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nir/opt_algebraic: Add some boolean simplifications

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total instructions in shared programs: 5998321 -> 5998287 (-0.00%)
instructions in affected programs:     4520 -> 4486 (-0.75%)
helped:                                8

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Jason Ekstrand 2015-01-28 16:55:03 -08:00
parent 70273c5cd5
commit 7f19cd5a56
1 changed files with 5 additions and 4 deletions
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9
src/glsl/nir/nir_opt_algebraic.py
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@ -77,10 +77,6 @@ optimizations = [
(('inot', ('fge', a, b)), ('flt', a, b)),
(('inot', ('ilt', a, b)), ('ige', a, b)),
(('inot', ('ige', a, b)), ('ilt', a, b)),
(('ine', ('flt', a, b), 0), ('flt', a, b)),
(('ine', ('fge', a, b), 0), ('fge', a, b)),
(('ine', ('ilt', a, b), 0), ('ilt', a, b)),
(('ine', ('ige', a, b), 0), ('ige', a, b)),
(('flt', ('fadd', a, b), 0.0), ('flt', a, ('fneg', b))),
(('fge', ('fadd', a, b), 0.0), ('fge', a, ('fneg', b))),
(('feq', ('fadd', a, b), 0.0), ('feq', a, ('fneg', b))),
@ -121,6 +117,11 @@ optimizations = [
(('frcp', ('frcp', a)), a),
(('frcp', ('fsqrt', a)), ('frsq', a)),
(('frcp', ('frsq', a)), ('fsqrt', a)),
# Boolean simplifications
(('ine', 'a@bool', 0), 'a'),
(('ieq', 'a@bool', 0), ('inot', 'a')),
(('bcsel', 'a@bool', True, False), 'a'),
(('bcsel', 'a@bool', False, True), ('inot', 'a')),
# This one may not be exact
(('feq', ('fadd', a, b), 0.0), ('feq', a, ('fneg', b))),