src/freedreno/ir3/ir3_nir_trig.py

   1 #
   2 # Copyright (C) 2016 Intel Corporation
   3 #
   4 # Permission is hereby granted, free of charge, to any person obtaining a
   5 # copy of this software and associated documentation files (the "Software"),
   6 # to deal in the Software without restriction, including without limitation
   7 # the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 # and/or sell copies of the Software, and to permit persons to whom the
   9 # Software is furnished to do so, subject to the following conditions:
  10 #
  11 # The above copyright notice and this permission notice (including the next
  12 # paragraph) shall be included in all copies or substantial portions of the
  13 # Software.
  14 #
  15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18 # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21 # IN THE SOFTWARE.
  22
  23 from __future__ import print_function
  24
  25 import argparse
  26 import sys
  27
  28 trig_workarounds = [
  29    (('fsin', 'x@32'), ('fsin', ('fsub', ('fmul', 6.2831853, ('ffract', ('fadd', ('fmul', 0.15915494, 'x'), 0.5))), 3.14159265))),
  30    (('fcos', 'x@32'), ('fcos', ('fsub', ('fmul', 6.2831853, ('ffract', ('fadd', ('fmul', 0.15915494, 'x'), 0.5))), 3.14159265))),
  31 ]
  32
  33
  34 def main():
  35     parser = argparse.ArgumentParser()
  36     parser.add_argument('-p', '--import-path', required=True)
  37     args = parser.parse_args()
  38     sys.path.insert(0, args.import_path)
  39     run()
  40
  41
  42 def run():
  43     import nir_algebraic  # pylint: disable=import-error
  44
  45     print('#include "ir3_nir.h"')
  46     print(nir_algebraic.AlgebraicPass("ir3_nir_apply_trig_workarounds",
  47                                       trig_workarounds).render())
  48
  49
  50 if __name__ == '__main__':
  51     main()