Fix buildbot failure in non-assert-enabled -Werror build due to r288410

[DavidKreitzer]

Summary

The fix is simply to forward substitute the definition of VecTy into its uses.

[DavidKreitzer]

Looks like this was fixed by r288416.

lib/Target/X86/X86InterleavedAccess.cpp

if (!Subtarget.hasAVX() || ShuffleVecSize != 256 ||
     return false;
 
   return true;
 }
 
 bool X86InterleavedAccessGroup::decompose(
     Instruction *VecInst, unsigned NumSubVectors, VectorType *SubVecTy,
     SmallVectorImpl<Instruction *> &DecomposedVectors) {
-  Type *VecTy = VecInst->getType();
-
-  assert(VecTy->isVectorTy() &&
-         DL.getTypeSizeInBits(VecTy) >=
+  assert(VecInst->getType()->isVectorTy() &&
+         DL.getTypeSizeInBits(VecInst->getType()) >=
              DL.getTypeSizeInBits(SubVecTy) * NumSubVectors &&
          "Invalid Inst-size!!!");
-  assert(VecTy->getVectorElementType() == SubVecTy->getVectorElementType() &&
-         "Element type mismatched!!!");
+  assert(VecInst->getType()->getVectorElementType() ==
+         SubVecTy->getVectorElementType() && "Element type mismatched!!!");
 
   if (!isa<LoadInst>(VecInst))
     return false;
 
   LoadInst *LI = cast<LoadInst>(VecInst);
   Type *VecBasePtrTy = SubVecTy->getPointerTo(LI->getPointerAddressSpace());
 
   Value *VecBasePtr =