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-rw-r--r--lib/AST/ExprCXX.cpp176
1 files changed, 170 insertions, 6 deletions
diff --git a/lib/AST/ExprCXX.cpp b/lib/AST/ExprCXX.cpp
index b30f785ba8f5..904928bdf286 100644
--- a/lib/AST/ExprCXX.cpp
+++ b/lib/AST/ExprCXX.cpp
@@ -58,6 +58,76 @@ bool CXXOperatorCallExpr::isInfixBinaryOp() const {
}
}
+CXXRewrittenBinaryOperator::DecomposedForm
+CXXRewrittenBinaryOperator::getDecomposedForm() const {
+ DecomposedForm Result = {};
+ const Expr *E = getSemanticForm()->IgnoreImplicit();
+
+ // Remove an outer '!' if it exists (only happens for a '!=' rewrite).
+ bool SkippedNot = false;
+ if (auto *NotEq = dyn_cast<UnaryOperator>(E)) {
+ assert(NotEq->getOpcode() == UO_LNot);
+ E = NotEq->getSubExpr()->IgnoreImplicit();
+ SkippedNot = true;
+ }
+
+ // Decompose the outer binary operator.
+ if (auto *BO = dyn_cast<BinaryOperator>(E)) {
+ assert(!SkippedNot || BO->getOpcode() == BO_EQ);
+ Result.Opcode = SkippedNot ? BO_NE : BO->getOpcode();
+ Result.LHS = BO->getLHS();
+ Result.RHS = BO->getRHS();
+ Result.InnerBinOp = BO;
+ } else if (auto *BO = dyn_cast<CXXOperatorCallExpr>(E)) {
+ assert(!SkippedNot || BO->getOperator() == OO_EqualEqual);
+ assert(BO->isInfixBinaryOp());
+ switch (BO->getOperator()) {
+ case OO_Less: Result.Opcode = BO_LT; break;
+ case OO_LessEqual: Result.Opcode = BO_LE; break;
+ case OO_Greater: Result.Opcode = BO_GT; break;
+ case OO_GreaterEqual: Result.Opcode = BO_GE; break;
+ case OO_Spaceship: Result.Opcode = BO_Cmp; break;
+ case OO_EqualEqual: Result.Opcode = SkippedNot ? BO_NE : BO_EQ; break;
+ default: llvm_unreachable("unexpected binop in rewritten operator expr");
+ }
+ Result.LHS = BO->getArg(0);
+ Result.RHS = BO->getArg(1);
+ Result.InnerBinOp = BO;
+ } else {
+ llvm_unreachable("unexpected rewritten operator form");
+ }
+
+ // Put the operands in the right order for == and !=, and canonicalize the
+ // <=> subexpression onto the LHS for all other forms.
+ if (isReversed())
+ std::swap(Result.LHS, Result.RHS);
+
+ // If this isn't a spaceship rewrite, we're done.
+ if (Result.Opcode == BO_EQ || Result.Opcode == BO_NE)
+ return Result;
+
+ // Otherwise, we expect a <=> to now be on the LHS.
+ E = Result.LHS->IgnoreImplicit();
+ if (auto *BO = dyn_cast<BinaryOperator>(E)) {
+ assert(BO->getOpcode() == BO_Cmp);
+ Result.LHS = BO->getLHS();
+ Result.RHS = BO->getRHS();
+ Result.InnerBinOp = BO;
+ } else if (auto *BO = dyn_cast<CXXOperatorCallExpr>(E)) {
+ assert(BO->getOperator() == OO_Spaceship);
+ Result.LHS = BO->getArg(0);
+ Result.RHS = BO->getArg(1);
+ Result.InnerBinOp = BO;
+ } else {
+ llvm_unreachable("unexpected rewritten operator form");
+ }
+
+ // Put the comparison operands in the right order.
+ if (isReversed())
+ std::swap(Result.LHS, Result.RHS);
+ return Result;
+}
+
bool CXXTypeidExpr::isPotentiallyEvaluated() const {
if (isTypeOperand())
return false;
@@ -124,6 +194,8 @@ CXXNewExpr::CXXNewExpr(bool IsGlobalNew, FunctionDecl *OperatorNew,
if (ArraySize) {
if (Expr *SizeExpr = *ArraySize) {
+ if (SizeExpr->isValueDependent())
+ ExprBits.ValueDependent = true;
if (SizeExpr->isInstantiationDependent())
ExprBits.InstantiationDependent = true;
if (SizeExpr->containsUnexpandedParameterPack())
@@ -134,6 +206,8 @@ CXXNewExpr::CXXNewExpr(bool IsGlobalNew, FunctionDecl *OperatorNew,
}
if (Initializer) {
+ if (Initializer->isValueDependent())
+ ExprBits.ValueDependent = true;
if (Initializer->isInstantiationDependent())
ExprBits.InstantiationDependent = true;
if (Initializer->containsUnexpandedParameterPack())
@@ -143,6 +217,8 @@ CXXNewExpr::CXXNewExpr(bool IsGlobalNew, FunctionDecl *OperatorNew,
}
for (unsigned I = 0; I != PlacementArgs.size(); ++I) {
+ if (PlacementArgs[I]->isValueDependent())
+ ExprBits.ValueDependent = true;
if (PlacementArgs[I]->isInstantiationDependent())
ExprBits.InstantiationDependent = true;
if (PlacementArgs[I]->containsUnexpandedParameterPack())
@@ -245,7 +321,7 @@ QualType CXXDeleteExpr::getDestroyedType() const {
if (ArgType->isDependentType() && !ArgType->isPointerType())
return QualType();
- return ArgType->getAs<PointerType>()->getPointeeType();
+ return ArgType->castAs<PointerType>()->getPointeeType();
}
// CXXPseudoDestructorExpr
@@ -651,6 +727,13 @@ Expr *CXXMemberCallExpr::getImplicitObjectArgument() const {
return nullptr;
}
+QualType CXXMemberCallExpr::getObjectType() const {
+ QualType Ty = getImplicitObjectArgument()->getType();
+ if (Ty->isPointerType())
+ Ty = Ty->getPointeeType();
+ return Ty;
+}
+
CXXMethodDecl *CXXMemberCallExpr::getMethodDecl() const {
if (const auto *MemExpr = dyn_cast<MemberExpr>(getCallee()->IgnoreParens()))
return cast<CXXMethodDecl>(MemExpr->getMemberDecl());
@@ -1205,6 +1288,11 @@ CXXMethodDecl *LambdaExpr::getCallOperator() const {
return Record->getLambdaCallOperator();
}
+FunctionTemplateDecl *LambdaExpr::getDependentCallOperator() const {
+ CXXRecordDecl *Record = getLambdaClass();
+ return Record->getDependentLambdaCallOperator();
+}
+
TemplateParameterList *LambdaExpr::getTemplateParameterList() const {
CXXRecordDecl *Record = getLambdaClass();
return Record->getGenericLambdaTemplateParameterList();
@@ -1494,11 +1582,8 @@ CXXRecordDecl *UnresolvedMemberExpr::getNamingClass() {
// Otherwise the naming class must have been the base class.
else {
QualType BaseType = getBaseType().getNonReferenceType();
- if (isArrow()) {
- const auto *PT = BaseType->getAs<PointerType>();
- assert(PT && "base of arrow member access is not pointer");
- BaseType = PT->getPointeeType();
- }
+ if (isArrow())
+ BaseType = BaseType->castAs<PointerType>()->getPointeeType();
Record = BaseType->getAsCXXRecordDecl();
assert(Record && "base of member expression does not name record");
@@ -1665,3 +1750,82 @@ CUDAKernelCallExpr *CUDAKernelCallExpr::CreateEmpty(const ASTContext &Ctx,
alignof(CUDAKernelCallExpr));
return new (Mem) CUDAKernelCallExpr(NumArgs, Empty);
}
+
+ConceptSpecializationExpr::ConceptSpecializationExpr(ASTContext &C,
+ NestedNameSpecifierLoc NNS, SourceLocation TemplateKWLoc,
+ SourceLocation ConceptNameLoc, NamedDecl *FoundDecl,
+ ConceptDecl *NamedConcept, const ASTTemplateArgumentListInfo *ArgsAsWritten,
+ ArrayRef<TemplateArgument> ConvertedArgs, Optional<bool> IsSatisfied)
+ : Expr(ConceptSpecializationExprClass, C.BoolTy, VK_RValue, OK_Ordinary,
+ /*TypeDependent=*/false,
+ // All the flags below are set in setTemplateArguments.
+ /*ValueDependent=*/!IsSatisfied.hasValue(),
+ /*InstantiationDependent=*/false,
+ /*ContainsUnexpandedParameterPacks=*/false),
+ NestedNameSpec(NNS), TemplateKWLoc(TemplateKWLoc),
+ ConceptNameLoc(ConceptNameLoc), FoundDecl(FoundDecl),
+ NamedConcept(NamedConcept, IsSatisfied ? *IsSatisfied : true),
+ NumTemplateArgs(ConvertedArgs.size()) {
+
+ setTemplateArguments(ArgsAsWritten, ConvertedArgs);
+}
+
+ConceptSpecializationExpr::ConceptSpecializationExpr(EmptyShell Empty,
+ unsigned NumTemplateArgs)
+ : Expr(ConceptSpecializationExprClass, Empty),
+ NumTemplateArgs(NumTemplateArgs) { }
+
+void ConceptSpecializationExpr::setTemplateArguments(
+ const ASTTemplateArgumentListInfo *ArgsAsWritten,
+ ArrayRef<TemplateArgument> Converted) {
+ assert(Converted.size() == NumTemplateArgs);
+ assert(!this->ArgsAsWritten && "setTemplateArguments can only be used once");
+ this->ArgsAsWritten = ArgsAsWritten;
+ std::uninitialized_copy(Converted.begin(), Converted.end(),
+ getTrailingObjects<TemplateArgument>());
+ bool IsInstantiationDependent = false;
+ bool ContainsUnexpandedParameterPack = false;
+ for (const TemplateArgumentLoc& LocInfo : ArgsAsWritten->arguments()) {
+ if (LocInfo.getArgument().isInstantiationDependent())
+ IsInstantiationDependent = true;
+ if (LocInfo.getArgument().containsUnexpandedParameterPack())
+ ContainsUnexpandedParameterPack = true;
+ if (ContainsUnexpandedParameterPack && IsInstantiationDependent)
+ break;
+ }
+
+ // Currently guaranteed by the fact concepts can only be at namespace-scope.
+ assert(!NestedNameSpec ||
+ (!NestedNameSpec.getNestedNameSpecifier()->isInstantiationDependent() &&
+ !NestedNameSpec.getNestedNameSpecifier()
+ ->containsUnexpandedParameterPack()));
+ setInstantiationDependent(IsInstantiationDependent);
+ setContainsUnexpandedParameterPack(ContainsUnexpandedParameterPack);
+ assert((!isValueDependent() || isInstantiationDependent()) &&
+ "should not be value-dependent");
+}
+
+ConceptSpecializationExpr *
+ConceptSpecializationExpr::Create(ASTContext &C, NestedNameSpecifierLoc NNS,
+ SourceLocation TemplateKWLoc,
+ SourceLocation ConceptNameLoc,
+ NamedDecl *FoundDecl,
+ ConceptDecl *NamedConcept,
+ const ASTTemplateArgumentListInfo *ArgsAsWritten,
+ ArrayRef<TemplateArgument> ConvertedArgs,
+ Optional<bool> IsSatisfied) {
+ void *Buffer = C.Allocate(totalSizeToAlloc<TemplateArgument>(
+ ConvertedArgs.size()));
+ return new (Buffer) ConceptSpecializationExpr(C, NNS, TemplateKWLoc,
+ ConceptNameLoc, FoundDecl,
+ NamedConcept, ArgsAsWritten,
+ ConvertedArgs, IsSatisfied);
+}
+
+ConceptSpecializationExpr *
+ConceptSpecializationExpr::Create(ASTContext &C, EmptyShell Empty,
+ unsigned NumTemplateArgs) {
+ void *Buffer = C.Allocate(totalSizeToAlloc<TemplateArgument>(
+ NumTemplateArgs));
+ return new (Buffer) ConceptSpecializationExpr(Empty, NumTemplateArgs);
+}