(print_c_condition): Declare.
	* read-rtl.c (ptr_loc): New structure.
	(ptr_locs, ptr_loc_obstack, joined_conditions)
	(joined_conditions_obstack): New variables.
	(leading_ptr_hash, leading_ptr_eq_p, set_rtx_ptr_loc)
	(get_rtx_ptr_loc, copy_rtx_ptr_loc, print_rtx_ptr_loc)
	(join_c_conditions, print_c_condition): New functions.
	(apply_macro_to_string): Associate the new string with the same
	source location as the old one.
	(add_condition_to_string): Use join_c_conditions.
	(read_string): Use set_rtx_ptr_loc to record a filename and line
	number for the string.
	(read_rtx): Initialize the new variables above.
	* genattrtab.c (write_test_expr, write_attr_value): Use
	print_c_condition.
	* genconditions.c (write_header): Don't define MAYBE_EVAL.  Move its
	comment above the GCC_VERSION check.
	(write_one_condition): Use print_rtx_ptr_loc and print_c_condition.
	Inline the definition of MAYBE_EVAL.
	* genemit.c (gen_expand, gen_split): Use print_rtx_ptr_loc.
	* genoutput.c (process_template): Likewise.
	* genpreds.c (write_predicate_subfunction): Likewise.
	(write_predicate_expr): Use print_c_condition.
	* genrecog.c (write_cond): Likewise.
	* gensupport.c (process_rtx): Use join_c_conditions to join the
	conditions of a define_insn_and_split.  Record a source location
	for the string after the "&&".
	(alter_test_for_insn): Use join_c_conditions.

From-SVN: r95883