d283fc4f9d
Summary:
D76801 caused some regressions in debuginfo compatibility by changing how
certain functions were named.
For CodeView we try to mirror MSVC exactly: this was fixed in a549c0d004
For DWARF the situation is murkier. Per David Blaikie:
> In general DWARF doesn't specify this at all.
> [...]
> This isn't the only naming divergence between GCC and Clang
Nevertheless, including the space seems to provide better compatibility with
GCC and GDB. E.g. cpexprs.cc in the GDB testsuite requires this formatting.
And there was no particular desire to change the printing of names in debug
info in the first place (just in diagnostics and other more user-facing text).
Fixes PR46052
Reviewers: dblaikie, labath
Subscribers: aprantl, cfe-commits, dyung
Tags: #clang
Differential Revision: https://reviews.llvm.org/D80554
223 lines
9.0 KiB
C++
223 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
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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
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// CHECK-SAME: identifier: "_ZTS7Virtual")
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