forked from OSchip/llvm-project
68 lines
2.3 KiB
C++
68 lines
2.3 KiB
C++
//===----- JITTargetMachineBuilder.cpp - Build TargetMachines for JIT -----===//
|
|
//
|
|
// 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 "llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h"
|
|
|
|
#include "llvm/Support/Host.h"
|
|
#include "llvm/Support/TargetRegistry.h"
|
|
|
|
namespace llvm {
|
|
namespace orc {
|
|
|
|
JITTargetMachineBuilder::JITTargetMachineBuilder(Triple TT)
|
|
: TT(std::move(TT)) {
|
|
Options.EmulatedTLS = true;
|
|
Options.ExplicitEmulatedTLS = true;
|
|
}
|
|
|
|
Expected<JITTargetMachineBuilder> JITTargetMachineBuilder::detectHost() {
|
|
// FIXME: getProcessTriple is bogus. It returns the host LLVM was compiled on,
|
|
// rather than a valid triple for the current process.
|
|
JITTargetMachineBuilder TMBuilder((Triple(sys::getProcessTriple())));
|
|
|
|
// Retrieve host CPU name and sub-target features and add them to builder.
|
|
// Relocation model, code model and codegen opt level are kept to default
|
|
// values.
|
|
llvm::StringMap<bool> FeatureMap;
|
|
llvm::sys::getHostCPUFeatures(FeatureMap);
|
|
for (auto &Feature : FeatureMap)
|
|
TMBuilder.getFeatures().AddFeature(Feature.first(), Feature.second);
|
|
|
|
TMBuilder.setCPU(std::string(llvm::sys::getHostCPUName()));
|
|
|
|
return TMBuilder;
|
|
}
|
|
|
|
Expected<std::unique_ptr<TargetMachine>>
|
|
JITTargetMachineBuilder::createTargetMachine() {
|
|
|
|
std::string ErrMsg;
|
|
auto *TheTarget = TargetRegistry::lookupTarget(TT.getTriple(), ErrMsg);
|
|
if (!TheTarget)
|
|
return make_error<StringError>(std::move(ErrMsg), inconvertibleErrorCode());
|
|
|
|
auto *TM =
|
|
TheTarget->createTargetMachine(TT.getTriple(), CPU, Features.getString(),
|
|
Options, RM, CM, OptLevel, /*JIT*/ true);
|
|
if (!TM)
|
|
return make_error<StringError>("Could not allocate target machine",
|
|
inconvertibleErrorCode());
|
|
|
|
return std::unique_ptr<TargetMachine>(TM);
|
|
}
|
|
|
|
JITTargetMachineBuilder &JITTargetMachineBuilder::addFeatures(
|
|
const std::vector<std::string> &FeatureVec) {
|
|
for (const auto &F : FeatureVec)
|
|
Features.AddFeature(F);
|
|
return *this;
|
|
}
|
|
|
|
} // End namespace orc.
|
|
} // End namespace llvm.
|