[PATCH] D138529: [AVR] Optimize constant 32-bit shifts

[Ben Shi via Phabricator via llvm-commits]

benshi001 added a comment.

For your commit message, I think the front part is OK, and the other part from `Future patches can improve on this:` till the end needs not to be committed.


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  https://reviews.llvm.org/D138529/new/

https://reviews.llvm.org/D138529