diff options
| author | Matt Turner <[email protected]> | 2016-02-04 12:00:15 -0800 |
|---|---|---|
| committer | Matt Turner <[email protected]> | 2016-02-08 20:38:17 -0800 |
| commit | a8f0960816e868783d56edac1851a6d218e09c5a (patch) | |
| tree | 35153774e292e4e9795d2fcc42bb31eb9f50d14b | |
| parent | 9f02e3ab03da91162fc0c64b91a2e5ff213dff9b (diff) | |
nir: Recognize product of open-coded pow()s.
Prevents regressions in the next commit.
Reviewed-by: Jason Ekstrand <[email protected]>
| -rw-r--r-- | src/compiler/nir/nir_opt_algebraic.py | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index 60df69fadbd..9b82bac6f6c 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))), |