Jit.hpp

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#ifndef LLVMEXPR_RUNTIME_LLVM_JIT_HPP
#define LLVMEXPR_RUNTIME_LLVM_JIT_HPP
 
#include <cstdint>
#include <memory>
#include <mutex>
#include <string>
#include <unordered_map>
 
#include "llvm/ExecutionEngine/Orc/LLJIT.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/TargetParser/Triple.h"
 
using ProcessProc = void (*)(void* context, uint8_t** rwptrs,
                             const int* strides, float* props);
 
struct CompiledFunction {
    ProcessProc func_ptr = nullptr;
};
 
class OrcJit {
  private:
    std::unique_ptr<llvm::orc::LLJIT> lljit;
 
  public:
    explicit OrcJit(bool no_nans_fp_math);
 
    [[nodiscard]] const llvm::DataLayout& getDataLayout() const;
 
    [[nodiscard]] const llvm::Triple& getTargetTriple() const;
 
    void addModule(std::unique_ptr<llvm::Module> m,
                   std::unique_ptr<llvm::LLVMContext> ctx);
 
    void* getFunctionAddress(const std::string& name);
};
 
// NOLINTBEGIN(cppcoreguidelines-avoid-non-const-global-variables)
// Global JIT instances
extern OrcJit global_jit_fast;
extern OrcJit global_jit_nan_safe;
 
// JIT cache
extern std::unordered_map<std::string, CompiledFunction> jit_cache;
extern std::mutex cache_mutex;
// NOLINTEND(cppcoreguidelines-avoid-non-const-global-variables)
 
#endif // LLVMEXPR_RUNTIME_LLVM_JIT_HPP