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Refactor some code into a new findMaterializedTemporary function. 

llvm-svn: 166849
This commit is contained in:
Rafael Espindola 2012-10-27 00:43:14 +00:00
parent b413676cd7
commit b9d75ca84b
1 changed files with 32 additions and 25 deletions
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51
clang/lib/CodeGen/CGExpr.cpp
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@ -227,6 +227,27 @@ CreateReferenceTemporary(CodeGenFunction &CGF, QualType Type,
return CGF.CreateMemTemp(Type, "ref.tmp");
}
static const Expr *
findMaterializedTemporary(const Expr *E, const MaterializeTemporaryExpr *&MTE) {
// Look through single-element init lists that claim to be lvalues. They're
// just syntactic wrappers in this case.
if (const InitListExpr *ILE = dyn_cast<InitListExpr>(E)) {
if (ILE->getNumInits() == 1 && ILE->isGLValue())
E = ILE->getInit(0);
}
// Look through expressions for materialized temporaries (for now).
if (const MaterializeTemporaryExpr *M
= dyn_cast<MaterializeTemporaryExpr>(E)) {
MTE = M;
E = M->GetTemporaryExpr();
}
if (const CXXDefaultArgExpr *DAE = dyn_cast<CXXDefaultArgExpr>(E))
E = DAE->getExpr();
return E;
}
static const Expr *
skipRValueSubobjectAdjustments(const Expr *E,
SmallVectorImpl<SubobjectAdjustment> &Adjustments) {
@ -279,31 +300,17 @@ EmitExprForReferenceBinding(CodeGenFunction &CGF, const Expr *E,
const CXXDestructorDecl *&ReferenceTemporaryDtor,
QualType &ObjCARCReferenceLifetimeType,
const NamedDecl *InitializedDecl) {
// Look through single-element init lists that claim to be lvalues. They're
// just syntactic wrappers in this case.
if (const InitListExpr *ILE = dyn_cast<InitListExpr>(E)) {
if (ILE->getNumInits() == 1 && ILE->isGLValue())
E = ILE->getInit(0);
}
// Look through expressions for materialized temporaries (for now).
if (const MaterializeTemporaryExpr *M
= dyn_cast<MaterializeTemporaryExpr>(E)) {
const MaterializeTemporaryExpr *M = NULL;
E = findMaterializedTemporary(E, M);
// Objective-C++ ARC:
// If we are binding a reference to a temporary that has ownership, we
// need to perform retain/release operations on the temporary.
if (CGF.getContext().getLangOpts().ObjCAutoRefCount &&
E->getType()->isObjCLifetimeType() &&
(E->getType().getObjCLifetime() == Qualifiers::OCL_Strong ||
E->getType().getObjCLifetime() == Qualifiers::OCL_Weak ||
E->getType().getObjCLifetime() == Qualifiers::OCL_Autoreleasing))
ObjCARCReferenceLifetimeType = E->getType();
E = M->GetTemporaryExpr();
}
if (const CXXDefaultArgExpr *DAE = dyn_cast<CXXDefaultArgExpr>(E))
E = DAE->getExpr();
if (M && CGF.getContext().getLangOpts().ObjCAutoRefCount &&
M->getType()->isObjCLifetimeType() &&
(M->getType().getObjCLifetime() == Qualifiers::OCL_Strong ||
M->getType().getObjCLifetime() == Qualifiers::OCL_Weak ||
M->getType().getObjCLifetime() == Qualifiers::OCL_Autoreleasing))
ObjCARCReferenceLifetimeType = M->getType();
if (const ExprWithCleanups *EWC = dyn_cast<ExprWithCleanups>(E)) {
CGF.enterFullExpression(EWC);