PSyclone/src/psyclone/tests/psyir/transformations/intrinsics/min2code_trans_test.py at d1531677e8d261307c393e668a690d15d0cfe09c · stfc/PSyclone · GitHub

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# -----------------------------------------------------------------------------
# BSD 3-Clause License
#
# Copyright (c) 2021-2026, Science and Technology Facilities Council
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice,
#   this list of conditions and the following disclaimer in the documentation
#   and/or other materials provided with the distribution.
#
# * Neither the name of the copyright holder nor the names of its
#   contributors may be used to endorse or promote products derived from
#   this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# -----------------------------------------------------------------------------
# Author: R. W. Ford, STFC Daresbury Lab
# Modified: S. Siso, STFC Daresbury Lab

'''Module containing tests for the Min2CodeTrans transformation.'''


from psyclone.psyir.nodes import IntrinsicCall, BinaryOperation
from psyclone.psyir.transformations import Min2CodeTrans
from psyclone.psyir.transformations.intrinsics.minormax2code_trans import \
    MinOrMax2CodeTrans


def test_initialise():
    '''Check that the class Min2CodeTrans behaves as expected when an
    instance of the class is created.

    '''
    assert issubclass(Min2CodeTrans, MinOrMax2CodeTrans)
    trans = Min2CodeTrans()
    assert trans._intrinsic == IntrinsicCall.Intrinsic.MIN
    assert trans._compare_operator == BinaryOperation.Operator.LT


def test_apply(fortran_reader, fortran_writer):
    '''Test that applying the Min2CodeTrans behaves as expected.
    '''
    code = """subroutine test
        integer :: i, j, k, l
        k = MIN(i,j, l)
    end subroutine"""

    psyir = fortran_reader.psyir_from_source(code)
    trans = Min2CodeTrans()
    trans.apply(psyir.children[0].children[0].rhs)
    correct = """subroutine test()
  integer :: i
  integer :: j
  integer :: k
  integer :: l
  integer :: res_min
  integer :: tmp_min

  res_min = i
  tmp_min = j
  if (tmp_min < res_min) then
    res_min = tmp_min
  end if
  tmp_min = l
  if (tmp_min < res_min) then
    res_min = tmp_min
  end if
  k = res_min

end subroutine test"""
    assert correct in fortran_writer(psyir)