[PATCH] D104507: [RISCV][test] Add new tests for add-mul optimization in the zba extension with SH*ADD

[Ben Shi via Phabricator via llvm-commits]

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These tests will show the following optimization by future patches.

Rx + Ry * 18  => (SH1ADD (SH3ADD Rx, Rx), Ry)
Rx + Ry * 20  => (SH2ADD (SH2ADD Rx, Rx), Ry)
Rx + Ry * 24  => (SH3ADD (SH1ADD Rx, Rx), Ry)
Rx + Ry * 36  => (SH2ADD (SH3ADD Rx, Rx), Ry)
Rx + Ry * 40  => (SH3ADD (SH2ADD Rx, Rx), Ry)
Rx + Ry * 72  => (SH3ADD (SH3ADD Rx, Rx), Ry)
Rx * (3 << C) => (SLLI (SH1ADD Rx, Rx), C
Rx * (5 << C) => (SLLI (SH2ADD Rx, Rx), C
Rx * (9 << C) => (SLLI (SH3ADD Rx, Rx), C


Repository:
  rZORG LLVM Github Zorg

https://reviews.llvm.org/D104507

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

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