[RISCV] Add SDTCisInt to the SDTRVVSlide1 since it is only used for vslide1up.vx/vslide1down.vx.

The scalar type is already marked as XLenVT. The floating point
version would need a different rule.

Author: topperc

llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td

@@ -1137,7 +1137,7 @@ def SDTRVVSlide : SDTypeProfile<1, 5, [
   SDTCVecEltisVT<4, i1>, SDTCisSameNumEltsAs<0, 4>, SDTCisVT<5, XLenVT>
 ]>;
 def SDTRVVSlide1 : SDTypeProfile<1, 4, [
-  SDTCisVec<0>, SDTCisSameAs<1, 0>, SDTCisVT<2, XLenVT>,
+  SDTCisVec<0>, SDTCisSameAs<1, 0>, SDTCisInt<0>, SDTCisVT<2, XLenVT>,
   SDTCVecEltisVT<3, i1>, SDTCisSameNumEltsAs<0, 3>, SDTCisVT<4, XLenVT>
 ]>;