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1; RUN: llc -filetype=obj %s -o - | llvm-dwarfdump - | FileCheck %s2;3; Generated at -Os from:4; ptr foo(ptr 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 optsize17define void @_Z5startv() #0 !dbg !4 {18entry:19 %size = alloca i32, align 420 %call = call ptr @_Z3fooPv(ptr %size) #3, !dbg !1521 call void @llvm.dbg.value(metadata ptr %size, metadata !10, metadata !16), !dbg !1722 23 ; The *location* of the variable should be $sp+12. This tells the debugger to24 ; look up its value in [$sp+12].25 ; CHECK: .debug_info contents:26 ; CHECK: DW_TAG_variable27 ; CHECK-NEXT: DW_AT_location28 ; CHECK-NEXT: DW_OP_breg31 WSP+1229 ; CHECK-NEXT: DW_AT_name {{.*}}"size"30 ret void, !dbg !1831}32 33; Function Attrs: optsize34declare ptr @_Z3fooPv(ptr) #135 36; Function Attrs: nounwind readnone37declare void @llvm.dbg.value(metadata, metadata, metadata) #238 39attributes #0 = { nounwind optsize }40attributes #1 = { optsize }41attributes #2 = { nounwind readnone }42attributes #3 = { nounwind optsize }43 44!llvm.dbg.cu = !{!0}45!llvm.module.flags = !{!12, !13}46!llvm.ident = !{!14}47 48!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)49!1 = !DIFile(filename: "<stdin>", directory: "")50!2 = !{}51!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, retainedNodes: !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