[PATCH] D104210: [RISCV][test] Add new tests of sh*add in the zba extension

[Ben Shi via Phabricator via llvm-commits]

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These tests will show the following optimization by future patches.

Rx + Ry * 6  => (SH1ADD (SH2ADD Rx, Ry), Ry)
Rx + Ry * 7  => (SUB (SH3ADD Rx, Ry), Ry)
Rx + Ry * 10 => (SH1ADD (SH3ADD Rx, Ry), Ry)
Rx + Ry * 12 => (SH2ADD (SH3ADD Rx, Ry), Ry)

The total mount of instructions will be reduced a lot on targets without
the M extension but with the Zba extension.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D104210

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

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