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authorEric Anholt <[email protected]>2013-10-28 15:17:07 -0700
committerEric Anholt <[email protected]>2013-10-30 15:46:54 -0700
commit20dbeadd83ffca2345c4ba1f1ac27c19bade0d4a (patch)
treec5b73ddbd3cb2f043c76e5ecfbd1271a143c1e3e /.gitattributes
parent017361dd37b678efa44facc4a396784f4ce980bc (diff)
i965/fs: Prefer more-critical instructions of the same age in LIFO scheduling.
When faced with a million instructions that all became candidates at the same time (none of which individually reduce register pressure), the ones on the critical path are more likely to be the ones that will free up some candidates soon. shader-db: total instructions in shared programs: 1681070 -> 1681070 (0.00%) instructions in affected programs: 0 -> 0 GAINED: 40 LOST: 74 Fixes indistinguishable-from-hanging behavior in GLES3conform's uniform_buffer_object_max_uniform_block_size test, regressed by c3c9a8c85758796a26b48e484286e6b6f5a5299a. Given that 93bd627d5a6c485948b94488e6cd53a06b7ebdcf was unlocked by that commit, the net effect on 16-wide program count is still quite positive, and I think this should give us more stable scheduling (less dependency on original instruction emit order). v2: Comment suggestions by Paul Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70943 Reviewed-by: Paul Berry <[email protected]>
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