//
//===----------------------------------------------------------------------===//
-#define DEBUG_TYPE "lli"
-#include "RecordingMemoryManager.h"
+#include "llvm/IR/LLVMContext.h"
+#include "OrcLazyJIT.h"
+#include "RemoteMemoryManager.h"
#include "RemoteTarget.h"
-#include "llvm/LLVMContext.h"
-#include "llvm/Module.h"
-#include "llvm/Type.h"
+#include "RemoteTargetExternal.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/CodeGen/LinkAllCodegenComponents.h"
#include "llvm/ExecutionEngine/GenericValue.h"
#include "llvm/ExecutionEngine/Interpreter.h"
-#include "llvm/ExecutionEngine/JIT.h"
#include "llvm/ExecutionEngine/JITEventListener.h"
-#include "llvm/ExecutionEngine/JITMemoryManager.h"
#include "llvm/ExecutionEngine/MCJIT.h"
+#include "llvm/ExecutionEngine/ObjectCache.h"
+#include "llvm/ExecutionEngine/OrcMCJITReplacement.h"
+#include "llvm/ExecutionEngine/SectionMemoryManager.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Type.h"
+#include "llvm/IR/TypeBuilder.h"
+#include "llvm/IRReader/IRReader.h"
+#include "llvm/Object/Archive.h"
+#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/IRReader.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/DynamicLibrary.h"
+#include "llvm/Support/Format.h"
#include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/Memory.h"
#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/Path.h"
#include "llvm/Support/PluginLoader.h"
#include "llvm/Support/PrettyStackTrace.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Support/Format.h"
#include "llvm/Support/Process.h"
+#include "llvm/Support/Program.h"
#include "llvm/Support/Signals.h"
+#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/TargetSelect.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/DynamicLibrary.h"
-#include "llvm/Support/Memory.h"
-#include "llvm/Support/MathExtras.h"
+#include "llvm/Support/raw_ostream.h"
+#include "llvm/Transforms/Instrumentation.h"
#include <cerrno>
-#ifdef __linux__
-// These includes used by LLIMCJITMemoryManager::getPointerToNamedFunction()
-// for Glibc trickery. Look comments in this function for more information.
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#include <fcntl.h>
-#include <unistd.h>
-#endif
-
#ifdef __CYGWIN__
#include <cygwin/version.h>
#if defined(CYGWIN_VERSION_DLL_MAJOR) && CYGWIN_VERSION_DLL_MAJOR<1007
using namespace llvm;
+#define DEBUG_TYPE "lli"
+
namespace {
+
+ enum class JITKind { MCJIT, OrcMCJITReplacement, OrcLazy };
+
cl::opt<std::string>
InputFile(cl::desc("<input bitcode>"), cl::Positional, cl::init("-"));
cl::desc("Force interpretation: disable JIT"),
cl::init(false));
- cl::opt<bool> UseMCJIT(
- "use-mcjit", cl::desc("Enable use of the MC-based JIT (if available)"),
- cl::init(false));
+ cl::opt<JITKind> UseJITKind("jit-kind",
+ cl::desc("Choose underlying JIT kind."),
+ cl::init(JITKind::MCJIT),
+ cl::values(
+ clEnumValN(JITKind::MCJIT, "mcjit",
+ "MCJIT"),
+ clEnumValN(JITKind::OrcMCJITReplacement,
+ "orc-mcjit",
+ "Orc-based MCJIT replacement"),
+ clEnumValN(JITKind::OrcLazy,
+ "orc-lazy",
+ "Orc-based lazy JIT."),
+ clEnumValEnd));
// The MCJIT supports building for a target address space separate from
// the JIT compilation process. Use a forked process and a copying
cl::desc("Execute MCJIT'ed code in a separate process."),
cl::init(false));
+ // Manually specify the child process for remote execution. This overrides
+ // the simulated remote execution that allocates address space for child
+ // execution. The child process will be executed and will communicate with
+ // lli via stdin/stdout pipes.
+ cl::opt<std::string>
+ ChildExecPath("mcjit-remote-process",
+ cl::desc("Specify the filename of the process to launch "
+ "for remote MCJIT execution. If none is specified,"
+ "\n\tremote execution will be simulated in-process."),
+ cl::value_desc("filename"), cl::init(""));
+
// Determine optimization level.
cl::opt<char>
OptLevel("O",
cl::value_desc("function"),
cl::init("main"));
+ cl::list<std::string>
+ ExtraModules("extra-module",
+ cl::desc("Extra modules to be loaded"),
+ cl::value_desc("input bitcode"));
+
+ cl::list<std::string>
+ ExtraObjects("extra-object",
+ cl::desc("Extra object files to be loaded"),
+ cl::value_desc("input object"));
+
+ cl::list<std::string>
+ ExtraArchives("extra-archive",
+ cl::desc("Extra archive files to be loaded"),
+ cl::value_desc("input archive"));
+
+ cl::opt<bool>
+ EnableCacheManager("enable-cache-manager",
+ cl::desc("Use cache manager to save/load mdoules"),
+ cl::init(false));
+
+ cl::opt<std::string>
+ ObjectCacheDir("object-cache-dir",
+ cl::desc("Directory to store cached object files "
+ "(must be user writable)"),
+ cl::init(""));
+
cl::opt<std::string>
FakeArgv0("fake-argv0",
cl::desc("Override the 'argv[0]' value passed into the executing"
"Large code model"),
clEnumValEnd));
- cl::opt<bool>
- EnableJITExceptionHandling("jit-enable-eh",
- cl::desc("Emit exception handling information"),
- cl::init(false));
-
cl::opt<bool>
GenerateSoftFloatCalls("soft-float",
cl::desc("Generate software floating point library calls"),
clEnumValN(FloatABI::Hard, "hard",
"Hard float ABI (uses FP registers)"),
clEnumValEnd));
- cl::opt<bool>
-// In debug builds, make this default to true.
-#ifdef NDEBUG
-#define EMIT_DEBUG false
-#else
-#define EMIT_DEBUG true
-#endif
- EmitJitDebugInfo("jit-emit-debug",
- cl::desc("Emit debug information to debugger"),
- cl::init(EMIT_DEBUG));
-#undef EMIT_DEBUG
-
- static cl::opt<bool>
- EmitJitDebugInfoToDisk("jit-emit-debug-to-disk",
- cl::Hidden,
- cl::desc("Emit debug info objfiles to disk"),
- cl::init(false));
}
-static ExecutionEngine *EE = 0;
+//===----------------------------------------------------------------------===//
+// Object cache
+//
+// This object cache implementation writes cached objects to disk to the
+// directory specified by CacheDir, using a filename provided in the module
+// descriptor. The cache tries to load a saved object using that path if the
+// file exists. CacheDir defaults to "", in which case objects are cached
+// alongside their originating bitcodes.
+//
+class LLIObjectCache : public ObjectCache {
+public:
+ LLIObjectCache(const std::string& CacheDir) : CacheDir(CacheDir) {
+ // Add trailing '/' to cache dir if necessary.
+ if (!this->CacheDir.empty() &&
+ this->CacheDir[this->CacheDir.size() - 1] != '/')
+ this->CacheDir += '/';
+ }
+ ~LLIObjectCache() override {}
+
+ void notifyObjectCompiled(const Module *M, MemoryBufferRef Obj) override {
+ const std::string ModuleID = M->getModuleIdentifier();
+ std::string CacheName;
+ if (!getCacheFilename(ModuleID, CacheName))
+ return;
+ if (!CacheDir.empty()) { // Create user-defined cache dir.
+ SmallString<128> dir(sys::path::parent_path(CacheName));
+ sys::fs::create_directories(Twine(dir));
+ }
+ std::error_code EC;
+ raw_fd_ostream outfile(CacheName, EC, sys::fs::F_None);
+ outfile.write(Obj.getBufferStart(), Obj.getBufferSize());
+ outfile.close();
+ }
+
+ std::unique_ptr<MemoryBuffer> getObject(const Module* M) override {
+ const std::string ModuleID = M->getModuleIdentifier();
+ std::string CacheName;
+ if (!getCacheFilename(ModuleID, CacheName))
+ return nullptr;
+ // Load the object from the cache filename
+ ErrorOr<std::unique_ptr<MemoryBuffer>> IRObjectBuffer =
+ MemoryBuffer::getFile(CacheName.c_str(), -1, false);
+ // If the file isn't there, that's OK.
+ if (!IRObjectBuffer)
+ return nullptr;
+ // MCJIT will want to write into this buffer, and we don't want that
+ // because the file has probably just been mmapped. Instead we make
+ // a copy. The filed-based buffer will be released when it goes
+ // out of scope.
+ return MemoryBuffer::getMemBufferCopy(IRObjectBuffer.get()->getBuffer());
+ }
+
+private:
+ std::string CacheDir;
+
+ bool getCacheFilename(const std::string &ModID, std::string &CacheName) {
+ std::string Prefix("file:");
+ size_t PrefixLength = Prefix.length();
+ if (ModID.substr(0, PrefixLength) != Prefix)
+ return false;
+ std::string CacheSubdir = ModID.substr(PrefixLength);
+#if defined(_WIN32)
+ // Transform "X:\foo" => "/X\foo" for convenience.
+ if (isalpha(CacheSubdir[0]) && CacheSubdir[1] == ':') {
+ CacheSubdir[1] = CacheSubdir[0];
+ CacheSubdir[0] = '/';
+ }
+#endif
+ CacheName = CacheDir + CacheSubdir;
+ size_t pos = CacheName.rfind('.');
+ CacheName.replace(pos, CacheName.length() - pos, ".o");
+ return true;
+ }
+};
+
+static ExecutionEngine *EE = nullptr;
+static LLIObjectCache *CacheManager = nullptr;
static void do_shutdown() {
// Cygwin-1.5 invokes DLL's dtors before atexit handler.
#ifndef DO_NOTHING_ATEXIT
delete EE;
+ if (CacheManager)
+ delete CacheManager;
llvm_shutdown();
#endif
}
-// Memory manager for MCJIT
-class LLIMCJITMemoryManager : public JITMemoryManager {
-public:
- SmallVector<sys::MemoryBlock, 16> AllocatedDataMem;
- SmallVector<sys::MemoryBlock, 16> AllocatedCodeMem;
- SmallVector<sys::MemoryBlock, 16> FreeCodeMem;
-
- LLIMCJITMemoryManager() { }
- ~LLIMCJITMemoryManager();
-
- virtual uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
- unsigned SectionID);
-
- virtual uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
- unsigned SectionID);
-
- virtual void *getPointerToNamedFunction(const std::string &Name,
- bool AbortOnFailure = true);
-
- // Invalidate instruction cache for code sections. Some platforms with
- // separate data cache and instruction cache require explicit cache flush,
- // otherwise JIT code manipulations (like resolved relocations) will get to
- // the data cache but not to the instruction cache.
- virtual void invalidateInstructionCache();
-
- // The RTDyldMemoryManager doesn't use the following functions, so we don't
- // need implement them.
- virtual void setMemoryWritable() {
- llvm_unreachable("Unexpected call!");
- }
- virtual void setMemoryExecutable() {
- llvm_unreachable("Unexpected call!");
- }
- virtual void setPoisonMemory(bool poison) {
- llvm_unreachable("Unexpected call!");
- }
- virtual void AllocateGOT() {
- llvm_unreachable("Unexpected call!");
- }
- virtual uint8_t *getGOTBase() const {
- llvm_unreachable("Unexpected call!");
- return 0;
- }
- virtual uint8_t *startFunctionBody(const Function *F,
- uintptr_t &ActualSize){
- llvm_unreachable("Unexpected call!");
- return 0;
- }
- virtual uint8_t *allocateStub(const GlobalValue* F, unsigned StubSize,
- unsigned Alignment) {
- llvm_unreachable("Unexpected call!");
- return 0;
- }
- virtual void endFunctionBody(const Function *F, uint8_t *FunctionStart,
- uint8_t *FunctionEnd) {
- llvm_unreachable("Unexpected call!");
- }
- virtual uint8_t *allocateSpace(intptr_t Size, unsigned Alignment) {
- llvm_unreachable("Unexpected call!");
- return 0;
- }
- virtual uint8_t *allocateGlobal(uintptr_t Size, unsigned Alignment) {
- llvm_unreachable("Unexpected call!");
- return 0;
- }
- virtual void deallocateFunctionBody(void *Body) {
- llvm_unreachable("Unexpected call!");
- }
- virtual uint8_t* startExceptionTable(const Function* F,
- uintptr_t &ActualSize) {
- llvm_unreachable("Unexpected call!");
- return 0;
- }
- virtual void endExceptionTable(const Function *F, uint8_t *TableStart,
- uint8_t *TableEnd, uint8_t* FrameRegister) {
- llvm_unreachable("Unexpected call!");
- }
- virtual void deallocateExceptionTable(void *ET) {
- llvm_unreachable("Unexpected call!");
- }
-};
-
-uint8_t *LLIMCJITMemoryManager::allocateDataSection(uintptr_t Size,
- unsigned Alignment,
- unsigned SectionID) {
- if (!Alignment)
- Alignment = 16;
- // Ensure that enough memory is requested to allow aligning.
- size_t NumElementsAligned = 1 + (Size + Alignment - 1)/Alignment;
- uint8_t *Addr = (uint8_t*)calloc(NumElementsAligned, Alignment);
-
- // Honour the alignment requirement.
- uint8_t *AlignedAddr = (uint8_t*)RoundUpToAlignment((uint64_t)Addr, Alignment);
-
- // Store the original address from calloc so we can free it later.
- AllocatedDataMem.push_back(sys::MemoryBlock(Addr, NumElementsAligned*Alignment));
- return AlignedAddr;
-}
-
-uint8_t *LLIMCJITMemoryManager::allocateCodeSection(uintptr_t Size,
- unsigned Alignment,
- unsigned SectionID) {
- if (!Alignment)
- Alignment = 16;
- unsigned NeedAllocate = Alignment * ((Size + Alignment - 1)/Alignment + 1);
- uintptr_t Addr = 0;
- // Look in the list of free code memory regions and use a block there if one
- // is available.
- for (int i = 0, e = FreeCodeMem.size(); i != e; ++i) {
- sys::MemoryBlock &MB = FreeCodeMem[i];
- if (MB.size() >= NeedAllocate) {
- Addr = (uintptr_t)MB.base();
- uintptr_t EndOfBlock = Addr + MB.size();
- // Align the address.
- Addr = (Addr + Alignment - 1) & ~(uintptr_t)(Alignment - 1);
- // Store cutted free memory block.
- FreeCodeMem[i] = sys::MemoryBlock((void*)(Addr + Size),
- EndOfBlock - Addr - Size);
- return (uint8_t*)Addr;
- }
- }
-
- // No pre-allocated free block was large enough. Allocate a new memory region.
- sys::MemoryBlock MB = sys::Memory::AllocateRWX(NeedAllocate, 0, 0);
-
- AllocatedCodeMem.push_back(MB);
- Addr = (uintptr_t)MB.base();
- uintptr_t EndOfBlock = Addr + MB.size();
- // Align the address.
- Addr = (Addr + Alignment - 1) & ~(uintptr_t)(Alignment - 1);
- // The AllocateRWX may allocate much more memory than we need. In this case,
- // we store the unused memory as a free memory block.
- unsigned FreeSize = EndOfBlock-Addr-Size;
- if (FreeSize > 16)
- FreeCodeMem.push_back(sys::MemoryBlock((void*)(Addr + Size), FreeSize));
-
- // Return aligned address
- return (uint8_t*)Addr;
-}
-
-void LLIMCJITMemoryManager::invalidateInstructionCache() {
- for (int i = 0, e = AllocatedCodeMem.size(); i != e; ++i)
- sys::Memory::InvalidateInstructionCache(AllocatedCodeMem[i].base(),
- AllocatedCodeMem[i].size());
-}
-
-static int jit_noop() {
- return 0;
-}
-
-void *LLIMCJITMemoryManager::getPointerToNamedFunction(const std::string &Name,
- bool AbortOnFailure) {
-#if defined(__linux__)
- //===--------------------------------------------------------------------===//
- // Function stubs that are invoked instead of certain library calls
- //
- // Force the following functions to be linked in to anything that uses the
- // JIT. This is a hack designed to work around the all-too-clever Glibc
- // strategy of making these functions work differently when inlined vs. when
- // not inlined, and hiding their real definitions in a separate archive file
- // that the dynamic linker can't see. For more info, search for
- // 'libc_nonshared.a' on Google, or read http://llvm.org/PR274.
- if (Name == "stat") return (void*)(intptr_t)&stat;
- if (Name == "fstat") return (void*)(intptr_t)&fstat;
- if (Name == "lstat") return (void*)(intptr_t)&lstat;
- if (Name == "stat64") return (void*)(intptr_t)&stat64;
- if (Name == "fstat64") return (void*)(intptr_t)&fstat64;
- if (Name == "lstat64") return (void*)(intptr_t)&lstat64;
- if (Name == "atexit") return (void*)(intptr_t)&atexit;
- if (Name == "mknod") return (void*)(intptr_t)&mknod;
-#endif // __linux__
-
- // We should not invoke parent's ctors/dtors from generated main()!
- // On Mingw and Cygwin, the symbol __main is resolved to
- // callee's(eg. tools/lli) one, to invoke wrong duplicated ctors
- // (and register wrong callee's dtors with atexit(3)).
- // We expect ExecutionEngine::runStaticConstructorsDestructors()
- // is called before ExecutionEngine::runFunctionAsMain() is called.
- if (Name == "__main") return (void*)(intptr_t)&jit_noop;
-
- const char *NameStr = Name.c_str();
- void *Ptr = sys::DynamicLibrary::SearchForAddressOfSymbol(NameStr);
- if (Ptr) return Ptr;
-
- // If it wasn't found and if it starts with an underscore ('_') character,
- // try again without the underscore.
- if (NameStr[0] == '_') {
- Ptr = sys::DynamicLibrary::SearchForAddressOfSymbol(NameStr+1);
- if (Ptr) return Ptr;
- }
-
- if (AbortOnFailure)
- report_fatal_error("Program used external function '" + Name +
- "' which could not be resolved!");
- return 0;
-}
-
-LLIMCJITMemoryManager::~LLIMCJITMemoryManager() {
- for (unsigned i = 0, e = AllocatedCodeMem.size(); i != e; ++i)
- sys::Memory::ReleaseRWX(AllocatedCodeMem[i]);
- for (unsigned i = 0, e = AllocatedDataMem.size(); i != e; ++i)
- free(AllocatedDataMem[i].base());
+// On Mingw and Cygwin, an external symbol named '__main' is called from the
+// generated 'main' function to allow static intialization. To avoid linking
+// problems with remote targets (because lli's remote target support does not
+// currently handle external linking) we add a secondary module which defines
+// an empty '__main' function.
+static void addCygMingExtraModule(ExecutionEngine *EE,
+ LLVMContext &Context,
+ StringRef TargetTripleStr) {
+ IRBuilder<> Builder(Context);
+ Triple TargetTriple(TargetTripleStr);
+
+ // Create a new module.
+ std::unique_ptr<Module> M = make_unique<Module>("CygMingHelper", Context);
+ M->setTargetTriple(TargetTripleStr);
+
+ // Create an empty function named "__main".
+ Function *Result;
+ if (TargetTriple.isArch64Bit()) {
+ Result = Function::Create(
+ TypeBuilder<int64_t(void), false>::get(Context),
+ GlobalValue::ExternalLinkage, "__main", M.get());
+ } else {
+ Result = Function::Create(
+ TypeBuilder<int32_t(void), false>::get(Context),
+ GlobalValue::ExternalLinkage, "__main", M.get());
+ }
+ BasicBlock *BB = BasicBlock::Create(Context, "__main", Result);
+ Builder.SetInsertPoint(BB);
+ Value *ReturnVal;
+ if (TargetTriple.isArch64Bit())
+ ReturnVal = ConstantInt::get(Context, APInt(64, 0));
+ else
+ ReturnVal = ConstantInt::get(Context, APInt(32, 0));
+ Builder.CreateRet(ReturnVal);
+
+ // Add this new module to the ExecutionEngine.
+ EE->addModule(std::move(M));
}
-
-void layoutRemoteTargetMemory(RemoteTarget *T, RecordingMemoryManager *JMM) {
- // Lay out our sections in order, with all the code sections first, then
- // all the data sections.
- uint64_t CurOffset = 0;
- unsigned MaxAlign = T->getPageAlignment();
- SmallVector<std::pair<const void*, uint64_t>, 16> Offsets;
- SmallVector<unsigned, 16> Sizes;
- for (RecordingMemoryManager::const_code_iterator I = JMM->code_begin(),
- E = JMM->code_end();
- I != E; ++I) {
- DEBUG(dbgs() << "code region: size " << I->first.size()
- << ", alignment " << I->second << "\n");
- // Align the current offset up to whatever is needed for the next
- // section.
- unsigned Align = I->second;
- CurOffset = (CurOffset + Align - 1) / Align * Align;
- // Save off the address of the new section and allocate its space.
- Offsets.push_back(std::pair<const void*,uint64_t>(I->first.base(), CurOffset));
- Sizes.push_back(I->first.size());
- CurOffset += I->first.size();
- }
- // Adjust to keep code and data aligned on seperate pages.
- CurOffset = (CurOffset + MaxAlign - 1) / MaxAlign * MaxAlign;
- unsigned FirstDataIndex = Offsets.size();
- for (RecordingMemoryManager::const_data_iterator I = JMM->data_begin(),
- E = JMM->data_end();
- I != E; ++I) {
- DEBUG(dbgs() << "data region: size " << I->first.size()
- << ", alignment " << I->second << "\n");
- // Align the current offset up to whatever is needed for the next
- // section.
- unsigned Align = I->second;
- CurOffset = (CurOffset + Align - 1) / Align * Align;
- // Save off the address of the new section and allocate its space.
- Offsets.push_back(std::pair<const void*,uint64_t>(I->first.base(), CurOffset));
- Sizes.push_back(I->first.size());
- CurOffset += I->first.size();
- }
-
- // Allocate space in the remote target.
- uint64_t RemoteAddr;
- if (T->allocateSpace(CurOffset, MaxAlign, RemoteAddr))
- report_fatal_error(T->getErrorMsg());
- // Map the section addresses so relocations will get updated in the local
- // copies of the sections.
- for (unsigned i = 0, e = Offsets.size(); i != e; ++i) {
- uint64_t Addr = RemoteAddr + Offsets[i].second;
- EE->mapSectionAddress(const_cast<void*>(Offsets[i].first), Addr);
-
- DEBUG(dbgs() << " Mapping local: " << Offsets[i].first
- << " to remote: " << format("%p", Addr) << "\n");
-
- }
-
- // Trigger application of relocations
- EE->finalizeObject();
-
- // Now load it all to the target.
- for (unsigned i = 0, e = Offsets.size(); i != e; ++i) {
- uint64_t Addr = RemoteAddr + Offsets[i].second;
-
- if (i < FirstDataIndex) {
- T->loadCode(Addr, Offsets[i].first, Sizes[i]);
-
- DEBUG(dbgs() << " loading code: " << Offsets[i].first
- << " to remote: " << format("%p", Addr) << "\n");
- } else {
- T->loadData(Addr, Offsets[i].first, Sizes[i]);
-
- DEBUG(dbgs() << " loading data: " << Offsets[i].first
- << " to remote: " << format("%p", Addr) << "\n");
- }
-
+CodeGenOpt::Level getOptLevel() {
+ switch (OptLevel) {
+ default:
+ errs() << "lli: Invalid optimization level.\n";
+ exit(1);
+ case '0': return CodeGenOpt::None;
+ case '1': return CodeGenOpt::Less;
+ case ' ':
+ case '2': return CodeGenOpt::Default;
+ case '3': return CodeGenOpt::Aggressive;
}
+ llvm_unreachable("Unrecognized opt level.");
}
//===----------------------------------------------------------------------===//
// Load the bitcode...
SMDiagnostic Err;
- Module *Mod = ParseIRFile(InputFile, Err, Context);
+ std::unique_ptr<Module> Owner = parseIRFile(InputFile, Err, Context);
+ Module *Mod = Owner.get();
if (!Mod) {
Err.print(argv[0], errs());
return 1;
}
+ if (UseJITKind == JITKind::OrcLazy)
+ return runOrcLazyJIT(std::move(Owner), argc, argv);
+
+ if (EnableCacheManager) {
+ std::string CacheName("file:");
+ CacheName.append(InputFile);
+ Mod->setModuleIdentifier(CacheName);
+ }
+
// If not jitting lazily, load the whole bitcode file eagerly too.
- std::string ErrorMsg;
if (NoLazyCompilation) {
- if (Mod->MaterializeAllPermanently(&ErrorMsg)) {
+ if (std::error_code EC = Mod->materializeAll()) {
errs() << argv[0] << ": bitcode didn't read correctly.\n";
- errs() << "Reason: " << ErrorMsg << "\n";
+ errs() << "Reason: " << EC.message() << "\n";
exit(1);
}
}
- EngineBuilder builder(Mod);
+ std::string ErrorMsg;
+ EngineBuilder builder(std::move(Owner));
builder.setMArch(MArch);
builder.setMCPU(MCPU);
builder.setMAttrs(MAttrs);
builder.setEngineKind(ForceInterpreter
? EngineKind::Interpreter
: EngineKind::JIT);
+ builder.setUseOrcMCJITReplacement(UseJITKind == JITKind::OrcMCJITReplacement);
// If we are supposed to override the target triple, do so now.
if (!TargetTriple.empty())
Mod->setTargetTriple(Triple::normalize(TargetTriple));
// Enable MCJIT if desired.
- JITMemoryManager *JMM = 0;
- if (UseMCJIT && !ForceInterpreter) {
- builder.setUseMCJIT(true);
+ RTDyldMemoryManager *RTDyldMM = nullptr;
+ if (!ForceInterpreter) {
if (RemoteMCJIT)
- JMM = new RecordingMemoryManager();
+ RTDyldMM = new RemoteMemoryManager();
else
- JMM = new LLIMCJITMemoryManager();
- builder.setJITMemoryManager(JMM);
- } else {
- if (RemoteMCJIT) {
- errs() << "error: Remote process execution requires -use-mcjit\n";
- exit(1);
- }
- builder.setJITMemoryManager(ForceInterpreter ? 0 :
- JITMemoryManager::CreateDefaultMemManager());
+ RTDyldMM = new SectionMemoryManager();
+
+ // Deliberately construct a temp std::unique_ptr to pass in. Do not null out
+ // RTDyldMM: We still use it below, even though we don't own it.
+ builder.setMCJITMemoryManager(
+ std::unique_ptr<RTDyldMemoryManager>(RTDyldMM));
+ } else if (RemoteMCJIT) {
+ errs() << "error: Remote process execution does not work with the "
+ "interpreter.\n";
+ exit(1);
}
- CodeGenOpt::Level OLvl = CodeGenOpt::Default;
- switch (OptLevel) {
- default:
- errs() << argv[0] << ": invalid optimization level.\n";
- return 1;
- case ' ': break;
- case '0': OLvl = CodeGenOpt::None; break;
- case '1': OLvl = CodeGenOpt::Less; break;
- case '2': OLvl = CodeGenOpt::Default; break;
- case '3': OLvl = CodeGenOpt::Aggressive; break;
- }
- builder.setOptLevel(OLvl);
+ builder.setOptLevel(getOptLevel());
TargetOptions Options;
- Options.UseSoftFloat = GenerateSoftFloatCalls;
if (FloatABIForCalls != FloatABI::Default)
Options.FloatABIType = FloatABIForCalls;
- if (GenerateSoftFloatCalls)
- FloatABIForCalls = FloatABI::Soft;
-
- // Remote target execution doesn't handle EH or debug registration.
- if (!RemoteMCJIT) {
- Options.JITExceptionHandling = EnableJITExceptionHandling;
- Options.JITEmitDebugInfo = EmitJitDebugInfo;
- Options.JITEmitDebugInfoToDisk = EmitJitDebugInfoToDisk;
- }
builder.setTargetOptions(Options);
exit(1);
}
+ if (EnableCacheManager) {
+ CacheManager = new LLIObjectCache(ObjectCacheDir);
+ EE->setObjectCache(CacheManager);
+ }
+
+ // Load any additional modules specified on the command line.
+ for (unsigned i = 0, e = ExtraModules.size(); i != e; ++i) {
+ std::unique_ptr<Module> XMod = parseIRFile(ExtraModules[i], Err, Context);
+ if (!XMod) {
+ Err.print(argv[0], errs());
+ return 1;
+ }
+ if (EnableCacheManager) {
+ std::string CacheName("file:");
+ CacheName.append(ExtraModules[i]);
+ XMod->setModuleIdentifier(CacheName);
+ }
+ EE->addModule(std::move(XMod));
+ }
+
+ for (unsigned i = 0, e = ExtraObjects.size(); i != e; ++i) {
+ ErrorOr<object::OwningBinary<object::ObjectFile>> Obj =
+ object::ObjectFile::createObjectFile(ExtraObjects[i]);
+ if (!Obj) {
+ Err.print(argv[0], errs());
+ return 1;
+ }
+ object::OwningBinary<object::ObjectFile> &O = Obj.get();
+ EE->addObjectFile(std::move(O));
+ }
+
+ for (unsigned i = 0, e = ExtraArchives.size(); i != e; ++i) {
+ ErrorOr<std::unique_ptr<MemoryBuffer>> ArBufOrErr =
+ MemoryBuffer::getFileOrSTDIN(ExtraArchives[i]);
+ if (!ArBufOrErr) {
+ Err.print(argv[0], errs());
+ return 1;
+ }
+ std::unique_ptr<MemoryBuffer> &ArBuf = ArBufOrErr.get();
+
+ ErrorOr<std::unique_ptr<object::Archive>> ArOrErr =
+ object::Archive::create(ArBuf->getMemBufferRef());
+ if (std::error_code EC = ArOrErr.getError()) {
+ errs() << EC.message();
+ return 1;
+ }
+ std::unique_ptr<object::Archive> &Ar = ArOrErr.get();
+
+ object::OwningBinary<object::Archive> OB(std::move(Ar), std::move(ArBuf));
+
+ EE->addArchive(std::move(OB));
+ }
+
+ // If the target is Cygwin/MingW and we are generating remote code, we
+ // need an extra module to help out with linking.
+ if (RemoteMCJIT && Triple(Mod->getTargetTriple()).isOSCygMing()) {
+ addCygMingExtraModule(EE, Context, Mod->getTargetTriple());
+ }
+
// The following functions have no effect if their respective profiling
// support wasn't enabled in the build configuration.
EE->RegisterJITEventListener(
// If the user specifically requested an argv[0] to pass into the program,
// do it now.
if (!FakeArgv0.empty()) {
- InputFile = FakeArgv0;
+ InputFile = static_cast<std::string>(FakeArgv0);
} else {
// Otherwise, if there is a .bc suffix on the executable strip it off, it
// might confuse the program.
return -1;
}
- // If the program doesn't explicitly call exit, we will need the Exit
- // function later on to make an explicit call, so get the function now.
- Constant *Exit = Mod->getOrInsertFunction("exit", Type::getVoidTy(Context),
- Type::getInt32Ty(Context),
- NULL);
-
// Reset errno to zero on entry to main.
errno = 0;
- // Remote target MCJIT doesn't (yet) support static constructors. No reason
- // it couldn't. This is a limitation of the LLI implemantation, not the
- // MCJIT itself. FIXME.
- //
- // Run static constructors.
- if (!RemoteMCJIT)
- EE->runStaticConstructorsDestructors(false);
-
- if (NoLazyCompilation) {
- for (Module::iterator I = Mod->begin(), E = Mod->end(); I != E; ++I) {
- Function *Fn = &*I;
- if (Fn != EntryFn && !Fn->isDeclaration())
- EE->getPointerToFunction(Fn);
- }
- }
-
int Result;
- if (RemoteMCJIT) {
- RecordingMemoryManager *MM = static_cast<RecordingMemoryManager*>(JMM);
- // Everything is prepared now, so lay out our program for the target
- // address space, assign the section addresses to resolve any relocations,
- // and send it to the target.
- RemoteTarget Target;
- Target.create();
-
- // Ask for a pointer to the entry function. This triggers the actual
- // compilation.
- (void)EE->getPointerToFunction(EntryFn);
-
- // Enough has been compiled to execute the entry function now, so
- // layout the target memory.
- layoutRemoteTargetMemory(&Target, MM);
-
- // Since we're executing in a (at least simulated) remote address space,
- // we can't use the ExecutionEngine::runFunctionAsMain(). We have to
- // grab the function address directly here and tell the remote target
- // to execute the function.
- // FIXME: argv and envp handling.
- uint64_t Entry = (uint64_t)EE->getPointerToFunction(EntryFn);
-
- DEBUG(dbgs() << "Executing '" << EntryFn->getName() << "' at "
- << format("%p", Entry) << "\n");
- if (Target.executeCode(Entry, Result))
- errs() << "ERROR: " << Target.getErrorMsg() << "\n";
+ if (!RemoteMCJIT) {
+ // If the program doesn't explicitly call exit, we will need the Exit
+ // function later on to make an explicit call, so get the function now.
+ Constant *Exit = Mod->getOrInsertFunction("exit", Type::getVoidTy(Context),
+ Type::getInt32Ty(Context),
+ nullptr);
+
+ // Run static constructors.
+ if (!ForceInterpreter) {
+ // Give MCJIT a chance to apply relocations and set page permissions.
+ EE->finalizeObject();
+ }
+ EE->runStaticConstructorsDestructors(false);
- Target.stop();
- } else {
- // Trigger compilation separately so code regions that need to be
+ // Trigger compilation separately so code regions that need to be
// invalidated will be known.
(void)EE->getPointerToFunction(EntryFn);
// Clear instruction cache before code will be executed.
- if (JMM)
- static_cast<LLIMCJITMemoryManager*>(JMM)->invalidateInstructionCache();
+ if (RTDyldMM)
+ static_cast<SectionMemoryManager*>(RTDyldMM)->invalidateInstructionCache();
// Run main.
Result = EE->runFunctionAsMain(EntryFn, InputArgv, envp);
- }
- // Like static constructors, the remote target MCJIT support doesn't handle
- // this yet. It could. FIXME.
- if (!RemoteMCJIT) {
// Run static destructors.
EE->runStaticConstructorsDestructors(true);
errs() << "ERROR: exit defined with wrong prototype!\n";
abort();
}
+ } else {
+ // else == "if (RemoteMCJIT)"
+
+ // Remote target MCJIT doesn't (yet) support static constructors. No reason
+ // it couldn't. This is a limitation of the LLI implemantation, not the
+ // MCJIT itself. FIXME.
+ //
+ RemoteMemoryManager *MM = static_cast<RemoteMemoryManager*>(RTDyldMM);
+ // Everything is prepared now, so lay out our program for the target
+ // address space, assign the section addresses to resolve any relocations,
+ // and send it to the target.
+
+ std::unique_ptr<RemoteTarget> Target;
+ if (!ChildExecPath.empty()) { // Remote execution on a child process
+#ifndef LLVM_ON_UNIX
+ // FIXME: Remove this pointless fallback mode which causes tests to "pass"
+ // on platforms where they should XFAIL.
+ errs() << "Warning: host does not support external remote targets.\n"
+ << " Defaulting to simulated remote execution\n";
+ Target.reset(new RemoteTarget);
+#else
+ if (!sys::fs::can_execute(ChildExecPath)) {
+ errs() << "Unable to find usable child executable: '" << ChildExecPath
+ << "'\n";
+ return -1;
+ }
+ Target.reset(new RemoteTargetExternal(ChildExecPath));
+#endif
+ } else {
+ // No child process name provided, use simulated remote execution.
+ Target.reset(new RemoteTarget);
+ }
+
+ // Give the memory manager a pointer to our remote target interface object.
+ MM->setRemoteTarget(Target.get());
+
+ // Create the remote target.
+ if (!Target->create()) {
+ errs() << "ERROR: " << Target->getErrorMsg() << "\n";
+ return EXIT_FAILURE;
+ }
+
+ // Since we're executing in a (at least simulated) remote address space,
+ // we can't use the ExecutionEngine::runFunctionAsMain(). We have to
+ // grab the function address directly here and tell the remote target
+ // to execute the function.
+ //
+ // Our memory manager will map generated code into the remote address
+ // space as it is loaded and copy the bits over during the finalizeMemory
+ // operation.
+ //
+ // FIXME: argv and envp handling.
+ uint64_t Entry = EE->getFunctionAddress(EntryFn->getName().str());
+
+ DEBUG(dbgs() << "Executing '" << EntryFn->getName() << "' at 0x"
+ << format("%llx", Entry) << "\n");
+
+ if (!Target->executeCode(Entry, Result))
+ errs() << "ERROR: " << Target->getErrorMsg() << "\n";
+
+ // Like static constructors, the remote target MCJIT support doesn't handle
+ // this yet. It could. FIXME.
+
+ // Stop the remote target
+ Target->stop();
}
+
return Result;
}
projects / oota-llvm.git / blobdiff