: "/tmp/test.c", directory: "/") +!4 = !{} +!5 = !{!0} +!6 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned) +!7 = !{i32 2, !"Dwarf Version", i32 4} +!8 = !{i32 2, !"Debug Info Version", i32 3} +!9 = !{i32 1, !"wchar_size", i32 4} +!10 = !{i32 7, !"PIC Level", i32 2} +!11 = !{!"clang version 7.0.0 (trunk 324259) (llvm/trunk 324261)"} +!12 = distinct !DISubprogram(name: "f", scope: !3, file: !3, line: 3, type: !13, isLocal: false, isDefinition: true, scopeLine: 3, isOptimized: true, unit: !2, variables: !15) +!13 = !DISubroutineType(types: !14) +!14 = !{null} +!15 = !{!16, !21} +!16 = !DILocalVariable(name: "array", scope: !12, file: !3, line: 4, type: !17) +!17 = !DICompositeType(tag: DW_TAG_array_type, baseType: !18, elements: !19) +!18 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!19 = !{!20} +!20 = !DISubrange(count: !1) +!21 = !DILocalVariable(name: "count", scope: !12, file: !3, line: 5, type: !18) +!22 = !DILocation(line: 7, column: 1, scope: !12) |
