i965/fs: Clear variable from live-set if it's completely overwritten.
authorMatt Turner <mattst88@gmail.com>
Mon, 14 Apr 2014 18:17:13 +0000 (11:17 -0700)
committerMatt Turner <mattst88@gmail.com>
Tue, 15 Apr 2014 16:25:44 +0000 (09:25 -0700)
commit18d12336b964cad54bbc0780380c3dcf625abb3d
tree97d8efebef15112c340479e61ddc7b5ae6b5a01f
parentf34f39330bb41fb0a86930908de10353193a841d
i965/fs: Clear variable from live-set if it's completely overwritten.

One program affected:

instructions in affected programs:     246 -> 244 (-0.81%)

Reviewed-by: Eric Anholt <eric@anholt.net>
src/mesa/drivers/dri/i965/brw_fs_dead_code_eliminate.cpp