c-opts.c (c_common_post_options): For -freestanding...

2014-05-06  Richard Biener  <rguenther@suse.de>

	c-family/
	* c-opts.c (c_common_post_options): For -freestanding,
	-fno-hosted and -fno-builtin disable pattern recognition
	if not enabled explicitely.

From-SVN: r210100

gcc/c-family/ChangeLog

+2014-05-06  Richard Biener  <rguenther@suse.de>
+
+	* c-opts.c (c_common_post_options): For -freestanding,
+	-fno-hosted and -fno-builtin disable pattern recognition
+	if not enabled explicitely.
+
 2014-05-02  Marek Polacek  <polacek@redhat.com>
 
 	* c.opt (Wsizeof-pointer-memaccess): Describe option.

gcc/c-family/c-opts.c

@@ -851,6 +851,12 @@ c_common_post_options (const char **pfilename)
   if (flag_objc_exceptions && !flag_objc_sjlj_exceptions)
     flag_exceptions = 1;
 
+  /* If -ffreestanding, -fno-hosted or -fno-builtin then disable
+     pattern recognition.  */
+  if (!global_options_set.x_flag_tree_loop_distribute_patterns
+      && flag_no_builtin)
+    flag_tree_loop_distribute_patterns = 0;
+
   /* -Woverlength-strings is off by default, but is enabled by -Wpedantic.
      It is never enabled in C++, as the minimum limit is not normative
      in that standard.  */