[all-commits] [llvm/llvm-project] e4e671: [AArch64] add tests for demanded bits of multiply; ...

[Sanjay Patel via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e4e671c54fe402c72d337961b0662e4595994efb
      https://github.com/llvm/llvm-project/commit/e4e671c54fe402c72d337961b0662e4595994efb
  Author: Sanjay Patel <spatel at rotateright.com>
  Date:   2022-02-07 (Mon, 07 Feb 2022)

  Changed paths:
    A llvm/test/CodeGen/AArch64/combine-mul.ll

  Log Message:
  -----------
  [AArch64] add tests for demanded bits of multiply; NFC

This is adapted from existing tests for instcombine.
We want to keep the backend logic synchronized with
that as much as possible.

See D119139 / D119060 / D118539


  Commit: fc6bee1c11d4aa2fc591a9272edbe01dd18a650f
      https://github.com/llvm/llvm-project/commit/fc6bee1c11d4aa2fc591a9272edbe01dd18a650f
  Author: Sanjay Patel <spatel at rotateright.com>
  Date:   2022-02-07 (Mon, 07 Feb 2022)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    M llvm/test/CodeGen/AArch64/combine-mul.ll

  Log Message:
  -----------
  [SDAG] SimplifyDemandedBits - generalize fold for 2 LSB of X*X

This is translated from recent changes to the IR version of this function:
D119060
D119139


Compare: https://github.com/llvm/llvm-project/compare/f8d889a789e2...fc6bee1c11d4