[Mesa-dev] [PATCH] glsl: remove logical xor FINISHME

[Eric Anholt]

On Sun,  8 Jan 2012 22:44:17 -0500, Matt Turner <mattst88 at gmail.com> wrote:
> GLSL spec boneheadedly says (a ^^ a) must actually be evaluated.

What it's trying to say there is that any side-effects of both LHS and
RHS will occur (as opposed to how && or || work), not that you actually
compute the expression that you could just avoid.  Any side effects will
already be taken care of before opt_algebraic gets a look at the
ir_expression.
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