//
// 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.
//
//===----------------------------------------------------------------------===//
//
namespace {
cl::opt<std::string>
- InputFile(cl::desc("<input bytecode>"), cl::Positional, cl::init("-"));
+ InputFile(cl::desc("<input bitcode>"), cl::Positional, cl::init("-"));
cl::list<std::string>
InputArgv(cl::ConsumeAfter, cl::desc("<program arguments>..."));
cl::opt<bool>
DisableCoreFiles("disable-core-files", cl::Hidden,
cl::desc("Disable emission of core files if possible"));
+
+ cl::opt<bool>
+ NoLazyCompilation("disable-lazy-compilation",
+ cl::desc("Disable JIT lazy compilation"),
+ cl::init(false));
}
static ExecutionEngine *EE = 0;
int main(int argc, char **argv, char * const *envp) {
atexit(do_shutdown); // Call llvm_shutdown() on exit.
cl::ParseCommandLineOptions(argc, argv,
- " llvm interpreter & dynamic compiler\n");
+ "llvm interpreter & dynamic compiler\n");
sys::PrintStackTraceOnErrorSignal();
// 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;
- if (MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFile,&ErrorMsg)){
+ ModuleProvider *MP = NULL;
+ if (MemoryBuffer *Buffer = MemoryBuffer::getFileOrSTDIN(InputFile,&ErrorMsg)) {
MP = getBitcodeModuleProvider(Buffer, &ErrorMsg);
if (!MP) delete Buffer;
}
}
// Get the module as the MP could go away once EE takes over.
- Module *Mod = MP->getModule();
+ 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 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";
exit(1);
}
+ if (NoLazyCompilation)
+ EE->DisableLazyCompilation();
+
// If the user specifically requested an argv[0] to pass into the program,
// do it now.
if (!FakeArgv0.empty()) {
// using the contents of Args to determine argc & argv, and the contents of
// EnvVars to determine envp.
//
- Function *Fn = Mod->getFunction("main");
- if (!Fn) {
+ Function *MainFn = Mod->getFunction("main");
+ if (!MainFn) {
std::cerr << "'main' function not found in module.\n";
return -1;
}
// 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 != MainFn && !Fn->isDeclaration())
+ EE->getPointerToFunction(Fn);
+ }
+ }
+
// Run main.
- int Result = EE->runFunctionAsMain(Fn, InputArgv, envp);
+ int Result = EE->runFunctionAsMain(MainFn, InputArgv, envp);
// Run static destructors.
EE->runStaticConstructorsDestructors(true);