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' 13 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" 14 target triple = "arm64-apple-ios" 15 16 ; Function Attrs: nounwind optsize 17 define void @_Z5startv() #0 !dbg !4 { 18 entry: 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 33 declare i8* @_Z3fooPv(i8*) #1 34 35 ; Function Attrs: nounwind readnone 36 declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 37 38 attributes #0 = { nounwind optsize } 39 attributes #1 = { optsize } 40 attributes #2 = { nounwind readnone } 41 attributes #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: 1, file: !1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2) 48 !1 = !DIFile(filename: "<stdin>", directory: "") 49 !2 = !{} 50 !3 = !{!4} 51 !4 = distinct !DISubprogram(name: "start", linkageName: "_Z5startv", line: 2, isLocal: false, isDefinition: true, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 3, file: !5, scope: !6, type: !7, variables: !9) 52 !5 = !DIFile(filename: "test1.c", directory: "") 53 !6 = !DIFile(filename: "test1.c", directory: "") 54 !7 = !DISubroutineType(types: !8) 55 !8 = !{null} 56 !9 = !{!10} 57 !10 = !DILocalVariable(name: "size", line: 4, scope: !4, file: !6, type: !11) 58 !11 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned) 59 !12 = !{i32 2, !"Dwarf Version", i32 2} 60 !13 = !{i32 2, !"Debug Info Version", i32 3} 61 !14 = !{!"clang version 3.6.0 (trunk 223149) (llvm/trunk 223115)"} 62 !15 = !DILocation(line: 5, column: 3, scope: !4) 63 !16 = !DIExpression(DW_OP_deref) 64 !17 = !DILocation(line: 4, column: 12, scope: !4) 65 !18 = !DILocation(line: 8, column: 1, scope: !4) 66
