Source: matmul_i8.mlir:
func.func @matmul_i8(%lhs: tensor<?x?xi8>, %rhs: tensor<?x?xi8>, %acc: tensor<?x?xi32>) -> tensor<?x?xi32> {
%result = linalg.matmul ins(%lhs, %rhs: tensor<?x?xi8>, tensor<?x?xi8>) outs(%acc: tensor<?x?xi32>) -> tensor<?x?xi32>
return %result: tensor