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Diffstat (limited to 'contrib/llvm/tools/bugpoint/OptimizerDriver.cpp')
-rw-r--r-- | contrib/llvm/tools/bugpoint/OptimizerDriver.cpp | 260 |
1 files changed, 0 insertions, 260 deletions
diff --git a/contrib/llvm/tools/bugpoint/OptimizerDriver.cpp b/contrib/llvm/tools/bugpoint/OptimizerDriver.cpp deleted file mode 100644 index 3600ca6..0000000 --- a/contrib/llvm/tools/bugpoint/OptimizerDriver.cpp +++ /dev/null @@ -1,260 +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/SystemUtils.h" -#include "llvm/Support/Debug.h" -#include "llvm/Support/raw_ostream.h" -#include "llvm/System/Path.h" -#include "llvm/System/Program.h" - -#define DONT_GET_PLUGIN_LOADER_OPTION -#include "llvm/Support/PluginLoader.h" - -#include <fstream> -using namespace llvm; - -namespace llvm { - extern cl::opt<std::string> OutputPrefix; -} - -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); -} - -/// 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, - const Module *M) const { - std::string ErrInfo; - tool_output_file Out(Filename.c_str(), ErrInfo, - raw_fd_ostream::F_Binary); - if (ErrInfo.empty()) { - WriteBitcodeToFile(M, Out.os()); - Out.os().close(); - if (!Out.os().has_error()) { - Out.keep(); - return false; - } - } - Out.os().clear_error(); - return true; -} - - -/// EmitProgressBitcode - This function is used to output the current Program -/// to a file named "bugpoint-ID.bc". -/// -void BugDriver::EmitProgressBitcode(const Module *M, - const std::string &ID, - bool NoFlyer) const { - // 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 = OutputPrefix + "-" + ID + ".bc"; - if (writeProgramToFile(Filename, M)) { - errs() << "Error opening file '" << Filename << "' for writing!\n"; - return; - } - - outs() << "Emitted bitcode to '" << Filename << "'\n"; - if (NoFlyer || PassesToRun.empty()) return; - outs() << "\n*** You can reproduce the problem with: "; - if (UseValgrind) outs() << "valgrind "; - outs() << "opt " << Filename << " "; - outs() << getPassesString(PassesToRun) << "\n"; -} - -cl::opt<bool> SilencePasses("silence-passes", cl::desc("Suppress output of running passes (both stdout and stderr)")); - -static cl::list<std::string> OptArgs("opt-args", cl::Positional, - cl::desc("<opt arguments>..."), - cl::ZeroOrMore, cl::PositionalEatsArgs); - -/// 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 -/// outs() a single line message indicating whether compilation was successful -/// or failed. -/// -bool BugDriver::runPasses(Module *Program, - const std::vector<std::string> &Passes, - std::string &OutputFilename, bool DeleteOutput, - bool Quiet, unsigned NumExtraArgs, - const char * const *ExtraArgs) const { - // setup the output file name - outs().flush(); - sys::Path uniqueFilename(OutputPrefix + "-output.bc"); - std::string ErrMsg; - if (uniqueFilename.makeUnique(true, &ErrMsg)) { - errs() << getToolName() << ": Error making unique filename: " - << ErrMsg << "\n"; - return(1); - } - OutputFilename = uniqueFilename.str(); - - // set up the input file name - sys::Path inputFilename(OutputPrefix + "-input.bc"); - if (inputFilename.makeUnique(true, &ErrMsg)) { - errs() << getToolName() << ": Error making unique filename: " - << ErrMsg << "\n"; - return(1); - } - - std::string ErrInfo; - tool_output_file InFile(inputFilename.c_str(), ErrInfo, - raw_fd_ostream::F_Binary); - - - if (!ErrInfo.empty()) { - errs() << "Error opening bitcode file: " << inputFilename.str() << "\n"; - return 1; - } - WriteBitcodeToFile(Program, InFile.os()); - InFile.os().close(); - if (InFile.os().has_error()) { - errs() << "Error writing bitcode file: " << inputFilename.str() << "\n"; - InFile.os().clear_error(); - return 1; - } - InFile.keep(); - - // setup the child process' arguments - SmallVector<const char*, 8> Args; - sys::Path tool = FindExecutable("opt", getToolName(), (void*)"opt"); - std::string Opt = tool.str(); - if (UseValgrind) { - Args.push_back("valgrind"); - Args.push_back("--error-exitcode=1"); - Args.push_back("-q"); - Args.push_back(tool.c_str()); - } else - Args.push_back(Opt.c_str()); - - Args.push_back("-o"); - Args.push_back(OutputFilename.c_str()); - for (unsigned i = 0, e = OptArgs.size(); i != e; ++i) - Args.push_back(OptArgs[i].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<std::string>::const_iterator I = Passes.begin(), - E = Passes.end(); I != E; ++I ) - pass_args.push_back( std::string("-") + (*I) ); - for (std::vector<std::string>::const_iterator I = pass_args.begin(), - E = pass_args.end(); I != E; ++I ) - Args.push_back(I->c_str()); - Args.push_back(inputFilename.c_str()); - for (unsigned i = 0; i < NumExtraArgs; ++i) - Args.push_back(*ExtraArgs); - Args.push_back(0); - - DEBUG(errs() << "\nAbout to run:\t"; - for (unsigned i = 0, e = Args.size()-1; i != e; ++i) - errs() << " " << Args[i]; - errs() << "\n"; - ); - - sys::Path prog; - if (UseValgrind) - prog = sys::Program::FindProgramByName("valgrind"); - else - prog = tool; - - // Redirect stdout and stderr to nowhere if SilencePasses is given - sys::Path Nowhere; - const sys::Path *Redirects[3] = {0, &Nowhere, &Nowhere}; - - int result = sys::Program::ExecuteAndWait(prog, Args.data(), 0, - (SilencePasses ? Redirects : 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) - outs() << "Success!\n"; - else if (result > 0) - outs() << "Exited with error code '" << result << "'\n"; - else if (result < 0) { - if (result == -1) - outs() << "Execute failed: " << ErrMsg << "\n"; - else - outs() << "Crashed with signal #" << abs(result) << "\n"; - } - if (result & 0x01000000) - outs() << "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<std::string> &Passes, - bool AutoDebugCrashes, unsigned NumExtraArgs, - const char * const *ExtraArgs) { - std::string BitcodeResult; - if (runPasses(M, Passes, BitcodeResult, false/*delete*/, true/*quiet*/, - NumExtraArgs, ExtraArgs)) { - if (AutoDebugCrashes) { - errs() << " Error running this sequence of passes" - << " on the input program!\n"; - delete swapProgramIn(M); - EmitProgressBitcode(M, "pass-error", false); - exit(debugOptimizerCrash()); - } - return 0; - } - - Module *Ret = ParseInputFile(BitcodeResult, Context); - if (Ret == 0) { - errs() << getToolName() << ": Error reading bitcode file '" - << BitcodeResult << "'!\n"; - exit(1); - } - sys::Path(BitcodeResult).eraseFromDisk(); // No longer need the file on disk - return Ret; -} |