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-rw-r--r--src/mesa/drivers/dri/i965/brw_fs.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index c0fee114a8..e2c7dbde6a 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -2563,6 +2563,10 @@ fs_visitor::register_coalesce()
continue;
}
+ /* Update live interval so we don't have to recalculate. */
+ this->virtual_grf_use[inst->src[0].reg] = MAX2(virtual_grf_use[inst->src[0].reg],
+ virtual_grf_use[inst->dst.reg]);
+
/* Rewrite the later usage to point at the source of the move to
* be removed.
*/