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python: Use the right function for the job

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The code was just reimplementing itertools.combinations_with_replacement
in a less efficient way.

This does change the order of the results slightly, but it should be ok.

Signed-off-by: Mathieu Bridon <bochecha@daitauha.fr>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
This commit is contained in:
Mathieu Bridon 2018-08-09 10:27:19 +02:00 • committed by Dylan Baker
parent b618d7ea59
commit d9ca4a172e
1 changed files with 1 additions and 1 deletions
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2
src/compiler/nir/nir_opt_algebraic.py
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@ -723,7 +723,7 @@ optimizations = [
invert = OrderedDict([('feq', 'fne'), ('fne', 'feq'), ('fge', 'flt'), ('flt', 'fge')])
for left, right in list(itertools.combinations(invert.keys(), 2)) + zip(invert.keys(), invert.keys()):
for left, right in itertools.combinations_with_replacement(invert.keys(), 2):
optimizations.append((('inot', ('ior(is_used_once)', (left, a, b), (right, c, d))),
('iand', (invert[left], a, b), (invert[right], c, d))))
optimizations.append((('inot', ('iand(is_used_once)', (left, a, b), (right, c, d))),