Add member template 'Type::getAs<T>', which converts a Type* to a respective T*.

This method is intended to eventually replace the individual
Type::getAsXXXType<> methods.

The motivation behind this change is twofold:

1) Reduce redundant implementations of Type::getAsXXXType() methods. Most of
them are basically copy-and-paste.

2) By centralizing the implementation of the getAs<Type> logic we can more
smoothly move over to Doug Gregor's proposed canonical type smart pointer
scheme.

Along with this patch:

a) Removed 'Type::getAsPointerType()'; now clients use getAs<PointerType>.
b) Removed 'Type::getAsBlockPointerTypE()'; now clients use getAs<BlockPointerType>.

llvm-svn: 76098

1 files changed, 5 insertions, 5 deletions

diff --git a/clang/lib/CodeGen/CGExprScalar.cpp b/clang/lib/CodeGen/CGExprScalar.cpp
index e18e08b5c5a..0316116631a 100644
--- a/clang/lib/CodeGen/CGExprScalar.cpp
+++ b/clang/lib/CodeGen/CGExprScalar.cpp
@@ -679,7 +679,7 @@ Value *ScalarExprEmitter::VisitPrePostIncDec(const UnaryOperator *E,
   int AmountVal = isInc ? 1 : -1;
 
   if (ValTy->isPointerType() &&
-      ValTy->getAsPointerType()->isVariableArrayType()) {
+      ValTy->getAs<PointerType>()->isVariableArrayType()) {
     // The amount of the addition/subtraction needs to account for the VLA size
     CGF.ErrorUnsupported(E, "VLA pointer inc/dec");
   }
@@ -1002,13 +1002,13 @@ Value *ScalarExprEmitter::EmitAdd(const BinOpInfo &Ops) {
   }
 
   if (Ops.Ty->isPointerType() &&
-      Ops.Ty->getAsPointerType()->isVariableArrayType()) {
+      Ops.Ty->getAs<PointerType>()->isVariableArrayType()) {
     // The amount of the addition needs to account for the VLA size
     CGF.ErrorUnsupported(Ops.E, "VLA pointer addition");
   }
   Value *Ptr, *Idx;
   Expr *IdxExp;
-  const PointerType *PT = Ops.E->getLHS()->getType()->getAsPointerType();
+  const PointerType *PT = Ops.E->getLHS()->getType()->getAs<PointerType>();
   const ObjCObjectPointerType *OPT = 
     Ops.E->getLHS()->getType()->getAsObjCObjectPointerType();
   if (PT || OPT) {
@@ -1016,7 +1016,7 @@ Value *ScalarExprEmitter::EmitAdd(const BinOpInfo &Ops) {
     Idx = Ops.RHS;
     IdxExp = Ops.E->getRHS();
   } else {  // int + pointer
-    PT = Ops.E->getRHS()->getType()->getAsPointerType();
+    PT = Ops.E->getRHS()->getType()->getAs<PointerType>();
     OPT = Ops.E->getRHS()->getType()->getAsObjCObjectPointerType();
     assert((PT || OPT) && "Invalid add expr");
     Ptr = Ops.RHS;
@@ -1073,7 +1073,7 @@ Value *ScalarExprEmitter::EmitSub(const BinOpInfo &Ops) {
   }
 
   if (Ops.E->getLHS()->getType()->isPointerType() &&
-      Ops.E->getLHS()->getType()->getAsPointerType()->isVariableArrayType()) {
+      Ops.E->getLHS()->getType()->getAs<PointerType>()->isVariableArrayType()) {
     // The amount of the addition needs to account for the VLA size for
     // ptr-int
     // The amount of the division needs to account for the VLA size for