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
---
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 6e30d16..4e3b611 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;
}
}
--
1.8.3.2
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