re PR middle-end/26084 (ICE (segfault) on C++ OpenMP code)
PR middle-end/26084
* except.c (duplicate_eh_regions_0): New.
(duplicate_eh_region_1): Duplicate the children of the node as
well as the node itself. Link them up properly.
(duplicate_eh_region_2): Merge into ...
(duplicate_eh_regions): ... here. Take copy_region argument, and
copy only a sub-tree if asked. Simplify copying and fixup.
(eh_region_outer_p): New.
* except.h (duplicate_eh_regions): Update decl.
(eh_region_outer_p): Declare.
* omp-low.c (lower_omp_single): Fix eh region placement wrt OMP_RETURN.
(lower_omp_master): Likewise.
(lower_omp_ordered): Likewise.
* tree-cfg.c (struct move_stmt_d): Add new_label_map.
(move_stmt_r): Use it to remap labels. Handle recursion vs
remap_decls_p properly.
(move_block_to_fn): Pass in new_label_map. Remap RESX_EXPR.
(find_outermost_region_in_block): New.
(new_label_mapper): New.
(move_sese_region_to_fn): Copy eh information to the new function
properly.
* tree-inline.c (copy_cfg_body): Update for new duplicate_eh_regions
argument.
* tree-pretty-print.c (dump_generic_node): Dump RESX_EXPR region
number.