gcc/
2010-09-05  Giuseppe Scrivano  <gscrivano@gnu.org>

	* tree-tailcall.c (process_assignment): Handle NEGATE_EXPR and
	MINUS_EXPR.

gcc/testsuite/
2010-09-05  Giuseppe Scrivano  <gscrivano@gnu.org>

	* gcc.dg/tree-ssa/tailrecursion-7.c: New file.

From-SVN: r163888