serene/include/serene/jit.h

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/* -*- C++ -*-
* Serene programming language.
*
* Copyright (c) 2019-2021 Sameer Rahmani <lxsameer@gnu.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef SERENE_JIT_H
#define SERENE_JIT_H
#include "serene/errors.h"
#include "serene/slir/generatable.h"
#include "serene/utils.h"
#include <llvm/ADT/StringRef.h>
#include <llvm/ExecutionEngine/JITEventListener.h>
#include <llvm/ExecutionEngine/ObjectCache.h>
#include <llvm/ExecutionEngine/Orc/LLJIT.h>
#include <llvm/Support/CodeGen.h>
#include <llvm/Support/Debug.h>
#include <memory>
#include <mlir/Support/LLVM.h>
#define JIT_LOG(...) \
DEBUG_WITH_TYPE("JIT", llvm::dbgs() << "[JIT]: " << __VA_ARGS__ << "\n");
namespace serene {
class JIT;
using MaybeJIT = Result<std::unique_ptr<JIT>, serene::errors::Error>;
/// A simple object cache following Lang's LLJITWithObjectCache example and
/// MLIR's SimpelObjectCache.
class ObjectCache : public llvm::ObjectCache {
public:
/// Cache the given `objBuffer` for the given module `m`. The buffer contains
/// the combiled objects of the module
void notifyObjectCompiled(const llvm::Module *m,
llvm::MemoryBufferRef objBuffer) override;
// Lookup the cache for the given module `m` or returen a nullptr.
std::unique_ptr<llvm::MemoryBuffer> getObject(const llvm::Module *m) override;
/// Dump cached object to output file `filename`.
void dumpToObjectFile(llvm::StringRef filename);
private:
llvm::StringMap<std::unique_ptr<llvm::MemoryBuffer>> cachedObjects;
};
class JIT {
// TODO: Should the JIT own the context ???
Namespace &ns;
std::unique_ptr<llvm::orc::LLJIT> engine;
std::unique_ptr<ObjectCache> cache;
/// GDB notification listener.
llvm::JITEventListener *gdbListener;
/// Perf notification listener.
llvm::JITEventListener *perfListener;
public:
JIT(Namespace &ns, bool enableObjectCache = true,
bool enableGDBNotificationListener = true,
bool enablePerfNotificationListener = true);
static MaybeJIT
make(Namespace &ns, mlir::ArrayRef<llvm::StringRef> sharedLibPaths = {},
mlir::Optional<llvm::CodeGenOpt::Level> jitCodeGenOptLevel = llvm::None,
bool enableObjectCache = true, bool enableGDBNotificationListener = true,
bool enablePerfNotificationListener = true);
};
} // namespace serene
#endif