2008-12-30  Richard Guenther  <rguenther@suse.de>

	PR tree-optimization/38645
	* tree-ssa-ccp.c (fold_gimple_assign): Use the correct pointer
	type.
	* tree-ssa-dom.c (cprop_operand): Simplify.  Do not propagate
	volatileness changing operands.

	* gcc.dg/pr38645.c: New testcase.

From-SVN: r142967