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2274f74c92
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
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