From: Matt Turner <mattst88@gmail.com>
Date: Sun, 13 Mar 2016 05:16:03 +0000 (-0800)
Subject: i965: Don't add barrier deps for FB write messages.
X-Git-Tag: upstream/17.1.0~11474
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4fea98991c8f94f14e469d4621eddc5247d4efbd;p=platform%2Fupstream%2Fmesa.git

i965: Don't add barrier deps for FB write messages.

Ken did this earlier, and this is just me reimplementing his patch a
little differently.

Reviewed-by: Francisco Jerez <currojerez@riseup.net>
---

diff --git a/src/mesa/drivers/dri/i965/brw_schedule_instructions.cpp b/src/mesa/drivers/dri/i965/brw_schedule_instructions.cpp
index befa9ff..8d92584 100644
--- a/src/mesa/drivers/dri/i965/brw_schedule_instructions.cpp
+++ b/src/mesa/drivers/dri/i965/brw_schedule_instructions.cpp
@@ -897,7 +897,8 @@ is_scheduling_barrier(const fs_inst *inst)
 {
    return inst->opcode == FS_OPCODE_PLACEHOLDER_HALT ||
           inst->is_control_flow() ||
-          inst->has_side_effects();
+          inst->eot ||
+          (inst->has_side_effects() && inst->opcode != FS_OPCODE_FB_WRITE);
 }
 
 void