//
// 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/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/System/Process.h"
#include "llvm/System/Signals.h"
+#include "llvm/Target/TargetSelect.h"
#include <iostream>
#include <cerrno>
using namespace llvm;
cl::desc("Force interpretation: disable JIT"),
cl::init(false));
- cl::opt<bool> Fast("fast",
- cl::desc("Generate code quickly, "
- "potentially sacrificing code quality"),
- cl::init(false));
+ // Determine optimization level.
+ cl::opt<char>
+ OptLevel("O",
+ cl::desc("Optimization level. [-O0, -O1, -O2, or -O3] "
+ "(default = '-O2')"),
+ cl::Prefix,
+ cl::ZeroOrMore,
+ cl::init(' '));
cl::opt<std::string>
TargetTriple("mtriple", cl::desc("Override target triple for module"));
// main Driver function
//
int main(int argc, char **argv, char * const *envp) {
+ sys::PrintStackTraceOnErrorSignal();
+ PrettyStackTraceProgram X(argc, argv);
+
+ LLVMContext Context;
atexit(do_shutdown); // Call llvm_shutdown() on exit.
cl::ParseCommandLineOptions(argc, argv,
"llvm interpreter & dynamic compiler\n");
- sys::PrintStackTraceOnErrorSignal();
// If the user doesn't want core files, disable them.
if (DisableCoreFiles)
// Load the bitcode...
std::string ErrorMsg;
ModuleProvider *MP = NULL;
- if (MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFile,&ErrorMsg)) {
- MP = getBitcodeModuleProvider(Buffer, &ErrorMsg);
+ if (MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFile,&ErrorMsg)){
+ MP = getBitcodeModuleProvider(Buffer, Context, &ErrorMsg);
if (!MP) delete Buffer;
}
if (!MP) {
- std::cerr << argv[0] << ": error loading program '" << InputFile << "': "
- << ErrorMsg << "\n";
+ errs() << argv[0] << ": error loading program '" << InputFile << "': "
+ << ErrorMsg << "\n";
exit(1);
}
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";
+ errs() << argv[0] << ": bitcode didn't read correctly.\n";
+ errs() << "Reason: " << ErrorMsg << "\n";
exit(1);
}
if (!TargetTriple.empty())
Mod->setTargetTriple(TargetTriple);
- EE = ExecutionEngine::create(MP, ForceInterpreter, &ErrorMsg, Fast);
- 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':
+ case '2': OLvl = CodeGenOpt::Default; break;
+ case '3': OLvl = CodeGenOpt::Aggressive; break;
+ }
+
+ // If we have a native target, initialize it to ensure it is linked in and
+ // usable by the JIT.
+ InitializeNativeTarget();
+
+ EE = ExecutionEngine::create(MP, ForceInterpreter, &ErrorMsg, OLvl);
+ 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(createMacOSJITEventListener());
+ EE->RegisterJITEventListener(createOProfileJITEventListener());
+
if (NoLazyCompilation)
EE->DisableLazyCompilation();
//
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;
}
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();
}
}