[AArch64 costs 6/18] Set default costs and handle vector modes.

gcc/

	* config/aarch64/aarch64.c (aarch64_rtx_costs): Set default costs.

From-SVN: r210498

gcc/ChangeLog

 2014-05-16  James Greenhalgh  <james.greenhalgh@arm.com>
+
+	* config/aarch64/aarch64.c (aarch64_rtx_costs): Set default costs.
+
+2014-05-16  James Greenhalgh  <james.greenhalgh@arm.com>
 	    Philipp Tomsich  <philipp.tomsich@theobroma-systems.com>
 
 	* config/aarch64/aarch64.c (aarch64_strip_shift_or_extend): Rename

gcc/config/aarch64/aarch64.c

@@ -4843,6 +4843,21 @@ aarch64_rtx_costs (rtx x, int code, int outer ATTRIBUTE_UNUSED,
     = aarch64_tune_params->insn_extra_cost;
   enum machine_mode mode = GET_MODE (x);
 
+  /* By default, assume that everything has equivalent cost to the
+     cheapest instruction.  Any additional costs are applied as a delta
+     above this default.  */
+  *cost = COSTS_N_INSNS (1);
+
+  /* TODO: The cost infrastructure currently does not handle
+     vector operations.  Assume that all vector operations
+     are equally expensive.  */
+  if (VECTOR_MODE_P (mode))
+    {
+      if (speed)
+	*cost += extra_cost->vect.alu;
+      return true;
+    }
+
   switch (code)
     {
     case SET: