[Mesa-dev] [PATCH 12/16] i965/fs: Use is_head_sentinel() instead of ->prev == NULL.

[Matt Turner]

Makes it more clear what we're doing and requires less knowledge of
exec_list.
---
 src/mesa/drivers/dri/i965/brw_fs.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 185a1f6..3dd5c0e 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -2120,7 +2120,7 @@ fs_visitor::compute_to_mrf()
        */
       fs_inst *scan_inst;
       for (scan_inst = (fs_inst *)inst->prev;
-	   scan_inst->prev != NULL;
+           !scan_inst->is_head_sentinel();
 	   scan_inst = (fs_inst *)scan_inst->prev) {
 	 if (scan_inst->dst.file == GRF &&
 	     scan_inst->dst.reg == inst->src[0].reg) {
-- 
1.8.3.2