diff options
| -rw-r--r-- | src/compiler/nir/nir_opt_algebraic.py | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index d94536439c8..b1e266259fa 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -176,6 +176,15 @@ optimizations = [ (('fmin', ('b2f(is_used_once)', a), ('b2f', b)), ('b2f', ('iand', a, b))), (('fmin', ('fneg(is_used_once)', ('b2f(is_used_once)', a)), ('fneg', ('b2f', b))), ('fneg', ('b2f', ('iand', a, b)))), + # fmin(b2f(a), b) + # bcsel(a, fmin(b2f(a), b), fmin(b2f(a), b)) + # bcsel(a, fmin(b2f(True), b), fmin(b2f(False), b)) + # bcsel(a, fmin(1.0, b), fmin(0.0, b)) + # + # Since b is a constant, constant folding will eliminate the fmin and the + # fmax. If b is > 1.0, the bcsel will be replaced with a b2f. + (('fmin', ('b2f', a), '#b'), ('bcsel', a, ('fmin', b, 1.0), ('fmin', b, 0.0))), + # ignore this opt when the result is used by a bcsel or if so we can make # use of conditional modifiers on supported hardware. (('flt(is_not_used_by_conditional)', ('fadd(is_used_once)', a, ('fneg', b)), 0.0), ('flt', a, b)), |