[PATCH] D156801: [RISCV] Improve codegen for i8/i16 'atomicrmw xchg a, {0,-1}'

[Alex Bradbury via Phabricator via llvm-commits]

asb updated this revision to Diff 546134.

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D156801/new/

https://reviews.llvm.org/D156801

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/test/CodeGen/RISCV/atomic-rmw.ll

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