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git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206289 138bc75d-0d04-0410-961f-82ee72b054a4
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* tree-ssa-threadupdate.h: Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@205072 138bc75d-0d04-0410-961f-82ee72b054a4
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* tree-ssa-threadupdate.c (delete_thread_path): New function.
(ssa_redirect_edges, thread_block_1): Use it.
(thread_through_loop_header, mark_threaded_blocks): Likewise.
(thread_through_all_blocks, register_jump_thread): Likewise.
* tree-ssa-threadedge.c (thread_across_edge): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@204579 138bc75d-0d04-0410-961f-82ee72b054a4
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a vec. Only delete the path if we create one without successfully
registering a jump thread.
* tree-ssa-threadupdate.h (register_jump_thread): Pass in path vector
as a pointer.
* tree-ssa-threadupdate.c (threaded_edges): Remove. No longer used
(paths): New vector of jump threading paths.
(THREAD_TARGET, THREAD_TARGET2): Remove accessor macros.
(THREAD_PATH): New accessor macro for the entire thread path.
(lookup_redirection_data): Get intermediate and final outgoing edge
from the thread path.
(create_edge_and_update_destination_phis): Copy the threading path.
(ssa_fix_duplicate_block_edges): Get edges and block types from the
jump threading path.
(ssa_redirect_edges): Get edges and block types from the jump threading
path. Free the path vector.
(thread_block): Get edges from the jump threading path. Look at the
entire path to see if we thread to a loop exit. If we cancel a jump
thread request, then free the path vector.
(thread_single_edge): Get edges and block types from the jump threading
path. Free the path vector.
(thread_through_loop_header): Get edges and block types from the jump
threading path. Free the path vector.
(mark_threaded_blocks): Iterate over the vector of paths and store
the path on the appropriate edge. Get edges and block types from the
jump threading path.
(mark_threaded_blocks): Get edges and block types from the jump
threading path. Free the path vector.
(thread_through_all_blocks): Use the vector of paths rather than
a vector of 3-edge sets.
(register_jump_thread): Accept pointer to a path vector rather
than the path vector itself. Store the path vector for later use.
Simplify.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@203061 138bc75d-0d04-0410-961f-82ee72b054a4
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tree-ssa-threadupdate.h.
(register_jump_thread): Similarly.
* tree-ssa-threadupdate.h: New header file.
* tree-ssa-dom.c: Include tree-ssa-threadupdate.h.
* tree-vrp.c: Likewise.
* tree-ssa-threadedge.c: Include tree-ssa-threadupdate.h.
(thread_around_empty_blocks): Change type of path vector argument to
an edge,type pair from just an edge. Initialize both elements when
appending to a jump threading path. Tweak references to elements
appropriately.
(thread_across_edge): Similarly. Release memory for the elements
as needed.
* tree-ssa-threadupdate.c: Include tree-ssa-threadupdate.h.
(dump_jump_thread_path): New function broken out from
register_jump_thread.
(register_jump_thread): Use dump_jump_thread_path. Change type of
path vector entries. Search the path for NULL edges and dump
the path if one is found. Tweak the conversion of path to 3-edge
form to use the block copy type information embedded in the path.
* gcc.dg/tree-ssa/ssa-dom-thread-3.c: Update expected output.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@202933 138bc75d-0d04-0410-961f-82ee72b054a4
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