tree-ssa-dce.c (simple_dce_from_worklist): Move and rename from tree-ssa-pre.c::remov...

tree-ssa-dce.c (simple_dce_from_worklist): Move and rename from tree-ssa-pre.c::remove_dead_inserted_code.

2017-11-28  Bin Cheng  <bin.cheng@arm.com>

	* tree-ssa-dce.c (simple_dce_from_worklist): Move and rename from
	tree-ssa-pre.c::remove_dead_inserted_code.
	* tree-ssa-dce.h: New file.
	* tree-ssa-pre.c (tree-ssa-dce.h): Include new header file.
	(remove_dead_inserted_code): Move and rename to function
	tree-ssa-dce.c::simple_dce_from_worklist.
	(pass_pre::execute): Update use.

From-SVN: r255206