[NewGVN] Avoid AA query on non-pointers (NFCI)

In order for the instruction result to alias with the pointer it
needs to be a pointer.

Author: nikic

llvm/lib/Transforms/Scalar/NewGVN.cpp

@@ -1533,7 +1533,7 @@ NewGVN::performSymbolicLoadCoercion(Type *LoadType, Value *LoadPtr,
   // All of the below are only true if the loaded pointer is produced
   // by the dependent instruction.
   if (LoadPtr != lookupOperandLeader(DepInst) &&
-      !AA->isMustAlias(LoadPtr, DepInst))
+      DepInst->getType()->isPointerTy() && !AA->isMustAlias(LoadPtr, DepInst))
     return nullptr;
   // If this load really doesn't depend on anything, then we must be loading an
   // undef value.  This can happen when loading for a fresh allocation with no