MemRefType was using a wrong `isa` function in the bindings code, which could lead to invalid IR being constructed. Also run the verifier in memref dialect tests. Reviewed By: nicolasvasilache Differential Revision: https://reviews.llvm.org/D111784
MemRefType was using a wrong `isa` function in the bindings code, which could lead to invalid IR being constructed. Also run the verifier in memref dialect tests. Reviewed By: nicolasvasilache Differential Revision: https://reviews.llvm.org/D111784