From patchwork Tue Nov 20 21:26:47 2012
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: patch to fix PR55396
From: Vladimir Makarov <vmakarov@redhat.com>
X-Patchwork-Id: 200523
Message-Id: <50ABF597.2080705@redhat.com>
To: gcc-patches <gcc-patches@gcc.gnu.org>
Date: Tue, 20 Nov 2012 16:26:47 -0500

The following patch fixes

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55396

The patch was successfully tested and bootstrapped on x886/x86-64.

Committed as rev. 193678.

2012-11-20  Vladimir Makarov  <vmakarov@redhat.com>

         PR rtl-optimization/55396
         * lra-constraints.c (get_reload_reg): Change class if it is
         different from reg class.


Index: lra-constraints.c
===================================================================
--- lra-constraints.c	(revision 193677)
+++ lra-constraints.c	(working copy)
@@ -425,7 +425,7 @@ get_reload_reg (enum op_type type, enum
 	    fprintf (lra_dump_file, "	 Reuse r%d for reload ", regno);
 	    print_value_slim (lra_dump_file, original, 1);
 	  }
-	if (rclass != new_class)
+	if (new_class != lra_get_allocno_class (regno))
 	  change_class (regno, new_class, ", change", false);
 	if (lra_dump_file != NULL)
 	  fprintf (lra_dump_file, "\n");