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[ARM] Constant fold VMOVrh

Authored by dmgreen on Sep 16 2020, 1:14 PM.



This adds simple constant folding for VMOVrh. It can help with especially with soft calling conventions, but some of the results are not optimal as we end up loading using a vldr. This can be improved in a follow up patch.

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dmgreen created this revision.Sep 16 2020, 1:14 PM
dmgreen requested review of this revision.Sep 16 2020, 1:14 PM
This revision is now accepted and ready to land.Sep 16 2020, 4:01 PM
This revision was automatically updated to reflect the committed changes.