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* tree-pretty-print.c (dump_generic_node): Dump OMP_SECTIONS_SWITCH. Display new operands of OMP_SECTIONS and OMP_CONTINUE. * tree.h (OMP_SECTIONS_CONTROL): New macro. (OMP_DIRECTIVE_P): Add OMP_SECTIONS_SWITCH. * omp-low.c (get_ws_args_for, determine_parallel_type, expand_omp_for_generic, expand_omp_for_static_nochunk, expand_omp_for_static_chunk, expand_omp_for, expand_omp_sections): Work with more precise CFG. (build_omp_regions_1): Handle OMP_SECTIONS_SWITCH. (lower_omp_sections): Emit OMP_SECTIONS_SWITCH. Add arguments to OMP_CONTINUE. * tree-gimple.c (is_gimple_stmt): Handle OMP_SECTIONS_SWITCH. * gimple-low.c (lower_stmt): Ditto. * tree-inline.c (estimate_num_insns_1): Ditto. * tree.def (OMP_SECTIONS, OMP_CONTINUE): Added new operands. (OMP_SECTIONS_SWITCH): New. * tree-cfgcleanup.c (cleanup_omp_return): New. (cleanup_tree_cfg_bb): Call cleanup_omp_return. * tree-cfg.c (make_edges): Create back edges for OMP_CONTINUE and exit edge for OMP_FOR. Handle OMP_SECTIONS_SWITCH. (tree_redirect_edge_and_branch): Handle omp constructs. * fortran/trans-openmp.c (gfc_trans_omp_sections): Build OMP_SECTIONS with three arguments. From-SVN: r127121
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