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101 lines
4.6 KiB
101 lines
4.6 KiB
4 months ago
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; RUN: llc -filetype=obj -o - < %s | llvm-dwarfdump - --debug-loc | FileCheck %s
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;
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; Created using clang -g -O3 from:
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; struct S0 {
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; short f0;
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; int f3;
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; } a;
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; void fn1(short p1) {
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; struct S0 b, c = {3};
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; b.f3 = p1;
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; a = b = c;
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; }
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;
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; int main() { return 0; }
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;
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; This is similar to the bug in test/DebugInfo/ARM/PR26163.ll, except that there is an
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; extra non-overlapping range first. Thus, we make sure that the backend actually looks
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; at all expressions when determining whether to merge ranges, not just the first one.
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; AS in 26163, we only expect one range as the first one is zero sized.
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;
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;
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; CHECK: (0x0000000000000000, 0x000000000000000f): DW_OP_lit3, DW_OP_piece 0x4, DW_OP_lit0, DW_OP_piece 0x4
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source_filename = "test/DebugInfo/X86/PR26148.ll"
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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-macosx10.11.0"
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%struct.S0 = type { i16, i32 }
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@a = common global %struct.S0 zeroinitializer, align 4, !dbg !0
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #0
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, metadata, metadata) #0
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define void @fn1(i16 signext %p1) !dbg !16 {
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entry:
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tail call void @llvm.dbg.value(metadata i16 %p1, metadata !20, metadata !23), !dbg !24
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tail call void @llvm.dbg.declare(metadata %struct.S0* undef, metadata !21, metadata !23), !dbg !25
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tail call void @llvm.dbg.declare(metadata %struct.S0* undef, metadata !22, metadata !23), !dbg !26
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tail call void @llvm.dbg.value(metadata i32 3, metadata !22, metadata !27), !dbg !26
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tail call void @llvm.dbg.value(metadata i32 0, metadata !22, metadata !28), !dbg !26
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tail call void @llvm.dbg.value(metadata i16 %p1, metadata !21, metadata !29), !dbg !25
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tail call void @llvm.dbg.value(metadata i32 3, metadata !21, metadata !27), !dbg !25
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tail call void @llvm.dbg.value(metadata i32 0, metadata !21, metadata !28), !dbg !25
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store i32 3, i32* bitcast (%struct.S0* @a to i32*), align 4, !dbg !30
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store i32 0, i32* getelementptr inbounds (%struct.S0, %struct.S0* @a, i64 0, i32 1), align 4, !dbg !30
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ret void, !dbg !31
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}
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define i32 @main() !dbg !32 {
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entry:
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ret i32 0, !dbg !35
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}
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attributes #0 = { nounwind readnone }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!12, !13, !14}
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!llvm.ident = !{!15}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = !DIGlobalVariable(name: "a", scope: !2, file: !3, line: 4, type: !6, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 3.9.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "small.c", directory: "/Users/kfischer/Projects/clangbug")
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!4 = !{}
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!5 = !{!0}
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!6 = !DICompositeType(tag: DW_TAG_structure_type, name: "S0", file: !3, line: 1, size: 64, align: 32, elements: !7)
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!7 = !{!8, !10}
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!8 = !DIDerivedType(tag: DW_TAG_member, name: "f0", scope: !6, file: !3, line: 2, baseType: !9, size: 16, align: 16)
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!9 = !DIBasicType(name: "short", size: 16, align: 16, encoding: DW_ATE_signed)
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!10 = !DIDerivedType(tag: DW_TAG_member, name: "f3", scope: !6, file: !3, line: 3, baseType: !11, size: 32, align: 32, offset: 32)
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!11 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!12 = !{i32 2, !"Dwarf Version", i32 2}
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!13 = !{i32 2, !"Debug Info Version", i32 3}
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!14 = !{i32 1, !"PIC Level", i32 2}
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!15 = !{!"clang version 3.9.0"}
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!16 = distinct !DISubprogram(name: "fn1", scope: !3, file: !3, line: 5, type: !17, isLocal: false, isDefinition: true, scopeLine: 5, flags: DIFlagPrototyped, isOptimized: true, unit: !2, retainedNodes: !19)
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!17 = !DISubroutineType(types: !18)
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!18 = !{null, !9}
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!19 = !{!20, !21, !22}
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!20 = !DILocalVariable(name: "p1", arg: 1, scope: !16, file: !3, line: 5, type: !9)
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!21 = !DILocalVariable(name: "b", scope: !16, file: !3, line: 6, type: !6)
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!22 = !DILocalVariable(name: "c", scope: !16, file: !3, line: 6, type: !6)
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!23 = !DIExpression()
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!24 = !DILocation(line: 5, column: 16, scope: !16)
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!25 = !DILocation(line: 6, column: 13, scope: !16)
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!26 = !DILocation(line: 6, column: 16, scope: !16)
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!27 = !DIExpression(DW_OP_LLVM_fragment, 0, 32)
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!28 = !DIExpression(DW_OP_LLVM_fragment, 32, 32)
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!29 = !DIExpression(DW_OP_LLVM_fragment, 32, 16)
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!30 = !DILocation(line: 8, column: 9, scope: !16)
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!31 = !DILocation(line: 9, column: 1, scope: !16)
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!32 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 11, type: !33, isLocal: false, isDefinition: true, scopeLine: 11, isOptimized: true, unit: !2, retainedNodes: !4)
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!33 = !DISubroutineType(types: !34)
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!34 = !{!11}
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!35 = !DILocation(line: 11, column: 14, scope: !32)
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