[all-commits] [llvm/llvm-project] 324bdd: [DirectX] Data Scalarization of Vectors in Global ...

[Farzon Lotfi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 324bdd662dedfd03b884e082f577a8ad6dc1f8a6
      https://github.com/llvm/llvm-project/commit/324bdd662dedfd03b884e082f577a8ad6dc1f8a6
  Author: Farzon Lotfi <1802579+farzonl at users.noreply.github.com>
  Date:   2024-09-26 (Thu, 26 Sep 2024)

  Changed paths:
    M llvm/lib/Target/DirectX/CMakeLists.txt
    A llvm/lib/Target/DirectX/DXILDataScalarization.cpp
    A llvm/lib/Target/DirectX/DXILDataScalarization.h
    M llvm/lib/Target/DirectX/DirectX.h
    M llvm/lib/Target/DirectX/DirectXTargetMachine.cpp
    M llvm/test/CodeGen/DirectX/llc-pipeline.ll
    A llvm/test/CodeGen/DirectX/scalar-data.ll
    A llvm/test/CodeGen/DirectX/scalar-load.ll
    M llvm/test/CodeGen/DirectX/scalar-store.ll

  Log Message:
  -----------
  [DirectX] Data Scalarization of Vectors in Global Scope (#110029)

This change adds a pass to scalarize vectors in global scope into
arrays.

There are three distinct parts
1. find the globals that need to be updated and define what the new type
should be
2. initialize that new type and copy over all the right attributes over
from the old type.
3. Use the instruction visitor pattern to update the loads, stores, and
geps for the layout of the new data structure.

resolves https://github.com/llvm/llvm-project/issues/107920



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