// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
-//
//
// This file contains code used to execute the program utilizing one of the
// various ways of running LLVM bytecode.
//
//===----------------------------------------------------------------------===//
-/*
-BUGPOINT NOTES:
-
-1. Bugpoint should not leave any files behind if the program works properly
-2. There should be an option to specify the program name, which specifies a
- unique string to put into output files. This allows operation in the
- SingleSource directory, e.g. default to the first input filename.
-*/
-
#include "BugDriver.h"
-#include "Support/CommandLine.h"
-#include "Support/Debug.h"
-#include "Support/FileUtilities.h"
-#include "Support/SystemUtils.h"
#include "llvm/Support/ToolRunner.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Support/FileUtilities.h"
+#include "llvm/Support/SystemUtils.h"
#include <fstream>
-#include <iostream>
+using namespace llvm;
namespace {
// OutputType - Allow the user to specify the way code should be run, to test
// for miscompilation.
//
enum OutputType {
- RunLLI, RunJIT, RunLLC, RunCBE
+ AutoPick, RunLLI, RunJIT, RunLLC, RunCBE
};
cl::opt<OutputType>
InterpreterSel(cl::desc("Specify how LLVM code should be executed:"),
- cl::values(clEnumValN(RunLLI, "run-int", "Execute with the interpreter"),
+ cl::values(clEnumValN(AutoPick, "auto", "Use best guess"),
+ clEnumValN(RunLLI, "run-int",
+ "Execute with the interpreter"),
clEnumValN(RunJIT, "run-jit", "Execute with JIT"),
clEnumValN(RunLLC, "run-llc", "Compile with LLC"),
clEnumValN(RunCBE, "run-cbe", "Compile with CBE"),
- 0),
- cl::init(RunCBE));
+ clEnumValEnd),
+ cl::init(AutoPick));
+
+ cl::opt<bool>
+ CheckProgramExitCode("check-exit-code",
+ cl::desc("Assume nonzero exit code is failure (default on)"),
+ cl::init(true));
cl::opt<std::string>
InputFile("input", cl::init("/dev/null"),
AdditionalSOs("additional-so",
cl::desc("Additional shared objects to load "
"into executing programs"));
+
+ cl::opt<unsigned>
+ TimeoutValue("timeout", cl::init(300), cl::value_desc("seconds"),
+ cl::desc("Number of seconds program is allowed to run before it "
+ "is killed (default is 300s), 0 disables timeout"));
}
-// Anything specified after the --args option are taken as arguments to the
-// program being debugged.
-cl::list<std::string>
-InputArgv("args", cl::Positional, cl::desc("<program arguments>..."),
- cl::ZeroOrMore);
+namespace llvm {
+ // Anything specified after the --args option are taken as arguments to the
+ // program being debugged.
+ cl::list<std::string>
+ InputArgv("args", cl::Positional, cl::desc("<program arguments>..."),
+ cl::ZeroOrMore, cl::PositionalEatsArgs);
+
+ cl::list<std::string>
+ ToolArgv("tool-args", cl::Positional, cl::desc("<tool arguments>..."),
+ cl::ZeroOrMore, cl::PositionalEatsArgs);
+}
//===----------------------------------------------------------------------===//
// BugDriver method implementation
bool BugDriver::initializeExecutionEnvironment() {
std::cout << "Initializing execution environment: ";
- // FIXME: This should default to searching for the best interpreter to use on
- // this platform, which would be JIT, then LLC, then CBE, then LLI.
-
// Create an instance of the AbstractInterpreter interface as specified on
// the command line
+ cbe = 0;
std::string Message;
+
switch (InterpreterSel) {
+ case AutoPick:
+ InterpreterSel = RunCBE;
+ Interpreter = cbe = AbstractInterpreter::createCBE(getToolName(), Message,
+ &ToolArgv);
+ if (!Interpreter) {
+ InterpreterSel = RunJIT;
+ Interpreter = AbstractInterpreter::createJIT(getToolName(), Message,
+ &ToolArgv);
+ }
+ if (!Interpreter) {
+ InterpreterSel = RunLLC;
+ Interpreter = AbstractInterpreter::createLLC(getToolName(), Message,
+ &ToolArgv);
+ }
+ if (!Interpreter) {
+ InterpreterSel = RunLLI;
+ Interpreter = AbstractInterpreter::createLLI(getToolName(), Message,
+ &ToolArgv);
+ }
+ if (!Interpreter) {
+ InterpreterSel = AutoPick;
+ Message = "Sorry, I can't automatically select an interpreter!\n";
+ }
+ break;
case RunLLI:
- Interpreter = AbstractInterpreter::createLLI(getToolName(), Message);
+ Interpreter = AbstractInterpreter::createLLI(getToolName(), Message,
+ &ToolArgv);
break;
case RunLLC:
- Interpreter = AbstractInterpreter::createLLC(getToolName(), Message);
+ Interpreter = AbstractInterpreter::createLLC(getToolName(), Message,
+ &ToolArgv);
break;
case RunJIT:
- Interpreter = AbstractInterpreter::createJIT(getToolName(), Message);
+ Interpreter = AbstractInterpreter::createJIT(getToolName(), Message,
+ &ToolArgv);
break;
case RunCBE:
- Interpreter = AbstractInterpreter::createCBE(getToolName(), Message);
+ Interpreter = cbe = AbstractInterpreter::createCBE(getToolName(), Message,
+ &ToolArgv);
break;
default:
Message = "Sorry, this back-end is not supported by bugpoint right now!\n";
std::cerr << Message;
// Initialize auxiliary tools for debugging
- cbe = AbstractInterpreter::createCBE(getToolName(), Message);
- if (!cbe) { std::cout << Message << "\nExiting.\n"; exit(1); }
+ if (!cbe) {
+ cbe = AbstractInterpreter::createCBE(getToolName(), Message, &ToolArgv);
+ if (!cbe) { std::cout << Message << "\nExiting.\n"; exit(1); }
+ }
gcc = GCC::create(getToolName(), Message);
if (!gcc) { std::cout << Message << "\nExiting.\n"; exit(1); }
return Interpreter == 0;
}
+/// compileProgram - Try to compile the specified module, throwing an exception
+/// if an error occurs, or returning normally if not. This is used for code
+/// generation crash testing.
+///
+void BugDriver::compileProgram(Module *M) {
+ // Emit the program to a bytecode file...
+ sys::Path BytecodeFile ("bugpoint-test-program.bc");
+ BytecodeFile.makeUnique();
+ if (writeProgramToFile(BytecodeFile.toString(), M)) {
+ std::cerr << ToolName << ": Error emitting bytecode to file '"
+ << BytecodeFile << "'!\n";
+ exit(1);
+ }
+
+ // Remove the temporary bytecode file when we are done.
+ FileRemover BytecodeFileRemover(BytecodeFile);
+
+ // Actually compile the program!
+ Interpreter->compileProgram(BytecodeFile.toString());
+}
+
/// executeProgram - This method runs "Program", capturing the output of the
/// program to a file, returning the filename of the file. A recommended
std::string BugDriver::executeProgram(std::string OutputFile,
std::string BytecodeFile,
const std::string &SharedObj,
- AbstractInterpreter *AI) {
+ AbstractInterpreter *AI,
+ bool *ProgramExitedNonzero) {
if (AI == 0) AI = Interpreter;
assert(AI && "Interpreter should have been created already!");
bool CreatedBytecode = false;
if (BytecodeFile.empty()) {
// Emit the program to a bytecode file...
- BytecodeFile = getUniqueFilename("bugpoint-test-program.bc");
+ sys::Path uniqueFilename("bugpoint-test-program.bc");
+ uniqueFilename.makeUnique();
+ BytecodeFile = uniqueFilename.toString();
if (writeProgramToFile(BytecodeFile, Program)) {
std::cerr << ToolName << ": Error emitting bytecode to file '"
CreatedBytecode = true;
}
+ // Remove the temporary bytecode file when we are done.
+ sys::Path BytecodePath (BytecodeFile);
+ FileRemover BytecodeFileRemover(BytecodePath, CreatedBytecode);
+
if (OutputFile.empty()) OutputFile = "bugpoint-execution-output";
// Check to see if this is a valid output filename...
- OutputFile = getUniqueFilename(OutputFile);
+ sys::Path uniqueFile(OutputFile);
+ uniqueFile.makeUnique();
+ OutputFile = uniqueFile.toString();
// Figure out which shared objects to run, if any.
std::vector<std::string> SharedObjs(AdditionalSOs);
// Actually execute the program!
int RetVal = AI->ExecuteProgram(BytecodeFile, InputArgv, InputFile,
- OutputFile, SharedObjs);
-
+ OutputFile, SharedObjs, TimeoutValue);
+
+ if (RetVal == -1) {
+ std::cerr << "<timeout>";
+ static bool FirstTimeout = true;
+ if (FirstTimeout) {
+ std::cout << "\n"
+ "*** Program execution timed out! This mechanism is designed to handle\n"
+ " programs stuck in infinite loops gracefully. The -timeout option\n"
+ " can be used to change the timeout threshold or disable it completely\n"
+ " (with -timeout=0). This message is only displayed once.\n";
+ FirstTimeout = false;
+ }
+ }
- // Remove the temporary bytecode file.
- if (CreatedBytecode) removeFile(BytecodeFile);
+ if (ProgramExitedNonzero != 0)
+ *ProgramExitedNonzero = (RetVal != 0);
// Return the filename we captured the output to.
return OutputFile;
}
+/// executeProgramWithCBE - Used to create reference output with the C
+/// backend, if reference output is not provided.
+///
+std::string BugDriver::executeProgramWithCBE(std::string OutputFile) {
+ bool ProgramExitedNonzero;
+ std::string outFN = executeProgram(OutputFile, "", "",
+ (AbstractInterpreter*)cbe,
+ &ProgramExitedNonzero);
+ if (ProgramExitedNonzero) {
+ std::cerr
+ << "Warning: While generating reference output, program exited with\n"
+ << "non-zero exit code. This will NOT be treated as a failure.\n";
+ CheckProgramExitCode = false;
+ }
+ return outFN;
+}
std::string BugDriver::compileSharedObject(const std::string &BytecodeFile) {
assert(Interpreter && "Interpreter should have been created already!");
- std::string OutputCFile;
+ sys::Path OutputCFile;
// Using CBE
cbe->OutputC(BytecodeFile, OutputCFile);
#endif
std::string SharedObjectFile;
- if (gcc->MakeSharedObject(OutputCFile, GCC::CFile, SharedObjectFile))
+ if (gcc->MakeSharedObject(OutputCFile.toString(), GCC::CFile,
+ SharedObjectFile))
exit(1);
// Remove the intermediate C file
- removeFile(OutputCFile);
+ OutputCFile.destroyFile();
return "./" + SharedObjectFile;
}
bool BugDriver::diffProgram(const std::string &BytecodeFile,
const std::string &SharedObject,
bool RemoveBytecode) {
+ bool ProgramExitedNonzero;
+
// Execute the program, generating an output file...
- std::string Output = executeProgram("", BytecodeFile, SharedObject);
+ sys::Path Output (executeProgram("", BytecodeFile, SharedObject, 0,
+ &ProgramExitedNonzero));
+
+ // If we're checking the program exit code, assume anything nonzero is bad.
+ if (CheckProgramExitCode && ProgramExitedNonzero) {
+ Output.destroyFile();
+ if (RemoveBytecode)
+ sys::Path(BytecodeFile).destroyFile();
+ return true;
+ }
std::string Error;
bool FilesDifferent = false;
- if (DiffFiles(ReferenceOutputFile, Output, &Error)) {
+ if (DiffFilesWithTolerance(ReferenceOutputFile, Output.toString(), 0, 0,
+ &Error)) {
if (!Error.empty()) {
- std::cerr << "While diffing output: " << Error << "\n";
+ std::cerr << "While diffing output: " << Error << '\n';
exit(1);
}
FilesDifferent = true;
}
// Remove the generated output.
- removeFile(Output);
+ Output.destroyFile();
// Remove the bytecode file if we are supposed to.
- if (RemoveBytecode) removeFile(BytecodeFile);
+ if (RemoveBytecode) sys::Path(BytecodeFile).destroyFile();
return FilesDifferent;
}
bool BugDriver::isExecutingJIT() {
return InterpreterSel == RunJIT;
}
+
projects / oota-llvm.git / blobdiff