1; RUN: llc -filetype=obj %s -o - | llvm-dwarfdump - | FileCheck %s 2; 3; Generated at -Os from: 4; void *foo(void *dst); 5; void start() { 6; unsigned size; 7; foo(&size); 8; if (size != 0) { // Work around a bug to preserve the dbg.value. 9; } 10; } 11 12; ModuleID = 'test1.cpp' 13target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" 14target triple = "arm64-apple-ios" 15 16; Function Attrs: nounwind optsize 17define void @_Z5startv() #0 !dbg !4 { 18entry: 19 %size = alloca i32, align 4 20 %0 = bitcast i32* %size to i8*, !dbg !15 21 %call = call i8* @_Z3fooPv(i8* %0) #3, !dbg !15 22 call void @llvm.dbg.value(metadata i32* %size, i64 0, metadata !10, metadata !16), !dbg !17 23 ; CHECK: .debug_info contents: 24 ; CHECK: DW_TAG_variable 25 ; CHECK-NEXT: DW_AT_location 26 ; CHECK-NEXT: DW_AT_name {{.*}}"size" 27 ; CHECK: .debug_loc contents: 28 ; CHECK: Location description: 70 00 29 ret void, !dbg !18 30} 31 32; Function Attrs: optsize 33declare i8* @_Z3fooPv(i8*) #1 34 35; Function Attrs: nounwind readnone 36declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 37 38attributes #0 = { nounwind optsize } 39attributes #1 = { optsize } 40attributes #2 = { nounwind readnone } 41attributes #3 = { nounwind optsize } 42 43!llvm.dbg.cu = !{!0} 44!llvm.module.flags = !{!12, !13} 45!llvm.ident = !{!14} 46 47!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 (trunk 223149) (llvm/trunk 223115)", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) 48!1 = !DIFile(filename: "<stdin>", directory: "") 49!2 = !{} 50!4 = distinct !DISubprogram(name: "start", linkageName: "_Z5startv", line: 2, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 3, file: !5, scope: !6, type: !7, variables: !9) 51!5 = !DIFile(filename: "test1.c", directory: "") 52!6 = !DIFile(filename: "test1.c", directory: "") 53!7 = !DISubroutineType(types: !8) 54!8 = !{null} 55!9 = !{!10} 56!10 = !DILocalVariable(name: "size", line: 4, scope: !4, file: !6, type: !11) 57!11 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned) 58!12 = !{i32 2, !"Dwarf Version", i32 2} 59!13 = !{i32 2, !"Debug Info Version", i32 3} 60!14 = !{!"clang version 3.6.0 (trunk 223149) (llvm/trunk 223115)"} 61!15 = !DILocation(line: 5, column: 3, scope: !4) 62!16 = !DIExpression(DW_OP_deref) 63!17 = !DILocation(line: 4, column: 12, scope: !4) 64!18 = !DILocation(line: 8, column: 1, scope: !4) 65