tree-ssa-structalias.c (solve_graph): Handle case we merged the variable to another.

2007-01-26  Daniel Berlin  <dberlin@dberlin.org>
	Richard Guenther  <rguenther@suse.de>

	* tree-ssa-structalias.c (solve_graph): Handle case
	we merged the variable to another.

Co-Authored-By: Richard Guenther <rguenther@suse.de>

From-SVN: r121202

gcc/ChangeLog

+2007-01-26  Daniel Berlin  <dberlin@dberlin.org>
+	Richard Guenther  <rguenther@suse.de>
+
+	* tree-ssa-structalias.c (solve_graph): Handle case
+	we merged the variable to another.
+
 2007-01-25  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
 
 	* builtins.c (fold_builtin_1): Treat ccos and ccosh as 'even'

gcc/tree-ssa-structalias.c

@@ -2051,9 +2051,10 @@ solve_graph (constraint_graph_t graph)
 	  if (find (i) != i)
 	    continue;
 
-	  eliminate_indirect_cycles (i);
-
-	  gcc_assert (find (i) == i);
+	  /* In certain indirect cycle cases, we may merge this
+	     variable to another.  */
+	  if (eliminate_indirect_cycles (i) && find(i) != i)
+	    continue;
 
 	  /* If the node has changed, we need to process the
 	     complex constraints and outgoing edges again.  */