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Imported Upstream version 5.18.0.167

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Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a
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Xamarin Public Jenkins (auto-signing)
2018-10-20 08:25:10 +00:00
parent e19d552987
commit b084638f15
28489 changed files with 184 additions and 3866856 deletions
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21
external/llvm/examples/Kaleidoscope/BuildingAJIT/Chapter5/CMakeLists.txt vendored
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add_subdirectory(Server)
set(LLVM_LINK_COMPONENTS
Analysis
Core
ExecutionEngine
InstCombine
Object
OrcJIT
RuntimeDyld
ScalarOpts
Support
TransformUtils
native
)
add_kaleidoscope_chapter(BuildingAJIT-Ch5
toy.cpp
)
export_executable_symbols(BuildingAJIT-Ch5)

253
external/llvm/examples/Kaleidoscope/BuildingAJIT/Chapter5/KaleidoscopeJIT.h vendored
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//===- KaleidoscopeJIT.h - A simple JIT for Kaleidoscope --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Contains a simple JIT definition for use in the kaleidoscope tutorials.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H
#define LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H
#include "RemoteJITUtils.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Triple.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/JITSymbol.h"
#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
#include "llvm/ExecutionEngine/Orc/IndirectionUtils.h"
#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
#include "llvm/ExecutionEngine/Orc/IRTransformLayer.h"
#include "llvm/ExecutionEngine/Orc/LambdaResolver.h"
#include "llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h"
#include "llvm/ExecutionEngine/Orc/OrcRemoteTargetClient.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Mangler.h"
#include "llvm/Support/DynamicLibrary.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Scalar/GVN.h"
#include <algorithm>
#include <cassert>
#include <cstdlib>
#include <memory>
#include <string>
#include <vector>
class PrototypeAST;
class ExprAST;
/// FunctionAST - This class represents a function definition itself.
class FunctionAST {
std::unique_ptr<PrototypeAST> Proto;
std::unique_ptr<ExprAST> Body;
public:
FunctionAST(std::unique_ptr<PrototypeAST> Proto,
std::unique_ptr<ExprAST> Body)
: Proto(std::move(Proto)), Body(std::move(Body)) {}
const PrototypeAST& getProto() const;
const std::string& getName() const;
llvm::Function *codegen();
};
/// This will compile FnAST to IR, rename the function to add the given
/// suffix (needed to prevent a name-clash with the function's stub),
/// and then take ownership of the module that the function was compiled
/// into.
std::unique_ptr<llvm::Module>
irgenAndTakeOwnership(FunctionAST &FnAST, const std::string &Suffix);
namespace llvm {
namespace orc {
// Typedef the remote-client API.
using MyRemote = remote::OrcRemoteTargetClient;
class KaleidoscopeJIT {
private:
std::unique_ptr<TargetMachine> TM;
const DataLayout DL;
RTDyldObjectLinkingLayer ObjectLayer;
IRCompileLayer<decltype(ObjectLayer), SimpleCompiler> CompileLayer;
using OptimizeFunction =
std::function<std::shared_ptr<Module>(std::shared_ptr<Module>)>;
IRTransformLayer<decltype(CompileLayer), OptimizeFunction> OptimizeLayer;
JITCompileCallbackManager *CompileCallbackMgr;
std::unique_ptr<IndirectStubsManager> IndirectStubsMgr;
MyRemote &Remote;
public:
using ModuleHandle = decltype(OptimizeLayer)::ModuleHandleT;
KaleidoscopeJIT(MyRemote &Remote)
: TM(EngineBuilder().selectTarget(Triple(Remote.getTargetTriple()), "",
"", SmallVector<std::string, 0>())),
DL(TM->createDataLayout()),
ObjectLayer([&Remote]() {
return cantFail(Remote.createRemoteMemoryManager());
}),
CompileLayer(ObjectLayer, SimpleCompiler(*TM)),
OptimizeLayer(CompileLayer,
[this](std::shared_ptr<Module> M) {
return optimizeModule(std::move(M));
}),
Remote(Remote) {
auto CCMgrOrErr = Remote.enableCompileCallbacks(0);
if (!CCMgrOrErr) {
logAllUnhandledErrors(CCMgrOrErr.takeError(), errs(),
"Error enabling remote compile callbacks:");
exit(1);
}
CompileCallbackMgr = &*CCMgrOrErr;
IndirectStubsMgr = cantFail(Remote.createIndirectStubsManager());
llvm::sys::DynamicLibrary::LoadLibraryPermanently(nullptr);
}
TargetMachine &getTargetMachine() { return *TM; }
ModuleHandle addModule(std::unique_ptr<Module> M) {
// Build our symbol resolver:
// Lambda 1: Look back into the JIT itself to find symbols that are part of
// the same "logical dylib".
// Lambda 2: Search for external symbols in the host process.
auto Resolver = createLambdaResolver(
[&](const std::string &Name) {
if (auto Sym = IndirectStubsMgr->findStub(Name, false))
return Sym;
if (auto Sym = OptimizeLayer.findSymbol(Name, false))
return Sym;
return JITSymbol(nullptr);
},
[&](const std::string &Name) {
if (auto AddrOrErr = Remote.getSymbolAddress(Name))
return JITSymbol(*AddrOrErr, JITSymbolFlags::Exported);
else {
logAllUnhandledErrors(AddrOrErr.takeError(), errs(),
"Error resolving remote symbol:");
exit(1);
}
return JITSymbol(nullptr);
});
// Add the set to the JIT with the resolver we created above and a newly
// created SectionMemoryManager.
return cantFail(OptimizeLayer.addModule(std::move(M),
std::move(Resolver)));
}
Error addFunctionAST(std::unique_ptr<FunctionAST> FnAST) {
// Create a CompileCallback - this is the re-entry point into the compiler
// for functions that haven't been compiled yet.
auto CCInfo = cantFail(CompileCallbackMgr->getCompileCallback());
// Create an indirect stub. This serves as the functions "canonical
// definition" - an unchanging (constant address) entry point to the
// function implementation.
// Initially we point the stub's function-pointer at the compile callback
// that we just created. In the compile action for the callback (see below)
// we will update the stub's function pointer to point at the function
// implementation that we just implemented.
if (auto Err = IndirectStubsMgr->createStub(mangle(FnAST->getName()),
CCInfo.getAddress(),
JITSymbolFlags::Exported))
return Err;
// Move ownership of FnAST to a shared pointer - C++11 lambdas don't support
// capture-by-move, which is be required for unique_ptr.
auto SharedFnAST = std::shared_ptr<FunctionAST>(std::move(FnAST));
// Set the action to compile our AST. This lambda will be run if/when
// execution hits the compile callback (via the stub).
//
// The steps to compile are:
// (1) IRGen the function.
// (2) Add the IR module to the JIT to make it executable like any other
// module.
// (3) Use findSymbol to get the address of the compiled function.
// (4) Update the stub pointer to point at the implementation so that
/// subsequent calls go directly to it and bypass the compiler.
// (5) Return the address of the implementation: this lambda will actually
// be run inside an attempted call to the function, and we need to
// continue on to the implementation to complete the attempted call.
// The JIT runtime (the resolver block) will use the return address of
// this function as the address to continue at once it has reset the
// CPU state to what it was immediately before the call.
CCInfo.setCompileAction(
[this, SharedFnAST]() {
auto M = irgenAndTakeOwnership(*SharedFnAST, "$impl");
addModule(std::move(M));
auto Sym = findSymbol(SharedFnAST->getName() + "$impl");
assert(Sym && "Couldn't find compiled function?");
JITTargetAddress SymAddr = cantFail(Sym.getAddress());
if (auto Err =
IndirectStubsMgr->updatePointer(mangle(SharedFnAST->getName()),
SymAddr)) {
logAllUnhandledErrors(std::move(Err), errs(),
"Error updating function pointer: ");
exit(1);
}
return SymAddr;
});
return Error::success();
}
Error executeRemoteExpr(JITTargetAddress ExprAddr) {
return Remote.callVoidVoid(ExprAddr);
}
JITSymbol findSymbol(const std::string Name) {
return OptimizeLayer.findSymbol(mangle(Name), true);
}
void removeModule(ModuleHandle H) {
cantFail(OptimizeLayer.removeModule(H));
}
private:
std::string mangle(const std::string &Name) {
std::string MangledName;
raw_string_ostream MangledNameStream(MangledName);
Mangler::getNameWithPrefix(MangledNameStream, Name, DL);
return MangledNameStream.str();
}
std::shared_ptr<Module> optimizeModule(std::shared_ptr<Module> M) {
// Create a function pass manager.
auto FPM = llvm::make_unique<legacy::FunctionPassManager>(M.get());
// Add some optimizations.
FPM->add(createInstructionCombiningPass());
FPM->add(createReassociatePass());
FPM->add(createGVNPass());
FPM->add(createCFGSimplificationPass());
FPM->doInitialization();
// Run the optimizations over all functions in the module being added to
// the JIT.
for (auto &F : *M)
FPM->run(F);
return M;
}
};
} // end namespace orc
} // end namespace llvm
#endif // LLVM_EXECUTIONENGINE_ORC_KALEIDOSCOPEJIT_H

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external/llvm/examples/Kaleidoscope/BuildingAJIT/Chapter5/RemoteJITUtils.h vendored
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//===-- RemoteJITUtils.h - Utilities for remote-JITing with LLI -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Utilities for remote-JITing with LLI.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLI_REMOTEJITUTILS_H
#define LLVM_TOOLS_LLI_REMOTEJITUTILS_H
#include "llvm/ExecutionEngine/Orc/RawByteChannel.h"
#include "llvm/Support/Error.h"
#include <cassert>
#include <cerrno>
#include <system_error>
#if !defined(_MSC_VER) && !defined(__MINGW32__)
#include <unistd.h>
#else
#include <io.h>
#endif
/// RPC channel that reads from and writes from file descriptors.
class FDRPCChannel final : public llvm::orc::rpc::RawByteChannel {
public:
FDRPCChannel(int InFD, int OutFD) : InFD(InFD), OutFD(OutFD) {}
llvm::Error readBytes(char *Dst, unsigned Size) override {
assert(Dst && "Attempt to read into null.");
ssize_t Completed = 0;
while (Completed < static_cast<ssize_t>(Size)) {
ssize_t Read = ::read(InFD, Dst + Completed, Size - Completed);
if (Read <= 0) {
auto ErrNo = errno;
if (ErrNo == EAGAIN || ErrNo == EINTR)
continue;
else
return llvm::errorCodeToError(
std::error_code(errno, std::generic_category()));
}
Completed += Read;
}
return llvm::Error::success();
}
llvm::Error appendBytes(const char *Src, unsigned Size) override {
assert(Src && "Attempt to append from null.");
ssize_t Completed = 0;
while (Completed < static_cast<ssize_t>(Size)) {
ssize_t Written = ::write(OutFD, Src + Completed, Size - Completed);
if (Written < 0) {
auto ErrNo = errno;
if (ErrNo == EAGAIN || ErrNo == EINTR)
continue;
else
return llvm::errorCodeToError(
std::error_code(errno, std::generic_category()));
}
Completed += Written;
}
return llvm::Error::success();
}
llvm::Error send() override { return llvm::Error::success(); }
private:
int InFD, OutFD;
};
#endif // LLVM_TOOLS_LLI_REMOTEJITUTILS_H

19
external/llvm/examples/Kaleidoscope/BuildingAJIT/Chapter5/Server/CMakeLists.txt vendored
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set(LLVM_LINK_COMPONENTS
Analysis
Core
ExecutionEngine
InstCombine
Object
OrcJIT
RuntimeDyld
ScalarOpts
Support
TransformUtils
native
)
add_kaleidoscope_chapter(BuildingAJIT-Ch5-Server
server.cpp
)
export_executable_symbols(BuildingAJIT-Ch5-Server)

111
external/llvm/examples/Kaleidoscope/BuildingAJIT/Chapter5/Server/server.cpp vendored
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#include "../RemoteJITUtils.h"
#include "llvm/ExecutionEngine/RTDyldMemoryManager.h"
#include "llvm/ExecutionEngine/Orc/OrcRemoteTargetServer.h"
#include "llvm/ExecutionEngine/Orc/OrcABISupport.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/DynamicLibrary.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/TargetSelect.h"
#include <cstdint>
#include <cstdio>
#include <cstring>
#include <string>
#include <netinet/in.h>
#include <sys/socket.h>
using namespace llvm;
using namespace llvm::orc;
// Command line argument for TCP port.
cl::opt<uint32_t> Port("port",
cl::desc("TCP port to listen on"),
cl::init(20000));
ExitOnError ExitOnErr;
using MainFun = int (*)(int, const char*[]);
template <typename NativePtrT>
NativePtrT MakeNative(uint64_t P) {
return reinterpret_cast<NativePtrT>(static_cast<uintptr_t>(P));
}
extern "C"
void printExprResult(double Val) {
printf("Expression evaluated to: %f\n", Val);
}
// --- LAZY COMPILE TEST ---
int main(int argc, char* argv[]) {
if (argc == 0)
ExitOnErr.setBanner("jit_server: ");
else
ExitOnErr.setBanner(std::string(argv[0]) + ": ");
// --- Initialize LLVM ---
cl::ParseCommandLineOptions(argc, argv, "LLVM lazy JIT example.\n");
InitializeNativeTarget();
InitializeNativeTargetAsmPrinter();
InitializeNativeTargetAsmParser();
if (sys::DynamicLibrary::LoadLibraryPermanently(nullptr)) {
errs() << "Error loading program symbols.\n";
return 1;
}
// --- Initialize remote connection ---
int sockfd = socket(PF_INET, SOCK_STREAM, 0);
sockaddr_in servAddr, clientAddr;
socklen_t clientAddrLen = sizeof(clientAddr);
memset(&servAddr, 0, sizeof(servAddr));
servAddr.sin_family = PF_INET;
servAddr.sin_family = INADDR_ANY;
servAddr.sin_port = htons(Port);
{
// avoid "Address already in use" error.
int yes = 1;
if (setsockopt(sockfd,SOL_SOCKET,SO_REUSEADDR,&yes,sizeof(int)) == -1) {
errs() << "Error calling setsockopt.\n";
return 1;
}
}
if (bind(sockfd, reinterpret_cast<sockaddr*>(&servAddr),
sizeof(servAddr)) < 0) {
errs() << "Error on binding.\n";
return 1;
}
listen(sockfd, 1);
int newsockfd = accept(sockfd, reinterpret_cast<sockaddr*>(&clientAddr),
&clientAddrLen);
auto SymbolLookup =
[](const std::string &Name) {
return RTDyldMemoryManager::getSymbolAddressInProcess(Name);
};
auto RegisterEHFrames =
[](uint8_t *Addr, uint32_t Size) {
RTDyldMemoryManager::registerEHFramesInProcess(Addr, Size);
};
auto DeregisterEHFrames =
[](uint8_t *Addr, uint32_t Size) {
RTDyldMemoryManager::deregisterEHFramesInProcess(Addr, Size);
};
FDRPCChannel TCPChannel(newsockfd, newsockfd);
using MyServerT = remote::OrcRemoteTargetServer<FDRPCChannel, OrcX86_64_SysV>;
MyServerT Server(TCPChannel, SymbolLookup, RegisterEHFrames, DeregisterEHFrames);
while (!Server.receivedTerminate())
ExitOnErr(Server.handleOne());
return 0;
}

1306
external/llvm/examples/Kaleidoscope/BuildingAJIT/Chapter5/toy.cpp vendored
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