re PR tree-optimization/36009 (PRE causes missed loop store motion, store sinking...

re PR tree-optimization/36009 (PRE causes missed loop store motion, store sinking doesn't work)

2008-05-15  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/36009
	PR tree-optimization/36204
	* tree-ssa-loop-im.c (tree-ssa-propagate.h): Include.
	(determine_invariantness_stmt): Record the loop a store is
	always executed in.
	* Makefile.in (tree-ssa-loop-im.o): Add tree-ssa-propagate.h
	dependency.

	* gcc.dg/tree-ssa/ssa-lim-5.c: New testcase.
	* gcc.dg/tree-ssa/ssa-lim-6.c: Likewise..

From-SVN: r135330