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narrowing, no matter what. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7596 91177308-0d34-0410-b5e6-96231b3b80d8
197 lines
7.5 KiB
C++
197 lines
7.5 KiB
C++
//===- BugDriver.h - Top-Level BugPoint class -------------------*- C++ -*-===//
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//
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// This class contains all of the shared state and information that is used by
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// the BugPoint tool to track down errors in optimizations. This class is the
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// main driver class that invokes all sub-functionality.
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//
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//===----------------------------------------------------------------------===//
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#ifndef BUGDRIVER_H
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#define BUGDRIVER_H
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#include <vector>
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#include <string>
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class PassInfo;
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class Module;
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class Function;
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class AbstractInterpreter;
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class Instruction;
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class DebugCrashes;
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class ReduceMiscompilingPasses;
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class ReduceMiscompilingFunctions;
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class ReduceCrashingFunctions;
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class ReduceCrashingBlocks;
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class CBE;
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class GCC;
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extern bool DisableSimplifyCFG;
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class BugDriver {
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const std::string ToolName; // Name of bugpoint
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std::string ReferenceOutputFile; // Name of `good' output file
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Module *Program; // The raw program, linked together
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std::vector<const PassInfo*> PassesToRun;
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AbstractInterpreter *Interpreter; // How to run the program
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CBE *cbe;
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GCC *gcc;
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// FIXME: sort out public/private distinctions...
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friend class DebugCrashes;
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friend class ReduceMiscompilingPasses;
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friend class ReduceMiscompilingFunctions;
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friend class ReduceMisCodegenFunctions;
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friend class ReduceCrashingFunctions;
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friend class ReduceCrashingBlocks;
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public:
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BugDriver(const char *toolname);
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const std::string &getToolName() const { return ToolName; }
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// Set up methods... these methods are used to copy information about the
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// command line arguments into instance variables of BugDriver.
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//
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bool addSources(const std::vector<std::string> &FileNames);
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template<class It>
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void addPasses(It I, It E) { PassesToRun.insert(PassesToRun.end(), I, E); }
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/// run - The top level method that is invoked after all of the instance
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/// variables are set up from command line arguments.
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///
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bool run();
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/// debugCrash - This method is called when some pass crashes on input. It
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/// attempts to prune down the testcase to something reasonable, and figure
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/// out exactly which pass is crashing.
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///
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bool debugCrash();
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/// debugMiscompilation - This method is used when the passes selected are not
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/// crashing, but the generated output is semantically different from the
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/// input.
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bool debugMiscompilation();
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/// debugPassMiscompilation - This method is called when the specified pass
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/// miscompiles Program as input. It tries to reduce the testcase to
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/// something that smaller that still miscompiles the program.
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/// ReferenceOutput contains the filename of the file containing the output we
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/// are to match.
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///
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bool debugPassMiscompilation(const PassInfo *ThePass,
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const std::string &ReferenceOutput);
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/// compileSharedObject - This method creates a SharedObject from a given
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/// BytecodeFile for debugging a code generator.
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int compileSharedObject(const std::string &BytecodeFile,
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std::string &SharedObject);
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/// debugCodeGenerator - This method narrows down a module to a function or
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/// set of functions, using the CBE as a ``safe'' code generator for other
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/// functions that are not under consideration.
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bool debugCodeGenerator();
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/// isExecutingJIT - Returns true if bugpoint is currently testing the JIT
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///
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bool isExecutingJIT();
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private:
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/// ParseInputFile - Given a bytecode or assembly input filename, parse and
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/// return it, or return null if not possible.
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///
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Module *ParseInputFile(const std::string &InputFilename) const;
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/// writeProgramToFile - This writes the current "Program" to the named
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/// bytecode file. If an error occurs, true is returned.
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///
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bool writeProgramToFile(const std::string &Filename, Module *M = 0) const;
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/// EmitProgressBytecode - This function is used to output the current Program
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/// to a file named "bugpoing-ID.bc".
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///
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void EmitProgressBytecode(const std::string &ID, bool NoFlyer = false);
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/// runPasses - Run the specified passes on Program, outputting a bytecode
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/// file and writting the filename into OutputFile if successful. If the
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/// optimizations fail for some reason (optimizer crashes), return true,
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/// otherwise return false. If DeleteOutput is set to true, the bytecode is
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/// deleted on success, and the filename string is undefined. This prints to
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/// cout a single line message indicating whether compilation was successful
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/// or failed, unless Quiet is set.
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///
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bool runPasses(const std::vector<const PassInfo*> &PassesToRun,
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std::string &OutputFilename, bool DeleteOutput = false,
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bool Quiet = false) const;
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/// runPasses - Just like the method above, but this just returns true or
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/// false indicating whether or not the optimizer crashed on the specified
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/// input (true = crashed).
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///
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bool runPasses(const std::vector<const PassInfo*> &PassesToRun,
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bool DeleteOutput = true) const {
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std::string Filename;
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return runPasses(PassesToRun, Filename, DeleteOutput);
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}
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/// PrintFunctionList - prints out list of problematic functions
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///
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static void PrintFunctionList(const std::vector<Function*> &Funcs);
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/// deleteInstructionFromProgram - This method clones the current Program and
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/// deletes the specified instruction from the cloned module. It then runs a
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/// series of cleanup passes (ADCE and SimplifyCFG) to eliminate any code
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/// which depends on the value. The modified module is then returned.
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///
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Module *deleteInstructionFromProgram(Instruction *I, unsigned Simp) const;
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/// performFinalCleanups - This method clones the current Program and performs
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/// a series of cleanups intended to get rid of extra cruft on the module
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/// before handing it to the user... if the module parameter is specified, it
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/// operates directly on the specified Module, modifying it in place.
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///
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Module *performFinalCleanups(Module *M = 0) const;
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/// initializeExecutionEnvironment - This method is used to set up the
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/// environment for executing LLVM programs.
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///
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bool initializeExecutionEnvironment();
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/// executeProgram - This method runs "Program", capturing the output of the
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/// program to a file, returning the filename of the file. A recommended
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/// filename may be optionally specified.
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///
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std::string executeProgram(std::string RequestedOutputFilename = "",
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std::string Bytecode = "",
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std::string SharedObject = "",
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AbstractInterpreter *AI = 0);
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/// executeProgramWithCBE - Used to create reference output with the C
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/// backend, if reference output is not provided.
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std::string executeProgramWithCBE(std::string RequestedOutputFilename = "",
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std::string Bytecode = "",
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std::string SharedObject = "");
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/// diffProgram - This method executes the specified module and diffs the
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/// output against the file specified by ReferenceOutputFile. If the output
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/// is different, true is returned.
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///
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bool diffProgram(const std::string &BytecodeFile = "",
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const std::string &SharedObject = "",
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bool RemoveBytecode = false);
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};
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/// getPassesString - Turn a list of passes into a string which indicates the
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/// command line options that must be passed to add the passes.
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///
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std::string getPassesString(const std::vector<const PassInfo*> &Passes);
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// DeleteFunctionBody - "Remove" the function by deleting all of it's basic
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// blocks, making it external.
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//
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void DeleteFunctionBody(Function *F);
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#endif
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