[PATCH] D89047: [AVR] Optimize logic left/right shift

[Ben Shi via Phabricator via llvm-commits]

benshi001 added a comment.

The original AVR backend TD is also wrong, that it maps the bswap IR to AVR's swap instruction.

Since the IR bswap is byte level operation, which requires the minimal data type to be at least 16-bit.

But AVR's swap performs on half-byte level.


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D89047/new/

https://reviews.llvm.org/D89047