80e61e3842
`linalg.matmul` already has an attribute for casts, defaults to signed but allowed unsigned, so the operation `linalg.matmul_unsigned` is redundant. The generalization test has an example on how to lower to unsigned matmul in linalg. This is the first PR in a list of many that will simplify the linalg operations by using similar attributes. Ref: https://discourse.llvm.org/t/rfc-transpose-attribute-for-linalg-matmul-operations/80092
Multi-Level Intermediate Representation
See https://mlir.llvm.org/ for more information.