X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=tools%2Flli%2Flli.cpp;h=efcc1f5870cac31c6ff94b3d267eb2e3b6f8a45d;hb=61b1851a205cb8dd29c1d3d4231efb8f8f7da283;hp=6d3cbbc1f5fc4a3ba2de01802a7ad1138a15e588;hpb=712e80e188c306125e32e46e9ed5db9dfc2f7cc9;p=oota-llvm.git diff --git a/tools/lli/lli.cpp b/tools/lli/lli.cpp index 6d3cbbc1f5f..efcc1f5870c 100644 --- a/tools/lli/lli.cpp +++ b/tools/lli/lli.cpp @@ -9,27 +9,41 @@ // // This utility provides a simple wrapper around the LLVM Execution Engines, // which allow the direct execution of LLVM programs through a Just-In-Time -// compiler, or through an intepreter if no JIT is available for this platform. +// compiler, or through an interpreter if no JIT is available for this platform. // //===----------------------------------------------------------------------===// +#include "llvm/LLVMContext.h" #include "llvm/Module.h" -#include "llvm/ModuleProvider.h" #include "llvm/Type.h" +#include "llvm/ADT/Triple.h" #include "llvm/Bitcode/ReaderWriter.h" #include "llvm/CodeGen/LinkAllCodegenComponents.h" -#include "llvm/ExecutionEngine/JIT.h" -#include "llvm/ExecutionEngine/Interpreter.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/Support/CommandLine.h" +#include "llvm/Support/IRReader.h" #include "llvm/Support/ManagedStatic.h" #include "llvm/Support/MemoryBuffer.h" #include "llvm/Support/PluginLoader.h" #include "llvm/Support/PrettyStackTrace.h" -#include "llvm/System/Process.h" -#include "llvm/System/Signals.h" -#include +#include "llvm/Support/raw_ostream.h" +#include "llvm/Support/Process.h" +#include "llvm/Support/Signals.h" +#include "llvm/Support/TargetSelect.h" #include + +#ifdef __CYGWIN__ +#include +#if defined(CYGWIN_VERSION_DLL_MAJOR) && CYGWIN_VERSION_DLL_MAJOR<1007 +#define DO_NOTHING_ATEXIT 1 +#endif +#endif + using namespace llvm; namespace { @@ -43,6 +57,10 @@ namespace { cl::desc("Force interpretation: disable JIT"), cl::init(false)); + cl::opt UseMCJIT( + "use-mcjit", cl::desc("Enable use of the MC-based JIT (if available)"), + cl::init(false)); + // Determine optimization level. cl::opt OptLevel("O", @@ -55,18 +73,34 @@ namespace { cl::opt TargetTriple("mtriple", cl::desc("Override target triple for module")); + cl::opt + MArch("march", + cl::desc("Architecture to generate assembly for (see --version)")); + + cl::opt + MCPU("mcpu", + cl::desc("Target a specific cpu type (-mcpu=help for details)"), + cl::value_desc("cpu-name"), + cl::init("")); + + cl::list + MAttrs("mattr", + cl::CommaSeparated, + cl::desc("Target specific attributes (-mattr=help for details)"), + cl::value_desc("a1,+a2,-a3,...")); + cl::opt EntryFunc("entry-function", cl::desc("Specify the entry function (default = 'main') " "of the executable"), cl::value_desc("function"), cl::init("main")); - + cl::opt FakeArgv0("fake-argv0", cl::desc("Override the 'argv[0]' value passed into the executing" " program"), cl::value_desc("executable")); - + cl::opt DisableCoreFiles("disable-core-files", cl::Hidden, cl::desc("Disable emission of core files if possible")); @@ -75,13 +109,48 @@ namespace { NoLazyCompilation("disable-lazy-compilation", cl::desc("Disable JIT lazy compilation"), cl::init(false)); + + cl::opt + RelocModel("relocation-model", + cl::desc("Choose relocation model"), + cl::init(Reloc::Default), + cl::values( + clEnumValN(Reloc::Default, "default", + "Target default relocation model"), + clEnumValN(Reloc::Static, "static", + "Non-relocatable code"), + clEnumValN(Reloc::PIC_, "pic", + "Fully relocatable, position independent code"), + clEnumValN(Reloc::DynamicNoPIC, "dynamic-no-pic", + "Relocatable external references, non-relocatable code"), + clEnumValEnd)); + + cl::opt + CMModel("code-model", + cl::desc("Choose code model"), + cl::init(CodeModel::JITDefault), + cl::values(clEnumValN(CodeModel::JITDefault, "default", + "Target default JIT code model"), + clEnumValN(CodeModel::Small, "small", + "Small code model"), + clEnumValN(CodeModel::Kernel, "kernel", + "Kernel code model"), + clEnumValN(CodeModel::Medium, "medium", + "Medium code model"), + clEnumValN(CodeModel::Large, "large", + "Large code model"), + clEnumValEnd)); + } static ExecutionEngine *EE = 0; static void do_shutdown() { + // Cygwin-1.5 invokes DLL's dtors before atexit handler. +#ifndef DO_NOTHING_ATEXIT delete EE; llvm_shutdown(); +#endif } //===----------------------------------------------------------------------===// @@ -90,62 +159,93 @@ static void do_shutdown() { int main(int argc, char **argv, char * const *envp) { sys::PrintStackTraceOnErrorSignal(); PrettyStackTraceProgram X(argc, argv); - + + LLVMContext &Context = getGlobalContext(); atexit(do_shutdown); // Call llvm_shutdown() on exit. + + // If we have a native target, initialize it to ensure it is linked in and + // usable by the JIT. + InitializeNativeTarget(); + InitializeNativeTargetAsmPrinter(); + cl::ParseCommandLineOptions(argc, argv, "llvm interpreter & dynamic compiler\n"); // If the user doesn't want core files, disable them. if (DisableCoreFiles) sys::Process::PreventCoreFiles(); - + // Load the bitcode... - std::string ErrorMsg; - ModuleProvider *MP = NULL; - if (MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFile,&ErrorMsg)) { - MP = getBitcodeModuleProvider(Buffer, &ErrorMsg); - if (!MP) delete Buffer; - } - - if (!MP) { - std::cerr << argv[0] << ": error loading program '" << InputFile << "': " - << ErrorMsg << "\n"; - exit(1); + SMDiagnostic Err; + Module *Mod = ParseIRFile(InputFile, Err, Context); + if (!Mod) { + Err.print(argv[0], errs()); + return 1; } - // Get the module as the MP could go away once EE takes over. - Module *Mod = NoLazyCompilation - ? MP->materializeModule(&ErrorMsg) : MP->getModule(); - if (!Mod) { - std::cerr << argv[0] << ": bitcode didn't read correctly.\n"; - std::cerr << "Reason: " << ErrorMsg << "\n"; - exit(1); + // If not jitting lazily, load the whole bitcode file eagerly too. + std::string ErrorMsg; + if (NoLazyCompilation) { + if (Mod->MaterializeAllPermanently(&ErrorMsg)) { + errs() << argv[0] << ": bitcode didn't read correctly.\n"; + errs() << "Reason: " << ErrorMsg << "\n"; + exit(1); + } } + EngineBuilder builder(Mod); + builder.setMArch(MArch); + builder.setMCPU(MCPU); + builder.setMAttrs(MAttrs); + builder.setRelocationModel(RelocModel); + builder.setCodeModel(CMModel); + builder.setErrorStr(&ErrorMsg); + builder.setJITMemoryManager(ForceInterpreter ? 0 : + JITMemoryManager::CreateDefaultMemManager()); + builder.setEngineKind(ForceInterpreter + ? EngineKind::Interpreter + : EngineKind::JIT); + // If we are supposed to override the target triple, do so now. if (!TargetTriple.empty()) - Mod->setTargetTriple(TargetTriple); + Mod->setTargetTriple(Triple::normalize(TargetTriple)); + + // Enable MCJIT if desired. + if (UseMCJIT && !ForceInterpreter) { + builder.setUseMCJIT(true); + builder.setJITMemoryManager(JITMemoryManager::CreateDefaultMemManager()); + } CodeGenOpt::Level OLvl = CodeGenOpt::Default; switch (OptLevel) { default: - std::cerr << argv[0] << ": invalid optimization level.\n"; + errs() << argv[0] << ": invalid optimization level.\n"; return 1; case ' ': break; case '0': OLvl = CodeGenOpt::None; break; - case '1': + case '1': OLvl = CodeGenOpt::Less; break; case '2': OLvl = CodeGenOpt::Default; break; case '3': OLvl = CodeGenOpt::Aggressive; break; } + builder.setOptLevel(OLvl); - EE = ExecutionEngine::create(MP, ForceInterpreter, &ErrorMsg, OLvl); - if (!EE && !ErrorMsg.empty()) { - std::cerr << argv[0] << ":error creating EE: " << ErrorMsg << "\n"; + EE = builder.create(); + if (!EE) { + if (!ErrorMsg.empty()) + errs() << argv[0] << ": error creating EE: " << ErrorMsg << "\n"; + else + errs() << argv[0] << ": unknown error creating EE!\n"; exit(1); } - if (NoLazyCompilation) - EE->DisableLazyCompilation(); + // The following functions have no effect if their respective profiling + // support wasn't enabled in the build configuration. + EE->RegisterJITEventListener( + JITEventListener::createOProfileJITEventListener()); + EE->RegisterJITEventListener( + JITEventListener::createIntelJITEventListener()); + + EE->DisableLazyCompilation(NoLazyCompilation); // If the user specifically requested an argv[0] to pass into the program, // do it now. @@ -154,7 +254,7 @@ int main(int argc, char **argv, char * const *envp) { } else { // Otherwise, if there is a .bc suffix on the executable strip it off, it // might confuse the program. - if (InputFile.rfind(".bc") == InputFile.length() - 3) + if (StringRef(InputFile).endswith(".bc")) InputFile.erase(InputFile.length() - 3); } @@ -168,18 +268,19 @@ int main(int argc, char **argv, char * const *envp) { // Function *EntryFn = Mod->getFunction(EntryFunc); if (!EntryFn) { - std::cerr << '\'' << EntryFunc << "\' function not found in module.\n"; + errs() << '\'' << EntryFunc << "\' function not found in module.\n"; 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::VoidTy, - Type::Int32Ty, NULL); - + // 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; - + // Run static constructors. EE->runStaticConstructorsDestructors(false); @@ -196,8 +297,8 @@ int main(int argc, char **argv, char * const *envp) { // Run static destructors. EE->runStaticConstructorsDestructors(true); - - // If the program didn't call exit explicitly, we should call it now. + + // If the program didn't call exit explicitly, we should call it now. // This ensures that any atexit handlers get called correctly. if (Function *ExitF = dyn_cast(Exit)) { std::vector Args; @@ -205,10 +306,10 @@ int main(int argc, char **argv, char * const *envp) { ResultGV.IntVal = APInt(32, Result); Args.push_back(ResultGV); EE->runFunction(ExitF, Args); - std::cerr << "ERROR: exit(" << Result << ") returned!\n"; + errs() << "ERROR: exit(" << Result << ") returned!\n"; abort(); } else { - std::cerr << "ERROR: exit defined with wrong prototype!\n"; + errs() << "ERROR: exit defined with wrong prototype!\n"; abort(); } }