KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

nir: Transform pow(x, 4) into (x*x)*(x*x).

This commit is contained in:
Matt Turner 2015-04-24 11:37:30 -07:00
parent 9b577d5702
commit f251ea393b
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/glsl/nir/nir_opt_algebraic.py
View File

@ -144,6 +144,7 @@ optimizations = [
(('fexp', ('fmul', ('flog', a), b)), ('fpow', a, b), '!options->lower_fpow'), # e^(ln(a)*b) = a^b
(('fpow', a, 1.0), a),
(('fpow', a, 2.0), ('fmul', a, a)),
(('fpow', a, 4.0), ('fmul', ('fmul', a, a), ('fmul', a, a))),
(('fpow', 2.0, a), ('fexp2', a)),
(('fsqrt', ('fexp2', a)), ('fexp2', ('fmul', 0.5, a))),
(('fsqrt', ('fexp', a)), ('fexp', ('fmul', 0.5, a))),