From: pthaugen <pthaugen@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 29 Sep 2009 18:58:56 +0000 (+0000)
Subject:         * config/rs6000/rs6000.c (rs6000_issue_rate): Don't artificially
X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=commitdiff_plain;h=09fdf2a9cffad9e3f3a0e00e430dc98e18ac7219

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



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@152291 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ac2045b7091..197cec1da8d 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+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>
 
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 2de4ffad046..cafe2b318aa 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/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) {