[all-commits] [llvm/llvm-project] d78f85: [GlobalISel] Fix getShuffleDemandedElts input lane...

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d78f85e46adca8a29765584e6ed8438058c18003
      https://github.com/llvm/llvm-project/commit/d78f85e46adca8a29765584e6ed8438058c18003
  Author: David Green <david.green at arm.com>
  Date:   2026-04-16 (Thu, 16 Apr 2026)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp
    A llvm/test/CodeGen/AArch64/GlobalISel/knownfpclass.ll

  Log Message:
  -----------
  [GlobalISel] Fix getShuffleDemandedElts input lanes in computeKnownFPClass (#192288)

The number of lanes needs to be for the input type, not the return, as
they can be different in GISel. This prevents an assert about invalid
shuffle mask constant from getShuffleDemandedElts.



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