[PATCH] D106647: [RISCV][test] Add new tests for mul optimization in the zba extension with SH*ADD

[Ben Shi via Phabricator via llvm-commits]

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These test will show the following optimization by future patches.

  (mul x, (power_of_2 + 2)) => (SH1ADD x, (SLLI x, bits))
  (mul x, (power_of_2 + 4)) => (SH2ADD x, (SLLI x, bits))
  (mul x, (power_of_2 + 8)) => (SH3ADD x, (SLLI x, bits))


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D106647

Files:
  llvm/test/CodeGen/RISCV/rv32zba.ll
  llvm/test/CodeGen/RISCV/rv64zba.ll

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