Module: Mesa Branch: master Commit: a8f0960816e868783d56edac1851a6d218e09c5a URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=a8f0960816e868783d56edac1851a6d218e09c5a
Author: Matt Turner <[email protected]> Date: Thu Feb 4 12:00:15 2016 -0800 nir: Recognize product of open-coded pow()s. Prevents regressions in the next commit. Reviewed-by: Jason Ekstrand <[email protected]> --- src/compiler/nir/nir_opt_algebraic.py | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index 60df69f..9b82bac 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -167,6 +167,8 @@ optimizations = [ (('flog2', ('fexp2', a)), a), # lg2(2^a) = a (('fpow', a, b), ('fexp2', ('fmul', ('flog2', a), b)), 'options->lower_fpow'), # a^b = 2^(lg2(a)*b) (('fexp2', ('fmul', ('flog2', a), b)), ('fpow', a, b), '!options->lower_fpow'), # 2^(lg2(a)*b) = a^b + (('fexp2', ('fadd', ('fmul', ('flog2', a), b), ('fmul', ('flog2', c), d))), + ('fmul', ('fpow', a, b), ('fpow', c, d)), '!options->lower_fpow'), # 2^(lg2(a) * b + lg2(c) + d) = a^b * c^d (('fpow', a, 1.0), a), (('fpow', a, 2.0), ('fmul', a, a)), (('fpow', a, 4.0), ('fmul', ('fmul', a, a), ('fmul', a, a))), _______________________________________________ mesa-commit mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-commit
