* c-ppoutput.c (scan_translation_unit): Handle CPP_PRAGMA

	and CPP_PRAGMA_EOL.
	* c-pragma.c (pragma_ns_name): New typedef.
	(registered_pp_pragmas): New variable.
	(c_pp_lookup_pragma): New function.
	(c_register_pragma_1): If flag_preprocess_only, do nothing
	for non-expanded pragmas, for expanded ones push pragma's
	namespace and name into registered_pp_pragmas vector.
	(c_invoke_pragma_handler): Register OpenMP pragmas even when
	flag_preprocess_only, don't register GCC pch_preprocess
	pragma if flag_preprocess_only.
	* c-opts.c (c_common_init): Call init_pragma even if
	flag_preprocess_only.
	* c-pragma.c (c_pp_lookup_pragma): New prototype.
	* config/darwin.h (DARWIN_REGISTER_TARGET_PRAGMAS): Don't call
	cpp_register_pragma if flag_preprocess_only.

	* gcc.dg/gomp/preprocess-1.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@132703 138bc75d-0d04-0410-961f-82ee72b054a4

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