1 ; REQUIRES: object-emission 2 3 ; RUN: llc -mtriple=x86_64-linux -O0 -filetype=obj < %s > %t 4 ; RUN: llvm-dwarfdump %t | FileCheck %s 5 6 ; IR generated with `clang++ -g -emit-llvm -S` from the following code: 7 ; template<int x, int*, template<typename> class y, int ...z> int func() { return 3; } 8 ; template<typename> struct y_impl { struct nested { }; }; 9 ; int glbl = func<3, &glbl, y_impl, 1, 2>(); 10 ; y_impl<int>::nested n; 11 12 ; CHECK: [[INT:0x[0-9a-f]*]]:{{ *}}DW_TAG_base_type 13 ; CHECK-NEXT: DW_AT_name{{.*}} = "int" 14 15 ; CHECK: DW_TAG_structure_type 16 ; CHECK-NEXT: DW_AT_name{{.*}}"y_impl<int>" 17 ; CHECK-NOT: NULL 18 ; CHECK: DW_TAG_template_type_parameter 19 20 ; CHECK: DW_AT_name{{.*}}"func<3, &glbl, y_impl, 1, 2>" 21 ; CHECK-NOT: NULL 22 ; CHECK: DW_TAG_template_value_parameter 23 ; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INT]]} 24 ; CHECK-NEXT: DW_AT_name{{.*}}= "x" 25 26 ; This could be made shorter by encoding it as _sdata rather than data4, or 27 ; even as data1. DWARF strongly urges implementations to prefer 28 ; _sdata/_udata rather than dataN 29 30 ; CHECK-NEXT: DW_AT_const_value [DW_FORM_data4]{{.*}}(0x00000003) 31 32 ; CHECK: DW_TAG_template_value_parameter 33 ; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INTPTR:0x[0-9a-f]*]]} 34 35 ; The address of the global 'glbl', followed by DW_OP_stack_value (9f), to use 36 ; the value immediately, rather than indirecting through the address. 37 38 ; CHECK-NEXT: DW_AT_location [DW_FORM_block1]{{ *}}(<0x0a> 03 00 00 00 00 00 00 00 00 9f ) 39 ; CHECK-NOT: NULL 40 41 ; CHECK: DW_TAG_GNU_template_template_param 42 ; CHECK-NEXT: DW_AT_name{{.*}}= "y" 43 ; CHECK-NEXT: DW_AT_GNU_template_name{{.*}}= "y_impl" 44 ; CHECK-NOT: NULL 45 46 ; CHECK: DW_TAG_GNU_template_parameter_pack 47 ; CHECK-NOT: NULL 48 ; CHECK: DW_TAG_template_value_parameter 49 ; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INT]]} 50 ; CHECK-NEXT: DW_AT_const_value [DW_FORM_data4]{{.*}}(0x00000001) 51 ; CHECK-NOT: NULL 52 ; CHECK: DW_TAG_template_value_parameter 53 ; CHECK-NEXT: DW_AT_type{{.*}}=> {[[INT]]} 54 ; CHECK-NEXT: DW_AT_const_value [DW_FORM_data4]{{.*}}(0x00000002) 55 56 ; CHECK: [[INTPTR]]:{{ *}}DW_TAG_pointer_type 57 ; CHECK-NEXT: DW_AT_type{{.*}} => {[[INT]]} 58 59 %"struct.y_impl<int>::nested" = type { i8 } 60 61 @glbl = global i32 0, align 4 62 @n = global %"struct.y_impl<int>::nested" zeroinitializer, align 1 63 @llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 65535, void ()* @_GLOBAL__I_a }] 64 65 define internal void @__cxx_global_var_init() section ".text.startup" { 66 entry: 67 %call = call i32 @_Z4funcILi3EXadL_Z4glblEE6y_implJLi1ELi2EEEiv(), !dbg !37 68 store i32 %call, i32* @glbl, align 4, !dbg !37 69 ret void, !dbg !37 70 } 71 72 ; Function Attrs: nounwind uwtable 73 define linkonce_odr i32 @_Z4funcILi3EXadL_Z4glblEE6y_implJLi1ELi2EEEiv() #0 { 74 entry: 75 ret i32 3, !dbg !38 76 } 77 78 define internal void @_GLOBAL__I_a() section ".text.startup" { 79 entry: 80 call void @__cxx_global_var_init(), !dbg !39 81 ret void, !dbg !39 82 } 83 84 attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf"="true" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } 85 86 !llvm.dbg.cu = !{!0} 87 !llvm.module.flags = !{!36} 88 89 !0 = metadata !{i32 786449, metadata !1, i32 4, metadata !"clang version 3.4 ", i1 false, metadata !"", i32 0, metadata !2, metadata !2, metadata !3, metadata !23, metadata !2, metadata !""} ; [ DW_TAG_compile_unit ] [/tmp/templ.cpp] [DW_LANG_C_plus_plus] 90 !1 = metadata !{metadata !"templ.cpp", metadata !"/tmp"} 91 !2 = metadata !{i32 0} 92 !3 = metadata !{metadata !4, metadata !8, metadata !21} 93 !4 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"__cxx_global_var_init", metadata !"__cxx_global_var_init", metadata !"", i32 3, metadata !6, i1 true, i1 true, i32 0, i32 0, null, i32 256, i1 false, void ()* @__cxx_global_var_init, null, null, metadata !2, i32 3} ; [ DW_TAG_subprogram ] [line 3] [local] [def] [__cxx_global_var_init] 94 !5 = metadata !{i32 786473, metadata !1} ; [ DW_TAG_file_type ] [/tmp/templ.cpp] 95 !6 = metadata !{i32 786453, i32 0, i32 0, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, i32 0} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 96 !7 = metadata !{null} 97 !8 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"func<3, &glbl, y_impl, 1, 2>", metadata !"func<3, &glbl, y_impl, 1, 2>", metadata !"_Z4funcILi3EXadL_Z4glblEE6y_implJLi1ELi2EEEiv", i32 1, metadata !9, i1 false, i1 true, i32 0, i32 0, null, i32 256, i1 false, i32 ()* @_Z4funcILi3EXadL_Z4glblEE6y_implJLi1ELi2EEEiv, metadata !12, null, metadata !2, i32 1} ; [ DW_TAG_subprogram ] [line 1] [def] [func<3, &glbl, y_impl, 1, 2>] 98 !9 = metadata !{i32 786453, i32 0, i32 0, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !10, i32 0, i32 0} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 99 !10 = metadata !{metadata !11} 100 !11 = 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] 101 !12 = metadata !{metadata !13, metadata !14, metadata !16, metadata !17} 102 !13 = metadata !{i32 786480, null, metadata !"x", metadata !11, i32 3, null, i32 0, i32 0} ; [ DW_TAG_template_value_parameter ] 103 !14 = metadata !{i32 786480, null, metadata !"", metadata !15, i32* @glbl, null, i32 0, i32 0} ; [ DW_TAG_template_value_parameter ] 104 !15 = metadata !{i32 786447, null, null, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 0, metadata !11} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int] 105 !16 = metadata !{i32 803078, null, metadata !"y", null, metadata !"y_impl", null, i32 0, i32 0} ; [ DW_TAG_GNU_template_template_param ] 106 !17 = metadata !{i32 803079, null, metadata !"z", null, metadata !18, null, i32 0, i32 0} ; [ DW_TAG_GNU_template_parameter_pack ] 107 !18 = metadata !{metadata !19, metadata !20} 108 !19 = metadata !{i32 786480, null, metadata !"", metadata !11, i32 1, null, i32 0, i32 0} ; [ DW_TAG_template_value_parameter ] 109 !20 = metadata !{i32 786480, null, metadata !"", metadata !11, i32 2, null, i32 0, i32 0} ; [ DW_TAG_template_value_parameter ] 110 !21 = metadata !{i32 786478, metadata !1, metadata !5, metadata !"_GLOBAL__I_a", metadata !"_GLOBAL__I_a", metadata !"", i32 1, metadata !22, i1 true, i1 true, i32 0, i32 0, null, i32 64, i1 false, void ()* @_GLOBAL__I_a, null, null, metadata !2, i32 1} ; [ DW_TAG_subprogram ] [line 1] [local] [def] [_GLOBAL__I_a] 111 !22 = metadata !{i32 786453, i32 0, i32 0, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !2, i32 0, i32 0} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 112 !23 = metadata !{metadata !24, metadata !25} 113 !24 = metadata !{i32 786484, i32 0, null, metadata !"glbl", metadata !"glbl", metadata !"", metadata !5, i32 3, metadata !11, i32 0, i32 1, i32* @glbl, null} ; [ DW_TAG_variable ] [glbl] [line 3] [def] 114 !25 = metadata !{i32 786484, i32 0, null, metadata !"n", metadata !"n", metadata !"", metadata !5, i32 4, metadata !26, i32 0, i32 1, %"struct.y_impl<int>::nested"* @n, null} ; [ DW_TAG_variable ] [n] [line 4] [def] 115 !26 = metadata !{i32 786451, metadata !1, metadata !27, metadata !"nested", i32 2, i64 8, i64 8, i32 0, i32 0, null, metadata !30, i32 0, null, null} ; [ DW_TAG_structure_type ] [nested] [line 2, size 8, align 8, offset 0] [def] [from ] 116 !27 = metadata !{i32 786451, metadata !1, null, metadata !"y_impl<int>", i32 2, i64 8, i64 8, i32 0, i32 0, null, null, i32 0, null, metadata !28} ; [ DW_TAG_structure_type ] [y_impl<int>] [line 2, size 8, align 8, offset 0] [def] [from ] 117 !28 = metadata !{metadata !29} 118 !29 = metadata !{i32 786479, null, metadata !"", metadata !11, null, i32 0, i32 0} ; [ DW_TAG_template_type_parameter ] 119 !30 = metadata !{metadata !31} 120 !31 = metadata !{i32 786478, metadata !1, metadata !26, metadata !"nested", metadata !"nested", metadata !"", i32 2, metadata !32, i1 false, i1 false, i32 0, i32 0, null, i32 320, i1 false, null, null, i32 0, metadata !35, i32 2} ; [ DW_TAG_subprogram ] [line 2] [nested] 121 !32 = metadata !{i32 786453, i32 0, i32 0, metadata !"", i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !33, i32 0, i32 0} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] 122 !33 = metadata !{null, metadata !34} 123 !34 = metadata !{i32 786447, i32 0, i32 0, metadata !"", i32 0, i64 64, i64 64, i64 0, i32 1088, metadata !26} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from nested] 124 !35 = metadata !{i32 786468} 125 !36 = metadata !{i32 2, metadata !"Dwarf Version", i32 3} 126 !37 = metadata !{i32 3, i32 0, metadata !4, null} 127 !38 = metadata !{i32 1, i32 0, metadata !8, null} 128 !39 = metadata !{i32 1, i32 0, metadata !21, null} 129
