[all-commits] [llvm/llvm-project] d64459: [GlobalISel] Add computeNumSignBits for G_SHUFFLE_...

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: d644597f57050d575212bd7b20abad892a07e6de
      https://github.com/llvm/llvm-project/commit/d644597f57050d575212bd7b20abad892a07e6de
  Author: David Green <david.green at arm.com>
  Date:   2025-05-20 (Tue, 20 May 2025)

  Changed paths:
    M llvm/lib/CodeGen/GlobalISel/GISelValueTracking.cpp
    M llvm/test/CodeGen/AArch64/GlobalISel/knownbits-shuffle.mir
    M llvm/test/CodeGen/AArch64/aarch64-dup-ext.ll
    M llvm/test/CodeGen/AArch64/aarch64-matrix-umull-smull.ll

  Log Message:
  -----------
  [GlobalISel] Add computeNumSignBits for G_SHUFFLE_VECTOR (#139505)

The code is similar to computeKnownBits and the code in
SelectionDAG::ComputeNumSignBits.



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