From: Bingfeng Mei <bmei@broadcom.com>
Date: Thu, 16 Jul 2009 16:20:28 +0000 (+0000)
Subject: modulo-sched.c (sms_schedule): stage_count <= 1 as correct comparison to skip unprofi... 
X-Git-Tag: releases/gcc-4.5.0~4544
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=db87b56d201119dba435f0ad631561ece1bd8fdc;p=thirdparty%2Fgcc.git

modulo-sched.c (sms_schedule): stage_count <= 1 as correct comparison to skip unprofitable schedule

2009-07-16  Bingfeng Mei  <bmei@broadcom.com>

	* modulo-sched.c (sms_schedule): stage_count <= 1 as correct comparison
        to skip unprofitable schedule

From-SVN: r149712
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 6612ad455713..ba80a32fd4b0 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2009-07-16  Bingfeng Mei  <bmei@broadcom.com>
+
+	* modulo-sched.c (sms_schedule): stage_count <= 1 as correct comparison
+        to skip unprofitable schedule
+        
 2009-07-16  Simon Baldwin  <simonb@google.com>
 
 	* gcc.c (option_map): New flag -no-canonical-prefixes.
diff --git a/gcc/modulo-sched.c b/gcc/modulo-sched.c
index dbe77d9c54cb..5176880a0162 100644
--- a/gcc/modulo-sched.c
+++ b/gcc/modulo-sched.c
@@ -1157,12 +1157,14 @@ sms_schedule (void)
 
       ps = sms_schedule_by_order (g, mii, maxii, node_order);
 
-      if (ps)
+      if (ps){
 	stage_count = PS_STAGE_COUNT (ps);
+        gcc_assert(stage_count >= 1);
+      }  
 
       /* Stage count of 1 means that there is no interleaving between
          iterations, let the scheduling passes do the job.  */
-      if (stage_count < 1
+      if (stage_count <= 1
 	  || (count_init && (loop_count <= stage_count))
 	  || (flag_branch_probabilities && (trip_count <= stage_count)))
 	{