[PATCH] D147692: [LoongArch] Optimize multiplication with immediates

[Ben Shi via Phabricator via llvm-commits]

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Optimize (mul x, imm) to (ADD/SUB (SLLI x, s0), (SLLI x, s1))
if possible.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D147692

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

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