diff options
author | Eric Anholt <[email protected]> | 2013-11-06 17:38:23 -0800 |
---|---|---|
committer | Eric Anholt <[email protected]> | 2013-11-12 15:06:28 -0800 |
commit | e9daead784921e453906853a4a78a2f3135af2e0 (patch) | |
tree | 889cfdb316b7d80ea88bd56a1cdc3b721c172d02 /src/glsl/opt_redundant_jumps.cpp | |
parent | fbd8303a943d0d491b7c2415eb237a0731c7dec5 (diff) |
i965/fs: Try a different pre-scheduling heuristic if the first spills.
Since LIFO fails on some shaders in one particular way, and non-LIFO
systematically fails in another way on different kinds of shaders, try
them both, and pick whichever one successfully register allocates first.
Slightly prefer non-LIFO in case we produce extra dependencies in register
allocation, since it should start out with fewer stalls than LIFO.
This is madness, but I haven't come up with another way to get unigine
tropics to not spill while keeping other programs from not spilling and
retaining the non-unigine performance wins from texture-grf.
total instructions in shared programs: 1626728 -> 1626288 (-0.03%)
instructions in affected programs: 1015 -> 575 (-43.35%)
GAINED: 50
LOST: 0
Improves Unigine Tropics performance by 14.5257% +/- 0.241838% (n=38)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70445
Cc: "10.0" <[email protected]>
Reviewed-by: Matt Turner <[email protected]>
Diffstat (limited to 'src/glsl/opt_redundant_jumps.cpp')
0 files changed, 0 insertions, 0 deletions