D->getType().isConstant(Context) &&
isExternallyVisible(D->getLinkageAndVisibility().getLinkage()))
GV->setSection(".cp.rodata");
-
- // Check if we a have a const declaration with an initializer, we may be
- // able to emit it as available_externally to expose it's value to the
- // optimizer.
- if (Context.getLangOpts().CPlusPlus && GV->hasExternalLinkage() &&
- D->getType().isConstQualified() && !GV->hasInitializer() &&
- !D->hasDefinition() && D->hasInit() && !D->hasAttr<DLLImportAttr>()) {
- const auto *Record =
- Context.getBaseElementType(D->getType())->getAsCXXRecordDecl();
- bool HasMutableFields = Record && Record->hasMutableFields();
- if (!HasMutableFields) {
- const VarDecl *InitDecl;
- const Expr *InitExpr = D->getAnyInitializer(InitDecl);
- if (InitExpr) {
- GV->setConstant(true);
- GV->setLinkage(llvm::GlobalValue::AvailableExternallyLinkage);
- ConstantEmitter emitter(*this);
- GV->setInitializer(emitter.tryEmitForInitializer(*InitDecl));
- emitter.finalize(GV);
- }
- }
- }
}
auto ExpectedAS =
+++ /dev/null
-// RUN: %clang_cc1 -std=c++11 %s -emit-llvm -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK --check-prefix=CXX11
-// RUN: %clang_cc1 -std=c++1z %s -emit-llvm -o - -triple x86_64-linux-gnu | FileCheck %s --check-prefix=CHECK --check-prefix=CXX17
-
-struct A {
- static const int Foo = 123;
-};
-// CHECK: @_ZN1A3FooE = constant i32 123, align 4
-const int *p = &A::Foo; // emit available_externally
-const int A::Foo; // convert to full definition
-
-struct Bar {
- int b;
-};
-
-struct MutableBar {
- mutable int b;
-};
-
-struct Foo {
- // CXX11: @_ZN3Foo21ConstexprStaticMemberE = available_externally constant i32 42,
- // CXX17: @_ZN3Foo21ConstexprStaticMemberE = linkonce_odr constant i32 42,
- static constexpr int ConstexprStaticMember = 42;
- // CHECK: @_ZN3Foo17ConstStaticMemberE = available_externally constant i32 43,
- static const int ConstStaticMember = 43;
-
- // CXX11: @_ZN3Foo23ConstStaticStructMemberE = available_externally constant %struct.Bar { i32 44 },
- // CXX17: @_ZN3Foo23ConstStaticStructMemberE = linkonce_odr constant %struct.Bar { i32 44 },
- static constexpr Bar ConstStaticStructMember = {44};
-
- // CXX11: @_ZN3Foo34ConstexprStaticMutableStructMemberE = external global %struct.MutableBar,
- // CXX17: @_ZN3Foo34ConstexprStaticMutableStructMemberE = linkonce_odr global %struct.MutableBar { i32 45 },
- static constexpr MutableBar ConstexprStaticMutableStructMember = {45};
-};
-// CHECK: @_ZL15ConstStaticexpr = internal constant i32 46,
-static constexpr int ConstStaticexpr = 46;
-// CHECK: @_ZL9ConstExpr = internal constant i32 46, align 4
-static const int ConstExpr = 46;
-
-// CHECK: @_ZL21ConstexprStaticStruct = internal constant %struct.Bar { i32 47 },
-static constexpr Bar ConstexprStaticStruct = {47};
-
-// CHECK: @_ZL28ConstexprStaticMutableStruct = internal global %struct.MutableBar { i32 48 },
-static constexpr MutableBar ConstexprStaticMutableStruct = {48};
-
-void use(const int &);
-void foo() {
- use(Foo::ConstexprStaticMember);
- use(Foo::ConstStaticMember);
- use(Foo::ConstStaticStructMember.b);
- use(Foo::ConstexprStaticMutableStructMember.b);
- use(ConstStaticexpr);
- use(ConstExpr);
- use(ConstexprStaticStruct.b);
- use(ConstexprStaticMutableStruct.b);
-}