From: Connor Abbott <cwabbott0@gmail.com>
Date: Fri, 30 Oct 2015 22:19:34 +0000 (-0400)
Subject: i965/sched: don't calculate live intervals for post-RA scheduling
X-Git-Tag: upstream/17.1.0~14906
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=0ef8c5cb96f6b1fea7c18c25fbff2adb6d7d0736;p=platform%2Fupstream%2Fmesa.git

i965/sched: don't calculate live intervals for post-RA scheduling

For some reason, this causes assertions on gm965 only. In any case, it's
unnecessary since we don't need liveness information in the post-RA
scheduler.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92744
Cc: Mark Janes <mark.a.janes@intel.com>
Signed-off-by: Connor Abbott <cwabbott0@gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>
---

diff --git a/src/mesa/drivers/dri/i965/brw_schedule_instructions.cpp b/src/mesa/drivers/dri/i965/brw_schedule_instructions.cpp
index 2698399..88c45f7 100644
--- a/src/mesa/drivers/dri/i965/brw_schedule_instructions.cpp
+++ b/src/mesa/drivers/dri/i965/brw_schedule_instructions.cpp
@@ -1702,7 +1702,8 @@ instruction_scheduler::run(cfg_t *cfg)
 void
 fs_visitor::schedule_instructions(instruction_scheduler_mode mode)
 {
-   calculate_live_intervals();
+   if (mode != SCHEDULE_POST)
+      calculate_live_intervals();
 
    int grf_count;
    if (mode == SCHEDULE_POST)