Mesa (master): i965/sched: don' t calculate live intervals for post-RA scheduling

[Jason Ekstrand]

Module: Mesa
Branch: master
Commit: 0ef8c5cb96f6b1fea7c18c25fbff2adb6d7d0736
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=0ef8c5cb96f6b1fea7c18c25fbff2adb6d7d0736

Author: Connor Abbott <cwabbott0 at gmail.com>
Date:   Fri Oct 30 18:19:34 2015 -0400

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 at intel.com>
Signed-off-by: Connor Abbott <cwabbott0 at gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand at intel.com>

---

 src/mesa/drivers/dri/i965/brw_schedule_instructions.cpp |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

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)