From: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Fri, 23 Apr 2010 15:46:23 +0000 (+0000)
Subject: 2010-04-23  Richard Guenther  <rguenther@suse.de>
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8081b5e747a61d4cf3dd97bbbf7368498a3f99be;p=thirdparty%2Fgcc.git

2010-04-23  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/43572
	* tree-tailcall.c (find_tail_calls): Allow PARM_DECL uses.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@158671 138bc75d-0d04-0410-961f-82ee72b054a4
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 586f1e6b6705..c7eecfb50f58 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2010-04-23  Richard Guenther  <rguenther@suse.de>
+
+	PR tree-optimization/43572
+	* tree-tailcall.c (find_tail_calls): Allow PARM_DECL uses.
+
 2010-04-23  Richard Guenther  <rguenther@suse.de>
 
 	PR lto/43455
diff --git a/gcc/tree-tailcall.c b/gcc/tree-tailcall.c
index 4d2422aa6237..a9f01919b4d5 100644
--- a/gcc/tree-tailcall.c
+++ b/gcc/tree-tailcall.c
@@ -458,7 +458,8 @@ find_tail_calls (basic_block bb, struct tailcall **ret)
      to local variables.  */
   FOR_EACH_REFERENCED_VAR (var, rvi)
     {
-      if (!is_global_var (var)
+      if (TREE_CODE (var) != PARM_DECL
+	  && auto_var_in_fn_p (var, cfun->decl)
 	  && ref_maybe_used_by_stmt_p (call, var))
 	return;
     }