nvptx.c (bb_pair_t, [...]): New types.

nvptx.c (bb_pair_t, [...]): New types.

	gcc/
	* config/nvptx/nvptx.c (bb_pair_t, bb_pair_vec_t): New types.
	(pseudo_node_t, struct bracket, bracket_vec_t): New types.
	(struct bb_sese): New struct.
	(bb_sese::~bb_sese, bb_sese::append, bb_sese::remove): New.
	(BB_GET_SESE, BB_SET_SESE): Define.
	(nvptx_sese_number, nvptx_sese_pseudo, nvptx_sese_color): New.
	(nvptx_find_sese): New.
	(nvptx_neuter_pars): Find SESE regions when optimizing.

	gcc/testsuite/
	* gcc.dg/goacc/nvptx-sese-1.c: New.

From-SVN: r230561