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[MachineCopyPropagation] Refactor copy tracking into a class. NFC
authorJustin Bogner <mail@justinbogner.com>
Fri, 21 Sep 2018 00:51:04 +0000 (00:51 +0000)
committerJustin Bogner <mail@justinbogner.com>
Fri, 21 Sep 2018 00:51:04 +0000 (00:51 +0000)
commit97eaa64e596d2f10ab1481bf856cd70872774c89
tree9339457cdf02cb6283100052b7e088340821ff39
parent5b1329de30669ab18bf56f829c4b6ea426ec6261
[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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@342703 91177308-0d34-0410-b5e6-96231b3b80d8
lib/CodeGen/MachineCopyPropagation.cpp