[MachineOutliner] Fix offset overflow check
The offset overflow check before was incorrect. It would always give the
correct result, but it was comparing the SCALED potential fixed-up offset
against an UNSCALED minimum/maximum. As a result, the outliner was missing a
bunch of frame setup/destroy instructions that ought to have been safe to
outline. This fixes that, and adds an instruction to the .mir test that
failed the old test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320090
91177308-0d34-0410-b5e6-
96231b3b80d8
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