Revert r78535, it is causing a number of failures to build projects.

--- Reverse-merging r78535 into '.':
D    test/Sema/altivec-init.c
U    include/clang/Basic/DiagnosticSemaKinds.td
U    include/clang/AST/Expr.h
U    include/clang/AST/StmtNodes.def
U    include/clang/Parse/Parser.h
U    include/clang/Parse/Action.h
U    tools/clang-cc/clang-cc.cpp
U    lib/Frontend/PrintParserCallbacks.cpp
U    lib/CodeGen/CGExprScalar.cpp
U    lib/Sema/SemaInit.cpp
U    lib/Sema/Sema.h
U    lib/Sema/SemaExpr.cpp
U    lib/Sema/SemaTemplateInstantiateExpr.cpp
U    lib/AST/StmtProfile.cpp
U    lib/AST/Expr.cpp
U    lib/AST/StmtPrinter.cpp
U    lib/Parse/ParseExpr.cpp
U    lib/Parse/ParseExprCXX.cpp


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@78551 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprScalar.cpp b/lib/CodeGen/CGExprScalar.cpp
index e761e9f..0eb21c9 100644
--- a/lib/CodeGen/CGExprScalar.cpp
+++ b/lib/CodeGen/CGExprScalar.cpp
@@ -475,7 +475,7 @@
   }
   
   // A scalar can be splatted to an extended vector of the same element type
-  if (DstType->isExtVectorType() && !SrcType->isVectorType()) {
+  if (DstType->isExtVectorType() && !isa<VectorType>(SrcType)) {
     // Cast the scalar to element type
     QualType EltTy = DstType->getAsExtVectorType()->getElementType();
     llvm::Value *Elt = EmitScalarConversion(Src, SrcType, EltTy);