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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
@@ -63,110 +63,117 @@ GetFileNameRoot(const std::string &InputFilename) {
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// main - Entry point for the llc compiler.
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//
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int main(int argc, char **argv) {
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cl::ParseCommandLineOptions(argc, argv, " llvm system compiler\n");
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sys::PrintStackTraceOnErrorSignal();
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try {
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cl::ParseCommandLineOptions(argc, argv, " llvm system compiler\n");
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sys::PrintStackTraceOnErrorSignal();
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// Load the module to be compiled...
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std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename));
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if (M.get() == 0) {
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std::cerr << argv[0] << ": bytecode didn't read correctly.\n";
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return 1;
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}
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Module &mod = *M.get();
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// Allocate target machine. First, check whether the user has
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// explicitly specified an architecture to compile for.
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TargetMachine* (*TargetMachineAllocator)(const Module&,
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IntrinsicLowering *) = 0;
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if (MArch == 0) {
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std::string Err;
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MArch = TargetMachineRegistry::getClosestStaticTargetForModule(mod, Err);
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if (MArch == 0) {
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std::cerr << argv[0] << ": error auto-selecting target for module '"
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<< Err << "'. Please use the -march option to explicitly "
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<< "pick a target.\n";
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// Load the module to be compiled...
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std::auto_ptr<Module> M(ParseBytecodeFile(InputFilename));
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if (M.get() == 0) {
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std::cerr << argv[0] << ": bytecode didn't read correctly.\n";
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return 1;
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}
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}
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Module &mod = *M.get();
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std::auto_ptr<TargetMachine> target(MArch->CtorFn(mod, 0));
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assert(target.get() && "Could not allocate target machine!");
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TargetMachine &Target = *target.get();
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const TargetData &TD = Target.getTargetData();
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// Build up all of the passes that we want to do to the module...
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PassManager Passes;
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Passes.add(new TargetData("llc", TD.isLittleEndian(), TD.getPointerSize(),
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TD.getPointerAlignment(), TD.getDoubleAlignment()));
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// Figure out where we are going to send the output...
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std::ostream *Out = 0;
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if (OutputFilename != "") {
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if (OutputFilename != "-") {
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// Specified an output filename?
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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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// Allocate target machine. First, check whether the user has
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// explicitly specified an architecture to compile for.
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TargetMachine* (*TargetMachineAllocator)(const Module&,
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IntrinsicLowering *) = 0;
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if (MArch == 0) {
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std::string Err;
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MArch = TargetMachineRegistry::getClosestStaticTargetForModule(mod, Err);
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if (MArch == 0) {
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std::cerr << argv[0] << ": error auto-selecting target for module '"
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<< Err << "'. Please use the -march option to explicitly "
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<< "pick a target.\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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// Make sure that the Out 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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} else {
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Out = &std::cout;
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}
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} else {
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if (InputFilename == "-") {
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OutputFilename = "-";
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Out = &std::cout;
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std::auto_ptr<TargetMachine> target(MArch->CtorFn(mod, 0));
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assert(target.get() && "Could not allocate target machine!");
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TargetMachine &Target = *target.get();
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const TargetData &TD = Target.getTargetData();
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// Build up all of the passes that we want to do to the module...
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PassManager Passes;
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Passes.add(new TargetData("llc", TD.isLittleEndian(), TD.getPointerSize(),
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TD.getPointerAlignment(), TD.getDoubleAlignment()));
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// Figure out where we are going to send the output...
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std::ostream *Out = 0;
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if (OutputFilename != "") {
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if (OutputFilename != "-") {
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// Specified an output filename?
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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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// Make sure that the Out 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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} else {
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Out = &std::cout;
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}
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} else {
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OutputFilename = GetFileNameRoot(InputFilename);
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if (InputFilename == "-") {
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OutputFilename = "-";
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Out = &std::cout;
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} else {
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OutputFilename = GetFileNameRoot(InputFilename);
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if (MArch->Name[0] != 'c' || MArch->Name[1] != 0) // not CBE
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OutputFilename += ".s";
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else
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OutputFilename += ".cbe.c";
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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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if (MArch->Name[0] != 'c' || MArch->Name[1] != 0) // not CBE
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OutputFilename += ".s";
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else
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OutputFilename += ".cbe.c";
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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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delete Out;
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return 1;
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}
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// Make sure that the Out 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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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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delete Out;
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return 1;
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}
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// Make sure that the Out 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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}
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// Ask the target to add backend passes as necessary
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if (Target.addPassesToEmitAssembly(Passes, *Out)) {
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std::cerr << argv[0] << ": target '" << Target.getName()
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<< "' does not support static compilation!\n";
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// Ask the target to add backend passes as necessary
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if (Target.addPassesToEmitAssembly(Passes, *Out)) {
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std::cerr << argv[0] << ": target '" << Target.getName()
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<< "' does not support static compilation!\n";
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if (Out != &std::cout) delete Out;
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// And the Out file is empty and useless, so remove it now.
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std::remove(OutputFilename.c_str());
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return 1;
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} else {
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// Run our queue of passes all at once now, efficiently.
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Passes.run(*M.get());
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}
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// Delete the ostream if it's not a stdout stream
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if (Out != &std::cout) delete Out;
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// And the Out file is empty and useless, so remove it now.
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std::remove(OutputFilename.c_str());
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return 1;
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} else {
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// Run our queue of passes all at once now, efficiently.
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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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// Delete the ostream if it's not a stdout stream
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if (Out != &std::cout) delete Out;
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return 0;
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return 1;
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}
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