[ARM] Handle simple SImode PLUS and MINUS cases in rtx costs

	* config/arm/arm.c (arm_new_rtx_costs, case PLUS, MINUS):
	Add cost of alu.arith in simple SImode case.

From-SVN: r217692

gcc/ChangeLog

+2014-11-18  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* config/arm/arm.c (arm_new_rtx_costs, case PLUS, MINUS):
+	Add cost of alu.arith in simple SImode case.
+
 2014-11-18  Jiong Wang  <jiong.wang@arm.com>
 
 	* lra-eliminations.c (update_reg_eliminate): Relax gcc_assert for fixed

gcc/config/arm/arm.c

@@ -9822,6 +9822,8 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code,
 	      *cost += rtx_cost (XEXP (x, 1), code, 1, speed_p);
 	      return true;
 	    }
+	  else if (speed_p)
+	    *cost += extra_cost->alu.arith;
 
 	  return false;
 	}
@@ -10057,6 +10059,9 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code,
 	      *cost += rtx_cost (XEXP (x, 0), PLUS, 0, speed_p);
 	      return true;
 	    }
+	  else if (speed_p)
+	    *cost += extra_cost->alu.arith;
+
 	  return false;
 	}