1; Make sure the backend generates a single DIE and uses ref_addr. 2; CHECK: 0x[[BASE:.*]]: DW_TAG_structure_type 3; CHECK-NEXT: DW_AT_name {{.*}} = "Base" 4; CHECK-NOT: DW_TAG_structure_type 5; CHECK: 0x[[INT:.*]]: DW_TAG_base_type 6; CHECK-NEXT: DW_AT_name {{.*}} = "int" 7; CHECK-NOT: DW_TAG_base_type 8 9; CHECK: DW_TAG_compile_unit 10; CHECK: DW_TAG_formal_parameter 11; CHECK: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[INT]]) 12; CHECK: DW_TAG_variable 13; CHECK: DW_AT_type [DW_FORM_ref_addr] {{.*}}[[BASE]]) 14 15; Make sure llvm-link only generates a single copy of the struct. 16; LINK: DW_TAG_structure_type 17; LINK-NOT: DW_TAG_structure_type 18 19; Content of header files: 20; struct Base { 21; int a; 22; Base *b; 23; }; 24; Content of foo.cpp: 25; 26; #include "a.hpp" 27; void f(int a) { 28; Base t; 29; } 30; Content of bar.cpp: 31; 32; #include "a.hpp" 33; void f(int); 34; void g(int a) { 35; Base t; 36; } 37; int main() { 38; f(0); 39; g(1); 40; return 0; 41; } 42; ModuleID = 'foo.cpp' 43 44%struct.Base = type { i32, %struct.Base* } 45 46; Function Attrs: nounwind ssp uwtable 47define void @_Z1fi(i32 %a) #0 { 48entry: 49 %a.addr = alloca i32, align 4 50 %t = alloca %struct.Base, align 8 51 store i32 %a, i32* %a.addr, align 4 52 call void @llvm.dbg.declare(metadata !{i32* %a.addr}, metadata !17), !dbg !18 53 call void @llvm.dbg.declare(metadata !{%struct.Base* %t}, metadata !19), !dbg !20 54 ret void, !dbg !21 55} 56 57; Function Attrs: nounwind readnone 58declare void @llvm.dbg.declare(metadata, metadata) #1 59 60attributes #0 = { nounwind ssp uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 61attributes #1 = { nounwind readnone } 62 63!llvm.dbg.cu = !{!0} 64!llvm.module.flags = !{!16} 65 66!0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.4 (http://llvm.org/git/clang.git 8a3f9e46cb988d2c664395b21910091e3730ae82) (http://llvm.org/git/llvm.git 4699e9549358bc77824a59114548eecc3f7c523c)", i1 false, metadata !"", i32 0, metadata !2, metadata !3, metadata !11, metadata !2, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [foo.cpp] [DW_LANG_C_plus_plus] 67!1 = metadata !{metadata !"foo.cpp", metadata !"."} 68!2 = metadata !{i32 0} 69!3 = metadata !{metadata !4} 70!4 = metadata !{i32 786451, metadata !5, null, metadata !"Base", i32 1, i64 128, i64 64, i32 0, i32 0, null, metadata !6, i32 0, null, null, metadata !"_ZTS4Base"} ; [ DW_TAG_structure_type ] [Base] [line 1, size 128, align 64, offset 0] [def] [from ] 71!5 = metadata !{metadata !"./a.hpp", metadata !"."} 72!6 = metadata !{metadata !7, metadata !9} 73!7 = metadata !{i32 786445, metadata !5, metadata !"_ZTS4Base", metadata !"a", i32 2, i64 32, i64 32, i64 0, i32 0, metadata !8} ; [ DW_TAG_member ] [a] [line 2, size 32, align 32, offset 0] [from int] 74!8 = metadata !{i32 786468, null, null, metadata !"int", i32 0, i64 32, i64 32, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed] 75!9 = metadata !{i32 786445, metadata !5, metadata !"_ZTS4Base", metadata !"b", i32 3, i64 64, i64 64, i64 64, i32 0, metadata !10} ; [ DW_TAG_member ] [b] [line 3, size 64, align 64, offset 64] [from ] 76!10 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !"_ZTS4Base"} 77!11 = metadata !{metadata !12} 78!12 = metadata !{i32 786478, metadata !1, metadata !13, metadata !"f", metadata !"f", metadata !"_Z1fi", i32 3, metadata !14, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, void (i32)* @_Z1fi, null, null, metadata !2, i32 3} ; [ DW_TAG_subprogram ] [line 3] [def] [f] 79!13 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [foo.cpp] 80!14 = metadata !{i32 786453, i32 0, null, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !15, i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 81!15 = metadata !{null, metadata !8} 82!16 = metadata !{i32 2, metadata !"Dwarf Version", i32 2} 83!17 = metadata !{i32 786689, metadata !12, metadata !"a", metadata !13, i32 16777219, metadata !8, i32 0, i32 0} ; [ DW_TAG_arg_variable ] [a] [line 3] 84!18 = metadata !{i32 3, i32 0, metadata !12, null} 85!19 = metadata !{i32 786688, metadata !12, metadata !"t", metadata !13, i32 4, metadata !4, i32 0, i32 0} ; [ DW_TAG_auto_variable ] [t] [line 4] 86!20 = metadata !{i32 4, i32 0, metadata !12, null} 87!21 = metadata !{i32 5, i32 0, metadata !12, null} 88