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nir: Transform expressions of b2f(a) and b2f(b) to a ^^ b

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All Gen platforms had pretty similar results. (Skylake shown)
total instructions in shared programs: 14276892 -> 14276886 (<.01%)
instructions in affected programs: 484 -> 478 (-1.24%)
helped: 2
HURT: 0

total cycles in shared programs: 532578397 -> 532578395 (<.01%)
cycles in affected programs: 3522 -> 3520 (-0.06%)
helped: 1
HURT: 0

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Thomas Helland <thomashelland90@gmail.com>
This commit is contained in:
Ian Romanick 2018-08-01 19:33:24 -07:00
parent 3aca80aabc
commit c658b6c4c8
1 changed files with 3 additions and 0 deletions
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3
src/compiler/nir/nir_opt_algebraic.py
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@ -173,6 +173,9 @@ optimizations = [
(('fne', ('fmul', ('b2f', a), ('b2f', b)), 0.0), ('iand', a, b)),
(('fne', ('fmin', ('b2f', a), ('b2f', b)), 0.0), ('iand', a, b)),
(('fne', ('bcsel', a, ('b2f', b), 0.0) , 0.0), ('iand', a, b)),
(('fne', ('fadd', ('b2f', a), ('fneg', ('b2f', b))), 0.0), ('ixor', a, b)),
(('fne', ('b2f', a) , ('b2f', b) ), ('ixor', a, b)),
(('fne', ('fneg', ('b2f', a)), ('fneg', ('b2f', b))), ('ixor', a, b)),
(('feq', ('fadd', ('b2f', a), ('b2f', b)), 0.0), ('inot', ('ior', a, b))),
(('feq', ('fmax', ('b2f', a), ('b2f', b)), 0.0), ('inot', ('ior', a, b))),
(('feq', ('bcsel', a, 1.0, ('b2f', b)) , 0.0), ('inot', ('ior', a, b))),