diff options
| author | Sagar Ghuge <sagar.ghuge@intel.com> | 2019-02-25 11:43:53 -0800 |
|---|---|---|
| committer | Sagar Ghuge <sagar.ghuge@intel.com> | 2019-03-04 15:50:25 -0800 |
| commit | 47ec9bdc604cb91af5acdb8522972ede7872cf71 (patch) | |
| tree | 8039f42540f65080e806f33595631e61d8ac5cd1 | |
| parent | 1d8994a63b546a5b2dc4feb5bd98a84ee853d6af (diff) | |
nir/algebraic: Optimize low 32 bit extraction
Optimize a situation where we only need lower 32 bits from 64 bit
result.
Signed-off-by: Sagar Ghuge <sagar.ghuge@intel.com>
Suggested-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
| -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 53cfa94ae93..e8191b72271 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -70,6 +70,8 @@ optimizations = [ (('imul', a, '#b@32(is_pos_power_of_two)'), ('ishl', a, ('find_lsb', b))), (('imul', a, '#b@32(is_neg_power_of_two)'), ('ineg', ('ishl', a, ('find_lsb', ('iabs', b))))), + (('unpack_64_2x32_split_x', ('imul_2x32_64(is_used_once)', a, b)), ('imul', a, b)), + (('unpack_64_2x32_split_x', ('umul_2x32_64(is_used_once)', a, b)), ('imul', a, b)), (('imul_2x32_64', a, b), ('pack_64_2x32_split', ('imul', a, b), ('imul_high', a, b)), 'options->lower_mul_2x32_64'), (('umul_2x32_64', a, b), ('pack_64_2x32_split', ('imul', a, b), ('umul_high', a, b)), 'options->lower_mul_2x32_64'), (('udiv', a, 1), a), |