[all-commits] [llvm/llvm-project] 031fb7: [AArch64][SME] Preserve `Chain` when selecting mul...

[Benjamin Maxwell via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 031fb7414fd6edf20e0cd7f7783666313169a0d2
      https://github.com/llvm/llvm-project/commit/031fb7414fd6edf20e0cd7f7783666313169a0d2
  Author: Benjamin Maxwell <benjamin.maxwell at arm.com>
  Date:   2025-10-02 (Thu, 02 Oct 2025)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelDAGToDAG.cpp
    M llvm/test/CodeGen/AArch64/pr161420.ll
    M llvm/test/CodeGen/AArch64/sme2-intrinsics-luti4-lane-x4.ll
    M llvm/test/CodeGen/AArch64/sme2-intrinsics-luti4.ll

  Log Message:
  -----------
  [AArch64][SME] Preserve `Chain` when selecting multi-vector LUT4Is (#161494)

Previously, the `Chain` was dropped meaning LUTI4 nodes that only
differed in the chain operand would be incorrectly CSE'd.

Fixes: #161420



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