* tree-ssa-threadupdate.c (threaded_edges): New VEC to
hold edge pairs.
(mark_threaded_blocks, register_jump_thread): New functions.
(thread_through_all_blocks): Remove unwanted argument. No
longer rely on e->aux to communicate thread target info.
Call mark_threaded_blocks. Release the threaded_blocks
bitmap and threaded_edges vector when complete.
* tree-ssa-dom.c (struct edge_info): Remove redirection_target field.
(threaded_blocks): Remove.
(tree_ssa_dominator_optimize): Remove initialization and
finalization of threaded_blocks. Simplify call to
thread_through_all_blocks.
(thread_across_edge): Call register_jump_thread rather than
storing thread information into e->aux.
(free_all_edge_infos): Simplify now that e->aux is no longer
used to communicate with thread_through_all_blocks.
* tree-flow.h (thread_through_all_blocks): Update prototype.
(register_jump_thread): Prototype.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@109602
138bc75d-0d04-0410-961f-
82ee72b054a4