307 lines
11 KiB
C++
307 lines
11 KiB
C++
/* -*- C++ -*-
|
|
* Serene Programming Language
|
|
*
|
|
* Copyright (c) 2019-2023 Sameer Rahmani <lxsameer@gnu.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, version 2.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "jit/jit.h"
|
|
|
|
#include "options.h" // for Options
|
|
|
|
#include <__type_traits/remove_reference.h> // for remov...
|
|
#include <__utility/move.h> // for move
|
|
#include <system_error> // for error_code
|
|
|
|
#include <llvm/ADT/StringMapEntry.h> // for StringMapEntry
|
|
#include <llvm/ADT/iterator.h> // for iterator_facade_base
|
|
#include <llvm/ExecutionEngine/JITEventListener.h> // for JITEventListener
|
|
#include <llvm/ExecutionEngine/Orc/CompileUtils.h> // for TMOwn...
|
|
#include <llvm/ExecutionEngine/Orc/Core.h> // for JITDy...
|
|
#include <llvm/ExecutionEngine/Orc/DebugUtils.h> // for opera...
|
|
#include <llvm/ExecutionEngine/Orc/ExecutionUtils.h> // for Dynam...
|
|
#include <llvm/ExecutionEngine/Orc/IRCompileLayer.h> // for IRCom...
|
|
#include <llvm/ExecutionEngine/Orc/LLJIT.h> // IWYU pragma: keep
|
|
#include <llvm/ExecutionEngine/Orc/Layer.h> // for Objec...
|
|
#include <llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h>
|
|
#include <llvm/ExecutionEngine/Orc/ThreadSafeModule.h> // for Threa...
|
|
#include <llvm/ExecutionEngine/SectionMemoryManager.h>
|
|
#include <llvm/IR/DataLayout.h> // for DataL...
|
|
#include <llvm/IR/LLVMContext.h> // for LLVMC...
|
|
#include <llvm/IR/Module.h> // for Module
|
|
#include <llvm/Support/FileSystem.h> // for OpenFlags
|
|
#include <llvm/Support/ToolOutputFile.h> // for ToolOutputFile
|
|
#include <llvm/TargetParser/Triple.h> // for Triple
|
|
|
|
#include <assert.h> // for assert
|
|
#include <string> // for operator+, char_t...
|
|
|
|
namespace serene::jit {
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// ObjectCache Implementation
|
|
// ----------------------------------------------------------------------------
|
|
void ObjectCache::notifyObjectCompiled(const llvm::Module *m,
|
|
llvm::MemoryBufferRef objBuffer) {
|
|
cachedObjects[m->getModuleIdentifier()] =
|
|
llvm::MemoryBuffer::getMemBufferCopy(objBuffer.getBuffer(),
|
|
objBuffer.getBufferIdentifier());
|
|
}
|
|
|
|
std::unique_ptr<llvm::MemoryBuffer>
|
|
ObjectCache::getObject(const llvm::Module *m) {
|
|
auto i = cachedObjects.find(m->getModuleIdentifier());
|
|
|
|
if (i == cachedObjects.end()) {
|
|
JIT_LOG("No object for " + m->getModuleIdentifier() +
|
|
" in cache. Compiling.");
|
|
return nullptr;
|
|
}
|
|
|
|
JIT_LOG("Object for " + m->getModuleIdentifier() + " loaded from cache.");
|
|
return llvm::MemoryBuffer::getMemBuffer(i->second->getMemBufferRef());
|
|
}
|
|
|
|
void ObjectCache::dumpToObjectFile(llvm::StringRef outputFilename) {
|
|
// Set up the output file.
|
|
std::error_code error;
|
|
|
|
auto file = std::make_unique<llvm::ToolOutputFile>(outputFilename, error,
|
|
llvm::sys::fs::OF_None);
|
|
if (error) {
|
|
|
|
llvm::errs() << "cannot open output file '" + outputFilename.str() +
|
|
"': " + error.message()
|
|
<< "\n";
|
|
return;
|
|
}
|
|
// Dump the object generated for a single module to the output file.
|
|
// TODO: Replace this with a runtime check
|
|
assert(cachedObjects.size() == 1 && "Expected only one object entry.");
|
|
|
|
auto &cachedObject = cachedObjects.begin()->second;
|
|
file->os() << cachedObject->getBuffer();
|
|
file->keep();
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// JIT Implementation
|
|
// ----------------------------------------------------------------------------
|
|
orc::JITDylib *JIT::getLatestJITDylib(const llvm::StringRef &nsName) {
|
|
if (jitDylibs.count(nsName) == 0) {
|
|
return nullptr;
|
|
}
|
|
|
|
auto vec = jitDylibs[nsName];
|
|
// TODO: Make sure that the returning Dylib still exists in the JIT
|
|
// by calling jit->engine->getJITDylibByName(dylib_name);
|
|
return vec.empty() ? nullptr : vec.back();
|
|
};
|
|
|
|
void JIT::pushJITDylib(const llvm::StringRef &nsName, llvm::orc::JITDylib *l) {
|
|
if (jitDylibs.count(nsName) == 0) {
|
|
llvm::SmallVector<llvm::orc::JITDylib *, 1> vec{l};
|
|
jitDylibs[nsName] = vec;
|
|
return;
|
|
}
|
|
auto vec = jitDylibs[nsName];
|
|
vec.push_back(l);
|
|
jitDylibs[nsName] = vec;
|
|
}
|
|
|
|
size_t JIT::getNumberOfJITDylibs(const llvm::StringRef &nsName) {
|
|
if (jitDylibs.count(nsName) == 0) {
|
|
return 0;
|
|
}
|
|
|
|
return jitDylibs[nsName].size();
|
|
};
|
|
|
|
JIT::JIT(llvm::orc::JITTargetMachineBuilder &&jtmb,
|
|
std::unique_ptr<Options> opts)
|
|
:
|
|
|
|
options(std::move(opts)),
|
|
cache(options->JITenableObjectCache ? new ObjectCache() : nullptr),
|
|
gdbListener(options->JITenableGDBNotificationListener
|
|
? llvm::JITEventListener::createGDBRegistrationListener()
|
|
: nullptr),
|
|
perfListener(options->JITenablePerfNotificationListener
|
|
? llvm::JITEventListener::createPerfJITEventListener()
|
|
: nullptr),
|
|
jtmb(jtmb){};
|
|
|
|
void JIT::dumpToObjectFile(const llvm::StringRef &filename) {
|
|
cache->dumpToObjectFile(filename);
|
|
};
|
|
|
|
int JIT::getOptimizatioLevel() const {
|
|
if (options->compilationPhase <= CompilationPhase::NoOptimization) {
|
|
return 0;
|
|
}
|
|
|
|
if (options->compilationPhase == CompilationPhase::O1) {
|
|
return 1;
|
|
}
|
|
if (options->compilationPhase == CompilationPhase::O2) {
|
|
return 2;
|
|
}
|
|
return 3;
|
|
}
|
|
|
|
llvm::Error JIT::createCurrentProcessJD() {
|
|
|
|
auto &es = WITH_ENGINE(auto &, getExecutionSession());
|
|
auto *processJDPtr = es.getJITDylibByName(MAIN_PROCESS_JD_NAME);
|
|
|
|
if (processJDPtr != nullptr) {
|
|
// We already created the JITDylib for the current process
|
|
return llvm::Error::success();
|
|
}
|
|
|
|
auto processJD = es.createJITDylib(MAIN_PROCESS_JD_NAME);
|
|
|
|
if (!processJD) {
|
|
return processJD.takeError();
|
|
}
|
|
|
|
auto generator =
|
|
llvm::orc::DynamicLibrarySearchGenerator::GetForCurrentProcess(
|
|
WITH_ENGINE(const auto &, getDataLayout()).getGlobalPrefix());
|
|
|
|
if (!generator) {
|
|
return generator.takeError();
|
|
}
|
|
|
|
processJD->addGenerator(std::move(*generator));
|
|
return llvm::Error::success();
|
|
};
|
|
|
|
MaybeJIT JIT::make(llvm::orc::JITTargetMachineBuilder &&jtmb,
|
|
std::unique_ptr<Options> opts) {
|
|
auto dl = jtmb.getDefaultDataLayoutForTarget();
|
|
if (!dl) {
|
|
return dl.takeError();
|
|
}
|
|
|
|
auto jitEngine = std::make_unique<JIT>(std::move(jtmb), std::move(opts));
|
|
//
|
|
// What might go wrong?
|
|
// in a repl env when we have to create new modules on top of each other
|
|
// having two different contex might be a problem, but i think since we
|
|
// use the first context to generate the IR and the second one to just
|
|
// run it.
|
|
std::unique_ptr<llvm::LLVMContext> ctx(new llvm::LLVMContext);
|
|
|
|
// Callback to create the object layer with symbol resolution to current
|
|
// process and dynamically linked libraries.
|
|
auto objectLinkingLayerCreator = [&](llvm::orc::ExecutionSession &session,
|
|
const llvm::Triple &tt) {
|
|
(void)tt;
|
|
|
|
auto objectLayer =
|
|
std::make_unique<llvm::orc::RTDyldObjectLinkingLayer>(session, []() {
|
|
return std::make_unique<llvm::SectionMemoryManager>();
|
|
});
|
|
|
|
// Register JIT event listeners if they are enabled.
|
|
if (jitEngine->gdbListener != nullptr) {
|
|
objectLayer->registerJITEventListener(*jitEngine->gdbListener);
|
|
}
|
|
if (jitEngine->perfListener != nullptr) {
|
|
objectLayer->registerJITEventListener(*jitEngine->perfListener);
|
|
}
|
|
|
|
// COFF format binaries (Windows) need special handling to deal with
|
|
// exported symbol visibility.
|
|
// cf llvm/lib/ExecutionEngine/Orc/LLJIT.cpp
|
|
// LLJIT::createObjectLinkingLayer
|
|
if (jitEngine->options->hostTriple.isOSBinFormatCOFF()) {
|
|
objectLayer->setOverrideObjectFlagsWithResponsibilityFlags(true);
|
|
objectLayer->setAutoClaimResponsibilityForObjectSymbols(true);
|
|
}
|
|
|
|
return objectLayer;
|
|
};
|
|
|
|
// Callback to inspect the cache and recompile on demand.
|
|
auto compileFunctionCreator = [&](llvm::orc::JITTargetMachineBuilder JTMB)
|
|
-> llvm::Expected<
|
|
std::unique_ptr<llvm::orc::IRCompileLayer::IRCompiler>> {
|
|
llvm::CodeGenOpt::Level jitCodeGenOptLevel =
|
|
static_cast<llvm::CodeGenOpt::Level>(jitEngine->getOptimizatioLevel());
|
|
|
|
JTMB.setCodeGenOptLevel(jitCodeGenOptLevel);
|
|
|
|
auto targetMachine = JTMB.createTargetMachine();
|
|
if (!targetMachine) {
|
|
return targetMachine.takeError();
|
|
}
|
|
|
|
return std::make_unique<llvm::orc::TMOwningSimpleCompiler>(
|
|
std::move(*targetMachine), jitEngine->cache.get());
|
|
};
|
|
|
|
auto compileNotifier = [&](llvm::orc::MaterializationResponsibility &r,
|
|
llvm::orc::ThreadSafeModule tsm) {
|
|
auto syms = r.getRequestedSymbols();
|
|
tsm.withModuleDo([&](llvm::Module &m) {
|
|
JIT_LOG("Compiled " << syms
|
|
<< " for the module: " << m.getModuleIdentifier());
|
|
});
|
|
};
|
|
|
|
if (jitEngine->options->JITLazy) {
|
|
// Setup a LLLazyJIT instance to the times that latency is important
|
|
// for example in a REPL. This way
|
|
auto jit =
|
|
cantFail(llvm::orc::LLLazyJITBuilder()
|
|
.setCompileFunctionCreator(compileFunctionCreator)
|
|
.setObjectLinkingLayerCreator(objectLinkingLayerCreator)
|
|
.create());
|
|
jit->getIRCompileLayer().setNotifyCompiled(compileNotifier);
|
|
jitEngine->engine = std::move(jit);
|
|
|
|
} else {
|
|
// Setup a LLJIT instance for the times that performance is important
|
|
// and we want to compile everything as soon as possible. For instance
|
|
// when we run the JIT in the compiler
|
|
auto jit =
|
|
cantFail(llvm::orc::LLJITBuilder()
|
|
.setCompileFunctionCreator(compileFunctionCreator)
|
|
.setObjectLinkingLayerCreator(objectLinkingLayerCreator)
|
|
.create());
|
|
jit->getIRCompileLayer().setNotifyCompiled(compileNotifier);
|
|
jitEngine->engine = std::move(jit);
|
|
}
|
|
|
|
if (auto err = jitEngine->createCurrentProcessJD()) {
|
|
return err;
|
|
}
|
|
|
|
return MaybeJIT(std::move(jitEngine));
|
|
};
|
|
|
|
MaybeJIT makeJIT(std::unique_ptr<Options> opts) {
|
|
llvm::orc::JITTargetMachineBuilder jtmb(opts->hostTriple);
|
|
auto maybeJIT = JIT::make(std::move(jtmb), std::move(opts));
|
|
|
|
if (!maybeJIT) {
|
|
return maybeJIT.takeError();
|
|
}
|
|
|
|
return maybeJIT;
|
|
};
|
|
} // namespace serene::jit
|