* cse.c (cse_find_path): Don't wrap a gcc_assert in ENABLE_CHECKING.
(cse_extended_basic_block): When truncating a path while processing
it, make sure to clear the visited bit on the basic blocks in the
truncated part of the path.
(cse_main): Use reverse completion order, not DFS order, to walk
the CFG.
(gate_handle_cse): Revert erroneous commit of a counter.
From-SVN: r119985
