re PR rtl-optimization/30967 (Extra sign/zero extend with word comparison result)

	PR rtl-optimization/30967
	* config/rs6000/rs6000.c (rs6000_rtx_costs): Don't consider
	destination mode for the cost of scc patterns.

From-SVN: r223174

gcc/ChangeLog

+2015-05-13  Segher Boessenkool  <segher@kernel.crashing.org>
+
+	PR rtl-optimization/30967
+	* config/rs6000/rs6000.c (rs6000_rtx_costs): Don't consider
+	destination mode for the cost of scc patterns.
+
 2015-05-13  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.md (*mul<mode>3_1): Merge with *mulhi3_1

gcc/config/rs6000/rs6000.c

@@ -30640,7 +30640,7 @@ rs6000_rtx_costs (rtx x, int code, int outer_code, int opno ATTRIBUTE_UNUSED,
 		*total = COSTS_N_INSNS (2);
 	      return true;
 	    }
-	  else if (mode == Pmode)
+	  else
 	    {
 	      *total = COSTS_N_INSNS (3);
 	      return false;