X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=tools%2Flli%2Flli.cpp;h=adc6e90eb99a9c02fd492da28c3be3a463f2990d;hb=867fe8570f299a058f155f98646d85cabc27155b;hp=fdb5f4aa397b162808aae695c42e5fb139f02dfc;hpb=065344dfd5a7b3502098810b981eb0077e5d81f3;p=oota-llvm.git diff --git a/tools/lli/lli.cpp b/tools/lli/lli.cpp index fdb5f4aa397..adc6e90eb99 100644 --- a/tools/lli/lli.cpp +++ b/tools/lli/lli.cpp @@ -2,38 +2,50 @@ // // The LLVM Compiler Infrastructure // -// This file was developed by the LLVM research group and is distributed under -// the University of Illinois Open Source License. See LICENSE.TXT for details. +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // 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/Support/CommandLine.h" #include "llvm/Support/ManagedStatic.h" #include "llvm/Support/MemoryBuffer.h" #include "llvm/Support/PluginLoader.h" +#include "llvm/Support/PrettyStackTrace.h" +#include "llvm/Support/raw_ostream.h" #include "llvm/System/Process.h" #include "llvm/System/Signals.h" -#include +#include "llvm/Target/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 { cl::opt - InputFile(cl::desc(""), cl::Positional, cl::init("-")); + InputFile(cl::desc(""), cl::Positional, cl::init("-")); cl::list InputArgv(cl::ConsumeAfter, cl::desc("...")); @@ -41,8 +53,41 @@ namespace { cl::opt ForceInterpreter("force-interpreter", cl::desc("Force interpretation: disable JIT"), 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", @@ -52,55 +97,106 @@ namespace { cl::opt DisableCoreFiles("disable-core-files", cl::Hidden, cl::desc("Disable emission of core files if possible")); + + cl::opt + NoLazyCompilation("disable-lazy-compilation", + cl::desc("Disable JIT lazy compilation"), + cl::init(false)); } 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(); + cl::ParseCommandLineOptions(argc, argv, - " llvm interpreter & dynamic compiler\n"); - sys::PrintStackTraceOnErrorSignal(); + "llvm interpreter & dynamic compiler\n"); // If the user doesn't want core files, disable them. if (DisableCoreFiles) sys::Process::PreventCoreFiles(); - // Load the bytecode... + // Load the bitcode... std::string ErrorMsg; - ModuleProvider *MP = 0; + Module *Mod = NULL; if (MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFile,&ErrorMsg)){ - MP = getBitcodeModuleProvider(Buffer, &ErrorMsg); - if (!MP) delete Buffer; + Mod = getLazyBitcodeModule(Buffer, Context, &ErrorMsg); + if (!Mod) delete Buffer; } - if (!MP) { - std::cerr << argv[0] << ": error loading program '" << InputFile << "': " - << ErrorMsg << "\n"; + if (!Mod) { + errs() << argv[0] << ": error loading program '" << InputFile << "': " + << ErrorMsg << "\n"; exit(1); } - // Get the module as the MP could go away once EE takes over. - Module *Mod = MP->getModule(); + // If not jitting lazily, load the whole bitcode file eagerly too. + 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.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); - - EE = ExecutionEngine::create(MP, ForceInterpreter, &ErrorMsg); - if (!EE && !ErrorMsg.empty()) { - std::cerr << argv[0] << ":error creating EE: " << ErrorMsg << "\n"; + Mod->setTargetTriple(Triple::normalize(TargetTriple)); + + 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); } + EE->RegisterJITEventListener(createOProfileJITEventListener()); + + EE->DisableLazyCompilation(NoLazyCompilation); + // If the user specifically requested an argv[0] to pass into the program, // do it now. if (!FakeArgv0.empty()) { @@ -108,7 +204,7 @@ 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); } @@ -120,25 +216,34 @@ 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 *Fn = Mod->getFunction("main"); - if (!Fn) { - 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; // Run static constructors. 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); + } + } + // Run main. - int Result = EE->runFunctionAsMain(Fn, InputArgv, envp); + int Result = EE->runFunctionAsMain(EntryFn, InputArgv, envp); // Run static destructors. EE->runStaticConstructorsDestructors(true); @@ -151,10 +256,10 @@ 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(); } }