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3710416022
This adds the last remaining core feature of the loop pass pipeline in the new PM and removes the last of the really egregious hacks in the LICM tests. Sadly, this requires really substantial changes in the unittests in order to provide and maintain simplified loops. This is particularly hard because for example LoopSimplify will try to fold undef branches to an ideal direction and simplify the loop accordingly. Differential Revision: https://reviews.llvm.org/D28766 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292709 91177308-0d34-0410-b5e6-96231b3b80d8