diff options
| author | Kenneth Graunke <[email protected]> | 2015-01-21 23:52:17 -0800 |
|---|---|---|
| committer | Kenneth Graunke <[email protected]> | 2015-01-23 14:53:26 -0800 |
| commit | 15063d2ad0945004ef387511d0c805bbe734bc5f (patch) | |
| tree | 08315aebf71d395a3bc5561a28f245ddd5854ed6 | |
| parent | bbd60f6d7916d5758ba1b8d49cb0c37c1543199e (diff) | |
nir: Add algebraic optimizations for division and reciprocal.
These also exist in opt_algebraic.cpp.
total NIR instructions in shared programs: 2011430 -> 2011211 (-0.01%)
NIR instructions in affected programs: 42221 -> 42002 (-0.52%)
helped: 198
total i965 instructions in shared programs: 6020553 -> 6020116 (-0.01%)
i965 instructions in affected programs: 84322 -> 83885 (-0.52%)
helped: 394
HURT: 1 (by 1 instruction)
Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Jason Ekstrand <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
| -rw-r--r-- | src/glsl/nir/nir_opt_algebraic.py | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/glsl/nir/nir_opt_algebraic.py b/src/glsl/nir/nir_opt_algebraic.py index 42846e1202b..9c62b283634 100644 --- a/src/glsl/nir/nir_opt_algebraic.py +++ b/src/glsl/nir/nir_opt_algebraic.py @@ -106,6 +106,11 @@ optimizations = [ (('fpow', a, 1.0), a), (('fpow', a, 2.0), ('fmul', a, a)), (('fpow', 2.0, a), ('fexp2', a)), + # Division and reciprocal + (('fdiv', 1.0, a), ('frcp', a)), + (('frcp', ('frcp', a)), a), + (('frcp', ('fsqrt', a)), ('frsq', a)), + (('frcp', ('frsq', a)), ('fsqrt', a)), # This one may not be exact (('feq', ('fadd', a, b), 0.0), ('feq', a, ('fneg', b))), |