[Mesa-dev] [PATCH 00/12] i965/fs: Spilling fixes.

[Francisco Jerez]

This series fixes the FS register spilling code to apply correct
channel masks to the spilled data regardless of the datatype and
execution controls of the generating instruction, which is especially
important for instructions manipulating data of type size other than
32 bit (e.g. FP64) or instructions with non-trivial execution controls
(which will become somewhat more common in SIMD32 shaders).

A bunch of FP64 piglit tests that spill registers are fixed by this
series, and it considerably improves the piglit test pass rate with
INTEL_DEBUG set to spill_fs to force the register allocator to spill
all registers -- On SKL I only need an additional workaround to get it
to survive a full spill_fs piglit run without hangs or regressions,
but because the problem doesn't seem to be compiler-related I plan to
address it separately after some additional investigation.

You can find the same series in my Mesa tree:

https://cgit.freedesktop.org/~currojerez/mesa/log/?h=i965-spilling-fixes