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 { 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 = !{!"0x11\004\00clang version 3.6.0 (trunk 223149) (llvm/trunk 223115)\001\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [<stdin>] [DW_LANG_C_plus_plus] 48!1 = !{!"<stdin>", !""} 49!2 = !{} 50!3 = !{!4} 51!4 = !{!"0x2e\00start\00start\00_Z5startv\002\000\001\000\000\00256\001\003", !5, !6, !7, null, void ()* @_Z5startv, null, null, !9} ; [ DW_TAG_subprogram ] [line 2] [def] [scope 3] [start] 52!5 = !{!"test1.c", !""} 53!6 = !{!"0x29", !5} ; [ DW_TAG_file_type ] [/test1.c] 54!7 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !8, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 55!8 = !{null} 56!9 = !{!10} 57!10 = !{!"0x100\00size\004\000", !4, !6, !11} ; [ DW_TAG_auto_variable ] [size] [line 4] 58!11 = !{!"0x24\00unsigned int\000\0032\0032\000\000\007", null, null} ; [ DW_TAG_base_type ] [unsigned int] [line 0, size 32, align 32, offset 0, enc DW_ATE_unsigned] 59!12 = !{i32 2, !"Dwarf Version", i32 2} 60!13 = !{i32 2, !"Debug Info Version", i32 2} 61!14 = !{!"clang version 3.6.0 (trunk 223149) (llvm/trunk 223115)"} 62!15 = !MDLocation(line: 5, column: 3, scope: !4) 63!16 = !{!"0x102"} ; [ DW_TAG_expression ] 64!17 = !MDLocation(line: 4, column: 12, scope: !4) 65!18 = !MDLocation(line: 8, column: 1, scope: !4) 66