clarify logic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86689 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/Scalar/InstructionCombining.cpp b/lib/Transforms/Scalar/InstructionCombining.cpp
index e65eaf38ad8c5dbf0c1d94545505c9733612d18a..efda6608e44d1a67d44ead393a6f611c730ab34e 100644 (file)
--- a/lib/Transforms/Scalar/InstructionCombining.cpp
+++ b/lib/Transforms/Scalar/InstructionCombining.cpp
@@ -8261,10 +8261,10 @@ Instruction *InstCombiner::commonIntCastTransforms(CastInst &CI) {
   // Only do this if the dest type is a simple type, don't convert the
   // expression tree to something weird like i93 unless the source is also
   // strange.
-  if (!isa<IntegerType>(SrcI->getType()) ||
-      (ShouldChangeType(SrcI->getType(), DestTy, TD) &&
-       CanEvaluateInDifferentType(SrcI, DestTy,
-                                  CI.getOpcode(), NumCastsRemoved))) {
+  if ((isa<VectorType>(DestTy) ||
+       ShouldChangeType(SrcI->getType(), DestTy, TD)) &&
+      CanEvaluateInDifferentType(SrcI, DestTy,
+                                 CI.getOpcode(), NumCastsRemoved)) {
     // If this cast is a truncate, evaluting in a different type always
     // eliminates the cast, so it is always a win.  If this is a zero-extension,
     // we need to do an AND to maintain the clear top-part of the computation,