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4296ce5662
We completely skipped promotion in LICM if the loop has a preheader or dedicated exits, but not *both*. We hoist if there is a preheader, and sink if there are dedicated exits, but either hoisting or sinking can move loop invariant code out of the loop! I have no idea if this has a practical consequence. If anyone has ideas for a test case, let me know. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199966 91177308-0d34-0410-b5e6-96231b3b80d8
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