Add a DecltypeType type.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@74099 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index b80142f..e23bb34 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -460,6 +460,10 @@
case Type::TypeOf:
return getTypeInfo(cast<TypeOfType>(T)->getUnderlyingType().getTypePtr());
+ case Type::Decltype:
+ return getTypeInfo(cast<DecltypeType>(T)->getUnderlyingExpr()->getType()
+ .getTypePtr());
+
case Type::QualifiedName:
return getTypeInfo(cast<QualifiedNameType>(T)->getNamedType().getTypePtr());
@@ -1659,6 +1663,19 @@
return QualType(tot, 0);
}
+/// getDecltypeType - Unlike many "get<Type>" functions, we don't unique
+/// DecltypeType AST's. The only motivation to unique these nodes would be
+/// memory savings. Since decltype(t) is fairly uncommon, space shouldn't be
+/// an issue. This doesn't effect the type checker, since it operates
+/// on canonical type's (which are always unique).
+QualType ASTContext::getDecltypeType(Expr *e) {
+ // FIXME: Use the right type here!
+ QualType Canonical = getCanonicalType(e->getType());
+ DecltypeType *dt = new (*this, 8) DecltypeType(e, Canonical);
+ Types.push_back(dt);
+ return QualType(dt, 0);
+}
+
/// getTagDeclType - Return the unique reference to the type for the
/// specified TagDecl (struct/union/class/enum) decl.
QualType ASTContext::getTagDeclType(TagDecl *Decl) {