[InstCombine] Use getVectorNumElements instead of explicitly casting to VectorType and calling getNumElements. NFC

llvm-svn: 290707

1 files changed, 7 insertions, 8 deletions

diff --git a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
index ada5bc9627d..b2477f6c863 100644
--- a/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
+++ b/llvm/lib/Transforms/InstCombine/InstCombineVectorOps.cpp
@@ -460,7 +460,7 @@ static ShuffleOps collectShuffleElements(Value *V,
                                          Value *PermittedRHS,
                                          InstCombiner &IC) {
   assert(V->getType()->isVectorTy() && "Invalid shuffle!");
-  unsigned NumElts = cast<VectorType>(V->getType())->getNumElements();
+  unsigned NumElts = V->getType()->getVectorNumElements();
 
   if (isa<UndefValue>(V)) {
     Mask.assign(NumElts, UndefValue::get(Type::getInt32Ty(V->getContext())));
@@ -794,7 +794,7 @@ Instruction *InstCombiner::visitInsertElementInst(InsertElementInst &IE) {
     }
   }
 
-  unsigned VWidth = cast<VectorType>(VecOp->getType())->getNumElements();
+  unsigned VWidth = VecOp->getType()->getVectorNumElements();
   APInt UndefElts(VWidth, 0);
   APInt AllOnesEltMask(APInt::getAllOnesValue(VWidth));
   if (Value *V = SimplifyDemandedVectorElts(&IE, AllOnesEltMask, UndefElts)) {
@@ -1089,8 +1089,7 @@ static void recognizeIdentityMask(const SmallVectorImpl<int> &Mask,
 //                 +--+--+--+--+
 static bool isShuffleExtractingFromLHS(ShuffleVectorInst &SVI,
                                        SmallVector<int, 16> &Mask) {
-  unsigned LHSElems =
-      cast<VectorType>(SVI.getOperand(0)->getType())->getNumElements();
+  unsigned LHSElems = SVI.getOperand(0)->getType()->getVectorNumElements();
   unsigned MaskElems = Mask.size();
   unsigned BegIdx = Mask.front();
   unsigned EndIdx = Mask.back();
@@ -1114,7 +1113,7 @@ Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
   if (isa<UndefValue>(SVI.getOperand(2)))
     return replaceInstUsesWith(SVI, UndefValue::get(SVI.getType()));
 
-  unsigned VWidth = cast<VectorType>(SVI.getType())->getNumElements();
+  unsigned VWidth = SVI.getType()->getVectorNumElements();
 
   APInt UndefElts(VWidth, 0);
   APInt AllOnesEltMask(APInt::getAllOnesValue(VWidth));
@@ -1126,7 +1125,7 @@ Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
     MadeChange = true;
   }
 
-  unsigned LHSWidth = cast<VectorType>(LHS->getType())->getNumElements();
+  unsigned LHSWidth = LHS->getType()->getVectorNumElements();
 
   // Canonicalize shuffle(x    ,x,mask) -> shuffle(x, undef,mask')
   // Canonicalize shuffle(undef,x,mask) -> shuffle(x, undef,mask').
@@ -1329,11 +1328,11 @@ Instruction *InstCombiner::visitShuffleVectorInst(ShuffleVectorInst &SVI) {
   if (LHSShuffle) {
     LHSOp0 = LHSShuffle->getOperand(0);
     LHSOp1 = LHSShuffle->getOperand(1);
-    LHSOp0Width = cast<VectorType>(LHSOp0->getType())->getNumElements();
+    LHSOp0Width = LHSOp0->getType()->getVectorNumElements();
   }
   if (RHSShuffle) {
     RHSOp0 = RHSShuffle->getOperand(0);
-    RHSOp0Width = cast<VectorType>(RHSOp0->getType())->getNumElements();
+    RHSOp0Width = RHSOp0->getType()->getVectorNumElements();
   }
   Value* newLHS = LHS;
   Value* newRHS = RHS;