re PR target/37633 (wrong register use on sh64)

2008-10-14  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/37633
	* ira-costs.c (ira_tune_allocno_costs_and_cover_classes): Check
	HARD_REGNO_CALL_PART_CLOBBERED.

From-SVN: r141161

gcc/ChangeLog

+2008-10-14  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR target/37633
+	* ira-costs.c (ira_tune_allocno_costs_and_cover_classes): Check
+	HARD_REGNO_CALL_PART_CLOBBERED.
+
 2008-10-15  Vladimir Makarov  <vmakarov@redhat.com>
 
 	PR middle-end/37535

gcc/ira-costs.c

@@ -1572,8 +1572,8 @@ ira_tune_allocno_costs_and_cover_classes (void)
 	      regno = ira_class_hard_regs[cover_class][j];
 	      rclass = REGNO_REG_CLASS (regno);
 	      cost = 0;
-	      /* ??? If only part is call clobbered.  */
-	      if (! ira_hard_reg_not_in_set_p (regno, mode, call_used_reg_set))
+	      if (! ira_hard_reg_not_in_set_p (regno, mode, call_used_reg_set)
+		  || HARD_REGNO_CALL_PART_CLOBBERED (regno, mode))
 		cost += (ALLOCNO_CALL_FREQ (a)
 			 * (ira_memory_move_cost[mode][rclass][0]
 			    + ira_memory_move_cost[mode][rclass][1]));