[AArch64] Give some new costs for Cortex-A57 floating-point operations

gcc/

	* config/arm/aarch-cost-tables.h (cortexa57_extra_costs): Make FP
	costs relative to the cost of a register move.

From-SVN: r237601

gcc/ChangeLog

+2016-06-20  James Greenhalgh  <james.greenhalgh@arm.com>
+
+	* config/arm/aarch-cost-tables.h (cortexa57_extra_costs): Make FP
+	costs relative to the cost of a register move.
+
 2016-06-20  Wilco Dijkstra  <wdijkstr@arm.com>
 
 	* config/aarch64/aarch64.c (aarch64_modes_tieable_p):

gcc/config/arm/aarch-cost-tables.h

@@ -294,35 +294,35 @@ const struct cpu_cost_table cortexa57_extra_costs =
   {
     /* FP SFmode */
     {
-      COSTS_N_INSNS (17),      /* div.  */
-      COSTS_N_INSNS (5),       /* mult.  */
-      COSTS_N_INSNS (9),       /* mult_addsub. */
-      COSTS_N_INSNS (9),       /* fma.  */
-      COSTS_N_INSNS (4),       /* addsub.  */
-      COSTS_N_INSNS (2),       /* fpconst. */
-      COSTS_N_INSNS (2),       /* neg.  */
-      COSTS_N_INSNS (2),       /* compare.  */
-      COSTS_N_INSNS (4),       /* widen.  */
-      COSTS_N_INSNS (4),       /* narrow.  */
-      COSTS_N_INSNS (4),       /* toint.  */
-      COSTS_N_INSNS (4),       /* fromint.  */
-      COSTS_N_INSNS (4)        /* roundint.  */
+      COSTS_N_INSNS (6),      /* div.  */
+      COSTS_N_INSNS (1),       /* mult.  */
+      COSTS_N_INSNS (2),       /* mult_addsub.  */
+      COSTS_N_INSNS (2),       /* fma.  */
+      COSTS_N_INSNS (1),       /* addsub.  */
+      0,		       /* fpconst.  */
+      0,		       /* neg.  */
+      0,		       /* compare.  */
+      COSTS_N_INSNS (1),       /* widen.  */
+      COSTS_N_INSNS (1),       /* narrow.  */
+      COSTS_N_INSNS (1),       /* toint.  */
+      COSTS_N_INSNS (1),       /* fromint.  */
+      COSTS_N_INSNS (1)        /* roundint.  */
     },
     /* FP DFmode */
     {
-      COSTS_N_INSNS (31),      /* div.  */
-      COSTS_N_INSNS (5),       /* mult.  */
-      COSTS_N_INSNS (9),       /* mult_addsub.  */
-      COSTS_N_INSNS (9),       /* fma.  */
-      COSTS_N_INSNS (4),       /* addsub.  */
-      COSTS_N_INSNS (2),       /* fpconst.  */
-      COSTS_N_INSNS (2),       /* neg.  */
-      COSTS_N_INSNS (2),       /* compare.  */
-      COSTS_N_INSNS (4),       /* widen.  */
-      COSTS_N_INSNS (4),       /* narrow.  */
-      COSTS_N_INSNS (4),       /* toint.  */
-      COSTS_N_INSNS (4),       /* fromint.  */
-      COSTS_N_INSNS (4)        /* roundint.  */
+      COSTS_N_INSNS (11),      /* div.  */
+      COSTS_N_INSNS (1),       /* mult.  */
+      COSTS_N_INSNS (2),       /* mult_addsub.  */
+      COSTS_N_INSNS (2),       /* fma.  */
+      COSTS_N_INSNS (1),       /* addsub.  */
+      0,		       /* fpconst.  */
+      0,		       /* neg.  */
+      0,		       /* compare.  */
+      COSTS_N_INSNS (1),       /* widen.  */
+      COSTS_N_INSNS (1),       /* narrow.  */
+      COSTS_N_INSNS (1),       /* toint.  */
+      COSTS_N_INSNS (1),       /* fromint.  */
+      COSTS_N_INSNS (1)        /* roundint.  */
     }
   },
   /* Vector */