On Sun, Jul 15, 2018 at 7:26 PM, Timothy Arceri <[email protected]> wrote:
> Noticed in a unigine shader.
> ---
> src/compiler/nir/nir_opt_algebraic.py | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/src/compiler/nir/nir_opt_algebraic.py
> b/src/compiler/nir/nir_opt_algebraic.py
> index 5e07d662b07..0986dde6851 100644
> --- a/src/compiler/nir/nir_opt_algebraic.py
> +++ b/src/compiler/nir/nir_opt_algebraic.py
> @@ -223,6 +223,7 @@ optimizations = [
> (('bcsel', ('inot', a), b, c), ('bcsel', a, c, b)),
> (('bcsel', a, ('bcsel', a, b, c), d), ('bcsel', a, b, d)),
> (('bcsel', a, True, 'b@bool'), ('ior', a, b)),
> + (('inot', ('bcsel', a, ('inot', b), c)), ('bcsel', a, b, ('inot', c))),
Shouldn't we have an equivalent rule for the other argument, like
+ (('inot', ('bcsel', a, b, ('inot', c))), ('bcsel', a, ('inot', b), c)),
I assume we would not benefit from a general rule that simply
propagates inot inside to both b and c unconditionally.
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