[PATCH] Restore bootstrap on i686 (?)

[Richard Guenther]

This restores bootstrap for me on the single i686 box it failed
previously (it worked before on two other i686 boxes for me as well).

Bootstrapped C only sofar, I'm re-starting a full bootstrap & test now.

I'm curious if this fixes your bootstrap problems as well.

Thanks,
Richard.

2007-09-08  Richard Guenther  <rguenther@suse.de>

	* tree-tailcall.c (find_tail_calls): If we don't have aliases
	computed check stmt_ann->references_memory instead of counting
	virtual operands.

Index: tree-tailcall.c
===================================================================
--- tree-tailcall.c	(revision 128270)
+++ tree-tailcall.c	(working copy)
@@ -414,7 +414,8 @@ find_tail_calls (basic_block bb, struct 
       /* If the statement has virtual or volatile operands, fail.  */
       ann = stmt_ann (stmt);
       if (!ZERO_SSA_OPERANDS (stmt, (SSA_OP_VUSE | SSA_OP_VIRTUAL_DEFS))
-	  || ann->has_volatile_ops)
+	  || ann->has_volatile_ops
+	  || (!gimple_aliases_computed_p (cfun) && ann->references_memory))
 	return;
     }