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Commit 45b3ddc5 authored by Justin Bogner's avatar Justin Bogner
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[MachineCopyPropagation] Refactor copy tracking into a class. NFC 

This is a bit easier to follow than handling the copy and src maps
directly in the pass, and will make upcoming changes to how this is
done easier to follow.

llvm-svn: 342703
parent 7b1c8168
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