[llvm] r367756 - Speculative Compilation
Eric Christopher via llvm-commits
llvm-commits at lists.llvm.org
Tue Aug 13 10:48:39 PDT 2019
No worries, it happens :)
-eric
On Tue, Aug 13, 2019 at 10:35 AM Praveen Velliengiri
<praveenvelliengiri at gmail.com> wrote:
>
> Hi Eric,
> Sorry for causing the warning :(
>
> On Tue, 13 Aug 2019 at 06:46, Eric Christopher <echristo at gmail.com> wrote:
>>
>> FWIW you had a static function in the .h file that isn't used in every
>> single TU. I fixed it up thusly:
>>
>> commit 4acb4ee767d0f450f6b87a68e6c9e483ee0744b6
>> Author: Eric Christopher <echristo at gmail.com>
>> Date: Tue Aug 13 00:05:01 2019 +0000
>>
>> Move findBBwithCalls to the file it's used in to avoid unused function
>> warnings.
>>
>> llvm-svn: 368636
>>
>> And I'm surprised that more bots weren't broken. Do try to build with
>> warnings and errors on by default if you can.
>>
>> Thanks!
>>
>> -eric
>>
>> On Sat, Aug 3, 2019 at 7:41 AM Praveen Velliengiri via llvm-commits
>> <llvm-commits at lists.llvm.org> wrote:
>> >
>> > Author: pree-jackie
>> > Date: Sat Aug 3 07:42:13 2019
>> > New Revision: 367756
>> >
>> > URL: http://llvm.org/viewvc/llvm-project?rev=367756&view=rev
>> > Log:
>> > Speculative Compilation
>> >
>> > [ORC] Remove Speculator Variants for Different Program Representations
>> >
>> > [ORC] Block Freq Analysis
>> >
>> > Speculative Compilation with Naive Block Frequency
>> >
>> > Add Applications to OrcSpeculation
>> >
>> > ORC v2 with Block Freq Query & Example
>> >
>> > Deleted BenchMark Programs
>> >
>> > Signed-off-by: preejackie <praveenvelliengiri at gmail.com>
>> >
>> > ORCv2 comments resolved
>> >
>> > [ORCV2] NFC
>> >
>> > ORCv2 NFC
>> >
>> > [ORCv2] Speculative compilation - CFGWalkQuery
>> >
>> > ORCv2 Adapting IRSpeculationLayer to new locking scheme
>> >
>> > Added:
>> > llvm/trunk/examples/SpeculativeJIT/
>> > llvm/trunk/examples/SpeculativeJIT/CMakeLists.txt
>> > llvm/trunk/examples/SpeculativeJIT/SpeculativeJIT.cpp
>> > llvm/trunk/include/llvm/ExecutionEngine/Orc/SpeculateAnalyses.h
>> > llvm/trunk/include/llvm/ExecutionEngine/Orc/Speculation.h
>> > llvm/trunk/lib/ExecutionEngine/Orc/SpeculateAnalyses.cpp
>> > llvm/trunk/lib/ExecutionEngine/Orc/Speculation.cpp
>> > Modified:
>> > llvm/trunk/examples/CMakeLists.txt
>> > llvm/trunk/include/llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h
>> > llvm/trunk/include/llvm/ExecutionEngine/Orc/LazyReexports.h
>> > llvm/trunk/lib/ExecutionEngine/Orc/CMakeLists.txt
>> > llvm/trunk/lib/ExecutionEngine/Orc/CompileOnDemandLayer.cpp
>> > llvm/trunk/lib/ExecutionEngine/Orc/LazyReexports.cpp
>> >
>> > Modified: llvm/trunk/examples/CMakeLists.txt
>> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/examples/CMakeLists.txt?rev=367756&r1=367755&r2=367756&view=diff
>> > ==============================================================================
>> > --- llvm/trunk/examples/CMakeLists.txt (original)
>> > +++ llvm/trunk/examples/CMakeLists.txt Sat Aug 3 07:42:13 2019
>> > @@ -5,6 +5,7 @@ add_subdirectory(HowToUseLLJIT)
>> > add_subdirectory(LLJITExamples)
>> > add_subdirectory(Kaleidoscope)
>> > add_subdirectory(ModuleMaker)
>> > +add_subdirectory(SpeculativeJIT)
>> >
>> > if(LLVM_ENABLE_EH AND (NOT WIN32) AND (NOT "${LLVM_NATIVE_ARCH}" STREQUAL "ARM"))
>> > add_subdirectory(ExceptionDemo)
>> >
>> > Added: llvm/trunk/examples/SpeculativeJIT/CMakeLists.txt
>> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/examples/SpeculativeJIT/CMakeLists.txt?rev=367756&view=auto
>> > ==============================================================================
>> > --- llvm/trunk/examples/SpeculativeJIT/CMakeLists.txt (added)
>> > +++ llvm/trunk/examples/SpeculativeJIT/CMakeLists.txt Sat Aug 3 07:42:13 2019
>> > @@ -0,0 +1,14 @@
>> > +set(LLVM_LINK_COMPONENTS
>> > + Core
>> > + IRReader
>> > + OrcJIT
>> > + ExecutionEngine
>> > + Support
>> > + nativecodegen
>> > + Analysis
>> > + Passes
>> > + )
>> > +
>> > +add_llvm_example(SpeculativeJIT
>> > + SpeculativeJIT.cpp
>> > + )
>> >
>> > Added: llvm/trunk/examples/SpeculativeJIT/SpeculativeJIT.cpp
>> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/examples/SpeculativeJIT/SpeculativeJIT.cpp?rev=367756&view=auto
>> > ==============================================================================
>> > --- llvm/trunk/examples/SpeculativeJIT/SpeculativeJIT.cpp (added)
>> > +++ llvm/trunk/examples/SpeculativeJIT/SpeculativeJIT.cpp Sat Aug 3 07:42:13 2019
>> > @@ -0,0 +1,197 @@
>> > +#include "llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h"
>> > +#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
>> > +#include "llvm/ExecutionEngine/Orc/Core.h"
>> > +#include "llvm/ExecutionEngine/Orc/ExecutionUtils.h"
>> > +#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
>> > +#include "llvm/ExecutionEngine/Orc/IndirectionUtils.h"
>> > +#include "llvm/ExecutionEngine/Orc/JITTargetMachineBuilder.h"
>> > +#include "llvm/ExecutionEngine/Orc/RTDyldObjectLinkingLayer.h"
>> > +#include "llvm/ExecutionEngine/Orc/SpeculateAnalyses.h"
>> > +#include "llvm/ExecutionEngine/Orc/Speculation.h"
>> > +#include "llvm/ExecutionEngine/SectionMemoryManager.h"
>> > +#include "llvm/IRReader/IRReader.h"
>> > +#include "llvm/Support/CommandLine.h"
>> > +#include "llvm/Support/Debug.h"
>> > +#include "llvm/Support/InitLLVM.h"
>> > +#include "llvm/Support/SourceMgr.h"
>> > +#include "llvm/Support/TargetSelect.h"
>> > +#include "llvm/Support/ThreadPool.h"
>> > +
>> > +#include <list>
>> > +#include <string>
>> > +
>> > +using namespace llvm;
>> > +using namespace llvm::orc;
>> > +
>> > +static cl::list<std::string> InputFiles(cl::Positional, cl::OneOrMore,
>> > + cl::desc("input files"));
>> > +
>> > +static cl::list<std::string> InputArgv("args", cl::Positional,
>> > + cl::desc("<program arguments>..."),
>> > + cl::ZeroOrMore, cl::PositionalEatsArgs);
>> > +
>> > +static cl::opt<unsigned> NumThreads("num-threads", cl::Optional,
>> > + cl::desc("Number of compile threads"),
>> > + cl::init(4));
>> > +
>> > +ExitOnError ExitOnErr;
>> > +
>> > +// Add Layers
>> > +class SpeculativeJIT {
>> > +public:
>> > + static Expected<std::unique_ptr<SpeculativeJIT>> Create() {
>> > + auto JTMB = orc::JITTargetMachineBuilder::detectHost();
>> > + if (!JTMB)
>> > + return JTMB.takeError();
>> > +
>> > + auto DL = JTMB->getDefaultDataLayoutForTarget();
>> > + if (!DL)
>> > + return DL.takeError();
>> > +
>> > + auto ES = llvm::make_unique<ExecutionSession>();
>> > +
>> > + auto LCTMgr = createLocalLazyCallThroughManager(
>> > + JTMB->getTargetTriple(), *ES,
>> > + pointerToJITTargetAddress(explodeOnLazyCompileFailure));
>> > + if (!LCTMgr)
>> > + return LCTMgr.takeError();
>> > +
>> > + auto ISMBuilder =
>> > + createLocalIndirectStubsManagerBuilder(JTMB->getTargetTriple());
>> > + if (!ISMBuilder)
>> > + return make_error<StringError>("No indirect stubs manager for target",
>> > + inconvertibleErrorCode());
>> > +
>> > + auto ProcessSymbolsSearchGenerator =
>> > + DynamicLibrarySearchGenerator::GetForCurrentProcess(
>> > + DL->getGlobalPrefix());
>> > + if (!ProcessSymbolsSearchGenerator)
>> > + return ProcessSymbolsSearchGenerator.takeError();
>> > +
>> > + std::unique_ptr<SpeculativeJIT> SJ(new SpeculativeJIT(
>> > + std::move(ES), std::move(*DL), std::move(*JTMB), std::move(*LCTMgr),
>> > + std::move(ISMBuilder), std::move(*ProcessSymbolsSearchGenerator)));
>> > + return std::move(SJ);
>> > + }
>> > +
>> > + ExecutionSession &getES() { return *ES; }
>> > +
>> > + Error addModule(JITDylib &JD, ThreadSafeModule TSM) {
>> > + return CODLayer.add(JD, std::move(TSM));
>> > + }
>> > +
>> > + Expected<JITEvaluatedSymbol> lookup(StringRef UnmangledName) {
>> > + return ES->lookup({&ES->getMainJITDylib()}, Mangle(UnmangledName));
>> > + }
>> > +
>> > + ~SpeculativeJIT() { CompileThreads.wait(); }
>> > +
>> > +private:
>> > + using IndirectStubsManagerBuilderFunction =
>> > + std::function<std::unique_ptr<IndirectStubsManager>()>;
>> > +
>> > + static void explodeOnLazyCompileFailure() {
>> > + errs() << "Lazy compilation failed, Symbol Implmentation not found!\n";
>> > + exit(1);
>> > + }
>> > +
>> > + SpeculativeJIT(std::unique_ptr<ExecutionSession> ES, DataLayout DL,
>> > + orc::JITTargetMachineBuilder JTMB,
>> > + std::unique_ptr<LazyCallThroughManager> LCTMgr,
>> > + IndirectStubsManagerBuilderFunction ISMBuilder,
>> > + DynamicLibrarySearchGenerator ProcessSymbolsGenerator)
>> > + : ES(std::move(ES)), DL(std::move(DL)), LCTMgr(std::move(LCTMgr)),
>> > + CompileLayer(*this->ES, ObjLayer,
>> > + ConcurrentIRCompiler(std::move(JTMB))),
>> > + S(Imps, *this->ES),
>> > + SpeculateLayer(*this->ES, CompileLayer, S, BlockFreqQuery()),
>> > + CODLayer(*this->ES, SpeculateLayer, *this->LCTMgr,
>> > + std::move(ISMBuilder)) {
>> > + this->ES->getMainJITDylib().setGenerator(
>> > + std::move(ProcessSymbolsGenerator));
>> > + this->CODLayer.setImplMap(&Imps);
>> > + this->ES->setDispatchMaterialization(
>> > +
>> > + [this](JITDylib &JD, std::unique_ptr<MaterializationUnit> MU) {
>> > + // FIXME: Switch to move capture once we have c 14.
>> > + auto SharedMU = std::shared_ptr<MaterializationUnit>(std::move(MU));
>> > + auto Work = [SharedMU, &JD]() { SharedMU->doMaterialize(JD); };
>> > + CompileThreads.async(std::move(Work));
>> > + });
>> > + JITEvaluatedSymbol SpeculatorSymbol(JITTargetAddress(&S),
>> > + JITSymbolFlags::Exported);
>> > + ExitOnErr(this->ES->getMainJITDylib().define(
>> > + absoluteSymbols({{Mangle("__orc_speculator"), SpeculatorSymbol}})));
>> > + LocalCXXRuntimeOverrides CXXRuntimeoverrides;
>> > + ExitOnErr(CXXRuntimeoverrides.enable(this->ES->getMainJITDylib(), Mangle));
>> > + }
>> > +
>> > + static std::unique_ptr<SectionMemoryManager> createMemMgr() {
>> > + return llvm::make_unique<SectionMemoryManager>();
>> > + }
>> > +
>> > + std::unique_ptr<ExecutionSession> ES;
>> > + DataLayout DL;
>> > + MangleAndInterner Mangle{*ES, DL};
>> > + ThreadPool CompileThreads{NumThreads};
>> > +
>> > + Triple TT;
>> > + std::unique_ptr<LazyCallThroughManager> LCTMgr;
>> > + IRCompileLayer CompileLayer;
>> > + ImplSymbolMap Imps;
>> > + Speculator S;
>> > + RTDyldObjectLinkingLayer ObjLayer{*ES, createMemMgr};
>> > + IRSpeculationLayer SpeculateLayer;
>> > + CompileOnDemandLayer CODLayer;
>> > +};
>> > +
>> > +int main(int argc, char *argv[]) {
>> > + // Initialize LLVM.
>> > + InitLLVM X(argc, argv);
>> > +
>> > + InitializeNativeTarget();
>> > + InitializeNativeTargetAsmPrinter();
>> > +
>> > + cl::ParseCommandLineOptions(argc, argv, "SpeculativeJIT");
>> > + ExitOnErr.setBanner(std::string(argv[0]) + ": ");
>> > +
>> > + if (NumThreads < 1) {
>> > + errs() << "Speculative compilation requires one or more dedicated compile "
>> > + "threads\n";
>> > + return 1;
>> > + }
>> > +
>> > + // Create a JIT instance.
>> > + auto SJ = ExitOnErr(SpeculativeJIT::Create());
>> > +
>> > + // Load the IR inputs.
>> > + for (const auto &InputFile : InputFiles) {
>> > + SMDiagnostic Err;
>> > + auto Ctx = llvm::make_unique<LLVMContext>();
>> > + auto M = parseIRFile(InputFile, Err, *Ctx);
>> > + if (!M) {
>> > + Err.print(argv[0], errs());
>> > + return 1;
>> > + }
>> > +
>> > + ExitOnErr(SJ->addModule(SJ->getES().getMainJITDylib(),
>> > + ThreadSafeModule(std::move(M), std::move(Ctx))));
>> > + }
>> > +
>> > + // Build an argv array for the JIT'd main.
>> > + std::vector<const char *> ArgV;
>> > + ArgV.push_back(argv[0]);
>> > + for (const auto &InputArg : InputArgv)
>> > + ArgV.push_back(InputArg.data());
>> > + ArgV.push_back(nullptr);
>> > +
>> > + // Look up the JIT'd main, cast it to a function pointer, then call it.
>> > +
>> > + auto MainSym = ExitOnErr(SJ->lookup("main"));
>> > + int (*Main)(int, const char *[]) =
>> > + (int (*)(int, const char *[]))MainSym.getAddress();
>> > +
>> > + Main(ArgV.size() - 1, ArgV.data());
>> > +
>> > + return 0;
>> > +}
>> >
>> > Modified: llvm/trunk/include/llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h
>> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h?rev=367756&r1=367755&r2=367756&view=diff
>> > ==============================================================================
>> > --- llvm/trunk/include/llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h (original)
>> > +++ llvm/trunk/include/llvm/ExecutionEngine/Orc/CompileOnDemandLayer.h Sat Aug 3 07:42:13 2019
>> > @@ -26,6 +26,7 @@
>> > #include "llvm/ExecutionEngine/Orc/LazyReexports.h"
>> > #include "llvm/ExecutionEngine/Orc/Legacy.h"
>> > #include "llvm/ExecutionEngine/Orc/OrcError.h"
>> > +#include "llvm/ExecutionEngine/Orc/Speculation.h"
>> > #include "llvm/ExecutionEngine/RuntimeDyld.h"
>> > #include "llvm/IR/Attributes.h"
>> > #include "llvm/IR/Constant.h"
>> > @@ -91,6 +92,8 @@ public:
>> > /// Sets the partition function.
>> > void setPartitionFunction(PartitionFunction Partition);
>> >
>> > + /// Sets the ImplSymbolMap
>> > + void setImplMap(ImplSymbolMap *Imp);
>> > /// Emits the given module. This should not be called by clients: it will be
>> > /// called by the JIT when a definition added via the add method is requested.
>> > void emit(MaterializationResponsibility R, ThreadSafeModule TSM) override;
>> > @@ -128,6 +131,7 @@ private:
>> > PerDylibResourcesMap DylibResources;
>> > PartitionFunction Partition = compileRequested;
>> > SymbolLinkagePromoter PromoteSymbols;
>> > + ImplSymbolMap *AliaseeImpls = nullptr;
>> > };
>> >
>> > /// Compile-on-demand layer.
>> >
>> > Modified: llvm/trunk/include/llvm/ExecutionEngine/Orc/LazyReexports.h
>> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ExecutionEngine/Orc/LazyReexports.h?rev=367756&r1=367755&r2=367756&view=diff
>> > ==============================================================================
>> > --- llvm/trunk/include/llvm/ExecutionEngine/Orc/LazyReexports.h (original)
>> > +++ llvm/trunk/include/llvm/ExecutionEngine/Orc/LazyReexports.h Sat Aug 3 07:42:13 2019
>> > @@ -18,6 +18,7 @@
>> >
>> > #include "llvm/ExecutionEngine/Orc/Core.h"
>> > #include "llvm/ExecutionEngine/Orc/IndirectionUtils.h"
>> > +#include "llvm/ExecutionEngine/Orc/Speculation.h"
>> >
>> > namespace llvm {
>> >
>> > @@ -159,7 +160,7 @@ public:
>> > IndirectStubsManager &ISManager,
>> > JITDylib &SourceJD,
>> > SymbolAliasMap CallableAliases,
>> > - VModuleKey K);
>> > + ImplSymbolMap *SrcJDLoc, VModuleKey K);
>> >
>> > StringRef getName() const override;
>> >
>> > @@ -174,6 +175,7 @@ private:
>> > SymbolAliasMap CallableAliases;
>> > std::shared_ptr<LazyCallThroughManager::NotifyResolvedFunction>
>> > NotifyResolved;
>> > + ImplSymbolMap *AliaseeTable;
>> > };
>> >
>> > /// Define lazy-reexports based on the given SymbolAliasMap. Each lazy re-export
>> > @@ -182,9 +184,10 @@ private:
>> > inline std::unique_ptr<LazyReexportsMaterializationUnit>
>> > lazyReexports(LazyCallThroughManager &LCTManager,
>> > IndirectStubsManager &ISManager, JITDylib &SourceJD,
>> > - SymbolAliasMap CallableAliases, VModuleKey K = VModuleKey()) {
>> > + SymbolAliasMap CallableAliases, ImplSymbolMap *SrcJDLoc = nullptr,
>> > + VModuleKey K = VModuleKey()) {
>> > return llvm::make_unique<LazyReexportsMaterializationUnit>(
>> > - LCTManager, ISManager, SourceJD, std::move(CallableAliases),
>> > + LCTManager, ISManager, SourceJD, std::move(CallableAliases), SrcJDLoc,
>> > std::move(K));
>> > }
>> >
>> >
>> > Added: llvm/trunk/include/llvm/ExecutionEngine/Orc/SpeculateAnalyses.h
>> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ExecutionEngine/Orc/SpeculateAnalyses.h?rev=367756&view=auto
>> > ==============================================================================
>> > --- llvm/trunk/include/llvm/ExecutionEngine/Orc/SpeculateAnalyses.h (added)
>> > +++ llvm/trunk/include/llvm/ExecutionEngine/Orc/SpeculateAnalyses.h Sat Aug 3 07:42:13 2019
>> > @@ -0,0 +1,72 @@
>> > +//===-- SpeculateAnalyses.h --*- C++ -*-===//
>> > +//
>> > +// 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
>> > +//
>> > +//===----------------------------------------------------------------------===//
>> > +// \file
>> > +/// Contains the Analyses and Result Interpretation to select likely functions
>> > +/// to Speculatively compile before they are called. [Experimentation]
>> > +//===----------------------------------------------------------------------===//
>> > +
>> > +#ifndef LLVM_EXECUTIONENGINE_ORC_SPECULATEANALYSES_H
>> > +#define LLVM_EXECUTIONENGINE_ORC_SPECULATEANALYSES_H
>> > +
>> > +#include "llvm/ExecutionEngine/Orc/Core.h"
>> > +#include "llvm/ExecutionEngine/Orc/Speculation.h"
>> > +
>> > +#include <vector>
>> > +
>> > +namespace {
>> > +using namespace llvm;
>> > +std::vector<const BasicBlock *> findBBwithCalls(const Function &F,
>> > + bool IndirectCall = false) {
>> > + std::vector<const BasicBlock *> BBs;
>> > +
>> > + auto findCallInst = [&IndirectCall](const Instruction &I) {
>> > + if (auto Call = dyn_cast<CallBase>(&I)) {
>> > + if (Call->isIndirectCall())
>> > + return IndirectCall;
>> > + else
>> > + return true;
>> > + } else
>> > + return false;
>> > + };
>> > + for (auto &BB : F)
>> > + if (findCallInst(*BB.getTerminator()) ||
>> > + llvm::any_of(BB.instructionsWithoutDebug(), findCallInst))
>> > + BBs.emplace_back(&BB);
>> > +
>> > + return BBs;
>> > +}
>> > +} // namespace
>> > +
>> > +namespace llvm {
>> > +
>> > +namespace orc {
>> > +
>> > +// Direct calls in high frequency basic blocks are extracted.
>> > +class BlockFreqQuery {
>> > +private:
>> > + void findCalles(const BasicBlock *, DenseSet<StringRef> &);
>> > + size_t numBBToGet(size_t);
>> > +
>> > +public:
>> > + using ResultTy = Optional<DenseMap<StringRef, DenseSet<StringRef>>>;
>> > +
>> > + // Find likely next executables based on IR Block Frequency
>> > + ResultTy operator()(Function &F, FunctionAnalysisManager &FAM);
>> > +};
>> > +
>> > +// Walk the CFG by exploting BranchProbabilityInfo
>> > +class CFGWalkQuery {
>> > +public:
>> > + using ResultTy = Optional<DenseMap<StringRef, DenseSet<StringRef>>>;
>> > + ResultTy operator()(Function &F, FunctionAnalysisManager &FAM);
>> > +};
>> > +
>> > +} // namespace orc
>> > +} // namespace llvm
>> > +
>> > +#endif // LLVM_EXECUTIONENGINE_ORC_SPECULATEANALYSES_H
>> >
>> > Added: llvm/trunk/include/llvm/ExecutionEngine/Orc/Speculation.h
>> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/ExecutionEngine/Orc/Speculation.h?rev=367756&view=auto
>> > ==============================================================================
>> > --- llvm/trunk/include/llvm/ExecutionEngine/Orc/Speculation.h (added)
>> > +++ llvm/trunk/include/llvm/ExecutionEngine/Orc/Speculation.h Sat Aug 3 07:42:13 2019
>> > @@ -0,0 +1,208 @@
>> > +//===-- Speculation.h - Speculative Compilation --*- C++ -*-===//
>> > +//
>> > +// 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
>> > +//
>> > +//===----------------------------------------------------------------------===//
>> > +//
>> > +// Contains the definition to support speculative compilation when laziness is
>> > +// enabled.
>> > +//===----------------------------------------------------------------------===//
>> > +
>> > +#ifndef LLVM_EXECUTIONENGINE_ORC_SPECULATION_H
>> > +#define LLVM_EXECUTIONENGINE_ORC_SPECULATION_H
>> > +
>> > +#include "llvm/ADT/ArrayRef.h"
>> > +#include "llvm/ADT/DenseMap.h"
>> > +#include "llvm/ADT/Optional.h"
>> > +#include "llvm/ExecutionEngine/Orc/Core.h"
>> > +#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
>> > +#include "llvm/IR/PassManager.h"
>> > +#include "llvm/Passes/PassBuilder.h"
>> > +
>> > +#include <mutex>
>> > +#include <type_traits>
>> > +#include <utility>
>> > +#include <vector>
>> > +
>> > +namespace llvm {
>> > +namespace orc {
>> > +
>> > +class Speculator;
>> > +
>> > +// Track the Impls (JITDylib,Symbols) of Symbols while lazy call through
>> > +// trampolines are created. Operations are guarded by locks tp ensure that Imap
>> > +// stays in consistent state after read/write
>> > +
>> > +class ImplSymbolMap {
>> > + friend class Speculator;
>> > +
>> > +public:
>> > + using AliaseeDetails = std::pair<SymbolStringPtr, JITDylib *>;
>> > + using Alias = SymbolStringPtr;
>> > + using ImapTy = DenseMap<Alias, AliaseeDetails>;
>> > + void trackImpls(SymbolAliasMap ImplMaps, JITDylib *SrcJD);
>> > +
>> > +private:
>> > + // FIX ME: find a right way to distinguish the pre-compile Symbols, and update
>> > + // the callsite
>> > + Optional<AliaseeDetails> getImplFor(const SymbolStringPtr &StubSymbol) {
>> > + std::lock_guard<std::mutex> Lockit(ConcurrentAccess);
>> > + auto Position = Maps.find(StubSymbol);
>> > + if (Position != Maps.end())
>> > + return Position->getSecond();
>> > + else
>> > + return None;
>> > + }
>> > +
>> > + std::mutex ConcurrentAccess;
>> > + ImapTy Maps;
>> > +};
>> > +
>> > +// Defines Speculator Concept,
>> > +class Speculator {
>> > +public:
>> > + using TargetFAddr = JITTargetAddress;
>> > + using FunctionCandidatesMap = DenseMap<SymbolStringPtr, SymbolNameSet>;
>> > + using StubAddrLikelies = DenseMap<TargetFAddr, SymbolNameSet>;
>> > +
>> > +private:
>> > + void registerSymbolsWithAddr(TargetFAddr ImplAddr,
>> > + SymbolNameSet likelySymbols) {
>> > + std::lock_guard<std::mutex> Lockit(ConcurrentAccess);
>> > + GlobalSpecMap.insert({ImplAddr, std::move(likelySymbols)});
>> > + }
>> > +
>> > + void launchCompile(JITTargetAddress FAddr) {
>> > + SymbolNameSet CandidateSet;
>> > + // Copy CandidateSet is necessary, to avoid unsynchronized access to
>> > + // the datastructure.
>> > + {
>> > + std::lock_guard<std::mutex> Lockit(ConcurrentAccess);
>> > + auto It = GlobalSpecMap.find(FAddr);
>> > + // Kill this when jump on first call instrumentation is in place;
>> > + auto Iv = AlreadyExecuted.insert(FAddr);
>> > + if (It == GlobalSpecMap.end() || Iv.second == false)
>> > + return;
>> > + else
>> > + CandidateSet = It->getSecond();
>> > + }
>> > +
>> > + // Try to distinguish pre-compiled symbols!
>> > + for (auto &Callee : CandidateSet) {
>> > + auto ImplSymbol = AliaseeImplTable.getImplFor(Callee);
>> > + if (!ImplSymbol.hasValue())
>> > + continue;
>> > + const auto &ImplSymbolName = ImplSymbol.getPointer()->first;
>> > + auto *ImplJD = ImplSymbol.getPointer()->second;
>> > + ES.lookup(JITDylibSearchList({{ImplJD, true}}),
>> > + SymbolNameSet({ImplSymbolName}), SymbolState::Ready,
>> > + [this](Expected<SymbolMap> Result) {
>> > + if (auto Err = Result.takeError())
>> > + ES.reportError(std::move(Err));
>> > + },
>> > + NoDependenciesToRegister);
>> > + }
>> > + }
>> > +
>> > +public:
>> > + Speculator(ImplSymbolMap &Impl, ExecutionSession &ref)
>> > + : AliaseeImplTable(Impl), ES(ref), GlobalSpecMap(0) {}
>> > + Speculator(const Speculator &) = delete;
>> > + Speculator(Speculator &&) = delete;
>> > + Speculator &operator=(const Speculator &) = delete;
>> > + Speculator &operator=(Speculator &&) = delete;
>> > + ~Speculator() {}
>> > +
>> > + // Speculatively compile likely functions for the given Stub Address.
>> > + // destination of __orc_speculate_for jump
>> > + void speculateFor(TargetFAddr StubAddr) { launchCompile(StubAddr); }
>> > +
>> > + // FIXME : Register with Stub Address, after JITLink Fix.
>> > + void registerSymbols(FunctionCandidatesMap Candidates, JITDylib *JD) {
>> > + for (auto &SymPair : Candidates) {
>> > + auto Target = SymPair.first;
>> > + auto Likely = SymPair.second;
>> > +
>> > + auto OnReadyFixUp = [Likely, Target,
>> > + this](Expected<SymbolMap> ReadySymbol) {
>> > + if (ReadySymbol) {
>> > + auto RAddr = (*ReadySymbol)[Target].getAddress();
>> > + registerSymbolsWithAddr(RAddr, std::move(Likely));
>> > + } else
>> > + this->getES().reportError(ReadySymbol.takeError());
>> > + };
>> > + // Include non-exported symbols also.
>> > + ES.lookup(JITDylibSearchList({{JD, true}}), SymbolNameSet({Target}),
>> > + SymbolState::Ready, OnReadyFixUp, NoDependenciesToRegister);
>> > + }
>> > + }
>> > +
>> > + ExecutionSession &getES() { return ES; }
>> > +
>> > +private:
>> > + std::mutex ConcurrentAccess;
>> > + ImplSymbolMap &AliaseeImplTable;
>> > + ExecutionSession &ES;
>> > + DenseSet<TargetFAddr> AlreadyExecuted;
>> > + StubAddrLikelies GlobalSpecMap;
>> > +};
>> > +// replace DenseMap with Pair
>> > +class IRSpeculationLayer : public IRLayer {
>> > +public:
>> > + using IRlikiesStrRef = Optional<DenseMap<StringRef, DenseSet<StringRef>>>;
>> > + using ResultEval =
>> > + std::function<IRlikiesStrRef(Function &, FunctionAnalysisManager &)>;
>> > + using TargetAndLikelies = DenseMap<SymbolStringPtr, SymbolNameSet>;
>> > +
>> > + IRSpeculationLayer(ExecutionSession &ES, IRCompileLayer &BaseLayer,
>> > + Speculator &Spec, ResultEval Interpreter)
>> > + : IRLayer(ES), NextLayer(BaseLayer), S(Spec), QueryAnalysis(Interpreter) {
>> > + PB.registerFunctionAnalyses(FAM);
>> > + }
>> > +
>> > + template <
>> > + typename AnalysisTy,
>> > + typename std::enable_if<
>> > + std::is_base_of<AnalysisInfoMixin<AnalysisTy>, AnalysisTy>::value,
>> > + bool>::type = true>
>> > + void registerAnalysis() {
>> > + FAM.registerPass([]() { return AnalysisTy(); });
>> > + }
>> > +
>> > + void emit(MaterializationResponsibility R, ThreadSafeModule TSM);
>> > +
>> > +private:
>> > + TargetAndLikelies
>> > + internToJITSymbols(DenseMap<StringRef, DenseSet<StringRef>> IRNames) {
>> > + assert(!IRNames.empty() && "No IRNames received to Intern?");
>> > + TargetAndLikelies InternedNames;
>> > + DenseSet<SymbolStringPtr> TargetJITNames;
>> > + ExecutionSession &Es = getExecutionSession();
>> > + for (auto &NamePair : IRNames) {
>> > + for (auto &TargetNames : NamePair.second)
>> > + TargetJITNames.insert(Es.intern(TargetNames));
>> > +
>> > + InternedNames.insert(
>> > + {Es.intern(NamePair.first), std::move(TargetJITNames)});
>> > + }
>> > + return InternedNames;
>> > + }
>> > +
>> > + IRCompileLayer &NextLayer;
>> > + Speculator &S;
>> > + PassBuilder PB;
>> > + FunctionAnalysisManager FAM;
>> > + ResultEval QueryAnalysis;
>> > +};
>> > +
>> > +// Runtime Function Interface
>> > +extern "C" {
>> > +void __orc_speculate_for(Speculator *, uint64_t stub_id);
>> > +}
>> > +
>> > +} // namespace orc
>> > +} // namespace llvm
>> > +
>> > +#endif // LLVM_EXECUTIONENGINE_ORC_SPECULATION_H
>> >
>> > Modified: llvm/trunk/lib/ExecutionEngine/Orc/CMakeLists.txt
>> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/ExecutionEngine/Orc/CMakeLists.txt?rev=367756&r1=367755&r2=367756&view=diff
>> > ==============================================================================
>> > --- llvm/trunk/lib/ExecutionEngine/Orc/CMakeLists.txt (original)
>> > +++ llvm/trunk/lib/ExecutionEngine/Orc/CMakeLists.txt Sat Aug 3 07:42:13 2019
>> > @@ -21,7 +21,8 @@ add_llvm_library(LLVMOrcJIT
>> > RPCUtils.cpp
>> > RTDyldObjectLinkingLayer.cpp
>> > ThreadSafeModule.cpp
>> > -
>> > + Speculation.cpp
>> > + SpeculateAnalyses.cpp
>> > ADDITIONAL_HEADER_DIRS
>> > ${LLVM_MAIN_INCLUDE_DIR}/llvm/ExecutionEngine/Orc
>> >
>> > @@ -31,6 +32,7 @@ add_llvm_library(LLVMOrcJIT
>> >
>> > target_link_libraries(LLVMOrcJIT
>> > PRIVATE
>> > + LLVMAnalysis
>> > LLVMBitReader
>> > LLVMBitWriter
>> > )
>> >
>> > Modified: llvm/trunk/lib/ExecutionEngine/Orc/CompileOnDemandLayer.cpp
>> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/ExecutionEngine/Orc/CompileOnDemandLayer.cpp?rev=367756&r1=367755&r2=367756&view=diff
>> > ==============================================================================
>> > --- llvm/trunk/lib/ExecutionEngine/Orc/CompileOnDemandLayer.cpp (original)
>> > +++ llvm/trunk/lib/ExecutionEngine/Orc/CompileOnDemandLayer.cpp Sat Aug 3 07:42:13 2019
>> > @@ -118,6 +118,9 @@ void CompileOnDemandLayer::setPartitionF
>> > this->Partition = std::move(Partition);
>> > }
>> >
>> > +void CompileOnDemandLayer::setImplMap(ImplSymbolMap *Imp) {
>> > + this->AliaseeImpls = Imp;
>> > +}
>> > void CompileOnDemandLayer::emit(MaterializationResponsibility R,
>> > ThreadSafeModule TSM) {
>> > assert(TSM && "Null module");
>> > @@ -161,7 +164,7 @@ void CompileOnDemandLayer::emit(Material
>> >
>> > R.replace(reexports(PDR.getImplDylib(), std::move(NonCallables), true));
>> > R.replace(lazyReexports(LCTMgr, PDR.getISManager(), PDR.getImplDylib(),
>> > - std::move(Callables)));
>> > + std::move(Callables), AliaseeImpls));
>> > }
>> >
>> > CompileOnDemandLayer::PerDylibResources &
>> >
>> > Modified: llvm/trunk/lib/ExecutionEngine/Orc/LazyReexports.cpp
>> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/ExecutionEngine/Orc/LazyReexports.cpp?rev=367756&r1=367755&r2=367756&view=diff
>> > ==============================================================================
>> > --- llvm/trunk/lib/ExecutionEngine/Orc/LazyReexports.cpp (original)
>> > +++ llvm/trunk/lib/ExecutionEngine/Orc/LazyReexports.cpp Sat Aug 3 07:42:13 2019
>> > @@ -50,7 +50,6 @@ LazyCallThroughManager::callThroughToSym
>> > SourceJD = I->second.first;
>> > SymbolName = I->second.second;
>> > }
>> > -
>> > auto LookupResult =
>> > ES.lookup(JITDylibSearchList({{SourceJD, true}}), SymbolName);
>> >
>> > @@ -121,7 +120,8 @@ createLocalLazyCallThroughManager(const
>> >
>> > LazyReexportsMaterializationUnit::LazyReexportsMaterializationUnit(
>> > LazyCallThroughManager &LCTManager, IndirectStubsManager &ISManager,
>> > - JITDylib &SourceJD, SymbolAliasMap CallableAliases, VModuleKey K)
>> > + JITDylib &SourceJD, SymbolAliasMap CallableAliases, ImplSymbolMap *SrcJDLoc,
>> > + VModuleKey K)
>> > : MaterializationUnit(extractFlags(CallableAliases), std::move(K)),
>> > LCTManager(LCTManager), ISManager(ISManager), SourceJD(SourceJD),
>> > CallableAliases(std::move(CallableAliases)),
>> > @@ -129,7 +129,8 @@ LazyReexportsMaterializationUnit::LazyRe
>> > [&ISManager](JITDylib &JD, const SymbolStringPtr &SymbolName,
>> > JITTargetAddress ResolvedAddr) {
>> > return ISManager.updatePointer(*SymbolName, ResolvedAddr);
>> > - })) {}
>> > + })),
>> > + AliaseeTable(SrcJDLoc) {}
>> >
>> > StringRef LazyReexportsMaterializationUnit::getName() const {
>> > return "<Lazy Reexports>";
>> > @@ -149,7 +150,7 @@ void LazyReexportsMaterializationUnit::m
>> >
>> > if (!CallableAliases.empty())
>> > R.replace(lazyReexports(LCTManager, ISManager, SourceJD,
>> > - std::move(CallableAliases)));
>> > + std::move(CallableAliases), AliaseeTable));
>> >
>> > IndirectStubsManager::StubInitsMap StubInits;
>> > for (auto &Alias : RequestedAliases) {
>> > @@ -168,6 +169,9 @@ void LazyReexportsMaterializationUnit::m
>> > std::make_pair(*CallThroughTrampoline, Alias.second.AliasFlags);
>> > }
>> >
>> > + if (AliaseeTable != nullptr && !RequestedAliases.empty())
>> > + AliaseeTable->trackImpls(RequestedAliases, &SourceJD);
>> > +
>> > if (auto Err = ISManager.createStubs(StubInits)) {
>> > SourceJD.getExecutionSession().reportError(std::move(Err));
>> > R.failMaterialization();
>> >
>> > Added: llvm/trunk/lib/ExecutionEngine/Orc/SpeculateAnalyses.cpp
>> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/ExecutionEngine/Orc/SpeculateAnalyses.cpp?rev=367756&view=auto
>> > ==============================================================================
>> > --- llvm/trunk/lib/ExecutionEngine/Orc/SpeculateAnalyses.cpp (added)
>> > +++ llvm/trunk/lib/ExecutionEngine/Orc/SpeculateAnalyses.cpp Sat Aug 3 07:42:13 2019
>> > @@ -0,0 +1,87 @@
>> > +//===-- SpeculateAnalyses.cpp --*- C++ -*-===//
>> > +//
>> > +// 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/SpeculateAnalyses.h"
>> > +#include "llvm/ADT/DenseMap.h"
>> > +#include "llvm/ADT/STLExtras.h"
>> > +#include "llvm/ADT/SmallVector.h"
>> > +#include "llvm/Analysis/BlockFrequencyInfo.h"
>> > +
>> > +// Implementations of Queries shouldn't need to lock the resources
>> > +// such as LLVMContext, each argument (function) has a non-shared LLVMContext
>> > +namespace llvm {
>> > +namespace orc {
>> > +
>> > +// Collect direct calls only
>> > +void BlockFreqQuery::findCalles(const BasicBlock *BB,
>> > + DenseSet<StringRef> &CallesNames) {
>> > + assert(BB != nullptr && "Traversing Null BB to find calls?");
>> > +
>> > + auto getCalledFunction = [&CallesNames](const CallBase *Call) {
>> > + auto CalledValue = Call->getCalledOperand()->stripPointerCasts();
>> > + if (auto DirectCall = dyn_cast<Function>(CalledValue))
>> > + CallesNames.insert(DirectCall->getName());
>> > + };
>> > + for (auto &I : BB->instructionsWithoutDebug())
>> > + if (auto CI = dyn_cast<CallInst>(&I))
>> > + getCalledFunction(CI);
>> > +
>> > + if (auto II = dyn_cast<InvokeInst>(BB->getTerminator()))
>> > + getCalledFunction(II);
>> > +}
>> > +
>> > +// blind calculation
>> > +size_t BlockFreqQuery::numBBToGet(size_t numBB) {
>> > + // small CFG
>> > + if (numBB < 4)
>> > + return numBB;
>> > + // mid-size CFG
>> > + else if (numBB < 20)
>> > + return (numBB / 2);
>> > + else
>> > + return (numBB / 2) + (numBB / 4);
>> > +}
>> > +
>> > +BlockFreqQuery::ResultTy BlockFreqQuery::
>> > +operator()(Function &F, FunctionAnalysisManager &FAM) {
>> > + DenseMap<StringRef, DenseSet<StringRef>> CallerAndCalles;
>> > + DenseSet<StringRef> Calles;
>> > + SmallVector<std::pair<const BasicBlock *, uint64_t>, 8> BBFreqs;
>> > +
>> > + auto IBBs = findBBwithCalls(F);
>> > +
>> > + if (IBBs.empty())
>> > + return None;
>> > +
>> > + auto &BFI = FAM.getResult<BlockFrequencyAnalysis>(F);
>> > +
>> > + for (const auto I : IBBs)
>> > + BBFreqs.push_back({I, BFI.getBlockFreq(I).getFrequency()});
>> > +
>> > + assert(IBBs.size() == BBFreqs.size() && "BB Count Mismatch");
>> > +
>> > + llvm::sort(BBFreqs.begin(), BBFreqs.end(),
>> > + [](decltype(BBFreqs)::const_reference BBF,
>> > + decltype(BBFreqs)::const_reference BBS) {
>> > + return BBF.second > BBS.second ? true : false;
>> > + });
>> > +
>> > + // ignoring number of direct calls in a BB
>> > + auto Topk = numBBToGet(BBFreqs.size());
>> > +
>> > + for (size_t i = 0; i < Topk; i++)
>> > + findCalles(BBFreqs[i].first, Calles);
>> > +
>> > + assert(!Calles.empty() && "Running Analysis on Function with no calls?");
>> > +
>> > + CallerAndCalles.insert({F.getName(), std::move(Calles)});
>> > +
>> > + return CallerAndCalles;
>> > +}
>> > +} // namespace orc
>> > +} // namespace llvm
>> >
>> > Added: llvm/trunk/lib/ExecutionEngine/Orc/Speculation.cpp
>> > URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/ExecutionEngine/Orc/Speculation.cpp?rev=367756&view=auto
>> > ==============================================================================
>> > --- llvm/trunk/lib/ExecutionEngine/Orc/Speculation.cpp (added)
>> > +++ llvm/trunk/lib/ExecutionEngine/Orc/Speculation.cpp Sat Aug 3 07:42:13 2019
>> > @@ -0,0 +1,97 @@
>> > +//===---------- speculation.cpp - Utilities for Speculation ----------===//
>> > +//
>> > +// 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/Speculation.h"
>> > +
>> > +#include "llvm/IR/BasicBlock.h"
>> > +#include "llvm/IR/Function.h"
>> > +#include "llvm/IR/IRBuilder.h"
>> > +#include "llvm/IR/Instruction.h"
>> > +#include "llvm/IR/Instructions.h"
>> > +#include "llvm/IR/LLVMContext.h"
>> > +#include "llvm/IR/Module.h"
>> > +#include "llvm/IR/Type.h"
>> > +#include "llvm/IR/Verifier.h"
>> > +
>> > +#include <vector>
>> > +
>> > +namespace llvm {
>> > +
>> > +namespace orc {
>> > +
>> > +// ImplSymbolMap methods
>> > +void ImplSymbolMap::trackImpls(SymbolAliasMap ImplMaps, JITDylib *SrcJD) {
>> > + assert(SrcJD && "Tracking on Null Source .impl dylib");
>> > + std::lock_guard<std::mutex> Lockit(ConcurrentAccess);
>> > + for (auto &I : ImplMaps) {
>> > + auto It = Maps.insert({I.first, {I.second.Aliasee, SrcJD}});
>> > + // check rationale when independent dylibs have same symbol name?
>> > + assert(It.second && "ImplSymbols are already tracked for this Symbol?");
>> > + (void)(It);
>> > + }
>> > +}
>> > +
>> > +// If two modules, share the same LLVMContext, different threads must
>> > +// not access those modules concurrently, doing so leave the
>> > +// LLVMContext in in-consistent state.
>> > +// But here since each TSM has a unique Context associated with it,
>> > +// on locking is necessary!
>> > +void IRSpeculationLayer::emit(MaterializationResponsibility R,
>> > + ThreadSafeModule TSM) {
>> > +
>> > + assert(TSM && "Speculation Layer received Null Module ?");
>> > + assert(TSM.getContext().getContext() != nullptr &&
>> > + "Module with null LLVMContext?");
>> > +
>> > + // Instrumentation of runtime calls
>> > + auto &InContext = *TSM.getContext().getContext();
>> > + auto SpeculatorVTy = StructType::create(InContext, "Class.Speculator");
>> > + auto RuntimeCallTy = FunctionType::get(
>> > + Type::getVoidTy(InContext),
>> > + {SpeculatorVTy->getPointerTo(), Type::getInt64Ty(InContext)}, false);
>> > + auto RuntimeCall =
>> > + Function::Create(RuntimeCallTy, Function::LinkageTypes::ExternalLinkage,
>> > + "__orc_speculate_for", TSM.getModuleUnlocked());
>> > + auto SpeclAddr = new GlobalVariable(
>> > + *TSM.getModuleUnlocked(), SpeculatorVTy, false,
>> > + GlobalValue::LinkageTypes::ExternalLinkage, nullptr, "__orc_speculator");
>> > +
>> > + IRBuilder<> Mutator(InContext);
>> > +
>> > + // QueryAnalysis allowed to transform the IR source, one such example is
>> > + // Simplify CFG helps the static branch prediction heuristics!
>> > + for (auto &Fn : TSM.getModuleUnlocked()->getFunctionList()) {
>> > + if (!Fn.isDeclaration()) {
>> > + auto IRNames = QueryAnalysis(Fn, FAM);
>> > + // Instrument and register if Query has result
>> > + if (IRNames.hasValue()) {
>> > + Mutator.SetInsertPoint(&(Fn.getEntryBlock().front()));
>> > + auto ImplAddrToUint =
>> > + Mutator.CreatePtrToInt(&Fn, Type::getInt64Ty(InContext));
>> > + Mutator.CreateCall(RuntimeCallTy, RuntimeCall,
>> > + {SpeclAddr, ImplAddrToUint});
>> > + S.registerSymbols(internToJITSymbols(IRNames.getValue()),
>> > + &R.getTargetJITDylib());
>> > + }
>> > + }
>> > + }
>> > + // No locking needed read only operation.
>> > + assert(!(verifyModule(*TSM.getModuleUnlocked())) &&
>> > + "Speculation Instrumentation breaks IR?");
>> > +
>> > + NextLayer.emit(std::move(R), std::move(TSM));
>> > +}
>> > +
>> > +// Runtime Function Implementation
>> > +extern "C" void __orc_speculate_for(Speculator *Ptr, uint64_t StubId) {
>> > + assert(Ptr && " Null Address Received in orc_speculate_for ");
>> > + Ptr->speculateFor(StubId);
>> > +}
>> > +
>> > +} // namespace orc
>> > +} // namespace llvm
>> >
>> >
>> > _______________________________________________
>> > llvm-commits mailing list
>> > llvm-commits at lists.llvm.org
>> > https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits
More information about the llvm-commits
mailing list