[all-commits] [llvm/llvm-project] 0e8db6: [X86] Add test coverage for #179057 (#179092)

[Simon Pilgrim via All-commits]

  Branch: refs/heads/release/22.x
  Home:   https://github.com/llvm/llvm-project
  Commit: 0e8db607e3cbc62b210fc4869b09457337fdee9c
      https://github.com/llvm/llvm-project/commit/0e8db607e3cbc62b210fc4869b09457337fdee9c
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2026-02-03 (Tue, 03 Feb 2026)

  Changed paths:
    M llvm/test/CodeGen/X86/avx512-intrinsics.ll

  Log Message:
  -----------
  [X86] Add test coverage for #179057 (#179092)

Incorrect folding of fixupimm scalar intrinsics passthrough when the
mask is known zero

(cherry picked from commit 618d71dc98df760d0c724cff6fa69b780e8c0372)


  Commit: 6e0577f5cf893b9d948b8332b9baeed352ba669c
      https://github.com/llvm/llvm-project/commit/6e0577f5cf893b9d948b8332b9baeed352ba669c
  Author: Simon Pilgrim <llvm-dev at redking.me.uk>
  Date:   2026-02-03 (Tue, 03 Feb 2026)

  Changed paths:
    M llvm/lib/Target/X86/X86ISelLowering.cpp
    M llvm/test/CodeGen/X86/avx512-intrinsics.ll

  Log Message:
  -----------
  [X86] getScalarMaskingNode - FIXUPIMM scalar ops take upper elements from second operand (#179101)

FIXUPIMMSS/SD instructions passthrough the SECOND operand upper elements, and not the first like most (2-op) instructions

Fixes #179057

(cherry picked from commit 49d2323447aec77c3d1ae8c941f3f8a126ff1480)


Compare: https://github.com/llvm/llvm-project/compare/6299a3229101...6e0577f5cf89

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