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Diffstat (limited to 'release_23/tools/bugpoint/OptimizerDriver.cpp')
| -rw-r--r-- | release_23/tools/bugpoint/OptimizerDriver.cpp | 259 |
1 files changed, 0 insertions, 259 deletions
diff --git a/release_23/tools/bugpoint/OptimizerDriver.cpp b/release_23/tools/bugpoint/OptimizerDriver.cpp deleted file mode 100644 index b08171bc5879..000000000000 --- a/release_23/tools/bugpoint/OptimizerDriver.cpp +++ /dev/null @@ -1,259 +0,0 @@ -//===- OptimizerDriver.cpp - Allow BugPoint to run passes safely ----------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// This file defines an interface that allows bugpoint to run various passes -// without the threat of a buggy pass corrupting bugpoint (of course, bugpoint -// may have its own bugs, but that's another story...). It achieves this by -// forking a copy of itself and having the child process do the optimizations. -// If this client dies, we can always fork a new one. :) -// -//===----------------------------------------------------------------------===// - -// Note: as a short term hack, the old Unix-specific code and platform- -// independent code co-exist via conditional compilation until it is verified -// that the new code works correctly on Unix. - -#include "BugDriver.h" -#include "llvm/Module.h" -#include "llvm/PassManager.h" -#include "llvm/Analysis/Verifier.h" -#include "llvm/Bitcode/ReaderWriter.h" -#include "llvm/Target/TargetData.h" -#include "llvm/Support/FileUtilities.h" -#include "llvm/Support/CommandLine.h" -#include "llvm/Support/Streams.h" -#include "llvm/System/Path.h" -#include "llvm/System/Program.h" -#include "llvm/Config/alloca.h" - -#define DONT_GET_PLUGIN_LOADER_OPTION -#include "llvm/Support/PluginLoader.h" - -#include <fstream> -using namespace llvm; - - -namespace { - // ChildOutput - This option captures the name of the child output file that - // is set up by the parent bugpoint process - cl::opt<std::string> ChildOutput("child-output", cl::ReallyHidden); - cl::opt<bool> UseValgrind("enable-valgrind", - cl::desc("Run optimizations through valgrind")); -} - -/// writeProgramToFile - This writes the current "Program" to the named bitcode -/// file. If an error occurs, true is returned. -/// -bool BugDriver::writeProgramToFile(const std::string &Filename, - Module *M) const { - std::ios::openmode io_mode = std::ios::out | std::ios::trunc | - std::ios::binary; - std::ofstream Out(Filename.c_str(), io_mode); - if (!Out.good()) return true; - - WriteBitcodeToFile(M ? M : Program, Out); - return false; -} - - -/// EmitProgressBitcode - This function is used to output the current Program -/// to a file named "bugpoint-ID.bc". -/// -void BugDriver::EmitProgressBitcode(const std::string &ID, bool NoFlyer) { - // Output the input to the current pass to a bitcode file, emit a message - // telling the user how to reproduce it: opt -foo blah.bc - // - std::string Filename = "bugpoint-" + ID + ".bc"; - if (writeProgramToFile(Filename)) { - cerr << "Error opening file '" << Filename << "' for writing!\n"; - return; - } - - cout << "Emitted bitcode to '" << Filename << "'\n"; - if (NoFlyer || PassesToRun.empty()) return; - cout << "\n*** You can reproduce the problem with: "; - cout << "opt " << Filename << " "; - cout << getPassesString(PassesToRun) << "\n"; -} - -int BugDriver::runPassesAsChild(const std::vector<const PassInfo*> &Passes) { - - std::ios::openmode io_mode = std::ios::out | std::ios::trunc | - std::ios::binary; - std::ofstream OutFile(ChildOutput.c_str(), io_mode); - if (!OutFile.good()) { - cerr << "Error opening bitcode file: " << ChildOutput << "\n"; - return 1; - } - - PassManager PM; - // Make sure that the appropriate target data is always used... - PM.add(new TargetData(Program)); - - for (unsigned i = 0, e = Passes.size(); i != e; ++i) { - if (Passes[i]->getNormalCtor()) - PM.add(Passes[i]->getNormalCtor()()); - else - cerr << "Cannot create pass yet: " << Passes[i]->getPassName() << "\n"; - } - // Check that the module is well formed on completion of optimization - PM.add(createVerifierPass()); - - // Write bitcode out to disk as the last step... - PM.add(CreateBitcodeWriterPass(OutFile)); - - // Run all queued passes. - PM.run(*Program); - - return 0; -} - -/// runPasses - Run the specified passes on Program, outputting a bitcode file -/// and writing the filename into OutputFile if successful. If the -/// optimizations fail for some reason (optimizer crashes), return true, -/// otherwise return false. If DeleteOutput is set to true, the bitcode is -/// deleted on success, and the filename string is undefined. This prints to -/// cout a single line message indicating whether compilation was successful or -/// failed. -/// -bool BugDriver::runPasses(const std::vector<const PassInfo*> &Passes, - std::string &OutputFilename, bool DeleteOutput, - bool Quiet, unsigned NumExtraArgs, - const char * const *ExtraArgs) const { - // setup the output file name - cout << std::flush; - sys::Path uniqueFilename("bugpoint-output.bc"); - std::string ErrMsg; - if (uniqueFilename.makeUnique(true, &ErrMsg)) { - cerr << getToolName() << ": Error making unique filename: " - << ErrMsg << "\n"; - return(1); - } - OutputFilename = uniqueFilename.toString(); - - // set up the input file name - sys::Path inputFilename("bugpoint-input.bc"); - if (inputFilename.makeUnique(true, &ErrMsg)) { - cerr << getToolName() << ": Error making unique filename: " - << ErrMsg << "\n"; - return(1); - } - std::ios::openmode io_mode = std::ios::out | std::ios::trunc | - std::ios::binary; - std::ofstream InFile(inputFilename.c_str(), io_mode); - if (!InFile.good()) { - cerr << "Error opening bitcode file: " << inputFilename << "\n"; - return(1); - } - WriteBitcodeToFile(Program, InFile); - InFile.close(); - - // setup the child process' arguments - const char** args = (const char**) - alloca(sizeof(const char*) * - (Passes.size()+13+2*PluginLoader::getNumPlugins()+NumExtraArgs)); - int n = 0; - sys::Path tool = sys::Program::FindProgramByName(ToolName); - if (UseValgrind) { - args[n++] = "valgrind"; - args[n++] = "--error-exitcode=1"; - args[n++] = "-q"; - args[n++] = tool.c_str(); - } else - args[n++] = ToolName.c_str(); - - args[n++] = "-as-child"; - args[n++] = "-child-output"; - args[n++] = OutputFilename.c_str(); - std::vector<std::string> pass_args; - for (unsigned i = 0, e = PluginLoader::getNumPlugins(); i != e; ++i) { - pass_args.push_back( std::string("-load")); - pass_args.push_back( PluginLoader::getPlugin(i)); - } - for (std::vector<const PassInfo*>::const_iterator I = Passes.begin(), - E = Passes.end(); I != E; ++I ) - pass_args.push_back( std::string("-") + (*I)->getPassArgument() ); - for (std::vector<std::string>::const_iterator I = pass_args.begin(), - E = pass_args.end(); I != E; ++I ) - args[n++] = I->c_str(); - args[n++] = inputFilename.c_str(); - for (unsigned i = 0; i < NumExtraArgs; ++i) - args[n++] = *ExtraArgs; - args[n++] = 0; - - sys::Path prog; - if (UseValgrind) - prog = sys::Program::FindProgramByName("valgrind"); - else - prog = tool; - int result = sys::Program::ExecuteAndWait(prog, args, 0, 0, - Timeout, MemoryLimit, &ErrMsg); - - // If we are supposed to delete the bitcode file or if the passes crashed, - // remove it now. This may fail if the file was never created, but that's ok. - if (DeleteOutput || result != 0) - sys::Path(OutputFilename).eraseFromDisk(); - - // Remove the temporary input file as well - inputFilename.eraseFromDisk(); - - if (!Quiet) { - if (result == 0) - cout << "Success!\n"; - else if (result > 0) - cout << "Exited with error code '" << result << "'\n"; - else if (result < 0) { - if (result == -1) - cout << "Execute failed: " << ErrMsg << "\n"; - else - cout << "Crashed with signal #" << abs(result) << "\n"; - } - if (result & 0x01000000) - cout << "Dumped core\n"; - } - - // Was the child successful? - return result != 0; -} - - -/// runPassesOn - Carefully run the specified set of pass on the specified -/// module, returning the transformed module on success, or a null pointer on -/// failure. -Module *BugDriver::runPassesOn(Module *M, - const std::vector<const PassInfo*> &Passes, - bool AutoDebugCrashes, unsigned NumExtraArgs, - const char * const *ExtraArgs) { - Module *OldProgram = swapProgramIn(M); - std::string BitcodeResult; - if (runPasses(Passes, BitcodeResult, false/*delete*/, true/*quiet*/, - NumExtraArgs, ExtraArgs)) { - if (AutoDebugCrashes) { - cerr << " Error running this sequence of passes" - << " on the input program!\n"; - delete OldProgram; - EmitProgressBitcode("pass-error", false); - exit(debugOptimizerCrash()); - } - swapProgramIn(OldProgram); - return 0; - } - - // Restore the current program. - swapProgramIn(OldProgram); - - Module *Ret = ParseInputFile(BitcodeResult); - if (Ret == 0) { - cerr << getToolName() << ": Error reading bitcode file '" - << BitcodeResult << "'!\n"; - exit(1); - } - sys::Path(BitcodeResult).eraseFromDisk(); // No longer need the file on disk - return Ret; -} |