310ee08d5d
Original commit message: "
[clang-repl] Enable debugging of JIT-ed code.
This change follows llvm/llvm-project@21b5ebd and makes use of the jitlink
infrastructure. In order to use this feature inside lldb one needs to run the
lldb command: settings set plugin.jit-loader.gdb.enable on
This works currently only on Darwin since jitlink is not a default ELF/x86-64
backend yet.
Differential revision: https://reviews.llvm.org/D148481
"
This patch reverts commit e64fbf2cca8c4763a058ba59a48ab8e4b8193028 and adds
the missing library dependencies which caused the initial failure.
104 lines
3.5 KiB
C++
104 lines
3.5 KiB
C++
//===--- IncrementalExecutor.cpp - Incremental Execution --------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements the class which performs incremental code execution.
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//
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//===----------------------------------------------------------------------===//
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#include "IncrementalExecutor.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/Basic/TargetOptions.h"
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#include "clang/Interpreter/PartialTranslationUnit.h"
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#include "llvm/ExecutionEngine/ExecutionEngine.h"
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#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
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#include "llvm/ExecutionEngine/Orc/ExecutionUtils.h"
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#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
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#include "llvm/ExecutionEngine/Orc/LLJIT.h"
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#include "llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h"
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#include "llvm/ExecutionEngine/Orc/TargetProcess/JITLoaderGDB.h"
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#include "llvm/ExecutionEngine/SectionMemoryManager.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/TargetSelect.h"
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// Force linking some of the runtimes that helps attaching to a debugger.
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LLVM_ATTRIBUTE_USED void linkComponents() {
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llvm::errs() << (void *)&llvm_orc_registerJITLoaderGDBWrapper
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<< (void *)&llvm_orc_registerJITLoaderGDBAllocAction;
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}
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namespace clang {
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IncrementalExecutor::IncrementalExecutor(llvm::orc::ThreadSafeContext &TSC,
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llvm::Error &Err,
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const clang::TargetInfo &TI)
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: TSCtx(TSC) {
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using namespace llvm::orc;
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llvm::ErrorAsOutParameter EAO(&Err);
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auto JTMB = JITTargetMachineBuilder(TI.getTriple());
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JTMB.addFeatures(TI.getTargetOpts().Features);
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LLJITBuilder Builder;
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Builder.setJITTargetMachineBuilder(JTMB);
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// Enable debugging of JIT'd code (only works on JITLink for ELF and MachO).
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Builder.setEnableDebuggerSupport(true);
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if (auto JitOrErr = Builder.create())
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Jit = std::move(*JitOrErr);
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else {
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Err = JitOrErr.takeError();
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return;
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}
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}
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IncrementalExecutor::~IncrementalExecutor() {}
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llvm::Error IncrementalExecutor::addModule(PartialTranslationUnit &PTU) {
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llvm::orc::ResourceTrackerSP RT =
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Jit->getMainJITDylib().createResourceTracker();
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ResourceTrackers[&PTU] = RT;
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return Jit->addIRModule(RT, {std::move(PTU.TheModule), TSCtx});
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}
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llvm::Error IncrementalExecutor::removeModule(PartialTranslationUnit &PTU) {
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llvm::orc::ResourceTrackerSP RT = std::move(ResourceTrackers[&PTU]);
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if (!RT)
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return llvm::Error::success();
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ResourceTrackers.erase(&PTU);
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if (llvm::Error Err = RT->remove())
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return Err;
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return llvm::Error::success();
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}
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// Clean up the JIT instance.
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llvm::Error IncrementalExecutor::cleanUp() {
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// This calls the global dtors of registered modules.
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return Jit->deinitialize(Jit->getMainJITDylib());
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}
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llvm::Error IncrementalExecutor::runCtors() const {
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return Jit->initialize(Jit->getMainJITDylib());
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}
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llvm::Expected<llvm::orc::ExecutorAddr>
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IncrementalExecutor::getSymbolAddress(llvm::StringRef Name,
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SymbolNameKind NameKind) const {
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auto Sym = (NameKind == LinkerName) ? Jit->lookupLinkerMangled(Name)
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: Jit->lookup(Name);
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if (!Sym)
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return Sym.takeError();
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return Sym;
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}
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} // end namespace clang
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