[all-commits] [llvm/llvm-project] 27b3b4: [DirectX] Move the scalarizer pass to before dxil-...

[Deric C. via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 27b3b4a665f144b968a04502e5461ab8d1cd1471
      https://github.com/llvm/llvm-project/commit/27b3b4a665f144b968a04502e5461ab8d1cd1471
  Author: Deric C. <cheung.deric at gmail.com>
  Date:   2025-07-14 (Mon, 14 Jul 2025)

  Changed paths:
    M llvm/lib/Target/DirectX/DXILDataScalarization.cpp
    M llvm/lib/Target/DirectX/DirectXTargetMachine.cpp
    M llvm/test/CodeGen/DirectX/llc-pipeline.ll
    M llvm/test/CodeGen/DirectX/llc-vector-load-scalarize.ll
    M llvm/test/CodeGen/DirectX/scalar-store.ll

  Log Message:
  -----------
  [DirectX] Move the scalarizer pass to before dxil-flatten-arrays (#146800)

Fixes #145924 and #140416
Depends on #146173 being merged first.

This PR moves the scalarizer pass to immediately before the
dxil-flatten-arrays pass to allow the dxil-flatten-arrays pass to turn
scalar GEPs (including i8 GEPs) into flattened array GEPs where
applicable.

A number of LLVM DirectX CodeGen tests have been edited to remove scalar
GEPs and also correct previously uncaught incorrectly-transformed GEPs.

No more validation errors of the form `Access to out-of-bounds memory is
disallowed` or `TGSM pointers must originate from an unambiguous TGSM
global variable` appear anymore after this PR when compiling DML
shaders.



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