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//===- BugDriver.h - Top-Level BugPoint class -------------------*- C++ -*-===//
//
// This class contains all of the shared state and information that is used by
// the BugPoint tool to track down errors in optimizations. This class is the
// main driver class that invokes all sub-functionality.
//
//===----------------------------------------------------------------------===//
#ifndef BUGDRIVER_H
#define BUGDRIVER_H
#include <vector>
#include <string>
class PassInfo;
class Module;
class Function;
class BugDriver {
const std::string ToolName; // Name of bugpoint
Module *Program; // The raw program, linked together
std::vector<const PassInfo*> PassesToRun;
public:
BugDriver(const char *toolname) : ToolName(toolname), Program(0) {}
// Set up methods... these methods are used to copy information about the
// command line arguments into instance variables of BugDriver.
//
bool addSources(const std::vector<std::string> &FileNames);
template<class It>
void addPasses(It I, It E) { PassesToRun.insert(PassesToRun.end(), I, E); }
/// run - The top level method that is invoked after all of the instance
/// variables are set up from command line arguments.
///
bool run();
/// debugCrash - This method is called when some pass crashes on input. It
/// attempts to prune down the testcase to something reasonable, and figure
/// out exactly which pass is crashing.
///
bool debugCrash();
/// debugPassCrash - This method is called when the specified pass crashes on
/// Program as input. It tries to reduce the testcase to something that still
/// crashes, but it smaller.
///
bool debugPassCrash(const PassInfo *PI);
/// debugMiscompilation - This method is used when the passes selected are not
/// crashing, but the generated output is semantically different from the
/// input.
bool debugMiscompilation();
private:
/// ParseInputFile - Given a bytecode or assembly input filename, parse and
/// return it, or return null if not possible.
///
Module *ParseInputFile(const std::string &InputFilename) const;
/// removeFile - Delete the specified file
///
void removeFile(const std::string &Filename) const;
/// writeProgramToFile - This writes the current "Program" to the named
/// bytecode file. If an error occurs, true is returned.
///
bool writeProgramToFile(const std::string &Filename) const;
/// EmitProgressBytecode - This function is used to output the current Program
/// to a file named "bugpoing-ID.bc".
///
void EmitProgressBytecode(const PassInfo *Pass, const std::string &ID);
/// runPasses - Run the specified passes on Program, outputting a bytecode
/// file and writting 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 bytecode 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 runPasses(const std::vector<const PassInfo*> &PassesToRun,
std::string &OutputFilename, bool DeleteOutput = false) const;
/// runPasses - Just like the method above, but this just returns true or
/// false indicating whether or not the optimizer crashed on the specified
/// input (true = crashed).
///
bool runPasses(const std::vector<const PassInfo*> &PassesToRun,
bool DeleteOutput = true) const {
std::string Filename;
return runPasses(PassesToRun, Filename, DeleteOutput);
}
/// runPass - Run only the specified pass on the program.
bool runPass(const PassInfo *P, bool DeleteOutput = true) const {
return runPasses(std::vector<const PassInfo*>(1, P), DeleteOutput);
}
/// extractFunctionFromModule - This method is used to extract the specified
/// (non-external) function from the current program, slim down the module,
/// and then return it. This does not modify Program at all, it modifies a
/// copy, which it returns.
Module *extractFunctionFromModule(Function *F) const;
};
#endif
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