[all-commits] [llvm/llvm-project] cf3201: [RISCV] Use X0_Pair for storing 0 using Zilsd. (#1...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: cf3201c84dae394e5766c13e0f6969ad049e8de6
      https://github.com/llvm/llvm-project/commit/cf3201c84dae394e5766c13e0f6969ad049e8de6
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2025-05-28 (Wed, 28 May 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVISelDAGToDAG.cpp
    M llvm/test/CodeGen/RISCV/zilsd.ll

  Log Message:
  -----------
  [RISCV] Use X0_Pair for storing 0 using Zilsd. (#141847)

When we're creating a Zilsd store from a split i64 value, check if both
inputs are 0 and use X0_Pair instead of a REG_SEQUENCE.



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