forked from OSchip/llvm-project
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
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//===--- CGDeclCXX.cpp - Emit LLVM Code for C++ declarations --------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This contains code dealing with code generation of C++ declarations
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//
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//===----------------------------------------------------------------------===//
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#include "CodeGenFunction.h"
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using namespace clang;
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using namespace CodeGen;
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void CodeGenFunction::EmitCXXGlobalVarDeclInit(const VarDecl &D,
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llvm::Constant *DeclPtr) {
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assert(D.hasGlobalStorage() &&
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"VarDecl must have global storage!");
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const Expr *Init = D.getInit();
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QualType T = D.getType();
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bool isVolatile = getContext().getCanonicalType(T).isVolatileQualified();
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if (T->isReferenceType()) {
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ErrorUnsupported(Init, "global variable that binds to a reference");
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} else if (!hasAggregateLLVMType(T)) {
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llvm::Value *V = EmitScalarExpr(Init);
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EmitStoreOfScalar(V, DeclPtr, isVolatile, T);
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} else if (T->isAnyComplexType()) {
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EmitComplexExprIntoAddr(Init, DeclPtr, isVolatile);
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} else {
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EmitAggExpr(Init, DeclPtr, isVolatile);
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// Avoid generating destructor(s) for initialized objects.
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if (!isa<CXXConstructExpr>(Init))
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return;
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const ConstantArrayType *Array = getContext().getAsConstantArrayType(T);
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if (Array)
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T = getContext().getBaseElementType(Array);
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if (const RecordType *RT = T->getAs<RecordType>()) {
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CXXRecordDecl *RD = cast<CXXRecordDecl>(RT->getDecl());
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if (!RD->hasTrivialDestructor()) {
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llvm::Constant *DtorFn;
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if (Array) {
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DtorFn = CodeGenFunction(CGM).GenerateCXXAggrDestructorHelper(
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RD->getDestructor(getContext()),
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Array, DeclPtr);
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DeclPtr =
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llvm::Constant::getNullValue(llvm::Type::getInt8PtrTy(VMContext));
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}
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else
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DtorFn = CGM.GetAddrOfCXXDestructor(RD->getDestructor(getContext()),
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Dtor_Complete);
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EmitCXXGlobalDtorRegistration(DtorFn, DeclPtr);
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}
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}
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}
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}
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