rs6000.c (rs6000_register_move_cost): Make LR/CTR moves expensive on Power7 also.

        * config/rs6000/rs6000.c (rs6000_register_move_cost): Make LR/CTR
        moves expensive on Power7 also.

From-SVN: r174292

gcc/ChangeLog

+2011-05-26  Pat Haugen <pthaugen@us.ibm.com>
+
+	* config/rs6000/rs6000.c (rs6000_register_move_cost): Make LR/CTR
+	moves expensive on Power7 also.
+
 2011-05-26  Richard Guenther  <rguenther@suse.de>
 
 	* fold-const.c (fold_unary_loc): Remove bogus code.

gcc/config/rs6000/rs6000.c

@@ -26444,9 +26444,10 @@ rs6000_register_move_cost (enum machine_mode mode,
       else if (from == CR_REGS)
 	ret = 4;
 
-      /* Power6 has slower LR/CTR moves so make them more expensive than
-	 memory in order to bias spills to memory .*/
-      else if (rs6000_cpu == PROCESSOR_POWER6
+      /* For those processors that have slow LR/CTR moves, make them more
+         expensive than memory in order to bias spills to memory .*/
+      else if ((rs6000_cpu == PROCESSOR_POWER6
+		|| rs6000_cpu == PROCESSOR_POWER7)
 	       && reg_classes_intersect_p (from, LINK_OR_CTR_REGS))
         ret = 6 * hard_regno_nregs[0][mode];