; RUN: llc -filetype=obj %s -o - | llvm-dwarfdump - | FileCheck %s ; ; Generated at -Os from: ; void *foo(void *dst); ; void start() { ; unsigned size; ; foo(&size); ; if (size != 0) { // Work around a bug to preserve the dbg.value. ; } ; } ; ModuleID = 'test1.cpp' target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128" target triple = "arm64-apple-ios" ; Function Attrs: nounwind optsize define void @_Z5startv() #0 !dbg !4 { entry: %size = alloca i32, align 4 %0 = bitcast i32* %size to i8*, !dbg !15 %call = call i8* @_Z3fooPv(i8* %0) #3, !dbg !15 call void @llvm.dbg.value(metadata i32* %size, i64 0, metadata !10, metadata !16), !dbg !17 ; CHECK: .debug_info contents: ; CHECK: DW_TAG_variable ; CHECK-NEXT: DW_AT_location ; CHECK-NEXT: DW_AT_name {{.*}}"size" ; CHECK: .debug_loc contents: ; CHECK: Location description: 70 00 ret void, !dbg !18 } ; Function Attrs: optsize declare i8* @_Z3fooPv(i8*) #1 ; Function Attrs: nounwind readnone declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 attributes #0 = { nounwind optsize } attributes #1 = { optsize } attributes #2 = { nounwind readnone } attributes #3 = { nounwind optsize } !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!12, !13} !llvm.ident = !{!14} !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) !1 = !DIFile(filename: "<stdin>", directory: "") !2 = !{} !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) !5 = !DIFile(filename: "test1.c", directory: "") !6 = !DIFile(filename: "test1.c", directory: "") !7 = !DISubroutineType(types: !8) !8 = !{null} !9 = !{!10} !10 = !DILocalVariable(name: "size", line: 4, scope: !4, file: !6, type: !11) !11 = !DIBasicType(tag: DW_TAG_base_type, name: "unsigned int", size: 32, align: 32, encoding: DW_ATE_unsigned) !12 = !{i32 2, !"Dwarf Version", i32 2} !13 = !{i32 2, !"Debug Info Version", i32 3} !14 = !{!"clang version 3.6.0 (trunk 223149) (llvm/trunk 223115)"} !15 = !DILocation(line: 5, column: 3, scope: !4) !16 = !DIExpression(DW_OP_deref) !17 = !DILocation(line: 4, column: 12, scope: !4) !18 = !DILocation(line: 8, column: 1, scope: !4)