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https://github.com/c64scene-ar/llvm-6502.git
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For PR351:
* Place a try/catch block around the entire tool to Make sure std::string exceptions are caught and printed before exiting the tool. * Make sure we catch unhandled exceptions at the top level so that we don't abort with a useless message but indicate than an unhandled exception was generated. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19192 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
@ -70,102 +70,109 @@ QuietA("quiet", cl::desc("Alias for -q"), cl::aliasopt(Quiet));
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// main for opt
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//
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int main(int argc, char **argv) {
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cl::ParseCommandLineOptions(argc, argv,
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" llvm .bc -> .bc modular optimizer\n");
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sys::PrintStackTraceOnErrorSignal();
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try {
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cl::ParseCommandLineOptions(argc, argv,
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" llvm .bc -> .bc modular optimizer\n");
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sys::PrintStackTraceOnErrorSignal();
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// Allocate a full target machine description only if necessary...
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// FIXME: The choice of target should be controllable on the command line.
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std::auto_ptr<TargetMachine> target;
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// Allocate a full target machine description only if necessary...
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// FIXME: The choice of target should be controllable on the command line.
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std::auto_ptr<TargetMachine> target;
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TargetMachine* TM = NULL;
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std::string ErrorMessage;
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TargetMachine* TM = NULL;
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std::string ErrorMessage;
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// Load the input module...
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std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename, &ErrorMessage));
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if (M.get() == 0) {
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std::cerr << argv[0] << ": ";
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if (ErrorMessage.size())
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std::cerr << ErrorMessage << "\n";
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else
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std::cerr << "bytecode didn't read correctly.\n";
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return 1;
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}
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// Figure out what stream we are supposed to write to...
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std::ostream *Out = &std::cout; // Default to printing to stdout...
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if (OutputFilename != "-") {
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if (!Force && std::ifstream(OutputFilename.c_str())) {
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// If force is not specified, make sure not to overwrite a file!
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std::cerr << argv[0] << ": error opening '" << OutputFilename
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<< "': file exists!\n"
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<< "Use -f command line argument to force output\n";
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return 1;
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}
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Out = new std::ofstream(OutputFilename.c_str());
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if (!Out->good()) {
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std::cerr << argv[0] << ": error opening " << OutputFilename << "!\n";
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// Load the input module...
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std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename, &ErrorMessage));
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if (M.get() == 0) {
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std::cerr << argv[0] << ": ";
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if (ErrorMessage.size())
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std::cerr << ErrorMessage << "\n";
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else
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std::cerr << "bytecode didn't read correctly.\n";
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return 1;
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}
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// Make sure that the Output file gets unlinked from the disk if we get a
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// SIGINT
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sys::RemoveFileOnSignal(sys::Path(OutputFilename));
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}
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// Figure out what stream we are supposed to write to...
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std::ostream *Out = &std::cout; // Default to printing to stdout...
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if (OutputFilename != "-") {
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if (!Force && std::ifstream(OutputFilename.c_str())) {
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// If force is not specified, make sure not to overwrite a file!
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std::cerr << argv[0] << ": error opening '" << OutputFilename
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<< "': file exists!\n"
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<< "Use -f command line argument to force output\n";
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return 1;
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}
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Out = new std::ofstream(OutputFilename.c_str());
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// If the output is set to be emitted to standard out, and standard out is a
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// console, print out a warning message and refuse to do it. We don't impress
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// anyone by spewing tons of binary goo to a terminal.
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if (Out == &std::cout && isStandardOutAConsole() && !Force && !NoOutput
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&& !Quiet) {
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std::cerr << "WARNING: It looks like you're attempting to print out a "
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<< "bytecode file. I'm\ngoing to pretend you didn't ask me to do"
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<< " this (for your own good). If you\nREALLY want to taste LLVM"
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<< " bytecode first-hand, you can force output with the\n`-f'"
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<< " option.\n\n";
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NoOutput = true;
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}
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if (!Out->good()) {
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std::cerr << argv[0] << ": error opening " << OutputFilename << "!\n";
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return 1;
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}
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// Create a PassManager to hold and optimize the collection of passes we are
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// about to build...
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//
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PassManager Passes;
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// Make sure that the Output file gets unlinked from the disk if we get a
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// SIGINT
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sys::RemoveFileOnSignal(sys::Path(OutputFilename));
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}
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// Add an appropriate TargetData instance for this module...
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Passes.add(new TargetData("opt", M.get()));
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// If the output is set to be emitted to standard out, and standard out is a
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// console, print out a warning message and refuse to do it. We don't impress
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// anyone by spewing tons of binary goo to a terminal.
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if (Out == &std::cout && isStandardOutAConsole() && !Force && !NoOutput
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&& !Quiet) {
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std::cerr << "WARNING: It looks like you're attempting to print out a "
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<< "bytecode file. I'm\ngoing to pretend you didn't ask me to do"
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<< " this (for your own good). If you\nREALLY want to taste LLVM"
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<< " bytecode first-hand, you can force output with the\n`-f'"
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<< " option.\n\n";
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NoOutput = true;
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}
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// Create a new optimization pass for each one specified on the command line
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for (unsigned i = 0; i < OptimizationList.size(); ++i) {
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const PassInfo *Opt = OptimizationList[i];
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if (Opt->getNormalCtor())
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Passes.add(Opt->getNormalCtor()());
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else if (Opt->getTargetCtor()) {
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// Create a PassManager to hold and optimize the collection of passes we are
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// about to build...
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//
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PassManager Passes;
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// Add an appropriate TargetData instance for this module...
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Passes.add(new TargetData("opt", M.get()));
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// Create a new optimization pass for each one specified on the command line
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for (unsigned i = 0; i < OptimizationList.size(); ++i) {
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const PassInfo *Opt = OptimizationList[i];
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if (Opt->getNormalCtor())
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Passes.add(Opt->getNormalCtor()());
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else if (Opt->getTargetCtor()) {
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#if 0
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if (target.get() == NULL)
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target.reset(allocateSparcTargetMachine()); // FIXME: target option
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if (target.get() == NULL)
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target.reset(allocateSparcTargetMachine()); // FIXME: target option
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#endif
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assert(target.get() && "Could not allocate target machine!");
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Passes.add(Opt->getTargetCtor()(*target.get()));
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} else
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std::cerr << argv[0] << ": cannot create pass: " << Opt->getPassName()
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<< "\n";
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assert(target.get() && "Could not allocate target machine!");
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Passes.add(Opt->getTargetCtor()(*target.get()));
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} else
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std::cerr << argv[0] << ": cannot create pass: " << Opt->getPassName()
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<< "\n";
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if (PrintEachXForm)
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Passes.add(new PrintModulePass(&std::cerr));
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if (PrintEachXForm)
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Passes.add(new PrintModulePass(&std::cerr));
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}
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// Check that the module is well formed on completion of optimization
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if (!NoVerify)
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Passes.add(createVerifierPass());
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// Write bytecode out to disk or cout as the last step...
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if (!NoOutput)
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Passes.add(new WriteBytecodePass(Out, Out != &std::cout));
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// Now that we have all of the passes ready, run them.
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Passes.run(*M.get());
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return 0;
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} catch (const std::string& msg) {
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std::cerr << argv[0] << ": " << msg << "\n";
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} catch (...) {
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std::cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
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}
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// Check that the module is well formed on completion of optimization
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if (!NoVerify)
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Passes.add(createVerifierPass());
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// Write bytecode out to disk or cout as the last step...
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if (!NoOutput)
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Passes.add(new WriteBytecodePass(Out, Out != &std::cout));
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// Now that we have all of the passes ready, run them.
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Passes.run(*M.get());
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return 0;
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return 1;
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}
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