* c-pragma.c (c_pp_lookup_pragma): Handle PRAGMA_CILK_SIMD.
	(init_pragma): Call cpp_register_deferred_pragma for PRAGMA_CILK_SIMD
	even when flag_preprocess_only.

	* c-c++-common/cilk-plus/PS/vectorlength-2.c: New test.
	* c-c++-common/cilk-plus/PS/vectorlength-3.c: New test.

From-SVN: r208268