847f9cb0e8
Reland https://github.com/llvm/llvm-project/pull/75912 The differences of this PR between https://github.com/llvm/llvm-project/pull/75912 are: - Fixed a regression in `Decl::isInAnotherModuleUnit()` in DeclBase.cpp pointed by @mizvekov and add the corresponding test. - Fixed the regression in windows https://github.com/llvm/llvm-project/issues/97447. The changes are in `CodeGenModule::getVTableLinkage` from `clang/lib/CodeGen/CGVTables.cpp`. According to the feedbacks from MSVC devs, the linkage of vtables won't affected by modules. So I simply skipped the case for MSVC. Given this is more or less fundamental to the use of modules. I hope we can backport this to 19.x.
119 lines
3.1 KiB
C++
119 lines
3.1 KiB
C++
// REQUIRES: !system-windows
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//
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// RUN: rm -rf %t
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// RUN: mkdir -p %t
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// RUN: split-file %s %t
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//
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// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/Base.cppm \
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// RUN: -emit-module-interface -o %t/Base.pcm
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// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/Sub.cppm \
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// RUN: -emit-module-interface -o %t/Sub.pcm -fprebuilt-module-path=%t
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// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/Sub.pcm \
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// RUN: -emit-llvm -o %t/Sub.pcm -o - -fprebuilt-module-path=%t | \
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// RUN: FileCheck %t/Sub.cppm
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// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/main.cpp \
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// RUN: -emit-llvm -fprebuilt-module-path=%t -o - | FileCheck %t/main.cpp
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//
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// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/Mod.cppm \
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// RUN: -emit-module-interface -o %t/Mod.pcm
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// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/Mod.pcm \
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// RUN: -emit-llvm -o - | FileCheck %t/Mod.cppm
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// RUN: %clang_cc1 -std=c++20 -triple %itanium_abi_triple %t/Use.cpp \
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// RUN: -emit-llvm -fprebuilt-module-path=%t -o - | \
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// RUN: FileCheck %t/Use.cpp
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//--- Base.cppm
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export module Base;
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export template <class>
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class Base
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{
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public:
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constexpr Base();
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constexpr virtual ~Base();
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};
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template <class X>
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constexpr Base<X>::Base() = default;
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template <class X>
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constexpr Base<X>::~Base() = default;
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//--- Sub.cppm
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export module Sub;
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export import Base;
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export class Sub : public Base<int>
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{
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};
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// CHECK: @_ZTIW4Base4BaseIiE = {{.*}}linkonce_odr
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//--- main.cpp
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import Sub;
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int main()
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{
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Base<int> *b = new Sub();
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delete b;
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}
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// CHECK: @_ZTIW4Base4BaseIiE = {{.*}}linkonce_odr
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//--- Mod.cppm
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export module Mod;
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export class NonTemplate {
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public:
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virtual ~NonTemplate();
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};
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// CHECK: @_ZTIW3Mod11NonTemplate = {{.*}}constant
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export template <class C>
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class Template {
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public:
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virtual ~Template();
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};
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export template<>
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class Template<char> {
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public:
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virtual ~Template();
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};
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// CHECK: @_ZTIW3Mod8TemplateIcE = {{.*}}constant
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export template class Template<unsigned>;
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// CHECK: @_ZTIW3Mod8TemplateIjE = {{.*}}weak_odr
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export extern template class Template<double>;
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auto v = new Template<signed int>();
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// CHECK: @_ZTIW3Mod8TemplateIiE = {{.*}}linkonce_odr
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//--- Use.cpp
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import Mod;
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auto v1 = new NonTemplate();
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auto v2 = new Template<char>();
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auto v3 = new Template<unsigned>();
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auto v4 = new Template<double>();
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auto v5 = new Template<signed int>();
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auto v6 = new Template<NonTemplate>();
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// CHECK: @_ZTVW3Mod11NonTemplate = {{.*}}external
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// CHECK: @_ZTVW3Mod8TemplateIcE = {{.*}}external
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// CHECK: @_ZTVW3Mod8TemplateIjE = {{.*}}weak_odr
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// CHECK: @_ZTSW3Mod8TemplateIjE = {{.*}}weak_odr
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// CHECK: @_ZTIW3Mod8TemplateIjE = {{.*}}weak_odr
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// CHECK: @_ZTVW3Mod8TemplateIdE = {{.*}}external
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// CHECK: @_ZTVW3Mod8TemplateIiE = {{.*}}linkonce_odr
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// CHECK: @_ZTSW3Mod8TemplateIiE = {{.*}}linkonce_odr
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// CHECK: @_ZTIW3Mod8TemplateIiE = {{.*}}linkonce_odr
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// CHECK: @_ZTVW3Mod8TemplateIS_11NonTemplateE = {{.*}}linkonce_odr
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// CHECK: @_ZTSW3Mod8TemplateIS_11NonTemplateE = {{.*}}linkonce_odr
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// CHECK: @_ZTIW3Mod8TemplateIS_11NonTemplateE = {{.*}}linkonce_odr
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