Class UdfCompiler¶
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class
UdfCompiler¶ Driver for calling clang/clang++ to compile C++ programs to LLVM IR for use as a UDF. Default initialization will find Clang using the clang library invocations. An optional clang override and additional arguments to the clang binary can be added. Once initialized the class holds the state for calling clang until destruction.
Public Functions
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UdfCompiler(CudaMgr_Namespace::NvidiaDeviceArch target_arch, const std::string &clang_path_override = "")¶
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UdfCompiler(CudaMgr_Namespace::NvidiaDeviceArch target_arch, const std::string &clang_path_override, const std::vector<std::string> clang_options)¶
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std::pair<std::string, std::string>
compileUdf(const std::string &udf_file_name) const¶ Compile a C++ file to LLVM IR, and generate an AST file. Both artifacts exist as files on disk. Three artifacts will be generated; the AST file, the CPU LLVM IR, and GPU LLVM IR (if CUDA is enabled and compilation succeeds). These LLVM IR files can be loaded by the Executor. The AST will be processed by Calcite.
Public Static Functions
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std::string
getAstFileName(const std::string &udf_file_name)¶
Private Functions
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void
generateAST(const std::string &file_name) const¶ Call clang binary to generate abstract syntax tree file for registration in Calcite.
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std::string
compileToLLVMIR(const std::string &udf_file_name) const¶ Formulate Clang command line command and call clang binary to generate LLVM IR for the C/C++ file.
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int
compileFromCommandLine(const std::vector<std::string> &command_line) const¶ Formulate the full compile command and call the compiler.
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