Chris Lattner e941291a7a Initial checkin of PRE on LLVM. This implementation is still lacking in
several ways:

 * Load expressions are not PRE'd well.  Alias Analysis should be used to
   get accurate information when computing anticipatibility.
 * The expression collection implementation does not handle PHI nodes properly,
   thus the implementation misses many opportunities to PRE.
 * This code could be sped up quite a bit

Despite these flaws, the code seems to work well, and handles PR's as one
would expect.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5759 91177308-0d34-0410-b5e6-96231b3b80d8
2003-03-31 19:55:43 +00:00
..
2003-03-06 16:37:29 +00:00
2003-03-27 17:57:44 +00:00
2003-02-25 21:14:59 +00:00
2003-03-27 17:57:44 +00:00
2003-03-21 21:41:02 +00:00