[all-commits] [llvm/llvm-project] defbbf: [RISCV][MoveMerge] Don't copy kill flag when movin...

[Craig Topper via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: defbbf0129d5c1ac360c6ffd9eaa2f07ab07d622
      https://github.com/llvm/llvm-project/commit/defbbf0129d5c1ac360c6ffd9eaa2f07ab07d622
  Author: Craig Topper <craig.topper at sifive.com>
  Date:   2025-08-14 (Thu, 14 Aug 2025)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVMoveMerger.cpp
    A llvm/test/CodeGen/RISCV/pr153598.mir

  Log Message:
  -----------
  [RISCV][MoveMerge] Don't copy kill flag when moving past an instruction that reads the register. (#153644)

If we're moving the second copy before another instruction that reads
the copied register, we need to clear the kill flag on the combined
move.

Fixes #153598.



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