[PATCH] D79768: [ARM] Exclude LR from register classes in low overhead loops

[Sam Parker via Phabricator via llvm-commits]

samparker added a comment.

> Architecturally the loop info is created when you execute an LE and cleared when you otherwise write to LR.

Erm, reference for that? Because I certainly don't remember it.


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  https://reviews.llvm.org/D79768/new/

https://reviews.llvm.org/D79768