With the last change, we no longer need both directions of mapping from
BBNumbers.  Instead of using a bi-directional mapping, just use a single
densemap.  This speeds up mem2reg on 176.gcc by 8%, from  1.3489 to
1.2485s.

llvm-svn: 33940
1 file changed
tree: 5b975fc5b19a23d8cab02f009ed3c66fcdfdf818
  1. llvm/
  2. stacker/