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 ; 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 4 24 ; CHECK: call void @llvm.dbg.declare(metadata [12 x i8]* %[[I1]], metadata ![[VAR:[0-9]+]], metadata ![[PIECE1:[0-9]+]]) 25 ; CHECK: call void @llvm.dbg.value(metadata i32 %[[A:.*]], i64 0, metadata ![[VAR]], metadata ![[PIECE2:[0-9]+]]) 26 ; CHECK: ret i32 %[[A]] 27 ; Read Var and Piece: 28 ; CHECK: ![[VAR]] = !DILocalVariable(name: "i1",{{.*}} line: 11, 29 ; CHECK: ![[PIECE1]] = !DIExpression(DW_OP_bit_piece, 32, 96) 30 ; CHECK: ![[PIECE2]] = !DIExpression(DW_OP_bit_piece, 0, 32) 31 32 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 33 target triple = "x86_64-apple-macosx10.9.0" 34 35 %struct.Outer = type { [2 x %struct.Inner] } 36 %struct.Inner = type { i32, i64 } 37 38 ; Function Attrs: nounwind ssp uwtable 39 define i32 @foo(%struct.Outer* byval align 8 %outer) #0 !dbg !4 { 40 entry: 41 %i1 = alloca %struct.Inner, align 8 42 call void @llvm.dbg.declare(metadata %struct.Outer* %outer, metadata !25, metadata !2), !dbg !26 43 call void @llvm.dbg.declare(metadata %struct.Inner* %i1, metadata !27, metadata !2), !dbg !28 44 %inner = getelementptr inbounds %struct.Outer, %struct.Outer* %outer, i32 0, i32 0, !dbg !28 45 %arrayidx = getelementptr inbounds [2 x %struct.Inner], [2 x %struct.Inner]* %inner, i32 0, i64 1, !dbg !28 46 %0 = bitcast %struct.Inner* %i1 to i8*, !dbg !28 47 %1 = bitcast %struct.Inner* %arrayidx to i8*, !dbg !28 48 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 8, i1 false), !dbg !28 49 %a = getelementptr inbounds %struct.Inner, %struct.Inner* %i1, i32 0, i32 0, !dbg !29 50 %2 = load i32, i32* %a, align 4, !dbg !29 51 ret i32 %2, !dbg !29 52 } 53 54 ; Function Attrs: nounwind readnone 55 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 56 57 ; Function Attrs: nounwind 58 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #2 59 60 attributes #0 = { nounwind ssp uwtable } 61 attributes #1 = { nounwind readnone } 62 attributes #2 = { nounwind } 63 64 !llvm.dbg.cu = !{!0} 65 !llvm.module.flags = !{!22, !23} 66 !llvm.ident = !{!24} 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-1.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, variables: !{}) 72 !5 = !DIFile(filename: "sroasplit-1.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: 256, align: 64, file: !1, elements: !11) 78 !11 = !{!12} 79 !12 = !DIDerivedType(tag: DW_TAG_member, name: "inner", line: 7, size: 256, align: 64, file: !1, scope: !10, baseType: !13) 80 !13 = !DICompositeType(tag: DW_TAG_array_type, size: 256, align: 64, baseType: !14, elements: !20) 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: 128, align: 64, 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: 64, align: 64, offset: 64, file: !1, scope: !15, baseType: !19) 86 !19 = !DIBasicType(tag: DW_TAG_base_type, name: "long int", size: 64, align: 64, encoding: DW_ATE_signed) 87 !20 = !{!21} 88 !21 = !DISubrange(count: 2) 89 !22 = !{i32 2, !"Dwarf Version", i32 2} 90 !23 = !{i32 1, !"Debug Info Version", i32 3} 91 !24 = !{!"clang version 3.5.0 "} 92 !25 = !DILocalVariable(name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 93 !26 = !DILocation(line: 10, scope: !4) 94 !27 = !DILocalVariable(name: "i1", line: 11, scope: !4, file: !5, type: !14) 95 !28 = !DILocation(line: 11, scope: !4) 96 !29 = !DILocation(line: 12, scope: !4) 97
