[AArch64] Handle FLOAT and UNSIGNED_FLOAT in rtx costs

	* config/aarch64/aarch64.c (aarch64_rtx_costs): Handle FLOAT and
	UNSIGNED_FLOAT.

From-SVN: r222677

gcc/ChangeLog

+2015-05-01  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* config/aarch64/aarch64.c (aarch64_rtx_costs): Handle FLOAT and
+	UNSIGNED_FLOAT.
+
 2015-05-01  Wilco Dijkstra  <wdijkstr@arm.com>
 
 	* gcc/config/aarch64/aarch64.c (aarch64_rtx_costs):

gcc/config/aarch64/aarch64.c

@@ -6405,6 +6405,12 @@ cost_plus:
       *cost += rtx_cost (op2, FMA, 2, speed);
       return true;
 
+    case FLOAT:
+    case UNSIGNED_FLOAT:
+      if (speed)
+	*cost += extra_cost->fp[mode == DFmode].fromint;
+      return false;
+
     case FLOAT_EXTEND:
       if (speed)
 	*cost += extra_cost->fp[mode == DFmode].widen;