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 47 define void @_Z1fi(i32 %a) #0 { 48 entry: 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, metadata !MDExpression()), !dbg !18 53 call void @llvm.dbg.declare(metadata %struct.Base* %t, metadata !19, metadata !MDExpression()), !dbg !20 54 ret void, !dbg !21 55 } 56 57 ; Function Attrs: nounwind readnone 58 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 59 60 attributes #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" } 61 attributes #1 = { nounwind readnone } 62 63 !llvm.dbg.cu = !{!0} 64 !llvm.module.flags = !{!16, !22} 65 66 !0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.4 (http://llvm.org/git/clang.git 8a3f9e46cb988d2c664395b21910091e3730ae82) (http://llvm.org/git/llvm.git 4699e9549358bc77824a59114548eecc3f7c523c)", isOptimized: false, emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !11, globals: !2, imports: !2) 67 !1 = !MDFile(filename: "foo.cpp", directory: ".") 68 !2 = !{} 69 !3 = !{!4} 70 !4 = !MDCompositeType(tag: DW_TAG_structure_type, name: "Base", line: 1, size: 128, align: 64, file: !5, elements: !6, identifier: "_ZTS4Base") 71 !5 = !MDFile(filename: "./a.hpp", directory: ".") 72 !6 = !{!7, !9} 73 !7 = !MDDerivedType(tag: DW_TAG_member, name: "a", line: 2, size: 32, align: 32, file: !5, scope: !"_ZTS4Base", baseType: !8) 74 !8 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) 75 !9 = !MDDerivedType(tag: DW_TAG_member, name: "b", line: 3, size: 64, align: 64, offset: 64, file: !5, scope: !"_ZTS4Base", baseType: !10) 76 !10 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS4Base") 77 !11 = !{!12} 78 !12 = !MDSubprogram(name: "f", linkageName: "_Z1fi", line: 3, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 3, file: !1, scope: !13, type: !14, function: void (i32)* @_Z1fi, variables: !2) 79 !13 = !MDFile(filename: "foo.cpp", directory: ".") 80 !14 = !MDSubroutineType(types: !15) 81 !15 = !{null, !8} 82 !16 = !{i32 2, !"Dwarf Version", i32 2} 83 !17 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "a", line: 3, arg: 1, scope: !12, file: !13, type: !8) 84 !18 = !MDLocation(line: 3, scope: !12) 85 !19 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "t", line: 4, scope: !12, file: !13, type: !4) 86 !20 = !MDLocation(line: 4, scope: !12) 87 !21 = !MDLocation(line: 5, scope: !12) 88 !22 = !{i32 1, !"Debug Info Version", i32 3} 89
