1; RUN: opt %s -passes='sroa,verify' -S -o - | FileCheck %s 2; RUN: opt --try-experimental-debuginfo-iterators %s -passes='sroa,verify' -S -o - | FileCheck %s 3; 4; Test that we can partial emit debug info for aggregates repeatedly 5; split up by SROA. 6; 7; // Compile with -O1 8; typedef struct { 9; int a; 10; int b; 11; } Inner; 12; 13; typedef struct { 14; Inner inner[2]; 15; } Outer; 16; 17; int foo(Outer outer) { 18; Inner i1 = outer.inner[1]; 19; return i1.a; 20; } 21; 22 23; Verify that SROA creates a variable piece when splitting i1. 24; CHECK: #dbg_value(i64 %outer.coerce0, ![[O:[0-9]+]], !DIExpression(DW_OP_LLVM_fragment, 0, 64), 25; CHECK: #dbg_value(i32 {{.*}}, ![[O]], !DIExpression(DW_OP_LLVM_fragment, 64, 32), 26; CHECK: #dbg_value(i32 {{.*}}, ![[O]], !DIExpression(DW_OP_LLVM_fragment, 96, 32), 27; CHECK: #dbg_value({{.*}}, ![[I1:[0-9]+]], !DIExpression(DW_OP_LLVM_fragment, 0, 32), 28; CHECK-DAG: ![[O]] = !DILocalVariable(name: "outer",{{.*}} line: 10 29; CHECK-DAG: ![[I1]] = !DILocalVariable(name: "i1",{{.*}} line: 11 30 31; ModuleID = 'sroasplit-2.c' 32target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 33target triple = "x86_64-apple-macosx10.9.0" 34 35%struct.Outer = type { [2 x %struct.Inner] } 36%struct.Inner = type { i32, i32 } 37 38; Function Attrs: nounwind ssp uwtable 39define i32 @foo(i64 %outer.coerce0, i64 %outer.coerce1) #0 !dbg !4 { 40 %outer = alloca %struct.Outer, align 8 41 %i1 = alloca %struct.Inner, align 4 42 %1 = getelementptr { i64, i64 }, ptr %outer, i32 0, i32 0 43 store i64 %outer.coerce0, ptr %1 44 %2 = getelementptr { i64, i64 }, ptr %outer, i32 0, i32 1 45 store i64 %outer.coerce1, ptr %2 46 call void @llvm.dbg.declare(metadata ptr %outer, metadata !24, metadata !2), !dbg !25 47 call void @llvm.dbg.declare(metadata ptr %i1, metadata !26, metadata !2), !dbg !27 48 %3 = getelementptr inbounds [2 x %struct.Inner], ptr %outer, i32 0, i64 1, !dbg !27 49 call void @llvm.memcpy.p0.p0.i64(ptr align 4 %i1, ptr align 4 %3, i64 8, i1 false), !dbg !27 50 %4 = load i32, ptr %i1, align 4, !dbg !28 51 ret i32 %4, !dbg !28 52} 53 54; Function Attrs: nounwind readnone 55declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 56 57; Function Attrs: nounwind 58declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1) #2 59 60attributes #0 = { nounwind ssp uwtable "frame-pointer"="all" } 61attributes #1 = { nounwind readnone } 62attributes #2 = { nounwind } 63 64!llvm.dbg.cu = !{!0} 65!llvm.module.flags = !{!21, !22} 66!llvm.ident = !{!23} 67 68!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !{}, retainedTypes: !{}, globals: !{}, imports: !{}) 69!1 = !DIFile(filename: "sroasplit-2.c", directory: "") 70!2 = !DIExpression() 71!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: !{}) 72!5 = !DIFile(filename: "sroasplit-2.c", directory: "") 73!6 = !DISubroutineType(types: !7) 74!7 = !{!8, !9} 75!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 76!9 = !DIDerivedType(tag: DW_TAG_typedef, name: "Outer", line: 8, file: !1, baseType: !10) 77!10 = !DICompositeType(tag: DW_TAG_structure_type, line: 6, size: 128, align: 32, file: !1, elements: !11) 78!11 = !{!12} 79!12 = !DIDerivedType(tag: DW_TAG_member, name: "inner", line: 7, size: 128, align: 32, file: !1, scope: !10, baseType: !13) 80!13 = !DICompositeType(tag: DW_TAG_array_type, size: 128, align: 32, baseType: !14, elements: !19) 81!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "Inner", line: 4, file: !1, baseType: !15) 82!15 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 64, align: 32, file: !1, elements: !16) 83!16 = !{!17, !18} 84!17 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !1, scope: !15, baseType: !8) 85!18 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 3, size: 32, align: 32, offset: 32, file: !1, scope: !15, baseType: !8) 86!19 = !{!20} 87!20 = !DISubrange(count: 2) 88!21 = !{i32 2, !"Dwarf Version", i32 2} 89!22 = !{i32 1, !"Debug Info Version", i32 3} 90!23 = !{!"clang version 3.5.0 "} 91!24 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 92!25 = !DILocation(line: 10, scope: !4) 93!26 = !DILocalVariable(name: "i1", line: 11, scope: !4, file: !5, type: !14) 94!27 = !DILocation(line: 11, scope: !4) 95!28 = !DILocation(line: 12, scope: !4) 96