toplev.c (process_options): Do not disable -fomit-frame-pointer on a general basis if...

	* toplev.c (process_options): Do not disable -fomit-frame-pointer on a
	general basis if unwind info is requested and ACCUMULATE_OUTGOING_ARGS
	is not enabled.

From-SVN: r197186

gcc/ChangeLog

+2013-03-28  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* toplev.c (process_options): Do not disable -fomit-frame-pointer on a
+	general basis if unwind info is requested and ACCUMULATE_OUTGOING_ARGS
+	is not enabled.
+
 2013-03-27  Gerald Pfeifer  <gerald@pfeifer.com>
 
 	* doc/invoke.texi (AVR Options): Tweak link for AVR-LibC user manual.

gcc/toplev.c

@@ -1527,18 +1527,6 @@ process_options (void)
   if (!flag_stack_protect)
     warn_stack_protect = 0;
 
-  /* ??? Unwind info is not correct around the CFG unless either a frame
-     pointer is present or A_O_A is set.  Fixing this requires rewriting
-     unwind info generation to be aware of the CFG and propagating states
-     around edges.  */
-  if (flag_unwind_tables && !ACCUMULATE_OUTGOING_ARGS
-      && flag_omit_frame_pointer)
-    {
-      warning (0, "unwind tables currently require a frame pointer "
-	       "for correctness");
-      flag_omit_frame_pointer = 0;
-    }
-
   /* Address Sanitizer needs porting to each target architecture.  */
   if (flag_asan
       && (targetm.asan_shadow_offset == NULL