[X86] Silence -Wsign-compare warnings.

GCC 4.8 reported two new warnings due to comparisons
between signed and unsigned integer expressions. The new warnings were
accidentally introduced by revision 229480.
Added explicit casts to silence the warnings. No functional change intended.

llvm-svn: 229488

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 1bdd6fead9d..a08ac33065d 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -24946,7 +24946,7 @@ static SDValue VectorZextCombine(SDNode *N, SelectionDAG &DAG,
   unsigned ResSize = N1.getValueType().getScalarSizeInBits();
   // Make sure the splat matches the mask we expect
   if (SplatBitSize > ResSize || 
-      (SplatValue + 1).exactLogBase2() != SrcSize)
+      (SplatValue + 1).exactLogBase2() != (int)SrcSize)
     return SDValue();
 
   // Make sure the input and output size make sense
@@ -24966,7 +24966,7 @@ static SDValue VectorZextCombine(SDNode *N, SelectionDAG &DAG,
         break;
       }
     } else {
-      if (Shuffle->getMaskElt(i) != (i / ZextRatio)) {
+      if (Shuffle->getMaskElt(i) != (int)(i / ZextRatio)) {
         // Expected element number
         IsZext = false;
         break;