* Makefile.in (OBJC-common): Add tree-ssa-threadupdate.c
(tree-ssa-threadupdate.o): Add dependencies.
* tree-ssa-threadupdate.c: New file.
* tree-flow.h (incoming_edge_threaded): New flag in block annotation.
(rewrite_vars_out_of_ssa): Remove prototype.
(cleanup_tree_cfg): Returns a bool.
* tree.h (thread_through_all_blocks): Prototype.
* tree-outof-ssa.c (SSANORM_*): Move into here.
(remove_ssa_form): Now static.
(rewrite_vars_out_of_ssa): Kill.
* tree-ssa-live.c (register_ssa_partitions_for_vars): Kill.
* tree-ssa-live.h (SSANORM_*): Moved into tree-outof-ssa.c.
(remove_ssa_form, register_partitions_for_vars): Kill declarations.
* tree-cfg.c (cleanup_tree_cfg): Return a value indicating if
anything was changed.
* tree-phinodes.c (add_phi_arg): Get the block for the PHI
from the PHI's annotation rather than the edge associated with
the new argument.
* tree-ssa-dom.c (redirection_edges): Kill.
(redirect_edges_and_update_ssa_graph): Kill.
(tree_ssa_dominator_optimize): Do not reset forwardable flag
for blocks anymore. Do not initialize redirection_edges.
Call thread_through_all_blocks. Simplify code for cleanup
of the CFG and iterating. No longer call cleanup_tree_cfg
outside the iteration loop.
(thread_across_edge): No longer mess with forwardable blocks.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@85721 138bc75d-0d04-0410-961f-82ee72b054a4