[PATCH] D96957: [AVR] Fix rotate instructions

[Ayke via Phabricator via llvm-commits]

aykevl created this revision.
aykevl added reviewers: dylanmckay, benshi001.
Herald added subscribers: Jim, hiraditya.
aykevl requested review of this revision.
Herald added a project: LLVM.

This patch fixes two issues:

- A minor issue in which the instructions were said to use the SREG, which is not true.
- A major issue in which invalid instructions were generated. The fix also reduce RORB from 4 to 3 instructions, so it's also a small optimization.

Both of these issues were flagged by the machine verifier.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D96957

Files:
  llvm/lib/Target/AVR/AVRExpandPseudoInsts.cpp
  llvm/lib/Target/AVR/AVRInstrInfo.td
  llvm/test/CodeGen/AVR/rot.ll

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