1 ; ModuleID = 'array.c' 2 ; 3 ; From (clang -g -c -O0): 4 ; 5 ; void f(int* p) { 6 ; p[0] = 42; 7 ; } 8 ; 9 ; int main(int argc, char** argv) { 10 ; int array[4] = { 0, 1, 2, 3 }; 11 ; f(array); 12 ; return array[0]; 13 ; } 14 ; 15 ; RUN: opt %s -O2 -S -o - | FileCheck %s 16 ; Test that we correctly lower dbg.declares for arrays. 17 ; 18 ; CHECK: define i32 @main 19 ; CHECK: call void @llvm.dbg.value(metadata i32 42, i64 0, metadata ![[ARRAY:[0-9]+]], metadata ![[EXPR:[0-9]+]]) 20 ; CHECK: ![[ARRAY]] = !DILocalVariable(name: "array",{{.*}} line: 6 21 ; CHECK: ![[EXPR]] = !DIExpression(DW_OP_bit_piece, 0, 32) 22 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" 23 target triple = "x86_64-apple-macosx10.9.0" 24 25 @main.array = private unnamed_addr constant [4 x i32] [i32 0, i32 1, i32 2, i32 3], align 16 26 27 ; Function Attrs: nounwind ssp uwtable 28 define void @f(i32* %p) #0 !dbg !4 { 29 entry: 30 %p.addr = alloca i32*, align 8 31 store i32* %p, i32** %p.addr, align 8 32 call void @llvm.dbg.declare(metadata i32** %p.addr, metadata !19, metadata !DIExpression()), !dbg !20 33 %0 = load i32*, i32** %p.addr, align 8, !dbg !21 34 %arrayidx = getelementptr inbounds i32, i32* %0, i64 0, !dbg !21 35 store i32 42, i32* %arrayidx, align 4, !dbg !21 36 ret void, !dbg !22 37 } 38 39 ; Function Attrs: nounwind readnone 40 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 41 42 ; Function Attrs: nounwind ssp uwtable 43 define i32 @main(i32 %argc, i8** %argv) #0 !dbg !10 { 44 entry: 45 %retval = alloca i32, align 4 46 %argc.addr = alloca i32, align 4 47 %argv.addr = alloca i8**, align 8 48 %array = alloca [4 x i32], align 16 49 store i32 0, i32* %retval 50 store i32 %argc, i32* %argc.addr, align 4 51 call void @llvm.dbg.declare(metadata i32* %argc.addr, metadata !23, metadata !DIExpression()), !dbg !24 52 store i8** %argv, i8*** %argv.addr, align 8 53 call void @llvm.dbg.declare(metadata i8*** %argv.addr, metadata !25, metadata !DIExpression()), !dbg !24 54 call void @llvm.dbg.declare(metadata [4 x i32]* %array, metadata !26, metadata !DIExpression()), !dbg !30 55 %0 = bitcast [4 x i32]* %array to i8*, !dbg !30 56 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast ([4 x i32]* @main.array to i8*), i64 16, i32 16, i1 false), !dbg !30 57 %arraydecay = getelementptr inbounds [4 x i32], [4 x i32]* %array, i32 0, i32 0, !dbg !31 58 call void @f(i32* %arraydecay), !dbg !31 59 %arrayidx = getelementptr inbounds [4 x i32], [4 x i32]* %array, i32 0, i64 0, !dbg !32 60 %1 = load i32, i32* %arrayidx, align 4, !dbg !32 61 ret i32 %1, !dbg !32 62 } 63 64 ; Function Attrs: nounwind 65 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #2 66 67 attributes #0 = { nounwind ssp uwtable } 68 attributes #1 = { nounwind readnone } 69 attributes #2 = { nounwind } 70 71 !llvm.dbg.cu = !{!0} 72 !llvm.module.flags = !{!16, !17} 73 !llvm.ident = !{!18} 74 75 !0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 76 !1 = !DIFile(filename: "array.c", directory: "") 77 !2 = !{} 78 !4 = distinct !DISubprogram(name: "f", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2) 79 !5 = !DIFile(filename: "array.c", directory: "") 80 !6 = !DISubroutineType(types: !7) 81 !7 = !{null, !8} 82 !8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9) 83 !9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 84 !10 = distinct !DISubprogram(name: "main", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 5, file: !1, scope: !5, type: !11, variables: !2) 85 !11 = !DISubroutineType(types: !12) 86 !12 = !{!9, !9, !13} 87 !13 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !14) 88 !14 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !15) 89 !15 = !DIBasicType(tag: DW_TAG_base_type, name: "char", size: 8, align: 8, encoding: DW_ATE_signed_char) 90 !16 = !{i32 2, !"Dwarf Version", i32 2} 91 !17 = !{i32 1, !"Debug Info Version", i32 3} 92 !18 = !{!"clang version 3.5.0 "} 93 !19 = !DILocalVariable(name: "p", line: 1, arg: 1, scope: !4, file: !5, type: !8) 94 !20 = !DILocation(line: 1, scope: !4) 95 !21 = !DILocation(line: 2, scope: !4) 96 !22 = !DILocation(line: 3, scope: !4) 97 !23 = !DILocalVariable(name: "argc", line: 5, arg: 1, scope: !10, file: !5, type: !9) 98 !24 = !DILocation(line: 5, scope: !10) 99 !25 = !DILocalVariable(name: "argv", line: 5, arg: 2, scope: !10, file: !5, type: !13) 100 !26 = !DILocalVariable(name: "array", line: 6, scope: !10, file: !5, type: !27) 101 !27 = !DICompositeType(tag: DW_TAG_array_type, size: 128, align: 32, baseType: !9, elements: !28) 102 !28 = !{!29} 103 !29 = !DISubrange(count: 4) 104 !30 = !DILocation(line: 6, scope: !10) 105 !31 = !DILocation(line: 7, scope: !10) 106 !32 = !DILocation(line: 8, scope: !10) 107
