re PR rtl-optimization/29323 (set_nothrow_function_flags does invalid analysis on weak functions)

2006-10-10  Richard Guenther  <rguenther@suse.de>

	PR rtl-optimization/29323
	* except.c (set_nothrow_function_flags): For functions
	that do not bind local bail out early.

	* decl.c (finish_function): Set TREE_NOTHROW only for
	functions that bind local.

From-SVN: r117598

gcc/ChangeLog

+2006-10-10  Richard Guenther  <rguenther@suse.de>
+
+	PR rtl-optimization/29323
+	* except.c (set_nothrow_function_flags): For functions
+	that do not bind local bail out early.
+
 2006-10-10  Ben Elliston  <bje@au.ibm.com>
 
 	* doc/invoke.texi (RS/6000 and PowerPC Options): Add -m to the

gcc/cp/ChangeLog

+2006-10-10  Richard Guenther  <rguenther@suse.de>
+
+	PR rtl-optimization/29323
+	* decl.c (finish_function): Set TREE_NOTHROW only for
+	functions that bind local.
+
 2006-10-09  Richard Henderson  <rth@redhat.com>
 
 	Revert emutls patch.

gcc/cp/decl.c

@@ -11096,7 +11096,8 @@ finish_function (int flags)
   /* If this function can't throw any exceptions, remember that.  */
   if (!processing_template_decl
       && !cp_function_chain->can_throw
-      && !flag_non_call_exceptions)
+      && !flag_non_call_exceptions
+      && targetm.binds_local_p (fndecl))
     TREE_NOTHROW (fndecl) = 1;
 
   /* This must come after expand_function_end because cleanups might

gcc/except.c

@@ -2787,6 +2787,9 @@ set_nothrow_function_flags (void)
 {
   rtx insn;
 
+  if (!targetm.binds_local_p (current_function_decl))
+    return 0;
+
   TREE_NOTHROW (current_function_decl) = 1;
 
   /* Assume cfun->all_throwers_are_sibcalls until we encounter