Allow new/delete operator deletion only for replaceable.

Allow new/delete operator deletion only for replaceable.

	PR c++/94314
	* gimple.c (gimple_call_operator_delete_p): Rename to...
	(gimple_call_replaceable_operator_delete_p): ... this.
	Use DECL_IS_REPLACEABLE_OPERATOR_DELETE_P.
	* gimple.h (gimple_call_operator_delete_p): Rename to ...
	(gimple_call_replaceable_operator_delete_p): ... this.
	* tree-core.h (tree_function_decl): Add replaceable_operator
	flag.
	* tree-ssa-dce.c (mark_all_reaching_defs_necessary_1):
	Use DECL_IS_REPLACEABLE_OPERATOR_DELETE_P.
	(propagate_necessity): Use gimple_call_replaceable_operator_delete_p.
	(eliminate_unnecessary_stmts): Likewise.
	* tree-streamer-in.c (unpack_ts_function_decl_value_fields):
	Pack DECL_IS_REPLACEABLE_OPERATOR.
	* tree-streamer-out.c (pack_ts_function_decl_value_fields):
	Unpack the field here.
	* tree.h (DECL_IS_REPLACEABLE_OPERATOR): New.
	(DECL_IS_REPLACEABLE_OPERATOR_NEW_P): New.
	(DECL_IS_REPLACEABLE_OPERATOR_DELETE_P): New.
	* cgraph.c (cgraph_node::dump): Dump if an operator is replaceable.
	* ipa-icf.c (sem_item::compare_referenced_symbol_properties): Compare
	replaceable operator flags.
	PR c++/94314
	* decl.c (duplicate_decls): Duplicate also DECL_IS_REPLACEABLE_OPERATOR.
	(cxx_init_decl_processing): Mark replaceable all implicitly defined
	operators.
	PR c++/94314
	* lto-common.c (compare_tree_sccs_1): Compare also
	DECL_IS_REPLACEABLE_OPERATOR.
	PR c++/94314
	* g++.dg/pr94314-2.C: New test.
	* g++.dg/pr94314-3.C: New test.
	* g++.dg/pr94314.C: New test.