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, i64 0, metadata ![[O:[0-9]+]], metadata ![[PIECE1:[0-9]+]]), 24 ; CHECK: call void @llvm.dbg.value(metadata i64 %outer.coerce1, i64 0, metadata ![[O]], metadata ![[PIECE2:[0-9]+]]), 25 ; CHECK: call void @llvm.dbg.value({{.*}}, i64 0, metadata ![[I1:[0-9]+]], metadata ![[PIECE3:[0-9]+]]), 26 ; CHECK-DAG: ![[O]] = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "outer",{{.*}} line: 10 27 ; CHECK-DAG: ![[PIECE1]] = !MDExpression(DW_OP_bit_piece, 0, 64) 28 ; CHECK-DAG: ![[PIECE2]] = !MDExpression(DW_OP_bit_piece, 64, 64) 29 ; CHECK-DAG: ![[I1]] = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i1",{{.*}} line: 11 30 ; CHECK-DAG: ![[PIECE3]] = !MDExpression(DW_OP_bit_piece, 0, 32) 31 32 ; ModuleID = 'sroasplit-2.c' 33 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 34 target triple = "x86_64-apple-macosx10.9.0" 35 36 %struct.Outer = type { [2 x %struct.Inner] } 37 %struct.Inner = type { i32, i32 } 38 39 ; Function Attrs: nounwind ssp uwtable 40 define i32 @foo(i64 %outer.coerce0, i64 %outer.coerce1) #0 { 41 %outer = alloca %struct.Outer, align 8 42 %i1 = alloca %struct.Inner, align 4 43 %1 = bitcast %struct.Outer* %outer to { i64, i64 }* 44 %2 = getelementptr { i64, i64 }, { i64, i64 }* %1, i32 0, i32 0 45 store i64 %outer.coerce0, i64* %2 46 %3 = getelementptr { i64, i64 }, { i64, i64 }* %1, i32 0, i32 1 47 store i64 %outer.coerce1, i64* %3 48 call void @llvm.dbg.declare(metadata %struct.Outer* %outer, metadata !24, metadata !2), !dbg !25 49 call void @llvm.dbg.declare(metadata %struct.Inner* %i1, metadata !26, metadata !2), !dbg !27 50 %4 = getelementptr inbounds %struct.Outer, %struct.Outer* %outer, i32 0, i32 0, !dbg !27 51 %5 = getelementptr inbounds [2 x %struct.Inner], [2 x %struct.Inner]* %4, i32 0, i64 1, !dbg !27 52 %6 = bitcast %struct.Inner* %i1 to i8*, !dbg !27 53 %7 = bitcast %struct.Inner* %5 to i8*, !dbg !27 54 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %6, i8* %7, i64 8, i32 4, i1 false), !dbg !27 55 %8 = getelementptr inbounds %struct.Inner, %struct.Inner* %i1, i32 0, i32 0, !dbg !28 56 %9 = load i32, i32* %8, align 4, !dbg !28 57 ret i32 %9, !dbg !28 58 } 59 60 ; Function Attrs: nounwind readnone 61 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 62 63 ; Function Attrs: nounwind 64 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #2 65 66 attributes #0 = { nounwind ssp uwtable "no-frame-pointer-elim"="true" } 67 attributes #1 = { nounwind readnone } 68 attributes #2 = { nounwind } 69 70 !llvm.dbg.cu = !{!0} 71 !llvm.module.flags = !{!21, !22} 72 !llvm.ident = !{!23} 73 74 !0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !{}, retainedTypes: !{}, subprograms: !3, globals: !{}, imports: !{}) 75 !1 = !MDFile(filename: "sroasplit-2.c", directory: "") 76 !2 = !MDExpression() 77 !3 = !{!4} 78 !4 = !MDSubprogram(name: "foo", line: 10, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 10, file: !1, scope: !5, type: !6, function: i32 (i64, i64)* @foo, variables: !{}) 79 !5 = !MDFile(filename: "sroasplit-2.c", directory: "") 80 !6 = !MDSubroutineType(types: !7) 81 !7 = !{!8, !9} 82 !8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 83 !9 = !MDDerivedType(tag: DW_TAG_typedef, name: "Outer", line: 8, file: !1, baseType: !10) 84 !10 = !MDCompositeType(tag: DW_TAG_structure_type, line: 6, size: 128, align: 32, file: !1, elements: !11) 85 !11 = !{!12} 86 !12 = !MDDerivedType(tag: DW_TAG_member, name: "inner", line: 7, size: 128, align: 32, file: !1, scope: !10, baseType: !13) 87 !13 = !MDCompositeType(tag: DW_TAG_array_type, size: 128, align: 32, baseType: !14, elements: !19) 88 !14 = !MDDerivedType(tag: DW_TAG_typedef, name: "Inner", line: 4, file: !1, baseType: !15) 89 !15 = !MDCompositeType(tag: DW_TAG_structure_type, line: 1, size: 64, align: 32, file: !1, elements: !16) 90 !16 = !{!17, !18} 91 !17 = !MDDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !1, scope: !15, baseType: !8) 92 !18 = !MDDerivedType(tag: DW_TAG_member, name: "b", line: 3, size: 32, align: 32, offset: 32, file: !1, scope: !15, baseType: !8) 93 !19 = !{!20} 94 !20 = !MDSubrange(count: 2) 95 !21 = !{i32 2, !"Dwarf Version", i32 2} 96 !22 = !{i32 1, !"Debug Info Version", i32 3} 97 !23 = !{!"clang version 3.5.0 "} 98 !24 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "outer", line: 10, arg: 1, scope: !4, file: !5, type: !9) 99 !25 = !MDLocation(line: 10, scope: !4) 100 !26 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "i1", line: 11, scope: !4, file: !5, type: !14) 101 !27 = !MDLocation(line: 11, scope: !4) 102 !28 = !MDLocation(line: 12, scope: !4) 103
