# RUN: %PYTHON %s | FileCheck %s

from mlir.dialects import arith, builtin, func, linalg, tensor
from mlir.dialects.linalg.opdsl.lang import *
from mlir.ir import *


def run(f):
    print("\nTEST:", f.__name__)
    f()
    return f


# CHECK-LABEL: TEST: testFill
@run
def testFill():
    with Context() as ctx, Location.unknown():
        module = Module.create()
        f32 = F32Type.get()
        with InsertionPoint(module.body):
            # CHECK-LABEL: func @fill_tensor
            #  CHECK-SAME:   %[[OUT:[0-9a-z]+]]: tensor<12x?xf32>
            #  CHECK-NEXT: %[[CST:.*]] = arith.constant 0.0{{.*}} : f32
            #  CHECK-NEXT: %[[RES:.*]] = linalg.fill ins(%[[CST]] : f32) outs(%[[OUT]] : tensor<12x?xf32>) -> tensor<12x?xf32>
            #  CHECK-NEXT: return %[[RES]] : tensor<12x?xf32>
            @func.FuncOp.from_py_func(
                RankedTensorType.get((12, ShapedType.get_dynamic_size()), f32)
            )
            def fill_tensor(out):
                zero = arith.ConstantOp(
                    value=FloatAttr.get(f32, 0.0), result=f32
                ).result
                return linalg.fill(zero, outs=[out])

            # CHECK-LABEL: func @fill_buffer
            #  CHECK-SAME:   %[[OUT:[0-9a-z]+]]: memref<12x?xf32>
            #  CHECK-NEXT: %[[CST:.*]] = arith.constant 0.0{{.*}} : f32
            #  CHECK-NEXT: linalg.fill ins(%[[CST]] : f32) outs(%[[OUT]] : memref<12x?xf32>)
            #  CHECK-NEXT: return
            @func.FuncOp.from_py_func(
                MemRefType.get((12, ShapedType.get_dynamic_size()), f32)
            )
            def fill_buffer(out):
                zero = arith.ConstantOp(
                    value=FloatAttr.get(f32, 0.0), result=f32
                ).result
                linalg.fill(zero, outs=[out])

    print(module)


# CHECK-LABEL: TEST: testNamedStructuredOpCustomForm
@run
def testNamedStructuredOpCustomForm():
    with Context() as ctx, Location.unknown():
        module = Module.create()
        f32 = F32Type.get()
        with InsertionPoint(module.body):

            @func.FuncOp.from_py_func(
                RankedTensorType.get((4, 8), f32), RankedTensorType.get((4, 8), f32)
            )
            def named_form(lhs, rhs):
                init_result = tensor.EmptyOp([4, 8], f32)
                # Check for the named form with custom format
                #      CHECK: linalg.elemwise_unary
                # CHECK-SAME:    cast = #linalg.type_fn<cast_signed>
                # CHECK-SAME:    fun = #linalg.unary_fn<exp>
                # CHECK-SAME:    ins(%{{.*}} : tensor<4x8xf32>) outs(%{{.*}} : tensor<4x8xf32>)
                unary_result = linalg.elemwise_unary(lhs, outs=[init_result.result])
                #      CHECK: linalg.elemwise_binary
                # CHECK-SAME:    cast = #linalg.type_fn<cast_unsigned>
                # CHECK-SAME:    fun = #linalg.binary_fn<mul>
                # CHECK-SAME:    ins(%{{.*}}, %{{.*}} : tensor<4x8xf32>, tensor<4x8xf32>) outs(%{{.*}} : tensor<4x8xf32>)
                #      CHECK: return
                binary_result = linalg.elemwise_binary(
                    lhs,
                    rhs,
                    outs=[init_result.result],
                    fun=BinaryFn.mul,
                    cast=TypeFn.cast_unsigned,
                )
                return unary_result, binary_result

    print(module)


# CHECK-LABEL: TEST: testNamedStructuredOpGenericForm
@run
def testNamedStructuredOpGenericForm():
    with Context() as ctx, Location.unknown():
        module = Module.create()
        f32 = F32Type.get()
        with InsertionPoint(module.body):

            @func.FuncOp.from_py_func(
                RankedTensorType.get((4, 16), f32), RankedTensorType.get((16, 8), f32)
            )
            def named_form(lhs, rhs):
                init_result = tensor.EmptyOp([4, 8], f32)
                #      CHECK: "linalg.matmul"(%{{.*}})
                # CHECK-SAME:    cast = #linalg.type_fn<cast_signed>
                # CHECK-SAME:    operandSegmentSizes = array<i32: 2, 1>
                # CHECK-NEXT:  ^bb0(%{{.*}}: f32, %{{.*}}: f32, %{{.*}}: f32):
                # CHECK-NEXT:    arith.mulf{{.*}} (f32, f32) -> f32
                # CHECK-NEXT:    arith.addf{{.*}} (f32, f32) -> f32
                # CHECK-NEXT:    linalg.yield{{.*}} (f32) -> ()
                # CHECK-NEXT: (tensor<4x16xf32>, tensor<16x8xf32>, tensor<4x8xf32>) -> tensor<4x8xf32>
                return linalg.matmul(lhs, rhs, outs=[init_result.result])

    module.operation.print(print_generic_op_form=True)


# CHECK-LABEL: TEST: testNamedStructuredAsGenericOp
@run
def testNamedStructuredAsGenericOp():
    with Context() as ctx, Location.unknown():
        module = Module.create()
        f32 = F32Type.get()
        with InsertionPoint(module.body):

            @func.FuncOp.from_py_func(
                RankedTensorType.get((4, 16), f32), RankedTensorType.get((16, 8), f32)
            )
            def generic_form(lhs, rhs):
                init_result = tensor.EmptyOp([4, 8], f32)
                # CHECK: linalg.generic
                return linalg.matmul(
                    lhs, rhs, outs=[init_result.result], emit_generic=True
                )

    print(module)


# CHECK-LABEL: TEST: testOpResultFromOtherOp
@run
def testOpResultFromOtherOp():
    with Context(), Location.unknown():
        module = Module.create()
        f32 = F32Type.get()
        with InsertionPoint(module.body):

            @func.FuncOp.from_py_func(
                RankedTensorType.get((4, 16), f32), RankedTensorType.get((16, 8), f32)
            )
            def pass_an_op_directly(arg0, arg1):
                one = arith.ConstantOp(F32Type.get(), 1.0)
                # CHECK: %[[LHS:.*]] = linalg.fill
                lhs = linalg.fill(one, outs=[arg0])
                # CHECK: %[[RHS:.*]] = linalg.fill
                rhs = linalg.fill(one, outs=[arg1])
                # CHECK: %[[INIT:.*]] = tensor.empty
                init = tensor.EmptyOp([4, 8], f32)
                # CHECK: linalg.matmul
                # CHECK: ins(%[[LHS]], %[[RHS]]
                # CHECK: outs(%[[INIT]]
                return linalg.matmul(lhs, rhs, outs=init)

    print(module)