debug-info-template.cpp revision 18760453868e9b831b8575ae64119b07ab4dcdf5
1// RUN: %clang -S -emit-llvm -target x86_64-unknown_unknown -g %s -o - -std=c++11 | FileCheck %s 2 3// CHECK: [[EMPTY:![0-9]*]] = metadata !{i32 0} 4 5 6// CHECK: [[INT:![0-9]*]] = {{.*}} ; [ DW_TAG_base_type ] [int] 7// CHECK: metadata [[TCNESTED:![0-9]*]], i32 0, i32 1, %"struct.TC<unsigned int, 2, &glb, &foo::e, &foo::f, &func, tmpl_impl, 1, 2, 3>::nested"* @tci, null} ; [ DW_TAG_variable ] [tci] 8// CHECK: [[TCNESTED]] = metadata !{i32 {{[0-9]*}}, metadata !{{[0-9]*}}, metadata [[TC:![0-9]*]], {{.*}} ; [ DW_TAG_structure_type ] [nested] 9// CHECK: [[TC]] = {{.*}}, metadata [[TCARGS:![0-9]*]], null} ; [ DW_TAG_structure_type ] [TC<unsigned int, 2, &glb, &foo::e, &foo::f, &func, tmpl_impl, 1, 2, 3>] 10// CHECK: [[TCARGS]] = metadata !{metadata [[TCARG1:![0-9]*]], metadata [[TCARG2:![0-9]*]], metadata [[TCARG3:![0-9]*]], metadata [[TCARG4:![0-9]*]], metadata [[TCARG5:![0-9]*]], metadata [[TCARG6:![0-9]*]], metadata [[TCARG7:![0-9]*]], metadata [[TCARG8:![0-9]*]]} 11// 12// We seem to be missing file/line/col info on template value parameters - 13// metadata supports it but it's not populated. GCC doesn't emit it either, 14// perhaps we should just drop it from the metadata. 15// 16// CHECK: [[TCARG1]] = {{.*}}metadata !"T", metadata [[UINT:![0-9]*]], {{.*}} ; [ DW_TAG_template_type_parameter ] 17// CHECK: [[UINT:![0-9]*]] = {{.*}} ; [ DW_TAG_base_type ] [unsigned int] 18// CHECK: [[TCARG2]] = {{.*}}metadata !"", metadata [[UINT:![0-9]*]], i32 2, {{.*}} ; [ DW_TAG_template_value_parameter ] 19// CHECK: [[TCARG3]] = {{.*}}metadata !"x", metadata [[INTPTR:![0-9]*]], i32* @glb, {{.*}} ; [ DW_TAG_template_value_parameter ] 20// CHECK: [[INTPTR]] = {{.*}}, metadata [[INT]]} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from int] 21// CHECK: [[TCARG4]] = {{.*}}metadata !"a", metadata [[MEMINTPTR:![0-9]*]], i64 8, {{.*}} ; [ DW_TAG_template_value_parameter ] 22// CHECK: [[MEMINTPTR]] = {{.*}}, metadata [[FOO:![0-9]*]]} ; [ DW_TAG_ptr_to_member_type ] {{.*}}[from int] 23// 24// We could just emit a declaration of 'foo' here, rather than the entire 25// definition (same goes for any time we emit a member (function or data) 26// pointer type) 27// CHECK: [[FOO]] = {{.*}} ; [ DW_TAG_structure_type ] [foo] 28// CHECK: metadata !"f", metadata !"_ZN3foo1fEv", i32 {{[0-9]*}}, metadata [[FTYPE:![0-9]*]], 29// CHECK: [[FTYPE:![0-9]*]] = {{.*}}, metadata [[FARGS:![0-9]*]], i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] 30// CHECK: [[FARGS]] = metadata !{null, metadata [[FARG1:![0-9]*]]} 31// CHECK: [[FARG1]] = {{.*}} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from foo] 32// 33// Currently Clang emits the pointer-to-member-function value, but LLVM doesn't 34// use it (GCC doesn't emit a value for pointers to member functions either - so 35// it's not clear what, if any, format would be acceptable to GDB) 36// 37// CHECK: [[TCARG5]] = {{.*}}metadata !"b", metadata [[MEMFUNPTR:![0-9]*]], { i64, i64 } { i64 ptrtoint (void (%struct.foo*)* @_ZN3foo1fEv to i64), i64 0 }, {{.*}} ; [ DW_TAG_template_value_parameter ] 38// CHECK: [[MEMFUNPTR]] = {{.*}}, metadata [[FTYPE]], metadata [[FOO]]} ; [ DW_TAG_ptr_to_member_type ] 39// CHECK: [[TCARG6]] = {{.*}}metadata !"f", metadata [[FUNPTR:![0-9]*]], void ()* @_Z4funcv, {{.*}} ; [ DW_TAG_template_value_parameter ] 40// CHECK: [[FUNPTR]] = {{.*}}, metadata [[FUNTYPE:![0-9]*]]} ; [ DW_TAG_pointer_type ] 41// CHECK: [[FUNTYPE]] = {{.*}}, metadata [[FUNARGS:![0-9]*]], i32 0, null, null, null} ; [ DW_TAG_subroutine_type ] 42// CHECK: [[FUNARGS]] = metadata !{null} 43// CHECK: [[TCARG7]] = {{.*}}metadata !"tmpl", null, metadata !"tmpl_impl", {{.*}} ; [ DW_TAG_GNU_template_template_param ] 44// CHECK: [[TCARG8]] = {{.*}}metadata !"Is", null, metadata [[TCARG8_VALS:![0-9]*]], {{.*}} ; [ DW_TAG_GNU_template_parameter_pack ] 45// CHECK: [[TCARG8_VALS]] = metadata !{metadata [[TCARG8_1:![0-9]*]], metadata [[TCARG8_2:![0-9]*]], metadata [[TCARG8_3:![0-9]*]]} 46// CHECK: [[TCARG8_1]] = {{.*}}metadata !"", metadata [[INT]], i32 1, {{.*}} ; [ DW_TAG_template_value_parameter ] 47// CHECK: [[TCARG8_2]] = {{.*}}metadata !"", metadata [[INT]], i32 2, {{.*}} ; [ DW_TAG_template_value_parameter ] 48// CHECK: [[TCARG8_3]] = {{.*}}metadata !"", metadata [[INT]], i32 3, {{.*}} ; [ DW_TAG_template_value_parameter ] 49 50 51// CHECK: metadata [[TCNT:![0-9]*]], i32 0, i32 1, %struct.TC* @tcn, null} ; [ DW_TAG_variable ] [tcn] 52// CHECK: [[TCNT:![0-9]*]] = {{.*}}, metadata [[TCNARGS:![0-9]*]], null} ; [ DW_TAG_structure_type ] [TC<int, -3, nullptr, nullptr, nullptr, nullptr, tmpl_impl>] 53// CHECK: [[TCNARGS]] = metadata !{metadata [[TCNARG1:![0-9]*]], metadata [[TCNARG2:![0-9]*]], metadata [[TCNARG3:![0-9]*]], metadata [[TCNARG4:![0-9]*]], metadata [[TCNARG5:![0-9]*]], metadata [[TCNARG6:![0-9]*]], metadata [[TCARG7:![0-9]*]], metadata [[TCNARG8:![0-9]*]]} 54// CHECK: [[TCNARG1]] = {{.*}}metadata !"T", metadata [[INT]], {{.*}} ; [ DW_TAG_template_type_parameter ] 55// CHECK: [[TCNARG2]] = {{.*}}metadata !"", metadata [[INT]], i32 -3, {{.*}} ; [ DW_TAG_template_value_parameter ] 56// CHECK: [[TCNARG3]] = {{.*}}metadata !"x", metadata [[INTPTR]], i8 0, {{.*}} ; [ DW_TAG_template_value_parameter ] 57 58// The interesting null pointer: -1 for member data pointers (since they are 59// just an offset in an object, they can be zero and non-null for the first 60// member) 61 62// CHECK: [[TCNARG4]] = {{.*}}metadata !"a", metadata [[MEMINTPTR]], i64 -1, {{.*}} ; [ DW_TAG_template_value_parameter ] 63// 64// In some future iteration we could possibly emit the value of a null member 65// function pointer as '{ i64, i64 } zeroinitializer' as it may be handled 66// naturally from the LLVM CodeGen side once we decide how to handle non-null 67// member function pointers. For now, it's simpler just to emit the 'i8 0'. 68// 69// CHECK: [[TCNARG5]] = {{.*}}metadata !"b", metadata [[MEMFUNPTR]], i8 0, {{.*}} ; [ DW_TAG_template_value_parameter ] 70// CHECK: [[TCNARG6]] = {{.*}}metadata !"f", metadata [[FUNPTR]], i8 0, {{.*}} ; [ DW_TAG_template_value_parameter ] 71// CHECK: [[TCNARG8]] = {{.*}}metadata !"Is", null, metadata [[EMPTY]], {{.*}} ; [ DW_TAG_GNU_template_parameter_pack ] 72 73// CHECK: metadata [[PTOARGS:![0-9]*]], null} ; [ DW_TAG_structure_type ] [PaddingAtEndTemplate<&PaddedObj>] 74// CHECK: [[PTOARGS]] = metadata !{metadata [[PTOARG1:![0-9]*]]} 75// CHECK: [[PTOARG1]] = {{.*}}metadata !"", metadata [[CONST_PADDINGATEND_PTR:![0-9]*]], { i32, i8, [3 x i8] }* @PaddedObj, {{.*}} ; [ DW_TAG_template_value_parameter ] 76// CHECK: [[CONST_PADDINGATEND_PTR]] = {{.*}} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from PaddingAtEnd] 77struct foo { 78 char pad[8]; // make the member pointer to 'e' a bit more interesting (nonzero) 79 int e; 80 void f(); 81}; 82 83template<typename T, T, int *x, int foo::*a, void (foo::*b)(), void (*f)(), template<typename> class tmpl, int ...Is> 84struct TC { 85 struct nested { 86 }; 87}; 88 89int glb; 90void func(); 91 92template<typename> 93struct tmpl_impl { 94}; 95 96TC<unsigned, 2, &glb, &foo::e, &foo::f, &func, tmpl_impl, 1, 2, 3>::nested tci; 97TC<int, -3, nullptr, nullptr, nullptr, nullptr, tmpl_impl> tcn; 98 99struct PaddingAtEnd { 100 int i; 101 char c; 102}; 103 104PaddingAtEnd PaddedObj = {}; 105 106template <const PaddingAtEnd *> 107struct PaddingAtEndTemplate { 108}; 109 110PaddingAtEndTemplate<&PaddedObj> PaddedTemplateObj; 111