78 lines
2.8 KiB
Python
78 lines
2.8 KiB
Python
# Copyright (C) 2021 Collabora, Ltd.
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# Copyright (C) 2016 Intel Corporation
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice (including the next
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# paragraph) shall be included in all copies or substantial portions of the
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# Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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import argparse
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import sys
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import math
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a = 'a'
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b = 'b'
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c = 'c'
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algebraic_late = [
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# Canonical form. The scheduler will convert back if it makes sense.
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(('fmul', a, 2.0), ('fadd', a, a)),
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# Fuse Mali-specific clamps
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(('fmin', ('fmax', a, -1.0), 1.0), ('fsat_signed_mali', a)),
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(('fmax', ('fmin', a, 1.0), -1.0), ('fsat_signed_mali', a)),
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(('fmax', a, 0.0), ('fclamp_pos_mali', a)),
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(('fabs', ('fddx', a)), ('fabs', ('fddx_must_abs_mali', a))),
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(('fabs', ('fddy', b)), ('fabs', ('fddy_must_abs_mali', b))),
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]
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# Handling all combinations of boolean and float sizes for b2f is nontrivial.
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# bcsel has the same problem in more generality; lower b2f to bcsel in NIR to
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# reuse the efficient implementations of bcsel. This includes special handling
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# to allow vectorization in places the hardware does not directly.
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#
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# Because this lowering must happen late, NIR won't squash inot in
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# automatically. Do so explicitly. (The more specific pattern must be first.)
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for bsz in [8, 16, 32]:
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for fsz in [16, 32]:
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algebraic_late += [
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((f'b2f{fsz}', ('inot', f'a@{bsz}')), (f'b{bsz}csel', a, 0.0, 1.0)),
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((f'b2f{fsz}', f'a@{bsz}'), (f'b{bsz}csel', a, 1.0, 0.0)),
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]
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument('-p', '--import-path', required=True)
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args = parser.parse_args()
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sys.path.insert(0, args.import_path)
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run()
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def run():
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import nir_algebraic # pylint: disable=import-error
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print('#include "bifrost_nir.h"')
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print(nir_algebraic.AlgebraicPass("bifrost_nir_lower_algebraic_late",
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algebraic_late).render())
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if __name__ == '__main__':
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main()
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