[arm] Reduce usage of arm_selected_cpu.

Make more use of the new data structure for initializing existing
variables.

	* arm.c (arm_option_override): Use arm_active_target as source of
	information for arm_base_arch and arm_arch_name.
	* (arm_file_start): Use arm_active_target for core name.

From-SVN: r243700

gcc/ChangeLog

 2016-12-15  Richard Earnshaw  <rearnsha@arm.com>
 
+	* arm.c (arm_option_override): Use arm_active_target as source of
+	information for arm_base_arch and arm_arch_name.
+	* (arm_file_start): Use arm_active_target for core name.
+
+2016-12-15  Richard Earnshaw  <rearnsha@arm.com>
+
 	* arm.c (arm_selected_tune): Delete static variable.
 	(arm_selected_arch): Likewise.
 	(arm_configure_build_target): Declare local versions of arm_selected

gcc/config/arm/arm.c

@@ -3276,9 +3276,9 @@ arm_option_override (void)
   SUBTARGET_OVERRIDE_OPTIONS;
 #endif
 
-  sprintf (arm_arch_name, "__ARM_ARCH_%s__", arm_selected_cpu->arch);
+  sprintf (arm_arch_name, "__ARM_ARCH_%s__", arm_active_target.arch_pp_name);
   insn_flags = arm_selected_cpu->flags;
-  arm_base_arch = arm_selected_cpu->base_arch;
+  arm_base_arch = arm_active_target.base_arch;
 
   arm_tune = arm_active_target.tune_core;
   tune_flags = arm_active_target.tune_flags;
@@ -26012,12 +26012,13 @@ arm_file_start (void)
 			     arm_active_target.arch_name);
 	    }
         }
-      else if (strncmp (arm_selected_cpu->name, "generic", 7) == 0)
-	asm_fprintf (asm_out_file, "\t.arch %s\n", arm_selected_cpu->name + 8);
+      else if (strncmp (arm_active_target.core_name, "generic", 7) == 0)
+	asm_fprintf (asm_out_file, "\t.arch %s\n",
+		     arm_active_target.core_name + 8);
       else
 	{
 	  const char* truncated_name
-	    = arm_rewrite_selected_cpu (arm_selected_cpu->name);
+	    = arm_rewrite_selected_cpu (arm_active_target.core_name);
 	  asm_fprintf (asm_out_file, "\t.cpu %s\n", truncated_name);
 	}