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nir/algebraic: Generalize an optimization

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This just makes it nicely scale across bit sizes.

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Tested-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
This commit is contained in:
Jason Ekstrand
2018-12-06 12:56:33 -06:00
committed by Jason Ekstrand
parent 487514ae61
commit 615cc26b97
1 changed files with 9 additions and 2 deletions
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11
src/compiler/nir/nir_opt_algebraic.py
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@@ -27,6 +27,7 @@ from __future__ import print_function
from collections import OrderedDict from collections import OrderedDict
import nir_algebraic import nir_algebraic
from nir_opcodes import type_sizes
import itertools import itertools
# Convenience variables # Convenience variables
@@ -755,9 +756,15 @@ for left, right in itertools.combinations_with_replacement(invert.keys(), 2):
optimizations.append((('inot', ('iand(is_used_once)', (left, a, b), (right, c, d))), optimizations.append((('inot', ('iand(is_used_once)', (left, a, b), (right, c, d))),
('ior', (invert[left], a, b), (invert[right], c, d)))) ('ior', (invert[left], a, b), (invert[right], c, d))))
# Optimize x2bN(b2x(x)) -> x
for size in type_sizes('bool'):
aN = 'a@' + str(size)
f2bN = 'f2b' + str(size)
i2bN = 'i2b' + str(size)
optimizations.append(((f2bN, ('b2f', aN)), a))
optimizations.append(((i2bN, ('b2i', aN)), a))
# Optimize x2yN(b2x(x)) -> b2y # Optimize x2yN(b2x(x)) -> b2y
optimizations.append((('f2b32', ('b2f', 'a@32')), a))
optimizations.append((('i2b32', ('b2i', 'a@32')), a))
for x, y in itertools.product(['f', 'u', 'i'], ['f', 'u', 'i']): for x, y in itertools.product(['f', 'u', 'i'], ['f', 'u', 'i']):
if x != 'f' and y != 'f' and x != y: if x != 'f' and y != 'f' and x != y:
continue continue