X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=tools%2Flli%2Flli.cpp;h=50c7a498f1cdaed12c0ba9b9ed847ce1fb7748d0;hb=adf01b3f18442ae8db6b8948e70d82d9df415119;hp=67b1424d839fa1a5315e0932dded192f84f0d2d4;hpb=03dace82f416687f3752b99c7caef8d4519637a1;p=oota-llvm.git diff --git a/tools/lli/lli.cpp b/tools/lli/lli.cpp index 67b1424d839..50c7a498f1c 100644 --- a/tools/lli/lli.cpp +++ b/tools/lli/lli.cpp @@ -9,26 +9,40 @@ // // 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/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/System/Process.h" -#include "llvm/System/Signals.h" -#include +#include "llvm/Support/PrettyStackTrace.h" +#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 { @@ -41,8 +55,45 @@ namespace { cl::opt ForceInterpreter("force-interpreter", 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", + cl::desc("Optimization level. [-O0, -O1, -O2, or -O3] " + "(default = '-O2')"), + cl::Prefix, + cl::ZeroOrMore, + cl::init(' ')); + 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", @@ -57,63 +108,134 @@ 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 } //===----------------------------------------------------------------------===// // main Driver function // 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"); - sys::PrintStackTraceOnErrorSignal(); // 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.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) + builder.setUseMCJIT(true); - EE = ExecutionEngine::create(MP, ForceInterpreter, &ErrorMsg); - if (!EE && !ErrorMsg.empty()) { - std::cerr << argv[0] << ":error creating EE: " << ErrorMsg << "\n"; + 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); + + 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(); + EE->RegisterJITEventListener(createOProfileJITEventListener()); + + EE->DisableLazyCompilation(NoLazyCompilation); // If the user specifically requested an argv[0] to pass into the program, // do it now. @@ -122,7 +244,7 @@ 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); } @@ -134,16 +256,17 @@ int main(int argc, char **argv, char * const *envp) { // using the contents of Args to determine argc & argv, and the contents of // EnvVars to determine envp. // - Function *MainFn = Mod->getFunction("main"); - if (!MainFn) { - std::cerr << "'main' function not found in module.\n"; + Function *EntryFn = Mod->getFunction(EntryFunc); + if (!EntryFn) { + 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); + Constant *Exit = Mod->getOrInsertFunction("exit", Type::getVoidTy(Context), + Type::getInt32Ty(Context), + NULL); // Reset errno to zero on entry to main. errno = 0; @@ -154,13 +277,13 @@ int main(int argc, char **argv, char * const *envp) { if (NoLazyCompilation) { for (Module::iterator I = Mod->begin(), E = Mod->end(); I != E; ++I) { Function *Fn = &*I; - if (Fn != MainFn && !Fn->isDeclaration()) + if (Fn != EntryFn && !Fn->isDeclaration()) EE->getPointerToFunction(Fn); } } // Run main. - int Result = EE->runFunctionAsMain(MainFn, InputArgv, envp); + int Result = EE->runFunctionAsMain(EntryFn, InputArgv, envp); // Run static destructors. EE->runStaticConstructorsDestructors(true); @@ -173,10 +296,10 @@ 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(); } }