//
// 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.
//
//===----------------------------------------------------------------------===//
//
// system 'ld' conventions. As such, the default output file is ./a.out.
// Additionally, this program outputs a shell script that is used to invoke LLI
// to execute the program. In this manner, the generated executable (a.out for
-// example), is directly executable, whereas the bytecode file actually lives in
-// the a.out.bc file generated by this program. Also, Force is on by default.
+// example), is directly executable, whereas the bitcode file actually lives in
+// the a.out.bc file generated by this program.
//
// Note that if someone (or a script) deletes the executable program generated,
// the .bc file will be left around. Considering that this is a temporary hack,
#include "llvm/LinkAllVMCore.h"
#include "llvm/Linker.h"
+#include "llvm/LLVMContext.h"
#include "llvm/System/Program.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
-#include "llvm/Bytecode/Reader.h"
-#include "llvm/Bytecode/Writer.h"
+#include "llvm/Bitcode/ReaderWriter.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
-#include "llvm/Target/TargetMachineRegistry.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileUtilities.h"
#include "llvm/Support/ManagedStatic.h"
-#include "llvm/Support/Streams.h"
+#include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/SystemUtils.h"
+#include "llvm/Support/raw_ostream.h"
#include "llvm/System/Signals.h"
-#include <fstream>
+#include "llvm/Config/config.h"
#include <memory>
+#include <cstring>
using namespace llvm;
+// Rightly this should go in a header file but it just seems such a waste.
+namespace llvm {
+extern void Optimize(Module*);
+}
+
// Input/Output Options
static cl::list<std::string> InputFilenames(cl::Positional, cl::OneOrMore,
- cl::desc("<input bytecode files>"));
+ cl::desc("<input bitcode files>"));
static cl::opt<std::string> OutputFilename("o", cl::init("a.out"),
cl::desc("Override output filename"),
cl::value_desc("filename"));
+static cl::opt<std::string> BitcodeOutputFilename("b", cl::init(""),
+ cl::desc("Override bitcode output filename"),
+ cl::value_desc("filename"));
+
static cl::opt<bool> Verbose("v",
cl::desc("Print information about actions taken"));
cl::desc("Specify a library search path"),
cl::value_desc("directory"));
+static cl::list<std::string> FrameworkPaths("F", cl::Prefix,
+ cl::desc("Specify a framework search path"),
+ cl::value_desc("directory"));
+
static cl::list<std::string> Libraries("l", cl::Prefix,
cl::desc("Specify libraries to link to"),
cl::value_desc("library prefix"));
+static cl::list<std::string> Frameworks("framework",
+ cl::desc("Specify frameworks to link to"),
+ cl::value_desc("framework"));
+
// Options to control the linking, optimization, and code gen processes
static cl::opt<bool> LinkAsLibrary("link-as-library",
cl::desc("Link the .bc files together as a library, not an executable"));
static cl::alias Relink("r", cl::aliasopt(LinkAsLibrary),
cl::desc("Alias for -link-as-library"));
-static cl::opt<const TargetMachineRegistry::Entry*, false, TargetNameParser>
- MachineArch("march", cl::desc("Architecture to generate assembly for:"));
-
static cl::opt<bool> Native("native",
cl::desc("Generate a native binary instead of a shell script"));
static cl::opt<bool>NativeCBE("native-cbe",
cl::desc("Generate a native binary with the C backend and GCC"));
-static cl::opt<bool>DisableCompression("disable-compression", cl::init(true),
- cl::desc("Disable writing of compressed bytecode files"));
-
static cl::list<std::string> PostLinkOpts("post-link-opts",
cl::value_desc("path"),
cl::desc("Run one or more optimization programs after linking"));
static cl::opt<bool> CO8("end-group", cl::Hidden,
cl::desc("Compatibility option: ignored"));
+static cl::opt<std::string> CO9("m", cl::Hidden,
+ cl::desc("Compatibility option: ignored"));
+
/// This is just for convenience so it doesn't have to be passed around
/// everywhere.
static std::string progname;
/// Message - The message to print to standard error.
///
static void PrintAndExit(const std::string &Message, int errcode = 1) {
- cerr << progname << ": " << Message << "\n";
+ errs() << progname << ": " << Message << "\n";
llvm_shutdown();
exit(errcode);
}
+static void PrintCommand(const std::vector<const char*> &args) {
+ std::vector<const char*>::const_iterator I = args.begin(), E = args.end();
+ for (; I != E; ++I)
+ if (*I)
+ outs() << "'" << *I << "'" << " ";
+ outs() << "\n"; outs().flush();
+}
+
/// CopyEnv - This function takes an array of environment variables and makes a
/// copy of it. This copy can then be manipulated any way the caller likes
/// without affecting the process's real environment.
return;
}
-/// GenerateBytecode - generates a bytecode file from the module provided
-void GenerateBytecode(Module* M, const std::string& FileName) {
+/// GenerateBitcode - generates a bitcode file from the module provided
+void GenerateBitcode(Module* M, const std::string& FileName) {
+
+ if (Verbose)
+ outs() << "Generating Bitcode To " << FileName << '\n';
// Create the output file.
- std::ios::openmode io_mode = std::ios::out | std::ios::trunc |
- std::ios::binary;
- std::ofstream Out(FileName.c_str(), io_mode);
- if (!Out.good())
- PrintAndExit("error opening '" + FileName + "' for writing!");
+ std::string ErrorInfo;
+ raw_fd_ostream Out(FileName.c_str(), ErrorInfo,
+ raw_fd_ostream::F_Binary);
+ if (!ErrorInfo.empty())
+ PrintAndExit(ErrorInfo);
- // Ensure that the bytecode file gets removed from the disk if we get a
+ // Ensure that the bitcode file gets removed from the disk if we get a
// terminating signal.
sys::RemoveFileOnSignal(sys::Path(FileName));
// Write it out
- OStream L(Out);
- WriteBytecodeToFile(M, L, !DisableCompression);
+ WriteBitcodeToFile(M, Out);
- // Close the bytecode file.
+ // Close the bitcode file.
Out.close();
}
/// GenerateAssembly - generates a native assembly language source file from the
-/// specified bytecode file.
+/// specified bitcode file.
///
/// Inputs:
-/// InputFilename - The name of the input bytecode file.
+/// InputFilename - The name of the input bitcode file.
/// OutputFilename - The name of the file to generate.
/// llc - The pathname to use for LLC.
/// envp - The environment to use when running LLC.
const std::string &InputFilename,
const sys::Path &llc,
std::string &ErrMsg ) {
- // Run LLC to convert the bytecode file into assembly code.
+ // Run LLC to convert the bitcode file into assembly code.
std::vector<const char*> args;
args.push_back(llc.c_str());
+ // We will use GCC to assemble the program so set the assembly syntax to AT&T,
+ // regardless of what the target in the bitcode file is.
+ args.push_back("-x86-asm-syntax=att");
args.push_back("-f");
args.push_back("-o");
args.push_back(OutputFilename.c_str());
args.push_back(InputFilename.c_str());
args.push_back(0);
- return sys::Program::ExecuteAndWait(llc,&args[0],0,0,0,&ErrMsg);
+ if (Verbose) {
+ outs() << "Generating Assembly With: \n";
+ PrintCommand(args);
+ }
+
+ return sys::Program::ExecuteAndWait(llc, &args[0], 0, 0, 0, 0, &ErrMsg);
}
-/// GenerateCFile - generates a C source file from the specified bytecode file.
+/// GenerateCFile - generates a C source file from the specified bitcode file.
static int GenerateCFile(const std::string &OutputFile,
const std::string &InputFile,
const sys::Path &llc,
std::string& ErrMsg) {
- // Run LLC to convert the bytecode file into C.
+ // Run LLC to convert the bitcode file into C.
std::vector<const char*> args;
args.push_back(llc.c_str());
args.push_back("-march=c");
args.push_back(OutputFile.c_str());
args.push_back(InputFile.c_str());
args.push_back(0);
- return sys::Program::ExecuteAndWait(llc, &args[0],0,0,0,&ErrMsg);
+
+ if (Verbose) {
+ outs() << "Generating C Source With: \n";
+ PrintCommand(args);
+ }
+
+ return sys::Program::ExecuteAndWait(llc, &args[0], 0, 0, 0, 0, &ErrMsg);
}
/// GenerateNative - generates a native object file from the
-/// specified bytecode file.
+/// specified bitcode file.
///
/// Inputs:
-/// InputFilename - The name of the input bytecode file.
-/// OutputFilename - The name of the file to generate.
-/// LinkItems - The native libraries, files, code with which to link
-/// LibPaths - The list of directories in which to find libraries.
-/// gcc - The pathname to use for GGC.
-/// envp - A copy of the process's current environment.
+/// InputFilename - The name of the input bitcode file.
+/// OutputFilename - The name of the file to generate.
+/// NativeLinkItems - The native libraries, files, code with which to link
+/// LibPaths - The list of directories in which to find libraries.
+/// FrameworksPaths - The list of directories in which to find frameworks.
+/// Frameworks - The list of frameworks (dynamic libraries)
+/// gcc - The pathname to use for GGC.
+/// envp - A copy of the process's current environment.
///
/// Outputs:
/// None.
// We can't just assemble and link the file with the system assembler
// and linker because we don't know where to put the _start symbol.
// GCC mysteriously knows how to do it.
- std::vector<const char*> args;
+ std::vector<std::string> args;
args.push_back(gcc.c_str());
args.push_back("-fno-strict-aliasing");
args.push_back("-O3");
args.push_back("-o");
- args.push_back(OutputFilename.c_str());
- args.push_back(InputFilename.c_str());
+ args.push_back(OutputFilename);
+ args.push_back(InputFilename);
- // Add in the library paths
+ // Add in the library and framework paths
for (unsigned index = 0; index < LibPaths.size(); index++) {
- args.push_back("-L");
- args.push_back(LibPaths[index].c_str());
+ args.push_back("-L" + LibPaths[index]);
+ }
+ for (unsigned index = 0; index < FrameworkPaths.size(); index++) {
+ args.push_back("-F" + FrameworkPaths[index]);
}
// Add the requested options
- for (unsigned index = 0; index < XLinker.size(); index++) {
- args.push_back(XLinker[index].c_str());
- args.push_back(Libraries[index].c_str());
- }
+ for (unsigned index = 0; index < XLinker.size(); index++)
+ args.push_back(XLinker[index]);
// Add in the libraries to link.
for (unsigned index = 0; index < LinkItems.size(); index++)
if (LinkItems[index].first != "crtend") {
- if (LinkItems[index].second) {
- std::string lib_name = "-l" + LinkItems[index].first;
- args.push_back(lib_name.c_str());
- } else
- args.push_back(LinkItems[index].first.c_str());
+ if (LinkItems[index].second)
+ args.push_back("-l" + LinkItems[index].first);
+ else
+ args.push_back(LinkItems[index].first);
}
- args.push_back(0);
+ // Add in frameworks to link.
+ for (unsigned index = 0; index < Frameworks.size(); index++) {
+ args.push_back("-framework");
+ args.push_back(Frameworks[index]);
+ }
+
+ // Now that "args" owns all the std::strings for the arguments, call the c_str
+ // method to get the underlying string array. We do this game so that the
+ // std::string array is guaranteed to outlive the const char* array.
+ std::vector<const char *> Args;
+ for (unsigned i = 0, e = args.size(); i != e; ++i)
+ Args.push_back(args[i].c_str());
+ Args.push_back(0);
+
+ if (Verbose) {
+ outs() << "Generating Native Executable With:\n";
+ PrintCommand(Args);
+ }
// Run the compiler to assembly and link together the program.
int R = sys::Program::ExecuteAndWait(
- gcc, &args[0], (const char**)clean_env,0,0,&ErrMsg);
+ gcc, &Args[0], (const char**)clean_env, 0, 0, 0, &ErrMsg);
delete [] clean_env;
return R;
}
/// EmitShellScript - Output the wrapper file that invokes the JIT on the LLVM
-/// bytecode file for the program.
+/// bitcode file for the program.
static void EmitShellScript(char **argv) {
+ if (Verbose)
+ outs() << "Emitting Shell Script\n";
#if defined(_WIN32) || defined(__CYGWIN__)
// Windows doesn't support #!/bin/sh style shell scripts in .exe files. To
// support windows systems, we copy the llvm-stub.exe executable from the
// build tree to the destination file.
std::string ErrMsg;
- sys::Path llvmstub = FindExecutable("llvm-stub.exe", argv[0]);
+ sys::Path llvmstub = FindExecutable("llvm-stub.exe", argv[0],
+ (void *)(intptr_t)&Optimize);
if (llvmstub.isEmpty())
PrintAndExit("Could not find llvm-stub.exe executable!");
#endif
// Output the script to start the program...
- std::ofstream Out2(OutputFilename.c_str());
- if (!Out2.good())
- PrintAndExit("error opening '" + OutputFilename + "' for writing!");
+ std::string ErrorInfo;
+ raw_fd_ostream Out2(OutputFilename.c_str(), ErrorInfo);
+ if (!ErrorInfo.empty())
+ PrintAndExit(ErrorInfo);
Out2 << "#!/bin/sh\n";
// Allow user to setenv LLVMINTERP if lli is not in their PATH.
// on the command line, so that we don't have to do this manually!
for (std::vector<std::string>::iterator i = Libraries.begin(),
e = Libraries.end(); i != e; ++i) {
- sys::Path FullLibraryPath = sys::Path::FindLibrary(*i);
- if (!FullLibraryPath.isEmpty() && FullLibraryPath.isDynamicLibrary())
- Out2 << " -load=" << FullLibraryPath.toString() << " \\\n";
+ // try explicit -L arguments first:
+ sys::Path FullLibraryPath;
+ for (cl::list<std::string>::const_iterator P = LibPaths.begin(),
+ E = LibPaths.end(); P != E; ++P) {
+ FullLibraryPath = *P;
+ FullLibraryPath.appendComponent("lib" + *i);
+ FullLibraryPath.appendSuffix(&(LTDL_SHLIB_EXT[1]));
+ if (!FullLibraryPath.isEmpty()) {
+ if (!FullLibraryPath.isDynamicLibrary()) {
+ // Not a native shared library; mark as invalid
+ FullLibraryPath = sys::Path();
+ } else break;
+ }
+ }
+ if (FullLibraryPath.isEmpty())
+ FullLibraryPath = sys::Path::FindLibrary(*i);
+ if (!FullLibraryPath.isEmpty())
+ Out2 << " -load=" << FullLibraryPath.str() << " \\\n";
}
- Out2 << " $0.bc ${1+\"$@\"}\n";
+ Out2 << " " << BitcodeOutputFilename << " ${1+\"$@\"}\n";
Out2.close();
}
}
}
-// Rightly this should go in a header file but it just seems such a waste.
-namespace llvm {
-extern void Optimize(Module*);
-}
-
int main(int argc, char **argv, char **envp) {
- llvm_shutdown_obj X; // Call llvm_shutdown() on exit.
+ // Print a stack trace if we signal out.
+ sys::PrintStackTraceOnErrorSignal();
+ PrettyStackTraceProgram X(argc, argv);
+
+ LLVMContext &Context = getGlobalContext();
+ llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
try {
// Initial global variable above for convenience printing of program name.
progname = sys::Path(argv[0]).getBasename();
// Parse the command line options
- cl::ParseCommandLineOptions(argc, argv, " llvm linker\n");
- sys::PrintStackTraceOnErrorSignal();
+ cl::ParseCommandLineOptions(argc, argv, "llvm linker\n");
// Construct a Linker (now that Verbose is set)
- Linker TheLinker(progname, OutputFilename, Verbose);
- // Keep track of the native link items (vice the bytecode items)
- Linker::ItemList LinkItems;
+ Linker TheLinker(progname, OutputFilename, Context, Verbose);
+
+ // Keep track of the native link items (versus the bitcode items)
+ Linker::ItemList NativeLinkItems;
// Add library paths to the linker
TheLinker.addPaths(LibPaths);
BuildLinkItems(Items, InputFilenames, Libraries);
// Link all the items together
- if (TheLinker.LinkInItems(Items,LinkItems) )
+ if (TheLinker.LinkInItems(Items, NativeLinkItems) )
return 1; // Error already printed
}
// Optimize the module
Optimize(Composite.get());
- // Generate the bytecode for the optimized module.
- std::string RealBytecodeOutput = OutputFilename;
- if (!LinkAsLibrary) RealBytecodeOutput += ".bc";
- GenerateBytecode(Composite.get(), RealBytecodeOutput);
+#if defined(_WIN32) || defined(__CYGWIN__)
+ if (!LinkAsLibrary) {
+ // Default to "a.exe" instead of "a.out".
+ if (OutputFilename.getNumOccurrences() == 0)
+ OutputFilename = "a.exe";
+
+ // If there is no suffix add an "exe" one.
+ sys::Path ExeFile( OutputFilename );
+ if (ExeFile.getSuffix() == "") {
+ ExeFile.appendSuffix("exe");
+ OutputFilename = ExeFile.str();
+ }
+ }
+#endif
+
+ // Generate the bitcode for the optimized module.
+ // If -b wasn't specified, use the name specified
+ // with -o to construct BitcodeOutputFilename.
+ if (BitcodeOutputFilename.empty()) {
+ BitcodeOutputFilename = OutputFilename;
+ if (!LinkAsLibrary) BitcodeOutputFilename += ".bc";
+ }
+
+ GenerateBitcode(Composite.get(), BitcodeOutputFilename);
// If we are not linking a library, generate either a native executable
// or a JIT shell script, depending upon what the user wants.
const char* args[4];
args[0] = I->c_str();
- args[1] = RealBytecodeOutput.c_str();
+ args[1] = BitcodeOutputFilename.c_str();
args[2] = tmp_output.c_str();
args[3] = 0;
- if (0 == sys::Program::ExecuteAndWait(prog, args, 0,0,0, &ErrMsg)) {
- if (tmp_output.isBytecodeFile()) {
- sys::Path target(RealBytecodeOutput);
+ if (0 == sys::Program::ExecuteAndWait(prog, args, 0,0,0,0, &ErrMsg)) {
+ if (tmp_output.isBitcodeFile() || tmp_output.isBitcodeFile()) {
+ sys::Path target(BitcodeOutputFilename);
target.eraseFromDisk();
if (tmp_output.renamePathOnDisk(target, &ErrMsg))
PrintAndExit(ErrMsg, 2);
} else
- PrintAndExit("Post-link optimization output is not bytecode");
+ PrintAndExit("Post-link optimization output is not bitcode");
} else {
PrintAndExit(ErrMsg);
}
}
// If the user wants to generate a native executable, compile it from the
- // bytecode file.
+ // bitcode file.
//
- // Otherwise, create a script that will run the bytecode through the JIT.
+ // Otherwise, create a script that will run the bitcode through the JIT.
if (Native) {
// Name of the Assembly Language output file
sys::Path AssemblyFile ( OutputFilename);
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
// Determine the locations of the llc and gcc programs.
- sys::Path llc = FindExecutable("llc", argv[0]);
+ sys::Path llc = FindExecutable("llc", argv[0],
+ (void *)(intptr_t)&Optimize);
if (llc.isEmpty())
PrintAndExit("Failed to find llc");
- sys::Path gcc = FindExecutable("gcc", argv[0]);
+ sys::Path gcc = sys::Program::FindProgramByName("gcc");
if (gcc.isEmpty())
PrintAndExit("Failed to find gcc");
- // Generate an assembly language file for the bytecode.
- if (Verbose)
- cout << "Generating Assembly Code\n";
+ // Generate an assembly language file for the bitcode.
std::string ErrMsg;
- if (0 != GenerateAssembly(AssemblyFile.toString(), RealBytecodeOutput,
+ if (0 != GenerateAssembly(AssemblyFile.str(), BitcodeOutputFilename,
llc, ErrMsg))
PrintAndExit(ErrMsg);
- if (Verbose)
- cout << "Generating Native Code\n";
- if (0 != GenerateNative(OutputFilename, AssemblyFile.toString(),
- LinkItems,gcc,envp,ErrMsg))
+ if (0 != GenerateNative(OutputFilename, AssemblyFile.str(),
+ NativeLinkItems, gcc, envp, ErrMsg))
PrintAndExit(ErrMsg);
// Remove the assembly language file.
sys::RemoveFileOnSignal(sys::Path(OutputFilename));
// Determine the locations of the llc and gcc programs.
- sys::Path llc = FindExecutable("llc", argv[0]);
+ sys::Path llc = FindExecutable("llc", argv[0],
+ (void *)(intptr_t)&Optimize);
if (llc.isEmpty())
PrintAndExit("Failed to find llc");
- sys::Path gcc = FindExecutable("gcc", argv[0]);
+ sys::Path gcc = sys::Program::FindProgramByName("gcc");
if (gcc.isEmpty())
PrintAndExit("Failed to find gcc");
- // Generate an assembly language file for the bytecode.
- if (Verbose)
- cout << "Generating Assembly Code\n";
+ // Generate an assembly language file for the bitcode.
std::string ErrMsg;
- if (0 != GenerateCFile(
- CFile.toString(), RealBytecodeOutput, llc, ErrMsg))
+ if (GenerateCFile(CFile.str(), BitcodeOutputFilename, llc, ErrMsg))
PrintAndExit(ErrMsg);
- if (Verbose)
- cout << "Generating Native Code\n";
- if (0 != GenerateNative(OutputFilename, CFile.toString(), LinkItems,
- gcc, envp, ErrMsg))
+ if (GenerateNative(OutputFilename, CFile.str(),
+ NativeLinkItems, gcc, envp, ErrMsg))
PrintAndExit(ErrMsg);
// Remove the assembly language file.
if (sys::Path(OutputFilename).makeExecutableOnDisk(&ErrMsg))
PrintAndExit(ErrMsg);
- // Make the bytecode file readable and directly executable in LLEE as well
- if (sys::Path(RealBytecodeOutput).makeExecutableOnDisk(&ErrMsg))
+ // Make the bitcode file readable and directly executable in LLEE as well
+ if (sys::Path(BitcodeOutputFilename).makeExecutableOnDisk(&ErrMsg))
PrintAndExit(ErrMsg);
- if (sys::Path(RealBytecodeOutput).makeReadableOnDisk(&ErrMsg))
+ if (sys::Path(BitcodeOutputFilename).makeReadableOnDisk(&ErrMsg))
PrintAndExit(ErrMsg);
}
} catch (const std::string& msg) {
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