re PR middle-end/61252 (Invalid code produced for omp  simd reduction(min:var) where var is reference)

	PR middle-end/61252
	* omp-low.c (handle_simd_reference): New function.
	(lower_rec_input_clauses): Use it.  Defer adding reference
	initialization even for reduction without placeholder if in simd,
	handle it properly later on.

	* testsuite/libgomp.c++/simd-9.C: New test.

From-SVN: r210679