* Makefile.in: Add ipcp.c, ipa-prop.h, ipa-prop.c. Remove integrate.h
	dependency from tree-inline.o.
	Add ipa-prop.h dependency to tree-inline.o and cgraphunit.o.
        * common.opt: Add ipa-cp flag.
        * timevar.def: Add IPCP optimization.
        * tree-optimize.c (init_tree_optimization_passes): Schedule
	pass_ipa_cp.
	* tree-pass.h (pass_ipa_cp): Declare.
        * cgraph.h (update_call_expr, cgraph_copy_node_for_versioning,
        cgraph_function_versioning): New declarations.
	* cgraphunit.c: Add include to ipa-prop.h.
        (update_call_expr, cgraph_copy_node_for_versioning,
	cgraph_function_versioning): New functions.
        * integrate.c (copy_decl_for_inlining): Remove.
        * tree-inline.c: Remove include to integrate.h, Add include ipa-prop.h.
        (struct inline_data): Add versioning_p, ipa_info, new fields.
        (remap_decl, mark_local_for_remap_r, setup_one_parameter,
	declare_return_variable): Replace calls to copy_decl_for_inlining with
        copy_decl_for_dup.
        (copy_body_r, copy_bb, copy_cfg_body, copy_tree_r, inlining_p): Add
	versioning support.
        (copy_decl_for_dup): Rename from copy_decl_for_inlining.
	Add argument VERSIONING.
        (copy_arguments_for_versioning, copy_static_chain,
	function_versionable_p, tree_versionable_function_p,
	tree_function_versioning, replace_ref_tree): New functions.
	* tree-inline.h: Include varray.h.
        (tree_versionable_function_p,  tree_function_versioning,
	tree copy_decl_for_dup): New declarations.

From-SVN: r102625