[PATCH] D159252: [LoongArch] Improve codegen for i8/i16 'atomicrmw xchg a, {0,-1}'

[hev via Phabricator via llvm-commits]

hev created this revision.
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Similar to D156801 <https://reviews.llvm.org/D156801> for RISCV.

Link: https://github.com/rust-lang/rust/pull/114034
Link: https://github.com/llvm/llvm-project/issues/64090


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D159252

Files:
  llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
  llvm/test/CodeGen/LoongArch/ir-instruction/atomicrmw.ll

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