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Avoid removing physreg uses in MachineDCE with LIS present
AbandonedPublic

Authored by rampitec on Apr 8 2019, 12:17 PM.

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Reviewers
bjope
Summary

One of OOT targets hits "Live segment doesn't end at a valid instruction"
error if physreg use is removed. I do not have a reproducer for that or
access to the target, but that seems to be reasonable to avoid removing
dead phys reg uses for the same reason as dead defs.

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