From patchwork Mon Apr 11 19:23:39 2011
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Subject: patch PR48464
Date: Mon, 11 Apr 2011 09:23:39 -0000
From: Vladimir Makarov <vmakarov@redhat.com>
X-Patchwork-Id: 90635
Message-Id: <4DA3553B.2020807@redhat.com>
To: gcc-patches <gcc-patches@gcc.gnu.org>

The following patch fixes PR48464.  The description of the problem can 
be found on

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48464

Committed as obvious after successful bootstrap on x86-64.

2011-04-11  Vladimir Makarov <vmakarov@redhat.com>

         PR middle-end/48464
         * ira.c (setup_pressure_classes): Fix typo in loop condition.
         (setup_allocno_and_important_classes): Ditto.


Index: ira.c
===================================================================
--- ira.c	(revision 172273)
+++ ira.c	(working copy)
@@ -863,7 +863,7 @@ setup_pressure_classes (void)
      registers available for the allocation.  */
   CLEAR_HARD_REG_SET (temp_hard_regset);
   CLEAR_HARD_REG_SET (temp_hard_regset2);
-  for (cl = 0; cl <= LIM_REG_CLASSES; cl++)
+  for (cl = 0; cl < LIM_REG_CLASSES; cl++)
     {
       for (i = 0; i < n; i++)
 	if ((int) pressure_classes[i] == cl)
@@ -923,7 +923,7 @@ setup_allocno_and_important_classes (voi
   /* Collect classes which contain unique sets of allocatable hard
      registers.  Prefer GENERAL_REGS to other classes containing the
      same set of hard registers.  */
-  for (i = 0; i <= LIM_REG_CLASSES; i++)
+  for (i = 0; i < LIM_REG_CLASSES; i++)
     {
       COPY_HARD_REG_SET (temp_hard_regset, reg_class_contents[i]);
       AND_COMPL_HARD_REG_SET (temp_hard_regset, no_unit_alloc_regs);