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| author | Ian Romanick <ian.d.romanick@intel.com> | 2020-07-07 17:36:09 -0700 |
|---|---|---|
| committer | Ian Romanick <ian.d.romanick@intel.com> | 2021-04-02 12:56:19 -0700 |
| commit | 3966e3c94d141618d39bb9962c0f9b705ea736de (patch) | |
| tree | 11cced7e112a06a2eb2424c505eed7c0888c1f33 | |
| parent | 20ca2cf36a441e885cfa087a07c89066d8f9ca6d (diff) | |
nir/algebraic: Duplicate patterns to recognize open-coded fmin / fmax in late_optimizations
| -rw-r--r-- | src/compiler/nir/nir_opt_algebraic.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index 7b48bccd8cf..5cd25eaa185 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -2393,6 +2393,14 @@ late_optimizations = [ (('ior', a, a), a), (('iand', a, a), a), + # Various optimizations above that rearrange comparisons can create + # additional opportunities for these patterns (which are copied from the + # main optimization block). + (('~bcsel', ('flt', b, a), b, a), ('fmin', a, b)), + (('~bcsel', ('flt', a, b), b, a), ('fmax', a, b)), + (('~bcsel', ('fge', a, b), b, a), ('fmin', a, b)), + (('~bcsel', ('fge', b, a), b, a), ('fmax', a, b)), + # Eliminate a constant if both choices are constants. (('bcsel', ('feq', 'a@32', 0.0), 0.0, '#b@32'), ('bcsel', ('feq', a, 0.0), ('fabs', a), b)), (('bcsel', ('fneu', 'a@32', 0.0), '#b@32', 0.0), ('bcsel', ('feq', a, 0.0), ('fabs', a), b)), |