91 lines · plain
1; RUN: opt %s -passes='sroa,verify' -S -o - | FileCheck %s2;3; Test that we can partial emit debug info for aggregates repeatedly4; split up by SROA.5;6; // Compile with -O17; typedef struct {8; int a;9; long int b;10; } Inner;11;12; typedef struct {13; Inner inner[2];14; } Outer;15;16; int foo(Outer outer) {17; Inner i1 = outer.inner[1];18; return i1.a;19; }20;21 22; Verify that SROA creates a variable piece when splitting i1.23; CHECK: %[[I1:.*]] = alloca [12 x i8], align 424; CHECK: #dbg_declare(ptr %[[I1]], ![[VAR:[0-9]+]], !DIExpression(DW_OP_LLVM_fragment, 32, 96),25; CHECK: #dbg_value(i32 %[[A:.*]], ![[VAR]], !DIExpression(DW_OP_LLVM_fragment, 0, 32),26; CHECK: ret i32 %[[A]]27; Read Var and Piece:28; CHECK: ![[VAR]] = !DILocalVariable(name: "i1",{{.*}} line: 11,29 30target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"31target triple = "x86_64-apple-macosx10.9.0"32 33%struct.Outer = type { [2 x %struct.Inner] }34%struct.Inner = type { i32, i64 }35 36; Function Attrs: nounwind ssp uwtable37define i32 @foo(ptr byval(%struct.Outer) align 8 %outer) #0 !dbg !4 {38entry:39 %i1 = alloca %struct.Inner, align 840 call void @llvm.dbg.declare(metadata ptr %outer, metadata !25, metadata !2), !dbg !2641 call void @llvm.dbg.declare(metadata ptr %i1, metadata !27, metadata !2), !dbg !2842 %arrayidx = getelementptr inbounds [2 x %struct.Inner], ptr %outer, i32 0, i64 1, !dbg !2843 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %i1, ptr align 8 %arrayidx, i64 16, i1 false), !dbg !2844 %0 = load i32, ptr %i1, align 4, !dbg !2945 ret i32 %0, !dbg !2946}47 48; Function Attrs: nounwind readnone49declare void @llvm.dbg.declare(metadata, metadata, metadata) #150 51; Function Attrs: nounwind52declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1) #253 54attributes #0 = { nounwind ssp uwtable }55attributes #1 = { nounwind readnone }56attributes #2 = { nounwind }57 58!llvm.dbg.cu = !{!0}59!llvm.module.flags = !{!22, !23}60!llvm.ident = !{!24}61 62!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !{}, retainedTypes: !{}, globals: !{}, imports: !{})63!1 = !DIFile(filename: "sroasplit-1.c", directory: "")64!2 = !DIExpression()65!4 = distinct !DISubprogram(name: "foo", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 10, file: !1, scope: !5, type: !6, retainedNodes: !{})66!5 = !DIFile(filename: "sroasplit-1.c", directory: "")67!6 = !DISubroutineType(types: !7)68!7 = !{!8, !9}69!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)70!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "Outer", line: 8, file: !1, baseType: !10)71!10 = !DICompositeType(tag: DW_TAG_structure_type, line: 6, size: 256, align: 64, file: !1, elements: !11)72!11 = !{!12}73!12 = !DIDerivedType(tag: DW_TAG_member, name: "inner", line: 7, size: 256, align: 64, file: !1, scope: !10, baseType: !13)74!13 = !DICompositeType(tag: DW_TAG_array_type, size: 256, align: 64, baseType: !14, elements: !20)75!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "Inner", line: 4, file: !1, baseType: !15)76!15 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 128, align: 64, file: !1, elements: !16)77!16 = !{!17, !18}78!17 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !1, scope: !15, baseType: !8)79!18 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 3, size: 64, align: 64, offset: 64, file: !1, scope: !15, baseType: !19)80!19 = !DIBasicType(tag: DW_TAG_base_type, name: "long int", size: 64, align: 64, encoding: DW_ATE_signed)81!20 = !{!21}82!21 = !DISubrange(count: 2)83!22 = !{i32 2, !"Dwarf Version", i32 2}84!23 = !{i32 1, !"Debug Info Version", i32 3}85!24 = !{!"clang version 3.5.0 "}86!25 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9)87!26 = !DILocation(line: 10, scope: !4)88!27 = !DILocalVariable(name: "i1", line: 11, scope: !4, file: !5, type: !14)89!28 = !DILocation(line: 11, scope: !4)90!29 = !DILocation(line: 12, scope: !4)91