re PR rtl-optimization/40956 (Constants are never candidates for hoisting)

	PR rtl-optimization/40956
	* config/arm/arm.c (thumb1_size_rtx_costs): Fix cost of simple
	constants.

From-SVN: r162596

gcc/ChangeLog

 2010-07-27  Maxim Kuvyrkov  <maxim@codesourcery.com>
 
+	PR rtl-optimization/40956
+	* config/arm/arm.c (thumb1_size_rtx_costs): Fix cost of simple
+	constants.
+
+2010-07-27  Maxim Kuvyrkov  <maxim@codesourcery.com>
+
 	PR target/42495
 	PR middle-end/42574
 	* config/arm/arm.c (legitimize_pic_address): Use

gcc/config/arm/arm.c

@@ -7013,7 +7013,7 @@ thumb1_size_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer)
       if (outer == SET)
         {
           if ((unsigned HOST_WIDE_INT) INTVAL (x) < 256)
-            return 0;
+            return COSTS_N_INSNS (1);
 	  /* See split "TARGET_THUMB1 && satisfies_constraint_J".  */
 	  if (INTVAL (x) >= -255 && INTVAL (x) <= -1)
             return COSTS_N_INSNS (2);