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This revision was automatically updated to reflect the committed changes.
tianshilei1992 marked an inline comment as done.
Closed by commit rG58906e4901ec: [OpenMP] Introduce basic JIT support to OpenMP
target offloading (authored by tianshilei1992).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D139287/new/
https://reviews.llvm.org/D139287
Files:
openmp/libomptarget/CMakeLists.txt
openmp/libomptarget/plugins-nextgen/CMakeLists.txt
openmp/libomptarget/plugins-nextgen/common/PluginInterface/CMakeLists.txt
openmp/libomptarget/plugins-nextgen/common/PluginInterface/JIT.cpp
openmp/libomptarget/plugins-nextgen/common/PluginInterface/JIT.h
openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.cpp
openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.h
openmp/libomptarget/plugins-nextgen/cuda/src/rtl.cpp
openmp/libomptarget/plugins-nextgen/generic-elf-64bit/src/rtl.cpp
openmp/libomptarget/test/lit.cfg
Index: openmp/libomptarget/test/lit.cfg
===================================================================
--- openmp/libomptarget/test/lit.cfg
+++ openmp/libomptarget/test/lit.cfg
@@ -34,6 +34,15 @@
else:
config.environment[name] = value
+# Evalute the environment variable which is a string boolean value.
+def evaluate_bool_env(env):
+ env = env.lower()
+ possible_true_values = ["on", "true", "1"]
+ for v in possible_true_values:
+ if env == v:
+ return True
+ return False
+
# name: The name of this test suite.
config.name = 'libomptarget :: ' + config.libomptarget_current_target
@@ -111,10 +120,17 @@
config.test_flags += " --libomptarget-nvptx-bc-path=" + config.library_dir
if config.libomptarget_current_target.endswith('-LTO'):
config.test_flags += " -foffload-lto"
+ if config.libomptarget_current_target.endswith('-JIT-LTO') and evaluate_bool_env(
+ config.environment['LIBOMPTARGET_NEXTGEN_PLUGINS']
+ ):
+ config.test_flags += " -foffload-lto"
+ config.test_flags += " -Wl,--embed-bitcode"
def remove_suffix_if_present(name):
if name.endswith('-LTO'):
return name[:-4]
+ elif name.endswith('-JIT-LTO'):
+ return name[:-8]
else:
return name
Index: openmp/libomptarget/plugins-nextgen/generic-elf-64bit/src/rtl.cpp
===================================================================
--- openmp/libomptarget/plugins-nextgen/generic-elf-64bit/src/rtl.cpp
+++ openmp/libomptarget/plugins-nextgen/generic-elf-64bit/src/rtl.cpp
@@ -364,6 +364,10 @@
Expected<bool> isImageCompatible(__tgt_image_info *Info) const override {
return true;
}
+
+ Triple::ArchType getTripleArch() const override {
+ return Triple::LIBOMPTARGET_NEXTGEN_GENERIC_PLUGIN_TRIPLE;
+ }
};
GenericPluginTy *Plugin::createPlugin() { return new GenELF64PluginTy(); }
Index: openmp/libomptarget/plugins-nextgen/cuda/src/rtl.cpp
===================================================================
--- openmp/libomptarget/plugins-nextgen/cuda/src/rtl.cpp
+++ openmp/libomptarget/plugins-nextgen/cuda/src/rtl.cpp
@@ -278,6 +278,14 @@
GridValues.GV_Warp_Size))
return Err;
+ if (auto Err = getDeviceAttr(CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MAJOR,
+ ComputeCapability.Major))
+ return Err;
+
+ if (auto Err = getDeviceAttr(CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MINOR,
+ ComputeCapability.Minor))
+ return Err;
+
return Plugin::success();
}
@@ -794,6 +802,9 @@
return Plugin::check(Res, "Error in cuDeviceGetAttribute: %s");
}
+ /// See GenericDeviceTy::getArch().
+ std::string getArch() const override { return ComputeCapability.str(); }
+
private:
using CUDAStreamManagerTy = GenericDeviceResourceManagerTy<CUDAStreamRef>;
using CUDAEventManagerTy = GenericDeviceResourceManagerTy<CUDAEventRef>;
@@ -810,6 +821,15 @@
/// The CUDA device handler.
CUdevice Device = CU_DEVICE_INVALID;
+
+ /// The compute capability of the corresponding CUDA device.
+ struct ComputeCapabilityTy {
+ uint32_t Major;
+ uint32_t Minor;
+ std::string str() const {
+ return "sm_" + std::to_string(Major * 10 + Minor);
+ }
+ } ComputeCapability;
};
Error CUDAKernelTy::launchImpl(GenericDeviceTy &GenericDevice,
@@ -908,6 +928,11 @@
/// Get the ELF code for recognizing the compatible image binary.
uint16_t getMagicElfBits() const override { return ELF::EM_CUDA; }
+ Triple::ArchType getTripleArch() const override {
+ // TODO: I think we can drop the support for 32-bit NVPTX devices.
+ return Triple::nvptx64;
+ }
+
/// Check whether the image is compatible with the available CUDA devices.
Expected<bool> isImageCompatible(__tgt_image_info *Info) const override {
for (int32_t DevId = 0; DevId < getNumDevices(); ++DevId) {
Index: openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.h
===================================================================
--- openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.h
+++ openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.h
@@ -26,6 +26,7 @@
#include "omptarget.h"
#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/Triple.h"
#include "llvm/Frontend/OpenMP/OMPConstants.h"
#include "llvm/Frontend/OpenMP/OMPGridValues.h"
#include "llvm/Support/Allocator.h"
@@ -377,6 +378,17 @@
}
uint32_t getDynamicMemorySize() const { return OMPX_SharedMemorySize; }
+ /// Get target architecture.
+ virtual std::string getArch() const {
+ llvm_unreachable("device doesn't support JIT");
+ }
+
+ /// Post processing after jit backend. The ownership of \p MB will be taken.
+ virtual Expected<std::unique_ptr<MemoryBuffer>>
+ doJITPostProcessing(std::unique_ptr<MemoryBuffer> MB) const {
+ return MB;
+ }
+
private:
/// Register offload entry for global variable.
Error registerGlobalOffloadEntry(DeviceImageTy &DeviceImage,
@@ -526,6 +538,11 @@
/// Get the ELF code to recognize the binary image of this plugin.
virtual uint16_t getMagicElfBits() const = 0;
+ /// Get the target triple of this plugin.
+ virtual Triple::ArchType getTripleArch() const {
+ llvm_unreachable("target doesn't support jit");
+ }
+
/// Allocate a structure using the internal allocator.
template <typename Ty> Ty *allocate() {
return reinterpret_cast<Ty *>(Allocator.Allocate(sizeof(Ty), alignof(Ty)));
Index: openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.cpp
===================================================================
--- openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.cpp
+++ openmp/libomptarget/plugins-nextgen/common/PluginInterface/PluginInterface.cpp
@@ -11,6 +11,7 @@
#include "PluginInterface.h"
#include "Debug.h"
#include "GlobalHandler.h"
+#include "JIT.h"
#include "elf_common.h"
#include "omptarget.h"
#include "omptargetplugin.h"
@@ -629,7 +630,10 @@
if (!Plugin::isActive())
return false;
- return elf_check_machine(TgtImage, Plugin::get().getMagicElfBits());
+ if (elf_check_machine(TgtImage, Plugin::get().getMagicElfBits()))
+ return true;
+
+ return jit::checkBitcodeImage(TgtImage, Plugin::get().getTripleArch());
}
int32_t __tgt_rtl_is_valid_binary_info(__tgt_device_image *TgtImage,
@@ -700,7 +704,37 @@
__tgt_target_table *__tgt_rtl_load_binary(int32_t DeviceId,
__tgt_device_image *TgtImage) {
GenericPluginTy &Plugin = Plugin::get();
- auto TableOrErr = Plugin.getDevice(DeviceId).loadBinary(Plugin, TgtImage);
+ GenericDeviceTy &Device = Plugin.getDevice(DeviceId);
+
+ // If it is a bitcode image, we have to jit the binary image before loading to
+ // the device.
+ {
+ UInt32Envar JITOptLevel("LIBOMPTARGET_JIT_OPT_LEVEL", 3);
+ Triple::ArchType TA = Plugin.getTripleArch();
+ std::string Arch = Device.getArch();
+
+ jit::PostProcessingFn PostProcessing =
+ [&Device](std::unique_ptr<MemoryBuffer> MB)
+ -> Expected<std::unique_ptr<MemoryBuffer>> {
+ return Device.doJITPostProcessing(std::move(MB));
+ };
+
+ if (jit::checkBitcodeImage(TgtImage, TA)) {
+ auto TgtImageOrErr =
+ jit::compile(TgtImage, TA, Arch, JITOptLevel, PostProcessing);
+ if (!TgtImageOrErr) {
+ auto Err = TgtImageOrErr.takeError();
+ REPORT("Failure to jit binary image from bitcode image %p on device "
+ "%d: %s\n",
+ TgtImage, DeviceId, toString(std::move(Err)).data());
+ return nullptr;
+ }
+
+ TgtImage = *TgtImageOrErr;
+ }
+ }
+
+ auto TableOrErr = Device.loadBinary(Plugin, TgtImage);
if (!TableOrErr) {
auto Err = TableOrErr.takeError();
REPORT("Failure to load binary image %p on device %d: %s\n", TgtImage,
Index: openmp/libomptarget/plugins-nextgen/common/PluginInterface/JIT.h
===================================================================
--- /dev/null
+++ openmp/libomptarget/plugins-nextgen/common/PluginInterface/JIT.h
@@ -0,0 +1,50 @@
+//===- JIT.h - Target independent JIT infrastructure ----------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef OPENMP_LIBOMPTARGET_PLUGINS_NEXTGEN_COMMON_JIT_H
+#define OPENMP_LIBOMPTARGET_PLUGINS_NEXTGEN_COMMON_JIT_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/ADT/Triple.h"
+#include "llvm/Support/Error.h"
+
+#include <functional>
+#include <memory>
+#include <string>
+
+struct __tgt_device_image;
+
+namespace llvm {
+class MemoryBuffer;
+
+namespace omp {
+namespace jit {
+
+/// Function type for a callback that will be called after the backend is
+/// called.
+using PostProcessingFn = std::function<Expected<std::unique_ptr<MemoryBuffer>>(
+ std::unique_ptr<MemoryBuffer>)>;
+
+/// Check if \p Image contains bitcode with triple \p Triple.
+bool checkBitcodeImage(__tgt_device_image *Image, Triple::ArchType TA);
+
+/// Compile the bitcode image \p Image and generate the binary image that can be
+/// loaded to the target device of the triple \p Triple architecture \p MCpu. \p
+/// PostProcessing will be called after codegen to handle cases such as assember
+/// as an external tool.
+Expected<__tgt_device_image *> compile(__tgt_device_image *Image,
+ Triple::ArchType TA, std::string MCpu,
+ unsigned OptLevel,
+ PostProcessingFn PostProcessing);
+} // namespace jit
+} // namespace omp
+} // namespace llvm
+
+#endif // OPENMP_LIBOMPTARGET_PLUGINS_NEXTGEN_COMMON_JIT_H
Index: openmp/libomptarget/plugins-nextgen/common/PluginInterface/JIT.cpp
===================================================================
--- /dev/null
+++ openmp/libomptarget/plugins-nextgen/common/PluginInterface/JIT.cpp
@@ -0,0 +1,366 @@
+//===- JIT.cpp - Target independent JIT infrastructure --------------------===//
+//
+// 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 "JIT.h"
+#include "Debug.h"
+
+#include "omptarget.h"
+
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/CodeGen/CommandFlags.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LLVMRemarkStreamer.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/IRReader/IRReader.h"
+#include "llvm/InitializePasses.h"
+#include "llvm/MC/SubtargetFeature.h"
+#include "llvm/MC/TargetRegistry.h"
+#include "llvm/Object/IRObjectFile.h"
+#include "llvm/Passes/OptimizationLevel.h"
+#include "llvm/Passes/PassBuilder.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/SourceMgr.h"
+#include "llvm/Support/TargetSelect.h"
+#include "llvm/Support/TimeProfiler.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetOptions.h"
+
+#include <mutex>
+
+using namespace llvm;
+using namespace llvm::object;
+using namespace omp;
+
+static codegen::RegisterCodeGenFlags RCGF;
+
+namespace {
+std::once_flag InitFlag;
+
+void init(Triple TT) {
+ if (TT.isNVPTX()) {
+ LLVMInitializeNVPTXTargetInfo();
+ LLVMInitializeNVPTXTarget();
+ LLVMInitializeNVPTXTargetMC();
+ LLVMInitializeNVPTXAsmPrinter();
+ } else if (TT.isAMDGPU()) {
+ LLVMInitializeAMDGPUTargetInfo();
+ LLVMInitializeAMDGPUTarget();
+ LLVMInitializeAMDGPUTargetMC();
+ LLVMInitializeAMDGPUAsmPrinter();
+ } else {
+ FAILURE_MESSAGE("unsupported JIT target");
+ abort();
+ }
+
+ // Initialize passes
+ PassRegistry &Registry = *PassRegistry::getPassRegistry();
+ initializeCore(Registry);
+ initializeScalarOpts(Registry);
+ initializeVectorization(Registry);
+ initializeIPO(Registry);
+ initializeAnalysis(Registry);
+ initializeTransformUtils(Registry);
+ initializeInstCombine(Registry);
+ initializeTarget(Registry);
+
+ initializeExpandLargeDivRemLegacyPassPass(Registry);
+ initializeExpandLargeFpConvertLegacyPassPass(Registry);
+ initializeExpandMemCmpPassPass(Registry);
+ initializeScalarizeMaskedMemIntrinLegacyPassPass(Registry);
+ initializeSelectOptimizePass(Registry);
+ initializeCodeGenPreparePass(Registry);
+ initializeAtomicExpandPass(Registry);
+ initializeRewriteSymbolsLegacyPassPass(Registry);
+ initializeWinEHPreparePass(Registry);
+ initializeDwarfEHPrepareLegacyPassPass(Registry);
+ initializeSafeStackLegacyPassPass(Registry);
+ initializeSjLjEHPreparePass(Registry);
+ initializePreISelIntrinsicLoweringLegacyPassPass(Registry);
+ initializeGlobalMergePass(Registry);
+ initializeIndirectBrExpandPassPass(Registry);
+ initializeInterleavedLoadCombinePass(Registry);
+ initializeInterleavedAccessPass(Registry);
+ initializeUnreachableBlockElimLegacyPassPass(Registry);
+ initializeExpandReductionsPass(Registry);
+ initializeExpandVectorPredicationPass(Registry);
+ initializeWasmEHPreparePass(Registry);
+ initializeWriteBitcodePassPass(Registry);
+ initializeHardwareLoopsPass(Registry);
+ initializeTypePromotionPass(Registry);
+ initializeReplaceWithVeclibLegacyPass(Registry);
+ initializeJMCInstrumenterPass(Registry);
+}
+
+Expected<std::unique_ptr<Module>>
+createModuleFromImage(__tgt_device_image *Image, LLVMContext &Context) {
+ StringRef Data((const char *)Image->ImageStart,
+ (char *)Image->ImageEnd - (char *)Image->ImageStart);
+ std::unique_ptr<MemoryBuffer> MB = MemoryBuffer::getMemBuffer(
+ Data, /* BufferName */ "", /* RequiresNullTerminator */ false);
+ SMDiagnostic Err;
+ auto Mod = parseIR(*MB, Err, Context);
+ if (!Mod)
+ return make_error<StringError>("Failed to create module",
+ inconvertibleErrorCode());
+ return Mod;
+}
+
+CodeGenOpt::Level getCGOptLevel(unsigned OptLevel) {
+ switch (OptLevel) {
+ case 0:
+ return CodeGenOpt::None;
+ case 1:
+ return CodeGenOpt::Less;
+ case 2:
+ return CodeGenOpt::Default;
+ case 3:
+ return CodeGenOpt::Aggressive;
+ }
+ llvm_unreachable("Invalid optimization level");
+}
+
+OptimizationLevel getOptLevel(unsigned OptLevel) {
+ switch (OptLevel) {
+ case 0:
+ return OptimizationLevel::O0;
+ case 1:
+ return OptimizationLevel::O1;
+ case 2:
+ return OptimizationLevel::O2;
+ case 3:
+ return OptimizationLevel::O3;
+ }
+ llvm_unreachable("Invalid optimization level");
+}
+
+Expected<std::unique_ptr<TargetMachine>>
+createTargetMachine(Module &M, std::string CPU, unsigned OptLevel) {
+ Triple TT(M.getTargetTriple());
+ CodeGenOpt::Level CGOptLevel = getCGOptLevel(OptLevel);
+
+ std::string Msg;
+ const Target *T = TargetRegistry::lookupTarget(M.getTargetTriple(), Msg);
+ if (!T)
+ return make_error<StringError>(Msg, inconvertibleErrorCode());
+
+ SubtargetFeatures Features;
+ Features.getDefaultSubtargetFeatures(TT);
+
+ std::optional<Reloc::Model> RelocModel;
+ if (M.getModuleFlag("PIC Level"))
+ RelocModel =
+ M.getPICLevel() == PICLevel::NotPIC ? Reloc::Static : Reloc::PIC_;
+
+ std::optional<CodeModel::Model> CodeModel = M.getCodeModel();
+
+ TargetOptions Options = codegen::InitTargetOptionsFromCodeGenFlags(TT);
+
+ std::unique_ptr<TargetMachine> TM(
+ T->createTargetMachine(M.getTargetTriple(), CPU, Features.getString(),
+ Options, RelocModel, CodeModel, CGOptLevel));
+ if (!TM)
+ return make_error<StringError>("Failed to create target machine",
+ inconvertibleErrorCode());
+ return TM;
+}
+
+///
+class JITEngine {
+public:
+ JITEngine(Triple::ArchType TA, std::string MCpu)
+ : TT(Triple::getArchTypeName(TA)), CPU(MCpu) {
+ std::call_once(InitFlag, init, TT);
+ }
+
+ /// Run jit compilation. It is expected to get a memory buffer containing the
+ /// generated device image that could be loaded to the device directly.
+ Expected<std::unique_ptr<MemoryBuffer>>
+ run(__tgt_device_image *Image, unsigned OptLevel,
+ jit::PostProcessingFn PostProcessing);
+
+private:
+ /// Run backend, which contains optimization and code generation.
+ Expected<std::unique_ptr<MemoryBuffer>> backend(Module &M, unsigned OptLevel);
+
+ /// Run optimization pipeline.
+ void opt(TargetMachine *TM, TargetLibraryInfoImpl *TLII, Module &M,
+ unsigned OptLevel);
+
+ /// Run code generation.
+ void codegen(TargetMachine *TM, TargetLibraryInfoImpl *TLII, Module &M,
+ raw_pwrite_stream &OS);
+
+ LLVMContext Context;
+ const Triple TT;
+ const std::string CPU;
+};
+
+void JITEngine::opt(TargetMachine *TM, TargetLibraryInfoImpl *TLII, Module &M,
+ unsigned OptLevel) {
+ PipelineTuningOptions PTO;
+ std::optional<PGOOptions> PGOOpt;
+
+ LoopAnalysisManager LAM;
+ FunctionAnalysisManager FAM;
+ CGSCCAnalysisManager CGAM;
+ ModuleAnalysisManager MAM;
+ ModulePassManager MPM;
+
+ PassBuilder PB(TM, PTO, PGOOpt, nullptr);
+
+ FAM.registerPass([&] { return TargetLibraryAnalysis(*TLII); });
+
+ // Register all the basic analyses with the managers.
+ PB.registerModuleAnalyses(MAM);
+ PB.registerCGSCCAnalyses(CGAM);
+ PB.registerFunctionAnalyses(FAM);
+ PB.registerLoopAnalyses(LAM);
+ PB.crossRegisterProxies(LAM, FAM, CGAM, MAM);
+
+ MPM.addPass(PB.buildPerModuleDefaultPipeline(getOptLevel(OptLevel)));
+
+ MPM.run(M, MAM);
+}
+
+void JITEngine::codegen(TargetMachine *TM, TargetLibraryInfoImpl *TLII,
+ Module &M, raw_pwrite_stream &OS) {
+ legacy::PassManager PM;
+ PM.add(new TargetLibraryInfoWrapperPass(*TLII));
+ MachineModuleInfoWrapperPass *MMIWP = new MachineModuleInfoWrapperPass(
+ reinterpret_cast<LLVMTargetMachine *>(TM));
+ TM->addPassesToEmitFile(PM, OS, nullptr,
+ TT.isNVPTX() ? CGFT_AssemblyFile : CGFT_ObjectFile,
+ /* DisableVerify */ false, MMIWP);
+
+ PM.run(M);
+}
+
+Expected<std::unique_ptr<MemoryBuffer>> JITEngine::backend(Module &M,
+ unsigned OptLevel) {
+
+ auto RemarksFileOrErr = setupLLVMOptimizationRemarks(
+ Context, /* RemarksFilename */ "", /* RemarksPasses */ "",
+ /* RemarksFormat */ "", /* RemarksWithHotness */ false);
+ if (Error E = RemarksFileOrErr.takeError())
+ return std::move(E);
+ if (*RemarksFileOrErr)
+ (*RemarksFileOrErr)->keep();
+
+ auto TMOrErr = createTargetMachine(M, CPU, OptLevel);
+ if (!TMOrErr)
+ return TMOrErr.takeError();
+
+ std::unique_ptr<TargetMachine> TM = std::move(*TMOrErr);
+ TargetLibraryInfoImpl TLII(TT);
+
+ opt(TM.get(), &TLII, M, OptLevel);
+
+ // Prepare the output buffer and stream for codegen.
+ SmallVector<char> CGOutputBuffer;
+ raw_svector_ostream OS(CGOutputBuffer);
+
+ codegen(TM.get(), &TLII, M, OS);
+
+ return MemoryBuffer::getMemBufferCopy(OS.str());
+}
+
+Expected<std::unique_ptr<MemoryBuffer>>
+JITEngine::run(__tgt_device_image *Image, unsigned OptLevel,
+ jit::PostProcessingFn PostProcessing) {
+ auto ModOrErr = createModuleFromImage(Image, Context);
+ if (!ModOrErr)
+ return ModOrErr.takeError();
+
+ auto Mod = std::move(*ModOrErr);
+
+ auto MBOrError = backend(*Mod, OptLevel);
+ if (!MBOrError)
+ return MBOrError.takeError();
+
+ return PostProcessing(std::move(*MBOrError));
+}
+
+/// A map from a bitcode image start address to its corresponding triple. If the
+/// image is not in the map, it is not a bitcode image.
+DenseMap<void *, Triple::ArchType> BitcodeImageMap;
+
+/// Output images generated from LLVM backend.
+SmallVector<std::unique_ptr<MemoryBuffer>, 4> JITImages;
+
+/// A list of __tgt_device_image images.
+std::list<__tgt_device_image> TgtImages;
+} // namespace
+
+namespace llvm {
+namespace omp {
+namespace jit {
+bool checkBitcodeImage(__tgt_device_image *Image, Triple::ArchType TA) {
+ TimeTraceScope TimeScope("Check bitcode image");
+
+ {
+ auto Itr = BitcodeImageMap.find(Image->ImageStart);
+ if (Itr != BitcodeImageMap.end() && Itr->second == TA)
+ return true;
+ }
+
+ StringRef Data(reinterpret_cast<const char *>(Image->ImageStart),
+ reinterpret_cast<char *>(Image->ImageEnd) -
+ reinterpret_cast<char *>(Image->ImageStart));
+ std::unique_ptr<MemoryBuffer> MB = MemoryBuffer::getMemBuffer(
+ Data, /* BufferName */ "", /* RequiresNullTerminator */ false);
+ if (!MB)
+ return false;
+
+ Expected<object::IRSymtabFile> FOrErr = object::readIRSymtab(*MB);
+ if (!FOrErr) {
+ consumeError(FOrErr.takeError());
+ return false;
+ }
+
+ auto ActualTriple = FOrErr->TheReader.getTargetTriple();
+
+ if (Triple(ActualTriple).getArch() == TA) {
+ BitcodeImageMap[Image->ImageStart] = TA;
+ return true;
+ }
+
+ return false;
+}
+
+Expected<__tgt_device_image *> compile(__tgt_device_image *Image,
+ Triple::ArchType TA, std::string MCPU,
+ unsigned OptLevel,
+ PostProcessingFn PostProcessing) {
+ JITEngine J(TA, MCPU);
+
+ auto ImageMBOrErr = J.run(Image, OptLevel, PostProcessing);
+ if (!ImageMBOrErr)
+ return ImageMBOrErr.takeError();
+
+ JITImages.push_back(std::move(*ImageMBOrErr));
+ TgtImages.push_back(*Image);
+
+ auto &ImageMB = JITImages.back();
+ auto *NewImage = &TgtImages.back();
+
+ NewImage->ImageStart = (void *)ImageMB->getBufferStart();
+ NewImage->ImageEnd = (void *)ImageMB->getBufferEnd();
+
+ return NewImage;
+}
+
+} // namespace jit
+} // namespace omp
+} // namespace llvm
Index: openmp/libomptarget/plugins-nextgen/common/PluginInterface/CMakeLists.txt
===================================================================
--- openmp/libomptarget/plugins-nextgen/common/PluginInterface/CMakeLists.txt
+++ openmp/libomptarget/plugins-nextgen/common/PluginInterface/CMakeLists.txt
@@ -12,7 +12,8 @@
# NOTE: Don't try to build `PluginInterface` using `add_llvm_library` because we
# don't want to export `PluginInterface` while `add_llvm_library` requires that.
-add_library(PluginInterface OBJECT PluginInterface.cpp GlobalHandler.cpp)
+add_library(PluginInterface OBJECT
+ PluginInterface.cpp GlobalHandler.cpp JIT.cpp)
# This is required when using LLVM libraries.
llvm_update_compile_flags(PluginInterface)
@@ -20,7 +21,31 @@
if (LLVM_LINK_LLVM_DYLIB)
set(llvm_libs LLVM)
else()
- llvm_map_components_to_libnames(llvm_libs Support)
+ llvm_map_components_to_libnames(llvm_libs
+ ${LLVM_TARGETS_TO_BUILD}
+ AggressiveInstCombine
+ Analysis
+ BinaryFormat
+ BitReader
+ BitWriter
+ CodeGen
+ Core
+ Extensions
+ InstCombine
+ Instrumentation
+ IPO
+ IRReader
+ Linker
+ MC
+ Object
+ Passes
+ Remarks
+ ScalarOpts
+ Support
+ Target
+ TransformUtils
+ Vectorize
+ )
endif()
target_link_libraries(PluginInterface
Index: openmp/libomptarget/plugins-nextgen/CMakeLists.txt
===================================================================
--- openmp/libomptarget/plugins-nextgen/CMakeLists.txt
+++ openmp/libomptarget/plugins-nextgen/CMakeLists.txt
@@ -33,6 +33,9 @@
# Define macro with the ELF ID for this target.
add_definitions("-DTARGET_ELF_ID=${elf_machine_id}")
+ # Define target regiple
+ add_definitions("-DLIBOMPTARGET_NEXTGEN_GENERIC_PLUGIN_TRIPLE=${tmachine}")
+
add_llvm_library("omptarget.rtl.${tmachine_libname}.nextgen"
SHARED
Index: openmp/libomptarget/CMakeLists.txt
===================================================================
--- openmp/libomptarget/CMakeLists.txt
+++ openmp/libomptarget/CMakeLists.txt
@@ -50,6 +50,7 @@
set (LIBOMPTARGET_ALL_TARGETS "${LIBOMPTARGET_ALL_TARGETS} x86_64-pc-linux-gnu-LTO")
set (LIBOMPTARGET_ALL_TARGETS "${LIBOMPTARGET_ALL_TARGETS} nvptx64-nvidia-cuda")
set (LIBOMPTARGET_ALL_TARGETS "${LIBOMPTARGET_ALL_TARGETS} nvptx64-nvidia-cuda-LTO")
+set (LIBOMPTARGET_ALL_TARGETS "${LIBOMPTARGET_ALL_TARGETS} nvptx64-nvidia-cuda-JIT-LTO")
# Once the plugins for the different targets are validated, they will be added to
# the list of supported targets in the current system.
@@ -73,7 +74,7 @@
# Follow host OMPT support and check if host support has been requested.
# LIBOMP_HAVE_OMPT_SUPPORT indicates whether host OMPT support has been implemented.
# LIBOMP_OMPT_SUPPORT indicates whether host OMPT support has been requested (default is ON).
-# LIBOMPTARGET_OMPT_SUPPORT indicates whether target OMPT support has been requested (default is ON).
+# LIBOMPTARGET_OMPT_SUPPORT indicates whether target OMPT support has been requested (default is ON).
set(OMPT_TARGET_DEFAULT FALSE)
if ((LIBOMP_HAVE_OMPT_SUPPORT) AND (LIBOMP_OMPT_SUPPORT) AND (NOT WIN32))
set (OMPT_TARGET_DEFAULT TRUE)
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