From 509b2a652305836947bc59bc07616f71cc202c5a Mon Sep 17 00:00:00 2001 From: Matt Turner Date: Wed, 9 Apr 2014 14:04:10 -0700 Subject: [PATCH] i965/fs: Reset reg_from when we can't coalesce. Not setting this would prevented coalescing after a failed attempt if the sources for both MOVs were the same. total instructions in shared programs: 1654531 -> 1650224 (-0.26%) instructions in affected programs: 423167 -> 418860 (-1.02%) GAINED: 2 LOST: 0 Reviewed-by: Eric Anholt --- src/mesa/drivers/dri/i965/brw_fs_register_coalesce.cpp | 1 + 1 file changed, 1 insertion(+) diff --git a/src/mesa/drivers/dri/i965/brw_fs_register_coalesce.cpp b/src/mesa/drivers/dri/i965/brw_fs_register_coalesce.cpp index 6e30d16816d..4e3b611197a 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_register_coalesce.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_register_coalesce.cpp @@ -162,6 +162,7 @@ fs_visitor::register_coalesce() if (!can_coalesce_vars(live_intervals, &instructions, inst, var_to[i], var_from[i])) { can_coalesce = false; + reg_from = -1; break; } } -- 2.30.2