2021-08-07 17:41:19 +01:00
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/* -*- C++ -*-
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* Serene programming language.
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*
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* Copyright (c) 2019-2021 Sameer Rahmani <lxsameer@gnu.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef SERENE_JIT_H
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#define SERENE_JIT_H
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2021-08-15 12:06:56 +01:00
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#include "serene/errors.h"
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#include "serene/slir/generatable.h"
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#include "serene/utils.h"
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2021-08-07 21:09:18 +01:00
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#include <llvm/ADT/StringRef.h>
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#include <llvm/ExecutionEngine/JITEventListener.h>
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#include <llvm/ExecutionEngine/ObjectCache.h>
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#include <llvm/ExecutionEngine/Orc/LLJIT.h>
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#include <llvm/Support/CodeGen.h>
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#include <llvm/Support/Debug.h>
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#include <memory>
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#include <mlir/Support/LLVM.h>
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#define JIT_LOG(...) \
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DEBUG_WITH_TYPE("JIT", llvm::dbgs() << "[JIT]: " << __VA_ARGS__ << "\n");
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namespace serene {
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class JIT;
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using MaybeJIT = Result<std::unique_ptr<JIT>, serene::errors::Error>;
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/// A simple object cache following Lang's LLJITWithObjectCache example and
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/// MLIR's SimpelObjectCache.
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class ObjectCache : public llvm::ObjectCache {
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public:
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/// Cache the given `objBuffer` for the given module `m`. The buffer contains
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/// the combiled objects of the module
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void notifyObjectCompiled(const llvm::Module *m,
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llvm::MemoryBufferRef objBuffer) override;
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// Lookup the cache for the given module `m` or returen a nullptr.
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std::unique_ptr<llvm::MemoryBuffer> getObject(const llvm::Module *m) override;
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/// Dump cached object to output file `filename`.
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void dumpToObjectFile(llvm::StringRef filename);
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private:
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llvm::StringMap<std::unique_ptr<llvm::MemoryBuffer>> cachedObjects;
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};
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class JIT {
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// TODO: Should the JIT own the context ???
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Namespace &ns;
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std::unique_ptr<llvm::orc::LLJIT> engine;
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std::unique_ptr<ObjectCache> cache;
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/// GDB notification listener.
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llvm::JITEventListener *gdbListener;
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/// Perf notification listener.
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llvm::JITEventListener *perfListener;
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public:
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JIT(Namespace &ns, bool enableObjectCache = true,
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bool enableGDBNotificationListener = true,
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bool enablePerfNotificationListener = true);
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static MaybeJIT
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make(Namespace &ns, mlir::ArrayRef<llvm::StringRef> sharedLibPaths = {},
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mlir::Optional<llvm::CodeGenOpt::Level> jitCodeGenOptLevel = llvm::None,
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bool enableObjectCache = true, bool enableGDBNotificationListener = true,
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bool enablePerfNotificationListener = true);
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};
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} // namespace serene
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#endif
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