[all-commits] [llvm/llvm-project] fc6aac: [DirectX] Fix bug where Flatten arrays was only us...

[Farzon Lotfi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fc6aac72cc2c9a7a9dab443bca52f813a18461ef
      https://github.com/llvm/llvm-project/commit/fc6aac72cc2c9a7a9dab443bca52f813a18461ef
  Author: Farzon Lotfi <farzonlotfi at microsoft.com>
  Date:   2025-06-16 (Mon, 16 Jun 2025)

  Changed paths:
    M llvm/lib/Target/DirectX/DXILFlattenArrays.cpp
    M llvm/test/CodeGen/DirectX/flatten-array.ll
    M llvm/test/CodeGen/DirectX/llc-vector-load-scalarize.ll

  Log Message:
  -----------
  [DirectX] Fix bug where Flatten arrays was only using last index (#144146)

fixes #142836

We added a function called `collectIndicesAndDimsFromGEP` which builds
the Indicies and Dims up for the recursive case and the base case.
really to solve #142836 we didn't need to add it to the recursive case.
The recursive cases exists for gep chains which are ussually two
indicies per gep ie ptr index and array index. adding
collectIndicesAndDimsFromGEP to the recursive cases means we can now do
some mixed mode indexing say we get a case where its not the ussual 2
indicies but instead 3 we can now treat those last two indicies as part
of the computation for the flat array index.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications