i386: Identify Westmere from PCLMUL

Since AES has been removed from Westmere in GCC 9, we should identify
Westmere from PCLMUL, instead of AES.

	PR target/89455
	* config/i386/i386.c (get_builtin_code_for_version): Identify
	Westmere from PCLMUL, instead of AES.

From-SVN: r269281

gcc/ChangeLog

+2019-02-28  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/89455
+	* config/i386/i386.c (get_builtin_code_for_version): Identify
+	Westmere from PCLMUL, instead of AES.
+
 2019-02-28  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/89434

gcc/config/i386/i386.c

@@ -31992,10 +31992,10 @@ get_builtin_code_for_version (tree decl, tree *predicate_list)
 	      priority = P_PROC_SSSE3;
 	      break;
 	    case PROCESSOR_NEHALEM:
-	      if (new_target->x_ix86_isa_flags & OPTION_MASK_ISA_AES)
+	      if (new_target->x_ix86_isa_flags & OPTION_MASK_ISA_PCLMUL)
 		{
 		  arg_str = "westmere";
-		  priority = P_AES;
+		  priority = P_PCLMUL;
 		}
 	      else
 		{