[Mesa-dev] [PATCH 3/3] nir: Simplify ine/ieq(ineg(a), a) -> ine/ieq(a, 0)

[Boyan Ding]

But, isn't -INT_MIN == INT_MIN?

Regards,
Boyan Ding

2015-08-06 19:36 GMT+08:00 Thomas Helland <thomashelland90 at gmail.com>:
> The same rationale as in the other patches.
> No shader-db changes.
>
> Signed-off-by: Thomas Helland <thomashelland90 at gmail.com>
> ---
>  src/glsl/nir/nir_opt_algebraic.py | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/src/glsl/nir/nir_opt_algebraic.py b/src/glsl/nir/nir_opt_algebraic.py
> index 3e483fb..d005f81 100644
> --- a/src/glsl/nir/nir_opt_algebraic.py
> +++ b/src/glsl/nir/nir_opt_algebraic.py
> @@ -115,6 +115,8 @@ optimizations = [
>     (('sne', a, b), ('b2f', ('fne', a, b)), 'options->lower_scmp'),
>     (('fne', ('fneg', a), a), ('fne', a, 0.0)),
>     (('feq', ('fneg', a), a), ('feq', a, 0.0)),
> +   (('ine', ('ineg', a), a), ('ine', a, 0)),
> +   (('ieq', ('ineg', a), a), ('ieq', a, 0)),
>     # Emulating booleans
>     (('imul', ('b2i', a), ('b2i', b)), ('b2i', ('iand', a, b))),
>     (('fmul', ('b2f', a), ('b2f', b)), ('b2f', ('iand', a, b))),
> --
> 2.5.0
>
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