40c1d50024
Closes #99156. Tasks completed: - Implement `smoothstep` using HLSL source in `hlsl_intrinsics.h` - Implement the `smoothstep` SPIR-V target built-in in `clang/include/clang/Basic/BuiltinsSPIRV.td` - Add sema checks for `smoothstep` to `CheckSPIRVBuiltinFunctionCall` in `clang/lib/Sema/SemaSPIRV.cpp` - Add codegen for spv `smoothstep` to `EmitSPIRVBuiltinExpr` in `clang/lib/CodeGen/TargetBuiltins/SPIR.cpp` - Add codegen tests to `clang/test/CodeGenHLSL/builtins/smoothstep.hlsl` - Add spv codegen test to `clang/test/CodeGenSPIRV/Builtins/smoothstep.c` - Add sema tests to `clang/test/SemaHLSL/BuiltIns/smoothstep-errors.hlsl` - Add spv sema tests to `clang/test/SemaSPIRV/BuiltIns/smoothstep-errors.c` - Create the `int_spv_smoothstep` intrinsic in `IntrinsicsSPIRV.td` - In SPIRVInstructionSelector.cpp create the `smoothstep` lowering and map it to `int_spv_smoothstep` in `SPIRVInstructionSelector::selectIntrinsic` - Create SPIR-V backend test case in `llvm/test/CodeGen/SPIRV/hlsl-intrinsics/smoothstep.ll` - Create SPIR-V backend test case in `llvm/test/CodeGen/SPIRV/opencl/smoothstep.ll`
C language Family Front-end
Welcome to Clang.
This is a compiler front-end for the C family of languages (C, C++ and Objective-C) which is built as part of the LLVM compiler infrastructure project.
Unlike many other compiler frontends, Clang is useful for a number of things beyond just compiling code: we intend for Clang to be host to a number of different source-level tools. One example of this is the Clang Static Analyzer.
If you're interested in more (including how to build Clang) it is best to read the relevant websites. Here are some pointers:
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Information on Clang: http://clang.llvm.org/
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Building and using Clang: http://clang.llvm.org/get_started.html
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Clang Static Analyzer: http://clang-analyzer.llvm.org/
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Information on the LLVM project: http://llvm.org/
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If you have questions or comments about Clang, a great place to discuss them is on the Clang forums:
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If you find a bug in Clang, please file it in the LLVM bug tracker: