rs6000.c (rs6000_issue_rate): Don't artificially restrict issue_rate in first pass when...

        * config/rs6000/rs6000.c (rs6000_issue_rate): Don't artificially
        restrict issue_rate in first pass when scheduling for register
        pressure.

From-SVN: r152291

gcc/ChangeLog

+2009-09-29  Pat Haugen  <pthaugen@us.ibm.com>
+
+	* config/rs6000/rs6000.c (rs6000_issue_rate): Don't artificially
+	restrict issue_rate in first pass when scheduling for register
+	pressure.
+
 2009-09-29  Basile Starynkevitch  <basile@starynkevitch.net>
             Rafael Avila de Espindola  <espindola@google.com>
 

gcc/config/rs6000/rs6000.c

@@ -21760,8 +21760,9 @@ is_nonpipeline_insn (rtx insn)
 static int
 rs6000_issue_rate (void)
 {
-  /* Use issue rate of 1 for first scheduling pass to decrease degradation.  */
-  if (!reload_completed)
+  /* Unless scheduling for register pressure, use issue rate of 1 for
+     first scheduling pass to decrease degradation.  */
+  if (!reload_completed && !flag_sched_pressure)
     return 1;
 
   switch (rs6000_cpu_attr) {