Make isVectorClearMaskLegal's operand list const.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49446 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index a8407ca..1ab2727 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -5602,9 +5602,10 @@
           X86::isUNPCKH_v_undef_Mask(Mask.Val));
 }
 
-bool X86TargetLowering::isVectorClearMaskLegal(std::vector<SDOperand> &BVOps,
-                                               MVT::ValueType EVT,
-                                               SelectionDAG &DAG) const {
+bool
+X86TargetLowering::isVectorClearMaskLegal(const std::vector<SDOperand> &BVOps,
+                                          MVT::ValueType EVT,
+                                          SelectionDAG &DAG) const {
   unsigned NumElts = BVOps.size();
   // Only do shuffles on 128-bit vector types for now.
   if (MVT::getSizeInBits(EVT) * NumElts == 64) return false;