diff options
| author | Eric Anholt <[email protected]> | 2015-01-30 13:53:39 -0800 |
|---|---|---|
| committer | Eric Anholt <[email protected]> | 2015-02-18 14:47:51 -0800 |
| commit | 1907a3a7ee4d756b12b6fef32a6e5ea7656436d1 (patch) | |
| tree | 5a21b2bed219ca6f92e56ce899f3060a25bdf754 | |
| parent | e5ecf8e4272522e1950d1d4318df19377bf49ae1 (diff) | |
nir: Add a flag for lowering fsat.
vc4 cse/algebraic-disabled stats:
total instructions in shared programs: 44356 -> 44354 (-0.00%)
instructions in affected programs: 55 -> 53 (-3.64%)
v2: Rebase to master (no TGSI->NIR present)
Reviewed-by: Kenneth Graunke <[email protected]> (v1)
| -rw-r--r-- | src/glsl/nir/nir.h | 1 | ||||
| -rw-r--r-- | src/glsl/nir/nir_opt_algebraic.py | 3 |
2 files changed, 3 insertions, 1 deletions
diff --git a/src/glsl/nir/nir.h b/src/glsl/nir/nir.h index 7be1abb5743..f46ec151f6d 100644 --- a/src/glsl/nir/nir.h +++ b/src/glsl/nir/nir.h @@ -1329,6 +1329,7 @@ typedef struct nir_function { typedef struct nir_shader_compiler_options { bool lower_ffma; bool lower_fpow; + bool lower_fsat; bool lower_fsqrt; /** lowers fneg and ineg to fsub and isub. */ bool lower_negate; diff --git a/src/glsl/nir/nir_opt_algebraic.py b/src/glsl/nir/nir_opt_algebraic.py index 83a02b6dad6..c7cb651fbb4 100644 --- a/src/glsl/nir/nir_opt_algebraic.py +++ b/src/glsl/nir/nir_opt_algebraic.py @@ -85,7 +85,8 @@ optimizations = [ (('fge', ('fneg', ('fabs', a)), 0.0), ('feq', a, 0.0)), (('bcsel', ('flt', a, b), a, b), ('fmin', a, b)), (('bcsel', ('flt', a, b), b, a), ('fmax', a, b)), - (('fmin', ('fmax', a, 0.0), 1.0), ('fsat', a)), + (('fmin', ('fmax', a, 0.0), 1.0), ('fsat', a), '!options->lower_fsat'), + (('fsat', a), ('fmin', ('fmax', a, 0.0), 1.0), 'options->lower_fsat'), # Comparison with the same args. Note that these are not done for # the float versions because NaN always returns false on float # inequalities. |