[all-commits] [llvm/llvm-project] dd885f: [RISCV] Select unsigned bitfield extracts for XAnd...

[Jim Lin via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: dd885f1f68a2667d285113d758d3e6d868858e09
      https://github.com/llvm/llvm-project/commit/dd885f1f68a2667d285113d758d3e6d868858e09
  Author: Jim Lin <jim at andestech.com>
  Date:   2025-05-29 (Thu, 29 May 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
    M llvm/test/CodeGen/RISCV/rv32xandesperf.ll
    M llvm/test/CodeGen/RISCV/rv64xandesperf.ll
    M llvm/test/CodeGen/RISCV/rv64zba.ll

  Log Message:
  -----------
  [RISCV] Select unsigned bitfield extracts for XAndesPerf (#141398)

The XAndesPerf extension includes unsigned bitfield extraction
instruction `NDS.BFOZ`, which can extract the bits from LSB to MSB, 
places them starting at bit 0, and zero-extends the result.

The testcase includes the three patterns that can be selected as
unsigned bitfield extracts: `and`, `and+lshr` and `lshr+and`



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications