[PATCH] D53230: [RISCV] Introduce codegen patterns for RV64M-only instructions

[Alex Bradbury via Phabricator via llvm-commits]

asb created this revision.
asb added reviewers: apazos, sabuasal.
Herald added subscribers: jocewei, PkmX, rkruppe, the_o, brucehoult, MartinMosbeck, rogfer01, mgrang, edward-jones, zzheng, shiva0217, kito-cheng, niosHD, simoncook, johnrusso, rbar.

This builds on https://reviews.llvm.org/D52977 to add RV64M support. As in https://reviews.llvm.org/D52977, some of these patterns may benefit from much more exhaustive testing.


https://reviews.llvm.org/D53230

Files:
  lib/Target/RISCV/RISCVInstrInfoM.td
  test/CodeGen/RISCV/div.ll
  test/CodeGen/RISCV/mul.ll
  test/CodeGen/RISCV/rem.ll

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