[all-commits] [llvm/llvm-project] f3bed4: [SelectionDAG] Don't over-claim alignment on vecto...

[Justin Lebar via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: f3bed426308372c70df7565095d6abaaab5d1aa6
      https://github.com/llvm/llvm-project/commit/f3bed426308372c70df7565095d6abaaab5d1aa6
  Author: Justin Lebar <justin.lebar at gmail.com>
  Date:   2026-06-01 (Mon, 01 Jun 2026)

  Changed paths:
    M llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
    A llvm/test/CodeGen/AArch64/vector-splice-compress-mmo-align.ll

  Log Message:
  -----------
  [SelectionDAG] Don't over-claim alignment on vector splice/compress stack MMOs (#200622)

expandVectorSplice and expandVECTOR_COMPRESS allocate their scratch slot
on the stack with getReducedAlign, but the memory accesses they generate
touching this slot use the type's natural alignment, which may be
larger!



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