ba6fdc57b4
Before this patch, clang would emit a (module-)forward declaration for template instantiations that are not anchored by an explicit template instantiation, but still are guaranteed to be available in an imported module. Unfortunately detecting the owning module doesn't reliably work when local submodule visibility is enabled and the template is inside a cross-module namespace. This make clang debuggable again with -gmodules and LSV enabled. rdar://problem/41552377 llvm-svn: 345109
222 lines
9.0 KiB
C++
222 lines
9.0 KiB
C++
// RUN: rm -rf %t
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// Test that only forward declarations are emitted for types defined in modules.
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// Modules:
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// RUN: %clang_cc1 -x objective-c++ -std=c++11 -debug-info-kind=standalone \
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// RUN: -dwarf-ext-refs -fmodules \
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// RUN: -fmodule-format=obj -fimplicit-module-maps -DMODULES \
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// RUN: -triple %itanium_abi_triple \
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// RUN: -fmodules-cache-path=%t %s -I %S/Inputs -I %t -emit-llvm -o %t-mod.ll
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// RUN: cat %t-mod.ll | FileCheck %s
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// PCH:
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// RUN: %clang_cc1 -x c++ -std=c++11 -fmodule-format=obj -emit-pch -I%S/Inputs \
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// RUN: -triple %itanium_abi_triple \
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// RUN: -o %t.pch %S/Inputs/DebugCXX.h
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// RUN: %clang_cc1 -std=c++11 -debug-info-kind=standalone \
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// RUN: -dwarf-ext-refs -fmodule-format=obj \
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// RUN: -triple %itanium_abi_triple \
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// RUN: -include-pch %t.pch %s -emit-llvm -o %t-pch.ll
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// RUN: cat %t-pch.ll | FileCheck %s
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// RUN: cat %t-pch.ll | FileCheck %s --check-prefix=CHECK-PCH
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#ifdef MODULES
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@import DebugCXX;
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#endif
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using DebugCXX::Struct;
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Struct s;
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DebugCXX::Enum e;
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// Template instantiations.
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DebugCXX::Template<long> implicitTemplate;
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DebugCXX::Template<int> explicitTemplate;
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DebugCXX::FloatInstantiation typedefTemplate;
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DebugCXX::B anchoredTemplate;
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int Struct::static_member = -1;
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enum {
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e3 = -1
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} conflicting_uid = e3;
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auto anon_enum = DebugCXX::e2;
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char _anchor = anon_enum + conflicting_uid;
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TypedefUnion tdu;
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TypedefEnum tde;
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TypedefStruct tds;
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TypedefTemplate tdt;
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Template1<int> explicitTemplate1;
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template <class T> class FwdDeclTemplate { T t; };
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TypedefFwdDeclTemplate tdfdt;
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InAnonymousNamespace anon;
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// Types that are forward-declared in the module and defined here.
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struct PureFwdDecl { int i; };
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PureFwdDecl definedLocally;
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struct Specialized<int>::Member { int i; };
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struct Specialized<int>::Member definedLocally2;
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template <class T> struct FwdDeclTemplateMember<T>::Member { T t; };
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TypedefFwdDeclTemplateMember tdfdtm;
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SpecializedBase definedLocally3;
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extern template class WithSpecializedBase<int>;
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WithSpecializedBase<int> definedLocally4;
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void foo() {
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anon.i = GlobalStruct.i = GlobalUnion.i = GlobalEnum;
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A a;
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Virtual virt;
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}
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// CHECK: ![[CPP:.*]] = !DIFile(filename: {{.*}}ExtDebugInfo.cpp"
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// CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, name: "Enum",
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// CHECK-SAME: scope: ![[NS:[0-9]+]],
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// CHECK-SAME: flags: DIFlagFwdDecl,
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// CHECK-SAME: identifier: "_ZTSN8DebugCXX4EnumE")
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// CHECK: ![[NS]] = !DINamespace(name: "DebugCXX", scope: ![[MOD:[0-9]+]])
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// CHECK: ![[MOD]] = !DIModule(scope: null, name: {{.*}}DebugCXX
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// This type is not anchored in the module by an explicit template instantiation.
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// CHECK: !DICompositeType(tag: DW_TAG_class_type,
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// CHECK-SAME: name: "Template<long, DebugCXX::traits<long> >",
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// CHECK-SAME: scope: ![[NS]],
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// CHECK-SAME: elements:
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// CHECK-SAME: identifier: "_ZTSN8DebugCXX8TemplateIlNS_6traitsIlEEEE")
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// This type is anchored in the module by an explicit template instantiation.
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// CHECK: !DICompositeType(tag: DW_TAG_class_type,
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// CHECK-SAME: name: "Template<int, DebugCXX::traits<int> >",
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// CHECK-SAME: scope: ![[NS]],
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// CHECK-SAME: flags: DIFlagFwdDecl,
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// CHECK-SAME: identifier: "_ZTSN8DebugCXX8TemplateIiNS_6traitsIiEEEE")
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// This type isn't, however, even with standalone non-module debug info this
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// type is a forward declaration.
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// CHECK-NOT: !DICompositeType(tag: DW_TAG_structure_type, name: "traits<int>",
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// This one isn't.
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// CHECK: !DICompositeType(tag: DW_TAG_class_type,
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// CHECK-SAME: name: "Template<float, DebugCXX::traits<float> >",
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// CHECK-SAME: scope: ![[NS]],
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// CHECK-SAME: elements:
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// CHECK-SAME: templateParams:
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// CHECK-SAME: identifier: "_ZTSN8DebugCXX8TemplateIfNS_6traitsIfEEEE")
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// This type is anchored in the module by an explicit template instantiation.
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "traits<float>",
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// CHECK-SAME: flags: DIFlagFwdDecl,
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// CHECK-SAME: identifier: "_ZTSN8DebugCXX6traitsIfEE")
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// This type is anchored in the module via a function argument,
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// but we don't know this (yet).
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// CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "A<void>",
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// CHECK-SAME: scope: ![[NS]],
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// CHECK-SAME: elements:
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// CHECK-SAME: identifier: "_ZTSN8DebugCXX1AIJvEEE")
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// CHECK: !DIDerivedType(tag: DW_TAG_member, name: "static_member",
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// CHECK-SAME: scope: ![[STRUCT:[0-9]*]]
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// CHECK: ![[STRUCT]] = !DICompositeType(tag: DW_TAG_structure_type, name: "Struct",
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// CHECK-SAME: scope: ![[NS]],
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// CHECK-SAME: flags: DIFlagFwdDecl,
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// CHECK-SAME: identifier: "_ZTSN8DebugCXX6StructE")
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// CHECK: !DICompositeType(tag: DW_TAG_union_type,
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// CHECK-SAME: flags: DIFlagFwdDecl,
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// CHECK-SAME: identifier: "_ZTS12TypedefUnion")
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// CHECK: !DICompositeType(tag: DW_TAG_enumeration_type,
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// CHECK-SAME: flags: DIFlagFwdDecl,
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// CHECK-SAME: identifier: "_ZTS11TypedefEnum")
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type,
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// CHECK-SAME: flags: DIFlagFwdDecl,
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// CHECK-SAME: identifier: "_ZTS13TypedefStruct")
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// This one isn't.
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// CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "Template1<void *>",
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// CHECK-SAME: elements:
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// CHECK-SAME: templateParams:
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// CHECK-SAME: identifier: "_ZTS9Template1IPvE")
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// This type is anchored in the module by an explicit template instantiation.
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// CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "Template1<int>",
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// CHECK-SAME: flags: DIFlagFwdDecl,
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// CHECK-SAME: identifier: "_ZTS9Template1IiE")
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// CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "FwdDeclTemplate<int>",
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// CHECK-SAME: elements:
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// CHECK-SAME: templateParams:
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// CHECK-SAME: identifier: "_ZTS15FwdDeclTemplateIiE")
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// This type is defined locally and forward-declared in the module.
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "PureFwdDecl",
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// CHECK-SAME: elements:
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// CHECK-SAME: identifier: "_ZTS11PureFwdDecl")
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// This type is defined locally and forward-declared in the module.
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "Member",
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// CHECK-SAME: elements:
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// CHECK-SAME: identifier: "_ZTSN11SpecializedIiE6MemberE")
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// This type is defined locally and forward-declared in the module.
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "Member",
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// CHECK-SAME: elements:
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// CHECK-SAME: identifier: "_ZTSN21FwdDeclTemplateMemberIiE6MemberE")
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// This type is defined locally and forward-declared in the module.
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// CHECK: !DIDerivedType(tag: DW_TAG_typedef, name: "SpecializedBase",
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// CHECK-SAME: baseType: ![[SPECIALIZEDBASE:.*]])
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// CHECK: ![[SPECIALIZEDBASE]] =
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// CHECK-SAME: !DICompositeType(tag: DW_TAG_class_type,
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// CHECK-SAME: name: "WithSpecializedBase<float>",
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// CHECK-SAME: elements:
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// CHECK-SAME: identifier: "_ZTS19WithSpecializedBaseIfE")
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// This type is explicitly specialized locally.
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// CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "WithSpecializedBase<int>",
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// CHECK-SAME: elements:
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// CHECK-SAME: identifier: "_ZTS19WithSpecializedBaseIiE")
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// CHECK: !DIGlobalVariable(name: "anon_enum", {{.*}}, type: ![[ANON_ENUM:[0-9]+]]
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// CHECK: !DICompositeType(tag: DW_TAG_enumeration_type, scope: ![[NS]],
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// CHECK-SAME: line: 19
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// CHECK: !DIGlobalVariable(name: "GlobalUnion",
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// CHECK-SAME: type: ![[GLOBAL_UNION:[0-9]+]]
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// CHECK: ![[GLOBAL_UNION]] = distinct !DICompositeType(tag: DW_TAG_union_type,
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// CHECK-SAME: elements: !{{[0-9]+}})
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// CHECK: !DIGlobalVariable(name: "GlobalStruct",
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// CHECK-SAME: type: ![[GLOBAL_STRUCT:[0-9]+]]
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// CHECK: ![[GLOBAL_STRUCT]] = distinct !DICompositeType(tag: DW_TAG_structure_type,
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// CHECK-SAME: elements: !{{[0-9]+}})
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// CHECK: !DIGlobalVariable(name: "anon",
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// CHECK-SAME: type: ![[GLOBAL_ANON:[0-9]+]]
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// CHECK: ![[GLOBAL_ANON]] = !DICompositeType(tag: DW_TAG_structure_type,
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// CHECK-SAME: name: "InAnonymousNamespace", {{.*}}DIFlagFwdDecl)
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// CHECK: !DIImportedEntity(tag: DW_TAG_imported_declaration, scope: !{{[0-9]+}}, entity: ![[STRUCT]], file: ![[CPP]], line: 27)
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// CHECK: !DICompileUnit(
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// CHECK-SAME: splitDebugFilename:
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// CHECK-SAME: dwoId:
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// CHECK-PCH: !DICompileUnit({{.*}}splitDebugFilename:
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// CHECK-PCH: dwoId: 18446744073709551614
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// CHECK: !DICompositeType(tag: DW_TAG_class_type, name: "A",
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// CHECK-SAME: DIFlagFwdDecl, identifier: "_ZTS1A")
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// There is a full definition of the type available in the module.
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// CHECK: !DICompositeType(tag: DW_TAG_structure_type, name: "Virtual",
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// CHECK-SAME: DIFlagFwdDecl, identifier: "_ZTS7Virtual")
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