From: Matt Turner <mattst88@gmail.com>
Date: Tue, 24 Jun 2014 19:41:35 +0000 (-0700)
Subject: i965/fs: Use is_head_sentinel() instead of ->prev == NULL.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e8e5f0a342505a4d10cbcdee03592c96d286b57c;p=mesa.git

i965/fs: Use is_head_sentinel() instead of ->prev == NULL.

Makes it more clear what we're doing and requires less knowledge of
exec_list.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
---

diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 8d98b0d30ab..263127f2de1 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -2137,7 +2137,7 @@ 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) {