Chandler Carruth 2274f74c92 [PM] Relax asserts and always try to reconstruct loop simplify form when
we can while splitting critical edges.

The only code which called this and didn't require simplified loops to
be preserved is polly, and the code behaves correctly there anyways.
Without this change, it becomes really hard to share this code with the
new pass manager where things like preserving loop simplify form don't
make any sense.

If anyone discovers this code behaving incorrectly, what it *should* be
testing for is whether the loops it needs to be in simplified form are
in fact in that form. It should always be trying to preserve that form
when it exists.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226443 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-19 10:23:00 +00:00
..