[all-commits] [llvm/llvm-project] de2bf1: [clang][DirectX] Specify element-aligned vectors i...

[Justin Bogner via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: de2bf130e37c1fe47e8da5b737aa568e6f141938
      https://github.com/llvm/llvm-project/commit/de2bf130e37c1fe47e8da5b737aa568e6f141938
  Author: Justin Bogner <mail at justinbogner.com>
  Date:   2026-03-13 (Fri, 13 Mar 2026)

  Changed paths:
    M clang/include/clang/Basic/TargetInfo.h
    M clang/lib/AST/ASTContext.cpp
    M clang/lib/Basic/TargetInfo.cpp
    M clang/lib/Basic/Targets/DirectX.h
    M clang/lib/CodeGen/CodeGenModule.cpp
    M clang/test/CodeGenDirectX/Builtins/dot2add.c
    M clang/test/CodeGenHLSL/ArrayAssignable.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/AggregateSplatCast.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/ArrayElementwiseCast.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/InitLists.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/MatrixConstructor.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/MatrixElementTypeCast.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptConstSwizzle.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptDynamicSwizzle.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/MatrixSingleSubscriptSetter.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/MatrixSplat.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/MatrixToAndFromVectorConstructors.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/OutputArguments.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/StructElementwiseCast.hlsl
    M clang/test/CodeGenHLSL/BasicFeatures/VectorElementwiseCast.hlsl
    M clang/test/CodeGenHLSL/BoolVector.hlsl
    M clang/test/CodeGenHLSL/basic_types.hlsl
    M clang/test/CodeGenHLSL/builtins/AddUint64.hlsl
    M clang/test/CodeGenHLSL/builtins/ScalarSwizzles.hlsl
    M clang/test/CodeGenHLSL/builtins/VectorSwizzles.hlsl
    M clang/test/CodeGenHLSL/builtins/clip.hlsl
    M clang/test/CodeGenHLSL/builtins/mad.hlsl
    M clang/test/CodeGenHLSL/builtins/select.hlsl
    M clang/test/CodeGenHLSL/float3.hlsl
    M clang/test/CodeGenHLSL/groupsharedArgs/ArrTest.hlsl
    M clang/test/CodeGenHLSL/groupsharedArgs/Overloads.hlsl
    M clang/test/CodeGenHLSL/groupsharedArgs/TemplateTest.hlsl
    M clang/test/CodeGenHLSL/groupsharedArgs/VectorTest.hlsl
    M clang/test/CodeGenHLSL/matrix-member-one-based-swizzle-store.hlsl
    M clang/test/CodeGenHLSL/matrix-member-zero-based-swizzle-store.hlsl
    M clang/test/CodeGenHLSL/resources/cbuffer-empty-struct-array.hlsl
    M clang/test/CodeGenHLSL/resources/cbuffer.hlsl
    M clang/test/CodeGenHLSL/resources/cbuffer_geps.hlsl
    M clang/test/CodeGenHLSL/resources/cbuffer_with_packoffset.hlsl
    M clang/test/CodeGenHLSL/resources/default_cbuffer_with_layout.hlsl
    M clang/test/CodeGenHLSL/resources/res-array-global-dyn-index.hlsl

  Log Message:
  -----------
  [clang][DirectX] Specify element-aligned vectors in TargetInfo (#185954)

Add a bit to TargetInfo to specify that vectors are element-aligned
rather than naturally aligned. This is needed to match DirectX's Data
Layout in LLVM.

Note that this removes the `Opts.HLSL` early exit from
`checkDataLayoutConsistency` so that we actually get these checks when
compiling HLSL. This check looks like it was put there because of
similarity between OpenCL and HLSL, but it isn't actually necessary.

Resolves #123968



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