[Mesa-dev] [PATCH 1/2] i965/fs/gen7: Allow reads from MRFs.

[Eric Anholt]

Matt Turner <mattst88 at gmail.com> writes:

> Since they're actually GRFs, we can read from them.
>
> total instructions in shared programs: 852751 -> 851371 (-0.16%)
> instructions in affected programs:     227286 -> 225906 (-0.61%)
> (no regressions)

I don't see you actually rewriting these GRF reads to be the new MRF, so
they'll now be reading uninitialized values.

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