* ipa-param-manipulation.h (get_original_index): Declare.
	* ipa-param-manipulation.c (ipa_param_adjustments::get_original_index):
	New member function.
	* ipa-prop.c (ipcp_get_parm_bits): New function.
	* ipa-prop.h (ipcp_get_parm_bits): Declare.
	* tree-ssa-ccp.c: Include cgraph.h, alloc-pool.h, symbol-summary.h,
	ipa-utils.h and ipa-prop.h
	(get_default_value): Use ipcp_get_parm_bits.

	* gcc.dg/ipa/ipa-bit-cp.c: New testcase.
	* gcc.dg/ipa/ipa-bit-cp-1.c: New testcase.
	* gcc.dg/ipa/ipa-bit-cp-2.c: New testcase.

Co-Authored-By: Martin Jambor <mjambor@suse.cz>

From-SVN: r279523