[Mesa-dev] [PATCH] glsl: Optimize mul(a, -1) into neg(a).

[Eric Anholt]

Matt Turner <mattst88 at gmail.com> writes:

> Two extra instructions in some heroesofnewerth shaders, but a win for
> everything else.
>
> total instructions in shared programs: 1531352 -> 1530815 (-0.04%)
> instructions in affected programs:     121898 -> 121361 (-0.44%)

Reviewed-by: Eric Anholt <eric at anholt.net>
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