Switch to a very conservative heuristic for determining when loop-unswitching
will be profitable.  This is mainly to remove some cases where excessive
unswitching would result in long compile times and/or huge generated code.

Once someone comes up with a better heuristic that avoids these cases, this
should be switched out.

llvm-svn: 28962
1 file changed
tree: 94f74aeaf8cebfa4f5b3393fcab0f4ff8243916a
  1. llvm/