[all-commits] [llvm/llvm-project] bd861d: [AArch64] Add some basic patterns for qshrn.

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: bd861d0e690cfd05184d86e954289cccfec97e92
      https://github.com/llvm/llvm-project/commit/bd861d0e690cfd05184d86e954289cccfec97e92
  Author: David Green <david.green at arm.com>
  Date:   2024-10-21 (Mon, 21 Oct 2024)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    M llvm/test/CodeGen/AArch64/qshrn.ll

  Log Message:
  -----------
  [AArch64] Add some basic patterns for qshrn.

With the truncssat nodes these are relatively simple tablegen patterns to add.
The existing intrinsics are converted to shift+truncsat to they can lower using
the new patterns.

Fixes #112925.



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