Revert "[clang-repl] Land initial infrastructure for incremental parsing"

This reverts commit 44a4000181e1a25027e87f2ae4e71cb876a7a275.

We are seeing build failures due to missing dependency to libSupport and
CMake Error at tools/clang/tools/clang-repl/cmake_install.cmake
file INSTALL cannot find

1 files changed, 0 insertions, 220 deletions

diff --git a/clang/lib/Interpreter/Interpreter.cpp b/clang/lib/Interpreter/Interpreter.cpp
deleted file mode 100644
index 8de38c0..0000000
--- a/clang/lib/Interpreter/Interpreter.cpp
+++ /dev/null
@@ -1,220 +0,0 @@
-//===------ Interpreter.cpp - Incremental Compilation and Execution -------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements the component which performs incremental code
-// compilation and execution.
-//
-//===----------------------------------------------------------------------===//
-
-#include "clang/Interpreter/Interpreter.h"
-
-#include "IncrementalExecutor.h"
-#include "IncrementalParser.h"
-
-#include "clang/Basic/TargetInfo.h"
-#include "clang/CodeGen/ModuleBuilder.h"
-#include "clang/CodeGen/ObjectFilePCHContainerOperations.h"
-#include "clang/Driver/Compilation.h"
-#include "clang/Driver/Driver.h"
-#include "clang/Driver/Job.h"
-#include "clang/Driver/Options.h"
-#include "clang/Driver/Tool.h"
-#include "clang/Frontend/CompilerInstance.h"
-#include "clang/Frontend/TextDiagnosticBuffer.h"
-#include "clang/Lex/PreprocessorOptions.h"
-
-#include "llvm/IR/Module.h"
-#include "llvm/Support/Host.h"
-
-using namespace clang;
-
-// FIXME: Figure out how to unify with namespace init_convenience from
-//        tools/clang-import-test/clang-import-test.cpp and
-//        examples/clang-interpreter/main.cpp
-namespace {
-/// Retrieves the clang CC1 specific flags out of the compilation's jobs.
-/// \returns NULL on error.
-static llvm::Expected<const llvm::opt::ArgStringList *>
-GetCC1Arguments(DiagnosticsEngine *Diagnostics,
-                driver::Compilation *Compilation) {
-  // We expect to get back exactly one Command job, if we didn't something
-  // failed. Extract that job from the Compilation.
-  const driver::JobList &Jobs = Compilation->getJobs();
-  if (!Jobs.size() || !isa<driver::Command>(*Jobs.begin()))
-    return llvm::createStringError(std::errc::state_not_recoverable,
-                                   "Driver initialization failed. "
-                                   "Unable to create a driver job");
-
-  // The one job we find should be to invoke clang again.
-  const driver::Command *Cmd = cast<driver::Command>(&(*Jobs.begin()));
-  if (llvm::StringRef(Cmd->getCreator().getName()) != "clang")
-    return llvm::createStringError(std::errc::state_not_recoverable,
-                                   "Driver initialization failed");
-
-  return &Cmd->getArguments();
-}
-
-static llvm::Expected<std::unique_ptr<CompilerInstance>>
-CreateCI(const llvm::opt::ArgStringList &Argv) {
-  std::unique_ptr<CompilerInstance> Clang(new CompilerInstance());
-  IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
-
-  // Register the support for object-file-wrapped Clang modules.
-  // FIXME: Clang should register these container operations automatically.
-  auto PCHOps = Clang->getPCHContainerOperations();
-  PCHOps->registerWriter(std::make_unique<ObjectFilePCHContainerWriter>());
-  PCHOps->registerReader(std::make_unique<ObjectFilePCHContainerReader>());
-
-  // Buffer diagnostics from argument parsing so that we can output them using
-  // a well formed diagnostic object.
-  IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
-  TextDiagnosticBuffer *DiagsBuffer = new TextDiagnosticBuffer;
-  DiagnosticsEngine Diags(DiagID, &*DiagOpts, DiagsBuffer);
-  bool Success = CompilerInvocation::CreateFromArgs(
-      Clang->getInvocation(), llvm::makeArrayRef(Argv.begin(), Argv.size()),
-      Diags);
-
-  // Infer the builtin include path if unspecified.
-  if (Clang->getHeaderSearchOpts().UseBuiltinIncludes &&
-      Clang->getHeaderSearchOpts().ResourceDir.empty())
-    Clang->getHeaderSearchOpts().ResourceDir =
-        CompilerInvocation::GetResourcesPath(Argv[0], nullptr);
-
-  // Create the actual diagnostics engine.
-  Clang->createDiagnostics();
-  if (!Clang->hasDiagnostics())
-    return llvm::createStringError(std::errc::state_not_recoverable,
-                                   "Initialization failed. "
-                                   "Unable to create diagnostics engine");
-
-  DiagsBuffer->FlushDiagnostics(Clang->getDiagnostics());
-  if (!Success)
-    return llvm::createStringError(std::errc::state_not_recoverable,
-                                   "Initialization failed. "
-                                   "Unable to flush diagnostics");
-
-  // FIXME: Merge with CompilerInstance::ExecuteAction.
-  llvm::MemoryBuffer *MB = llvm::MemoryBuffer::getMemBuffer("").release();
-  Clang->getPreprocessorOpts().addRemappedFile("<<< inputs >>>", MB);
-
-  Clang->setTarget(TargetInfo::CreateTargetInfo(
-      Clang->getDiagnostics(), Clang->getInvocation().TargetOpts));
-  if (!Clang->hasTarget())
-    return llvm::createStringError(std::errc::state_not_recoverable,
-                                   "Initialization failed. "
-                                   "Target is missing");
-
-  Clang->getTarget().adjust(Clang->getLangOpts());
-
-  return std::move(Clang);
-}
-
-} // anonymous namespace
-
-llvm::Expected<std::unique_ptr<CompilerInstance>>
-IncrementalCompilerBuilder::create(std::vector<const char *> &ClangArgv) {
-
-  // If we don't know ClangArgv0 or the address of main() at this point, try
-  // to guess it anyway (it's possible on some platforms).
-  std::string MainExecutableName =
-      llvm::sys::fs::getMainExecutable(nullptr, nullptr);
-
-  ClangArgv.insert(ClangArgv.begin(), MainExecutableName.c_str());
-
-  // Prepending -c to force the driver to do something if no action was
-  // specified. By prepending we allow users to override the default
-  // action and use other actions in incremental mode.
-  // FIXME: Print proper driver diagnostics if the driver flags are wrong.
-  ClangArgv.insert(ClangArgv.begin() + 1, "-c");
-
-  if (!llvm::is_contained(ClangArgv, " -x")) {
-    // We do C++ by default; append right after argv[0] if no "-x" given
-    ClangArgv.push_back("-x");
-    ClangArgv.push_back("c++");
-  }
-
-  // Put a dummy C++ file on to ensure there's at least one compile job for the
-  // driver to construct.
-  ClangArgv.push_back("<<< inputs >>>");
-
-  CompilerInvocation Invocation;
-  // Buffer diagnostics from argument parsing so that we can output them using a
-  // well formed diagnostic object.
-  IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
-  IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
-  TextDiagnosticBuffer *DiagsBuffer = new TextDiagnosticBuffer;
-  DiagnosticsEngine Diags(DiagID, &*DiagOpts, DiagsBuffer);
-  unsigned MissingArgIndex, MissingArgCount;
-  const llvm::opt::OptTable &Opts = driver::getDriverOptTable();
-  llvm::opt::InputArgList ParsedArgs =
-      Opts.ParseArgs(ArrayRef<const char *>(ClangArgv).slice(1),
-                     MissingArgIndex, MissingArgCount);
-  ParseDiagnosticArgs(*DiagOpts, ParsedArgs, &Diags);
-
-  driver::Driver Driver(/*MainBinaryName=*/ClangArgv[0],
-                        llvm::sys::getDefaultTargetTriple(), Diags);
-  Driver.setCheckInputsExist(false); // the input comes from mem buffers
-  llvm::ArrayRef<const char *> RF = llvm::makeArrayRef(ClangArgv);
-  std::unique_ptr<driver::Compilation> Compilation(Driver.BuildCompilation(RF));
-
-  if (Compilation->getArgs().hasArg(driver::options::OPT_v))
-    Compilation->getJobs().Print(llvm::errs(), "\n", /*Quote=*/false);
-
-  auto ErrOrCC1Args = GetCC1Arguments(&Diags, Compilation.get());
-  if (auto Err = ErrOrCC1Args.takeError())
-    return std::move(Err);
-
-  return CreateCI(**ErrOrCC1Args);
-}
-
-Interpreter::Interpreter(std::unique_ptr<CompilerInstance> CI,
-                         llvm::Error &Err) {
-  llvm::ErrorAsOutParameter EAO(&Err);
-  auto LLVMCtx = std::make_unique<llvm::LLVMContext>();
-  TSCtx = std::make_unique<llvm::orc::ThreadSafeContext>(std::move(LLVMCtx));
-  IncrParser = std::make_unique<IncrementalParser>(std::move(CI),
-                                                   *TSCtx->getContext(), Err);
-}
-
-Interpreter::~Interpreter() {}
-
-llvm::Expected<std::unique_ptr<Interpreter>>
-Interpreter::create(std::unique_ptr<CompilerInstance> CI) {
-  llvm::Error Err = llvm::Error::success();
-  auto Interp =
-      std::unique_ptr<Interpreter>(new Interpreter(std::move(CI), Err));
-  if (Err)
-    return std::move(Err);
-  return std::move(Interp);
-}
-
-const CompilerInstance *Interpreter::getCompilerInstance() const {
-  return IncrParser->getCI();
-}
-
-llvm::Expected<Transaction &> Interpreter::Parse(llvm::StringRef Code) {
-  return IncrParser->Parse(Code);
-}
-
-llvm::Error Interpreter::Execute(Transaction &T) {
-  assert(T.TheModule);
-  if (!IncrExecutor) {
-    llvm::Error Err = llvm::Error::success();
-    IncrExecutor = std::make_unique<IncrementalExecutor>(*TSCtx, Err);
-    if (Err)
-      return Err;
-  }
-  // FIXME: Add a callback to retain the llvm::Module once the JIT is done.
-  if (auto Err = IncrExecutor->addModule(std::move(T.TheModule)))
-    return Err;
-
-  if (auto Err = IncrExecutor->runCtors())
-    return Err;
-
-  return llvm::Error::success();
-}