i386.c (ix86_valid_target_attribute_tree): Don't clear opts->x_ix86_isa_flags...

	* config/i386/i386.c (ix86_valid_target_attribute_tree): Don't
	clear opts->x_ix86_isa_flags, clear opts->x_ix86_isa_flags2
	instead and using = 0 instead of &= 0.

From-SVN: r242627

gcc/ChangeLog

 2016-11-19  Jakub Jelinek  <jakub@redhat.com>
 
+	* config/i386/i386.c (ix86_valid_target_attribute_tree): Don't
+	clear opts->x_ix86_isa_flags, clear opts->x_ix86_isa_flags2
+	instead and using = 0 instead of &= 0.
+
 	* config/i386/i386.c (def_builtin, def_builtin2, def_builtin_const2,
 	ix86_add_new_builtins): Formatting fixes.
 	(ix86_expand_builtin): Use || instead of && for isa vs. isa2.

gcc/config/i386/i386.c

@@ -6845,7 +6845,7 @@ ix86_valid_target_attribute_tree (tree args,
 				     | OPTION_MASK_ABI_64
 				     | OPTION_MASK_ABI_X32
 				     | OPTION_MASK_CODE16);
-	  opts->x_ix86_isa_flags &= 0;
+	  opts->x_ix86_isa_flags2 = 0;
 	}
       else if (!orig_arch_specified)
 	opts->x_ix86_arch_string = NULL;