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[clang-repl] Remove redundant link libraries and drop unused file. 

Many thanks to @thakis for pointing this out.

That commit should have been a part of https://reviews.llvm.org/D107049
This commit is contained in:
Vassil Vassilev 2021-10-27 10:11:29 +00:00
parent 05a4b0d605
commit f0d527b28d
2 changed files with 0 additions and 238 deletions
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235
clang/examples/clang-interpreter/main.cpp
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@ -1,235 +0,0 @@
//===-- examples/clang-interpreter/main.cpp - Clang C Interpreter Example -===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "clang/Basic/DiagnosticOptions.h"
#include "clang/CodeGen/CodeGenAction.h"
#include "clang/Driver/Compilation.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/Tool.h"
#include "clang/Frontend/CompilerInstance.h"
#include "clang/Frontend/CompilerInvocation.h"
#include "clang/Frontend/FrontendDiagnostic.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
#include "llvm/ExecutionEngine/Orc/ExecutionUtils.h"
#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
#include "llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h"
#include "llvm/ExecutionEngine/SectionMemoryManager.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Mangler.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Host.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
using namespace clang;
using namespace clang::driver;
// This function isn't referenced outside its translation unit, but it
// can't use the "static" keyword because its address is used for
// GetMainExecutable (since some platforms don't support taking the
// address of main, and some platforms can't implement GetMainExecutable
// without being given the address of a function in the main executable).
std::string GetExecutablePath(const char *Argv0, void *MainAddr) {
return llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
}
namespace llvm {
namespace orc {
class SimpleJIT {
private:
ExecutionSession ES;
std::unique_ptr<TargetMachine> TM;
const DataLayout DL;
MangleAndInterner Mangle{ES, DL};
JITDylib &MainJD{ES.createBareJITDylib("<main>")};
RTDyldObjectLinkingLayer ObjectLayer{ES, createMemMgr};
IRCompileLayer CompileLayer{ES, ObjectLayer,
std::make_unique<SimpleCompiler>(*TM)};
static std::unique_ptr<SectionMemoryManager> createMemMgr() {
return std::make_unique<SectionMemoryManager>();
}
SimpleJIT(
std::unique_ptr<TargetMachine> TM, DataLayout DL,
std::unique_ptr<DynamicLibrarySearchGenerator> ProcessSymbolsGenerator)
: ES(cantFail(SelfExecutorProcessControl::Create())), TM(std::move(TM)),
DL(std::move(DL)) {
llvm::sys::DynamicLibrary::LoadLibraryPermanently(nullptr);
MainJD.addGenerator(std::move(ProcessSymbolsGenerator));
}
public:
~SimpleJIT() {
if (auto Err = ES.endSession())
ES.reportError(std::move(Err));
}
static Expected<std::unique_ptr<SimpleJIT>> Create() {
auto JTMB = JITTargetMachineBuilder::detectHost();
if (!JTMB)
return JTMB.takeError();
auto TM = JTMB->createTargetMachine();
if (!TM)
return TM.takeError();
auto DL = (*TM)->createDataLayout();
auto ProcessSymbolsGenerator =
DynamicLibrarySearchGenerator::GetForCurrentProcess(
DL.getGlobalPrefix());
if (!ProcessSymbolsGenerator)
return ProcessSymbolsGenerator.takeError();
return std::unique_ptr<SimpleJIT>(new SimpleJIT(
std::move(*TM), std::move(DL), std::move(*ProcessSymbolsGenerator)));
}
const TargetMachine &getTargetMachine() const { return *TM; }
Error addModule(ThreadSafeModule M) {
return CompileLayer.add(MainJD, std::move(M));
}
Expected<JITEvaluatedSymbol> findSymbol(const StringRef &Name) {
return ES.lookup({&MainJD}, Mangle(Name));
}
Expected<JITTargetAddress> getSymbolAddress(const StringRef &Name) {
auto Sym = findSymbol(Name);
if (!Sym)
return Sym.takeError();
return Sym->getAddress();
}
};
} // end namespace orc
} // end namespace llvm
llvm::ExitOnError ExitOnErr;
int main(int argc, const char **argv) {
// This just needs to be some symbol in the binary; C++ doesn't
// allow taking the address of ::main however.
void *MainAddr = (void*) (intptr_t) GetExecutablePath;
std::string Path = GetExecutablePath(argv[0], MainAddr);
IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
TextDiagnosticPrinter *DiagClient =
new TextDiagnosticPrinter(llvm::errs(), &*DiagOpts);
IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
DiagnosticsEngine Diags(DiagID, &*DiagOpts, DiagClient);
const std::string TripleStr = llvm::sys::getProcessTriple();
llvm::Triple T(TripleStr);
// Use ELF on Windows-32 and MingW for now.
#ifndef CLANG_INTERPRETER_COFF_FORMAT
if (T.isOSBinFormatCOFF())
T.setObjectFormat(llvm::Triple::ELF);
#endif
ExitOnErr.setBanner("clang interpreter");
Driver TheDriver(Path, T.str(), Diags);
TheDriver.setTitle("clang interpreter");
TheDriver.setCheckInputsExist(false);
// FIXME: This is a hack to try to force the driver to do something we can
// recognize. We need to extend the driver library to support this use model
// (basically, exactly one input, and the operation mode is hard wired).
SmallVector<const char *, 16> Args(argv, argv + argc);
Args.push_back("-fsyntax-only");
std::unique_ptr<Compilation> C(TheDriver.BuildCompilation(Args));
if (!C)
return 0;
// FIXME: This is copied from ASTUnit.cpp; simplify and eliminate.
// 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 = C->getJobs();
if (Jobs.size() != 1 || !isa<driver::Command>(*Jobs.begin())) {
SmallString<256> Msg;
llvm::raw_svector_ostream OS(Msg);
Jobs.Print(OS, "; ", true);
Diags.Report(diag::err_fe_expected_compiler_job) << OS.str();
return 1;
}
const driver::Command &Cmd = cast<driver::Command>(*Jobs.begin());
if (llvm::StringRef(Cmd.getCreator().getName()) != "clang") {
Diags.Report(diag::err_fe_expected_clang_command);
return 1;
}
// Initialize a compiler invocation object from the clang (-cc1) arguments.
const llvm::opt::ArgStringList &CCArgs = Cmd.getArguments();
std::unique_ptr<CompilerInvocation> CI(new CompilerInvocation);
CompilerInvocation::CreateFromArgs(*CI, CCArgs, Diags);
// Show the invocation, with -v.
if (CI->getHeaderSearchOpts().Verbose) {
llvm::errs() << "clang invocation:\n";
Jobs.Print(llvm::errs(), "\n", true);
llvm::errs() << "\n";
}
// FIXME: This is copied from cc1_main.cpp; simplify and eliminate.
// Create a compiler instance to handle the actual work.
CompilerInstance Clang;
Clang.setInvocation(std::move(CI));
// Create the compilers actual diagnostics engine.
Clang.createDiagnostics();
if (!Clang.hasDiagnostics())
return 1;
// Infer the builtin include path if unspecified.
if (Clang.getHeaderSearchOpts().UseBuiltinIncludes &&
Clang.getHeaderSearchOpts().ResourceDir.empty())
Clang.getHeaderSearchOpts().ResourceDir =
CompilerInvocation::GetResourcesPath(argv[0], MainAddr);
// Create and execute the frontend to generate an LLVM bitcode module.
std::unique_ptr<CodeGenAction> Act(new EmitLLVMOnlyAction());
if (!Clang.ExecuteAction(*Act))
return 1;
llvm::InitializeNativeTarget();
llvm::InitializeNativeTargetAsmPrinter();
int Res = 255;
std::unique_ptr<llvm::LLVMContext> Ctx(Act->takeLLVMContext());
std::unique_ptr<llvm::Module> Module = Act->takeModule();
if (Module) {
auto J = ExitOnErr(llvm::orc::SimpleJIT::Create());
ExitOnErr(J->addModule(
llvm::orc::ThreadSafeModule(std::move(Module), std::move(Ctx))));
auto Main = (int (*)(...))ExitOnErr(J->getSymbolAddress("main"));
Res = Main();
}
// Shutdown.
llvm::llvm_shutdown();
return Res;
}

3
clang/unittests/Interpreter/CMakeLists.txt
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@ -1,8 +1,5 @@
set(LLVM_LINK_COMPONENTS
${LLVM_TARGETS_TO_BUILD}
Core
OrcJIT
Support
)
add_clang_unittest(ClangReplInterpreterTests