From c270038da4551bed55d36f8b51337a03bce0e1b2 Mon Sep 17 00:00:00 2001
From: ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 24 May 2011 22:29:40 +0000
Subject: [PATCH] 	* config/sparc/sparc.c (sparc_option_override): If not set by the user,
 	force flag_ira_share_save_slots to 0.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@174149 138bc75d-0d04-0410-961f-82ee72b054a4

index 8ad374a..c6a2047 100644
--- a/gcc/config/sparc/sparc.c
+++ b/gcc/config/sparc/sparc.c
@@ -970,6 +970,12 @@ sparc_option_override (void)
 			  ? 64 : 32),
 			 global_options.x_param_values,
 			 global_options_set.x_param_values);
+
+  /* Disable save slot sharing for call-clobbered registers by default.
+     The IRA sharing algorithm works on single registers only and this
+     pessimizes for double floating-point registers.  */
+  if (!global_options_set.x_flag_ira_share_save_slots)
+    flag_ira_share_save_slots = 0;
 }
 
 /* Miscellaneous utilities.  */
-- 
1.7.0.4