[all-commits] [llvm/llvm-project] 8dc7b3: Add WaveReadLaneFirst HLSL function (#220373)

[Joshua Batista via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8dc7b3d92cc6371d942dc7619a81faa1f56de938
      https://github.com/llvm/llvm-project/commit/8dc7b3d92cc6371d942dc7619a81faa1f56de938
  Author: Joshua Batista <jbatista at microsoft.com>
  Date:   2026-09-25 (Fri, 25 Sep 2026)

  Changed paths:
    M clang/include/clang/Basic/Builtins.td
    M clang/include/clang/Basic/DiagnosticSemaKinds.td
    M clang/include/clang/Basic/HLSLIntrinsics.td
    M clang/lib/CodeGen/CGHLSLBuiltins.cpp
    M clang/lib/CodeGen/CGHLSLRuntime.h
    M clang/lib/Sema/SemaHLSL.cpp
    A clang/test/CodeGenHLSL/builtins/WaveReadLaneFirst.hlsl
    A clang/test/SemaHLSL/BuiltIns/WaveReadLaneFirst-errors.hlsl
    M clang/test/SemaHLSL/WaveBuiltinAvailability.hlsl
    M llvm/include/llvm/IR/IntrinsicsDirectX.td
    M llvm/include/llvm/IR/IntrinsicsSPIRV.td
    M llvm/lib/Target/DirectX/DXIL.td
    M llvm/lib/Target/DirectX/DXILShaderFlags.cpp
    M llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp
    A llvm/test/CodeGen/DirectX/LongVector/wave-readlane-first.ll
    M llvm/test/CodeGen/DirectX/ShaderFlags/wave-ops.ll
    A llvm/test/CodeGen/DirectX/WaveReadLaneFirst.ll
    A llvm/test/CodeGen/DirectX/WaveReadLaneFirst_mat.ll
    A llvm/test/CodeGen/SPIRV/extensions/SPV_EXT_long_vector/wave-readlane-first.ll
    A llvm/test/CodeGen/SPIRV/hlsl-intrinsics/WaveReadLaneFirst.ll
    A llvm/test/CodeGen/SPIRV/hlsl-intrinsics/WaveReadLaneFirst_mat.ll

  Log Message:
  -----------
  Add WaveReadLaneFirst HLSL function (#220373)

This PR adds the `WaveReadLaneFirst` HLSL function.

Fixes https://github.com/llvm/llvm-project/issues/99164
Assisted by: Github Copilot



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