2014-05-15  Zhenqiang Chen  <zhenqiang.chen@linaro.org>

	* shrink-wrap.h: Update comment.
	* shrink-wrap.c: Update comment.
	(next_block_for_reg): Rename to live_edge_for_reg.
	(live_edge_for_reg): Allow live_edge->dest has two predecessors.
	(move_insn_for_shrink_wrap): Split live_edge.
	(prepre_shrink_wrap): One more parameter for move_insn_for_shrink_wrap.

From-SVN: r210457