X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=tools%2Fbugpoint%2FBugDriver.h;h=20efff3fda5f7e7e9599ca25af901010b8938232;hb=18d705086f7f3f0d460aae88b26daecdae5f634e;hp=a5f1e3f356382420e9059b1bd0de8195f93bfe90;hpb=06905db7d2a2b83c1b3236d5552629ada2d8d56d;p=oota-llvm.git diff --git a/tools/bugpoint/BugDriver.h b/tools/bugpoint/BugDriver.h index a5f1e3f3563..20efff3fda5 100644 --- a/tools/bugpoint/BugDriver.h +++ b/tools/bugpoint/BugDriver.h @@ -1,10 +1,10 @@ //===- BugDriver.h - Top-Level BugPoint class -------------------*- C++ -*-===// -// +// // The LLVM Compiler Infrastructure // -// This file was developed by the LLVM research group and is distributed under -// the University of Illinois Open Source License. See LICENSE.TXT for details. -// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// //===----------------------------------------------------------------------===// // // This class contains all of the shared state and information that is used by @@ -13,81 +13,98 @@ // //===----------------------------------------------------------------------===// -#ifndef BUGDRIVER_H -#define BUGDRIVER_H +#ifndef LLVM_TOOLS_BUGPOINT_BUGDRIVER_H +#define LLVM_TOOLS_BUGPOINT_BUGDRIVER_H -#include +#include "llvm/IR/ValueMap.h" +#include "llvm/Transforms/Utils/ValueMapper.h" +#include #include +#include namespace llvm { +class Value; class PassInfo; class Module; +class GlobalVariable; class Function; +class BasicBlock; class AbstractInterpreter; class Instruction; +class LLVMContext; class DebugCrashes; -class ReduceMiscompilingPasses; -class ReduceMiscompilingFunctions; -class ReduceCrashingFunctions; -class ReduceCrashingBlocks; -class CBE; -class GCC; +class CC; extern bool DisableSimplifyCFG; +/// BugpointIsInterrupted - Set to true when the user presses ctrl-c. +/// +extern bool BugpointIsInterrupted; + class BugDriver { - const std::string ToolName; // Name of bugpoint + LLVMContext& Context; + const char *ToolName; // argv[0] of bugpoint std::string ReferenceOutputFile; // Name of `good' output file Module *Program; // The raw program, linked together - std::vector PassesToRun; + std::vector PassesToRun; AbstractInterpreter *Interpreter; // How to run the program - CBE *cbe; - GCC *gcc; + AbstractInterpreter *SafeInterpreter; // To generate reference output, etc. + CC *cc; + bool run_find_bugs; + unsigned Timeout; + unsigned MemoryLimit; + bool UseValgrind; // FIXME: sort out public/private distinctions... friend class ReducePassList; - friend class ReduceMiscompilingPasses; - friend class ReduceMiscompilingFunctions; friend class ReduceMisCodegenFunctions; public: - BugDriver(const char *toolname); + BugDriver(const char *toolname, bool find_bugs, + unsigned timeout, unsigned memlimit, bool use_valgrind, + LLVMContext& ctxt); + ~BugDriver(); - const std::string &getToolName() const { return ToolName; } + const char *getToolName() const { return ToolName; } + + LLVMContext& getContext() const { return Context; } // 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 &FileNames); - template - void addPasses(It I, It E) { PassesToRun.insert(PassesToRun.end(), I, E); } - void setPassesToRun(const std::vector &PTR) { + void addPass(std::string p) { PassesToRun.push_back(p); } + void setPassesToRun(const std::vector &PTR) { PassesToRun = PTR; } + const std::vector &getPassesToRun() const { + return PassesToRun; + } /// run - The top level method that is invoked after all of the instance - /// variables are set up from command line arguments. + /// variables are set up from command line arguments. The \p as_child argument + /// indicates whether the driver is to run in parent mode or child mode. /// - bool run(); + bool run(std::string &ErrMsg); /// debugOptimizerCrash - This method is called when some optimizer pass /// crashes on input. It attempts to prune down the testcase to something /// reasonable, and figure out exactly which pass is crashing. /// - bool debugOptimizerCrash(); - + bool debugOptimizerCrash(const std::string &ID = "passes"); + /// debugCodeGeneratorCrash - This method is called when the code generator /// crashes on an input. It attempts to reduce the input as much as possible /// while still causing the code generator to crash. - bool debugCodeGeneratorCrash(); + bool debugCodeGeneratorCrash(std::string &Error); /// debugMiscompilation - This method is used when the passes selected are not /// crashing, but the generated output is semantically different from the /// input. - bool debugMiscompilation(); + void debugMiscompilation(std::string *Error); /// debugPassMiscompilation - This method is called when the specified pass /// miscompiles Program as input. It tries to reduce the testcase to @@ -96,17 +113,18 @@ public: /// are to match. /// bool debugPassMiscompilation(const PassInfo *ThePass, - const std::string &ReferenceOutput); + const std::string &ReferenceOutput); /// compileSharedObject - This method creates a SharedObject from a given - /// BytecodeFile for debugging a code generator. + /// BitcodeFile for debugging a code generator. /// - std::string compileSharedObject(const std::string &BytecodeFile); + std::string compileSharedObject(const std::string &BitcodeFile, + std::string &Error); /// debugCodeGenerator - This method narrows down a module to a function or /// set of functions, using the CBE as a ``safe'' code generator for other /// functions that are not under consideration. - bool debugCodeGenerator(); + bool debugCodeGenerator(std::string *Error); /// isExecutingJIT - Returns true if bugpoint is currently testing the JIT /// @@ -114,120 +132,211 @@ public: /// runPasses - Run all of the passes in the "PassesToRun" list, discard the /// output, and return true if any of the passes crashed. - bool runPasses(Module *M = 0) { - if (M == 0) M = Program; - std::swap(M, Program); - bool Result = runPasses(PassesToRun); - std::swap(M, Program); - return Result; + bool runPasses(Module *M) const { + return runPasses(M, PassesToRun); + } + + Module *getProgram() const { return Program; } + + /// swapProgramIn - Set the current module to the specified module, returning + /// the old one. + Module *swapProgramIn(Module *M) { + Module *OldProgram = Program; + Program = M; + return OldProgram; } - const Module *getProgram() const { return Program; } + AbstractInterpreter *switchToSafeInterpreter() { + AbstractInterpreter *Old = Interpreter; + Interpreter = (AbstractInterpreter*)SafeInterpreter; + return Old; + } + + void switchToInterpreter(AbstractInterpreter *AI) { + Interpreter = AI; + } /// setNewProgram - If we reduce or update the program somehow, call this /// method to update bugdriver with it. This deletes the old module and sets /// the specified one as the current program. void setNewProgram(Module *M); -private: - /// ParseInputFile - Given a bytecode or assembly input filename, parse and - /// return it, or return null if not possible. + /// compileProgram - Try to compile the specified module, returning false and + /// setting Error if an error occurs. This is used for code generation + /// crash testing. /// - Module *ParseInputFile(const std::string &InputFilename) const; + void compileProgram(Module *M, std::string *Error) const; - /// writeProgramToFile - This writes the current "Program" to the named - /// bytecode file. If an error occurs, true is returned. + /// executeProgram - This method runs "Program", capturing the output of the + /// program to a file. A recommended filename may be optionally specified. + /// + std::string executeProgram(const Module *Program, + std::string OutputFilename, + std::string Bitcode, + const std::string &SharedObjects, + AbstractInterpreter *AI, + std::string *Error) const; + + /// executeProgramSafely - Used to create reference output with the "safe" + /// backend, if reference output is not provided. If there is a problem with + /// the code generator (e.g., llc crashes), this will return false and set + /// Error. /// - bool writeProgramToFile(const std::string &Filename, Module *M = 0) const; + std::string executeProgramSafely(const Module *Program, + std::string OutputFile, + std::string *Error) const; + + /// createReferenceFile - calls compileProgram and then records the output + /// into ReferenceOutputFile. Returns true if reference file created, false + /// otherwise. Note: initializeExecutionEnvironment should be called BEFORE + /// this function. + /// + bool createReferenceFile(Module *M, const std::string &Filename + = "bugpoint.reference.out-%%%%%%%"); + /// diffProgram - This method executes the specified module and diffs the + /// output against the file specified by ReferenceOutputFile. If the output + /// is different, 1 is returned. If there is a problem with the code + /// generator (e.g., llc crashes), this will return -1 and set Error. + /// + bool diffProgram(const Module *Program, + const std::string &BitcodeFile = "", + const std::string &SharedObj = "", + bool RemoveBitcode = false, + std::string *Error = nullptr) const; + + /// EmitProgressBitcode - This function is used to output M to a file named + /// "bugpoint-ID.bc". + /// + void EmitProgressBitcode(const Module *M, const std::string &ID, + bool NoFlyer = false) const; - /// EmitProgressBytecode - This function is used to output the current Program - /// to a file named "bugpoint-ID.bc". + /// This method clones the current Program and deletes the specified + /// instruction from the cloned module. It then runs a series of cleanup + /// passes (ADCE and SimplifyCFG) to eliminate any code which depends on the + /// value. The modified module is then returned. /// - void EmitProgressBytecode(const std::string &ID, bool NoFlyer = false); - - /// runPasses - Run the specified passes on Program, outputting a bytecode + std::unique_ptr deleteInstructionFromProgram(const Instruction *I, + unsigned Simp); + + /// This method clones the current Program and performs a series of cleanups + /// intended to get rid of extra cruft on the module. If the + /// MayModifySemantics argument is true, then the cleanups is allowed to + /// modify how the code behaves. + /// + std::unique_ptr performFinalCleanups(Module *M, + bool MayModifySemantics = false); + + /// Given a module, extract up to one loop from it into a new function. This + /// returns null if there are no extractable loops in the program or if the + /// loop extractor crashes. + std::unique_ptr extractLoop(Module *M); + + /// Extract all but the specified basic blocks into their own functions. The + /// only detail is that M is actually a module cloned from the one the BBs are + /// in, so some mapping needs to be performed. If this operation fails for + /// some reason (ie the implementation is buggy), this function should return + /// null, otherwise it returns a new Module. + std::unique_ptr + extractMappedBlocksFromModule(const std::vector &BBs, + Module *M); + + /// Carefully run the specified set of pass on the specified/ module, + /// returning the transformed module on success, or a null pointer on failure. + /// If AutoDebugCrashes is set to true, then bugpoint will automatically + /// attempt to track down a crashing pass if one exists, and this method will + /// never return null. + std::unique_ptr runPassesOn(Module *M, + const std::vector &Passes, + bool AutoDebugCrashes = false, + unsigned NumExtraArgs = 0, + const char *const *ExtraArgs = nullptr); + + /// runPasses - Run the specified passes on Program, outputting a bitcode /// 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 + /// 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, unless Quiet is set. + /// outs() a single line message indicating whether compilation was successful + /// or failed, unless Quiet is set. ExtraArgs specifies additional arguments + /// to pass to the child bugpoint instance. /// - bool runPasses(const std::vector &PassesToRun, + bool runPasses(Module *Program, + const std::vector &PassesToRun, std::string &OutputFilename, bool DeleteOutput = false, - bool Quiet = false) const; + bool Quiet = false, unsigned NumExtraArgs = 0, + const char * const *ExtraArgs = nullptr) const; + + /// runManyPasses - Take the specified pass list and create different + /// combinations of passes to compile the program with. Compile the program with + /// each set and mark test to see if it compiled correctly. If the passes + /// compiled correctly output nothing and rearrange the passes into a new order. + /// If the passes did not compile correctly, output the command required to + /// recreate the failure. This returns true if a compiler error is found. + /// + bool runManyPasses(const std::vector &AllPasses, + std::string &ErrMsg); + /// writeProgramToFile - This writes the current "Program" to the named + /// bitcode file. If an error occurs, true is returned. + /// + bool writeProgramToFile(const std::string &Filename, const Module *M) const; + bool writeProgramToFile(const std::string &Filename, int FD, + const Module *M) const; + +private: /// 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 &PassesToRun, + bool runPasses(Module *M, + const std::vector &PassesToRun, bool DeleteOutput = true) const { std::string Filename; - return runPasses(PassesToRun, Filename, DeleteOutput); + return runPasses(M, PassesToRun, Filename, DeleteOutput); } - /// PrintFunctionList - prints out list of problematic functions - /// - static void PrintFunctionList(const std::vector &Funcs); - - /// deleteInstructionFromProgram - This method clones the current Program and - /// deletes the specified instruction from the cloned module. It then runs a - /// series of cleanup passes (ADCE and SimplifyCFG) to eliminate any code - /// which depends on the value. The modified module is then returned. - /// - Module *deleteInstructionFromProgram(Instruction *I, unsigned Simp) const; - - /// performFinalCleanups - This method clones the current Program and performs - /// a series of cleanups intended to get rid of extra cruft on the module. If - /// the MayModifySemantics argument is true, then the cleanups is allowed to - /// modify how the code behaves. - /// - Module *performFinalCleanups(Module *M, bool MayModifySemantics = false); - /// initializeExecutionEnvironment - This method is used to set up the /// environment for executing LLVM programs. /// bool initializeExecutionEnvironment(); - - /// executeProgram - This method runs "Program", capturing the output of the - /// program to a file, returning the filename of the file. A recommended - /// filename may be optionally specified. If there is a problem with the code - /// generator (e.g., llc crashes), this will throw an exception. - /// - std::string executeProgram(std::string RequestedOutputFilename = "", - std::string Bytecode = "", - const std::string &SharedObjects = "", - AbstractInterpreter *AI = 0, - bool *ProgramExitedNonzero = 0); - - /// executeProgramWithCBE - Used to create reference output with the C - /// backend, if reference output is not provided. If there is a problem with - /// the code generator (e.g., llc crashes), this will throw an exception. - /// - std::string executeProgramWithCBE(std::string OutputFile = ""); - - /// diffProgram - This method executes the specified module and diffs the - /// output against the file specified by ReferenceOutputFile. If the output - /// is different, true is returned. If there is a problem with the code - /// generator (e.g., llc crashes), this will throw an exception. - /// - bool diffProgram(const std::string &BytecodeFile = "", - const std::string &SharedObj = "", - bool RemoveBytecode = false); }; +/// Given a bitcode or assembly input filename, parse and return it, or return +/// null if not possible. +/// +std::unique_ptr parseInputFile(StringRef InputFilename, + LLVMContext &ctxt); + /// getPassesString - Turn a list of passes into a string which indicates the /// command line options that must be passed to add the passes. /// -std::string getPassesString(const std::vector &Passes); +std::string getPassesString(const std::vector &Passes); + +/// PrintFunctionList - prints out list of problematic functions +/// +void PrintFunctionList(const std::vector &Funcs); + +/// PrintGlobalVariableList - prints out list of problematic global variables +/// +void PrintGlobalVariableList(const std::vector &GVs); + +// DeleteGlobalInitializer - "Remove" the global variable by deleting its +// initializer, making it external. +// +void DeleteGlobalInitializer(GlobalVariable *GV); // DeleteFunctionBody - "Remove" the function by deleting all of it's basic // blocks, making it external. // void DeleteFunctionBody(Function *F); +/// Given a module and a list of functions in the module, split the functions +/// OUT of the specified module, and place them in the new module. +std::unique_ptr +SplitFunctionsOutOfModule(Module *M, const std::vector &F, + ValueToValueMapTy &VMap); + } // End llvm namespace #endif