[all-commits] [llvm/llvm-project] 264750: [HLSL] Implement the `degrees` intrinsic (#111209)

[Finn Plummer via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 2647505027d8c01fc920b04aced8cec742a4b2ed
      https://github.com/llvm/llvm-project/commit/2647505027d8c01fc920b04aced8cec742a4b2ed
  Author: Finn Plummer <50529406+inbelic at users.noreply.github.com>
  Date:   2024-10-10 (Thu, 10 Oct 2024)

  Changed paths:
    M clang/include/clang/Basic/Builtins.td
    M clang/lib/CodeGen/CGBuiltin.cpp
    M clang/lib/CodeGen/CGHLSLRuntime.h
    M clang/lib/Headers/hlsl/hlsl_intrinsics.h
    M clang/lib/Sema/SemaHLSL.cpp
    A clang/test/CodeGenHLSL/builtins/degrees.hlsl
    A clang/test/SemaHLSL/BuiltIns/degrees-errors.hlsl
    M clang/test/SemaHLSL/BuiltIns/half-float-only-errors.hlsl
    M llvm/include/llvm/IR/IntrinsicsDirectX.td
    M llvm/include/llvm/IR/IntrinsicsSPIRV.td
    M llvm/lib/Target/DirectX/DXILIntrinsicExpansion.cpp
    M llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp
    A llvm/test/CodeGen/DirectX/degrees.ll
    A llvm/test/CodeGen/SPIRV/hlsl-intrinsics/degrees.ll
    A llvm/test/CodeGen/SPIRV/opencl/degrees.ll

  Log Message:
  -----------
  [HLSL] Implement the `degrees` intrinsic (#111209)

- add degrees builtin
    - link degrees api in hlsl_intrinsics.h
    - add degrees intrinsic to IntrinsicsDirectX.td
    - add degrees intrinsic to IntrinsicsSPIRV.td
- add lowering from clang builtin to dx/spv intrinsics in CGBuiltin.cpp
    - add semantic checks to SemaHLSL.cpp
- add expansion of directx intrinsic to llvm fmul for DirectX in
DXILIntrinsicExpansion.cpp
    - add mapping to spir-v intrinsic in SPIRVInstructionSelector.cpp

    - add test coverage:
- degrees.hlsl -> check hlsl lowering to dx/spv degrees intrinsics
- degrees-errors.hlsl/half-float-only-errors -> check semantic warnings
- hlsl-intrinsics/degrees.ll -> check lowering of spir-v degrees
intrinsic to SPIR-V backend
- DirectX/degrees.ll -> check expansion and scalarization of directx
degrees intrinsic to fmul
      
Resolves #99104



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