[PATCH] D67348: [RISCV] Add codegen pattern matching for bit manipulation assembly instructions.

[Paolo Savini via Phabricator via llvm-commits]

PaoloS updated this revision to Diff 222842.
PaoloS added a comment.

Added matching of LLVM bit manipulation instrinsics like bswap, bitreverse, fshl and fshr to the corresponding asm instructions in the RISC-V bit manipulation ISA extension. Added codegen tests accordingly. Added codegen tests for the intrinsics ctlz, cttz and ctpop, to check that they are matched with the assembly instructions clz, ctz and pcnt.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D67348/new/

https://reviews.llvm.org/D67348

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/lib/Target/RISCV/RISCVInstrInfoB.td
  llvm/test/CodeGen/RISCV/rv32Zbb.ll
  llvm/test/CodeGen/RISCV/rv32Zbbp.ll
  llvm/test/CodeGen/RISCV/rv32Zbf.ll
  llvm/test/CodeGen/RISCV/rv32Zbp.ll
  llvm/test/CodeGen/RISCV/rv32Zbs.ll
  llvm/test/CodeGen/RISCV/rv32Zbt.ll
  llvm/test/CodeGen/RISCV/rv64Zbb.ll
  llvm/test/CodeGen/RISCV/rv64Zbbp.ll
  llvm/test/CodeGen/RISCV/rv64Zbf.ll
  llvm/test/CodeGen/RISCV/rv64Zbp.ll
  llvm/test/CodeGen/RISCV/rv64Zbs.ll
  llvm/test/CodeGen/RISCV/rv64Zbt.ll

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