Revert "Verkfy llvm.experimental.memset.pattern pattern arg is integral number of bytes"

This reverts commit 78bad3b.

Author: asb

llvm/lib/IR/Verifier.cpp

@@ -5519,12 +5519,8 @@ void Verifier::visitIntrinsicCall(Intrinsic::ID ID, CallBase &Call) {
   case Intrinsic::memcpy_inline:
   case Intrinsic::memmove:
   case Intrinsic::memset:
-  case Intrinsic::memset_inline: {
-    break;
-  }
+  case Intrinsic::memset_inline:
   case Intrinsic::experimental_memset_pattern: {
-    Check(Call.getOperand(1)->getType()->getScalarSizeInBits() % 8 == 0,
-          "pattern type must be an integral number of bytes", Call);
     break;
   }
   case Intrinsic::memcpy_element_unordered_atomic: