[PATCH] D140282: [LoongArch] Break MUL into SLLI and SUB or ADD

[Gong LingQin via Phabricator via llvm-commits]

gonglingqin created this revision.
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Further, after MUL is decomposed, use ALSL instead of SLLI and ADD


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D140282

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

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