1 ; RUN: opt %s -sroa -verify -S -o - | FileCheck %s 2 ; 3 ; Test that we can partial emit debug info for aggregates repeatedly 4 ; split up by SROA. 5 ; 6 ; // Compile with -O1 7 ; typedef struct { 8 ; int a; 9 ; 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: call void @llvm.dbg.value(metadata i64 %outer.coerce0, metadata ![[O:[0-9]+]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 64)), 24 ; CHECK: call void @llvm.dbg.value(metadata i32 {{.*}}, metadata ![[O]], metadata !DIExpression(DW_OP_LLVM_fragment, 64, 32)), 25 ; CHECK: call void @llvm.dbg.value(metadata i32 {{.*}}, metadata ![[O]], metadata !DIExpression(DW_OP_LLVM_fragment, 96, 32)), 26 ; CHECK: call void @llvm.dbg.value({{.*}}, metadata ![[I1:[0-9]+]], metadata !DIExpression(DW_OP_LLVM_fragment, 0, 32)), 27 ; CHECK-DAG: ![[O]] = !DILocalVariable(name: "outer",{{.*}} line: 10 28 ; CHECK-DAG: ![[I1]] = !DILocalVariable(name: "i1",{{.*}} line: 11 29 30 ; ModuleID = 'sroasplit-2.c' 31 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 32 target triple = "x86_64-apple-macosx10.9.0" 33 34 %struct.Outer = type { [2 x %struct.Inner] } 35 %struct.Inner = type { i32, i32 } 36 37 ; Function Attrs: nounwind ssp uwtable 38 define i32 @foo(i64 %outer.coerce0, i64 %outer.coerce1) #0 !dbg !4 { 39 %outer = alloca %struct.Outer, align 8 40 %i1 = alloca %struct.Inner, align 4 41 %1 = bitcast %struct.Outer* %outer to { i64, i64 }* 42 %2 = getelementptr { i64, i64 }, { i64, i64 }* %1, i32 0, i32 0 43 store i64 %outer.coerce0, i64* %2 44 %3 = getelementptr { i64, i64 }, { i64, i64 }* %1, i32 0, i32 1 45 store i64 %outer.coerce1, i64* %3 46 call void @llvm.dbg.declare(metadata %struct.Outer* %outer, metadata !24, metadata !2), !dbg !25 47 call void @llvm.dbg.declare(metadata %struct.Inner* %i1, metadata !26, metadata !2), !dbg !27 48 %4 = getelementptr inbounds %struct.Outer, %struct.Outer* %outer, i32 0, i32 0, !dbg !27 49 %5 = getelementptr inbounds [2 x %struct.Inner], [2 x %struct.Inner]* %4, i32 0, i64 1, !dbg !27 50 %6 = bitcast %struct.Inner* %i1 to i8*, !dbg !27 51 %7 = bitcast %struct.Inner* %5 to i8*, !dbg !27 52 call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %6, i8* align 4 %7, i64 8, i1 false), !dbg !27 53 %8 = getelementptr inbounds %struct.Inner, %struct.Inner* %i1, i32 0, i32 0, !dbg !28 54 %9 = load i32, i32* %8, align 4, !dbg !28 55 ret i32 %9, !dbg !28 56 } 57 58 ; Function Attrs: nounwind readnone 59 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 60 61 ; Function Attrs: nounwind 62 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1) #2 63 64 attributes #0 = { nounwind ssp uwtable "no-frame-pointer-elim"="true" } 65 attributes #1 = { nounwind readnone } 66 attributes #2 = { nounwind } 67 68 !llvm.dbg.cu = !{!0} 69 !llvm.module.flags = !{!21, !22} 70 !llvm.ident = !{!23} 71 72 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !{}, retainedTypes: !{}, globals: !{}, imports: !{}) 73 !1 = !DIFile(filename: "sroasplit-2.c", directory: "") 74 !2 = !DIExpression() 75 !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: !{}) 76 !5 = !DIFile(filename: "sroasplit-2.c", directory: "") 77 !6 = !DISubroutineType(types: !7) 78 !7 = !{!8, !9} 79 !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 80 !9 = !DIDerivedType(tag: DW_TAG_typedef, name: "Outer", line: 8, file: !1, baseType: !10) 81 !10 = !DICompositeType(tag: DW_TAG_structure_type, line: 6, size: 128, align: 32, file: !1, elements: !11) 82 !11 = !{!12} 83 !12 = !DIDerivedType(tag: DW_TAG_member, name: "inner", line: 7, size: 128, align: 32, file: !1, scope: !10, baseType: !13) 84 !13 = !DICompositeType(tag: DW_TAG_array_type, size: 128, align: 32, baseType: !14, elements: !19) 85 !14 = !DIDerivedType(tag: DW_TAG_typedef, name: "Inner", line: 4, file: !1, baseType: !15) 86 !15 = !DICompositeType(tag: DW_TAG_structure_type, line: 1, size: 64, align: 32, file: !1, elements: !16) 87 !16 = !{!17, !18} 88 !17 = !DIDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !1, scope: !15, baseType: !8) 89 !18 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 3, size: 32, align: 32, offset: 32, file: !1, scope: !15, baseType: !8) 90 !19 = !{!20} 91 !20 = !DISubrange(count: 2) 92 !21 = !{i32 2, !"Dwarf Version", i32 2} 93 !22 = !{i32 1, !"Debug Info Version", i32 3} 94 !23 = !{!"clang version 3.5.0 "} 95 !24 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 96 !25 = !DILocation(line: 10, scope: !4) 97 !26 = !DILocalVariable(name: "i1", line: 11, scope: !4, file: !5, type: !14) 98 !27 = !DILocation(line: 11, scope: !4) 99 !28 = !DILocation(line: 12, scope: !4) 100
