diff options
| author | Ian Romanick <[email protected]> | 2018-01-11 14:14:25 -0800 |
|---|---|---|
| committer | Ian Romanick <[email protected]> | 2018-01-30 15:40:14 -0800 |
| commit | 821e7a4d329f8460d0d27683580a703d9ed8431c (patch) | |
| tree | b37fddbe6a5e14eacf3abba9c704eec6439f9824 | |
| parent | 68420d8322c2b304a0b15f94b43dec19f082dfae (diff) | |
nir: Separate a weird compare with zero to two compares with zero
min(a+b, c+d) >= 0 becomes (a+b >= 0 && c+d >= 0).
No shader-db changes, but it does prevent 6 to 12 instruction
regressions in the next patch on all measured Intel platforms.
Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
Reviewed-by: Elie Tournier <[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 c097f128323..bee135c235c 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -596,6 +596,8 @@ late_optimizations = [ (('~feq', ('fadd', a, b), 0.0), ('feq', a, ('fneg', b))), (('~fne', ('fadd', a, b), 0.0), ('fne', a, ('fneg', b))), + (('~fge', ('fmin(is_used_once)', ('fadd(is_used_once)', a, b), ('fadd', c, d)), 0.0), ('iand', ('fge', a, ('fneg', b)), ('fge', c, ('fneg', d)))), + (('fdot2', a, b), ('fdot_replicated2', a, b), 'options->fdot_replicates'), (('fdot3', a, b), ('fdot_replicated3', a, b), 'options->fdot_replicates'), (('fdot4', a, b), ('fdot_replicated4', a, b), 'options->fdot_replicates'), |