Dan Gohman d9b9ed628f Tell ScalarEvolution to forget a loop before starting to delete it.
This way ScalarEvolution can examine the loop to determine what state
it needs to update, if it chooses.

llvm-svn: 75029
2009-07-08 19:14:29 +00:00
..
2009-07-07 18:52:14 +00:00