//===- llvm-ld.cpp - LLVM 'ld' compatible linker --------------------------===//
-//
+//
// 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 utility is intended to be compatible with GCC, and follows standard
//
//===----------------------------------------------------------------------===//
-#include "llvm-ld.h"
+#include "llvm/LinkAllVMCore.h"
#include "llvm/Linker.h"
+#include "llvm/System/Program.h"
#include "llvm/Module.h"
#include "llvm/PassManager.h"
#include "llvm/Bytecode/Reader.h"
-#include "llvm/Bytecode/WriteBytecodePass.h"
+#include "llvm/Bytecode/Writer.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Target/TargetMachine.h"
#include "llvm/Target/TargetMachineRegistry.h"
-#include "llvm/Transforms/IPO.h"
-#include "llvm/Transforms/Scalar.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileUtilities.h"
-#include "llvm/System/Signals.h"
+#include "llvm/Support/Streams.h"
#include "llvm/Support/SystemUtils.h"
+#include "llvm/System/Signals.h"
#include <fstream>
#include <memory>
using namespace llvm;
-enum OptimizationLevels {
- OPT_FAST_COMPILE,
- OPT_SIMPLE,
- OPT_AGGRESSIVE,
- OPT_LINK_TIME,
- OPT_AGGRESSIVE_LINK_TIME
-};
-
-namespace {
- cl::list<std::string>
- InputFilenames(cl::Positional, cl::desc("<input bytecode files>"),
- cl::OneOrMore);
-
- cl::opt<std::string>
- OutputFilename("o", cl::desc("Override output filename"), cl::init("a.out"),
- cl::value_desc("filename"));
-
- cl::opt<bool>
- Verbose("v", cl::desc("Print information about actions taken"));
-
- cl::list<std::string>
- LibPaths("L", cl::desc("Specify a library search path"), cl::Prefix,
- cl::value_desc("directory"));
-
- cl::list<std::string>
- Libraries("l", cl::desc("Specify libraries to link to"), cl::Prefix,
- cl::value_desc("library prefix"));
-
- cl::opt<bool>
- Strip("s", cl::desc("Strip symbol info from executable"));
-
- cl::opt<bool>
- NoInternalize("disable-internalize",
- cl::desc("Do not mark all symbols as internal"));
- cl::alias
- ExportDynamic("export-dynamic", cl::desc("Alias for -disable-internalize"),
- cl::aliasopt(NoInternalize));
-
- cl::opt<bool>
- LinkAsLibrary("link-as-library", cl::desc("Link the .bc files together as a"
- " library, not an executable"));
- cl::alias
- Relink("r", cl::desc("Alias for -link-as-library"),
- cl::aliasopt(LinkAsLibrary));
-
- cl::opt<const TargetMachineRegistry::Entry*, false, TargetNameParser>
+// Input/Output Options
+static cl::list<std::string> InputFilenames(cl::Positional, cl::OneOrMore,
+ cl::desc("<input bytecode files>"));
+
+static cl::opt<std::string> OutputFilename("o", cl::init("a.out"),
+ cl::desc("Override output filename"),
+ cl::value_desc("filename"));
+
+static cl::opt<bool> Verbose("v",
+ cl::desc("Print information about actions taken"));
+
+static cl::list<std::string> LibPaths("L", cl::Prefix,
+ cl::desc("Specify a library 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::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:"));
- cl::opt<bool>
- Native("native",
- cl::desc("Generate a native binary instead of a shell script"));
- cl::opt<bool>
- NativeCBE("native-cbe",
- cl::desc("Generate a native binary with the C backend and GCC"));
-
- // Compatibility options that are ignored but supported by LD
- cl::opt<std::string>
- CO3("soname", cl::Hidden, cl::desc("Compatibility option: ignored"));
- cl::opt<std::string>
- CO4("version-script", cl::Hidden, cl::desc("Compatibility option: ignored"));
- cl::opt<bool>
- CO5("eh-frame-hdr", cl::Hidden, cl::desc("Compatibility option: ignored"));
- cl::opt<std::string>
- CO6("h", cl::Hidden, cl::desc("Compatibility option: ignored"));
-
- cl::opt<OptimizationLevels> OptLevel(
- cl::desc("Choose level of optimization to apply:"),
- cl::init(OPT_FAST_COMPILE), cl::values(
- clEnumValN(OPT_FAST_COMPILE,"O0",
- "An alias for the -O1 option."),
- clEnumValN(OPT_FAST_COMPILE,"O1",
- "Optimize for linking speed, not execution speed."),
- clEnumValN(OPT_SIMPLE,"O2",
- "Perform only required/minimal optimizations"),
- clEnumValN(OPT_AGGRESSIVE,"O3",
- "An alias for the -O2 option."),
- clEnumValN(OPT_LINK_TIME,"O4",
- "Perform standard link time optimizations"),
- clEnumValN(OPT_AGGRESSIVE_LINK_TIME,"O5",
- "Perform aggressive link time optimizations"),
- clEnumValEnd
- )
- );
-}
+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(false),
+ 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::list<std::string> XLinker("Xlinker", cl::value_desc("option"),
+ cl::desc("Pass options to the system linker"));
+
+// Compatibility options that are ignored but supported by LD
+static cl::opt<std::string> CO3("soname", cl::Hidden,
+ cl::desc("Compatibility option: ignored"));
+
+static cl::opt<std::string> CO4("version-script", cl::Hidden,
+ cl::desc("Compatibility option: ignored"));
+
+static cl::opt<bool> CO5("eh-frame-hdr", cl::Hidden,
+ cl::desc("Compatibility option: ignored"));
+
+static cl::opt<std::string> CO6("h", 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;
/// PrintAndReturn - Prints a message to standard error and returns true.
///
/// progname - The name of the program (i.e. argv[0]).
/// Message - The message to print to standard error.
///
-static int PrintAndReturn(const char *progname, const std::string &Message) {
- std::cerr << progname << ": " << Message << "\n";
+static int PrintAndReturn(const std::string &Message) {
+ llvm_cerr << progname << ": " << Message << "\n";
return 1;
}
+/// 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.
+///
+/// Inputs:
+/// envp - An array of C strings containing an environment.
+///
+/// Return value:
+/// NULL - An error occurred.
+///
+/// Otherwise, a pointer to a new array of C strings is returned. Every string
+/// in the array is a duplicate of the one in the original array (i.e. we do
+/// not copy the char *'s from one array to another).
+///
+static char ** CopyEnv(char ** const envp) {
+ // Count the number of entries in the old list;
+ unsigned entries; // The number of entries in the old environment list
+ for (entries = 0; envp[entries] != NULL; entries++)
+ /*empty*/;
+
+ // Add one more entry for the NULL pointer that ends the list.
+ ++entries;
+
+ // If there are no entries at all, just return NULL.
+ if (entries == 0)
+ return NULL;
+
+ // Allocate a new environment list.
+ char **newenv = new char* [entries];
+ if ((newenv = new char* [entries]) == NULL)
+ return NULL;
+
+ // Make a copy of the list. Don't forget the NULL that ends the list.
+ entries = 0;
+ while (envp[entries] != NULL) {
+ newenv[entries] = new char[strlen (envp[entries]) + 1];
+ strcpy (newenv[entries], envp[entries]);
+ ++entries;
+ }
+ newenv[entries] = NULL;
+
+ return newenv;
+}
+
+
+/// RemoveEnv - Remove the specified environment variable from the environment
+/// array.
+///
+/// Inputs:
+/// name - The name of the variable to remove. It cannot be NULL.
+/// envp - The array of environment variables. It cannot be NULL.
+///
+/// Notes:
+/// This is mainly done because functions to remove items from the environment
+/// are not available across all platforms. In particular, Solaris does not
+/// seem to have an unsetenv() function or a setenv() function (or they are
+/// undocumented if they do exist).
+///
+static void RemoveEnv(const char * name, char ** const envp) {
+ for (unsigned index=0; envp[index] != NULL; index++) {
+ // Find the first equals sign in the array and make it an EOS character.
+ char *p = strchr (envp[index], '=');
+ if (p == NULL)
+ continue;
+ else
+ *p = '\0';
+
+ // Compare the two strings. If they are equal, zap this string.
+ // Otherwise, restore it.
+ if (!strcmp(name, envp[index]))
+ *envp[index] = '\0';
+ else
+ *p = '=';
+ }
+
+ return;
+}
+
+/// GenerateBytecode - generates a bytecode file from the module provided
+void GenerateBytecode(Module* M, const std::string& FileName) {
+
+ // 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()) {
+ PrintAndReturn("error opening '" + FileName + "' for writing!");
+ return;
+ }
+
+ // Ensure that the bytecode file gets removed from the disk if we get a
+ // terminating signal.
+ sys::RemoveFileOnSignal(sys::Path(FileName));
+
+ // Write it out
+ llvm_ostream L(Out);
+ WriteBytecodeToFile(M, L, !DisableCompression);
+
+ // Close the bytecode file.
+ Out.close();
+}
+
+/// GenerateAssembly - generates a native assembly language source file from the
+/// specified bytecode file.
+///
+/// Inputs:
+/// InputFilename - The name of the input bytecode file.
+/// OutputFilename - The name of the file to generate.
+/// llc - The pathname to use for LLC.
+/// envp - The environment to use when running LLC.
+///
+/// Return non-zero value on error.
+///
+static int GenerateAssembly(const std::string &OutputFilename,
+ const std::string &InputFilename,
+ const sys::Path &llc,
+ std::string &ErrMsg ) {
+ // Run LLC to convert the bytecode file into assembly code.
+ std::vector<const char*> args;
+ args.push_back(llc.c_str());
+ 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);
+}
+
+/// GenerateCFile - generates a C source file from the specified bytecode 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.
+ std::vector<const char*> args;
+ args.push_back(llc.c_str());
+ args.push_back("-march=c");
+ args.push_back("-f");
+ args.push_back("-o");
+ 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);
+}
+
+/// GenerateNative - generates a native object file from the
+/// specified bytecode 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.
+///
+/// Outputs:
+/// None.
+///
+/// Returns non-zero value on error.
+///
+static int GenerateNative(const std::string &OutputFilename,
+ const std::string &InputFilename,
+ const Linker::ItemList &LinkItems,
+ const sys::Path &gcc, char ** const envp,
+ std::string& ErrMsg) {
+ // Remove these environment variables from the environment of the
+ // programs that we will execute. It appears that GCC sets these
+ // environment variables so that the programs it uses can configure
+ // themselves identically.
+ //
+ // However, when we invoke GCC below, we want it to use its normal
+ // configuration. Hence, we must sanitize its environment.
+ char ** clean_env = CopyEnv(envp);
+ if (clean_env == NULL)
+ return 1;
+ RemoveEnv("LIBRARY_PATH", clean_env);
+ RemoveEnv("COLLECT_GCC_OPTIONS", clean_env);
+ RemoveEnv("GCC_EXEC_PREFIX", clean_env);
+ RemoveEnv("COMPILER_PATH", clean_env);
+ RemoveEnv("COLLECT_GCC", clean_env);
+
+
+ // Run GCC to assemble and link the program into native code.
+ //
+ // Note:
+ // 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;
+ 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());
+
+ // Add in the library paths
+ for (unsigned index = 0; index < LibPaths.size(); index++) {
+ args.push_back("-L");
+ args.push_back(LibPaths[index].c_str());
+ }
+
+ // 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());
+ }
+
+ // 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());
+ }
+
+ args.push_back(0);
+
+ // 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);
+ delete [] clean_env;
+ return R;
+}
+
/// EmitShellScript - Output the wrapper file that invokes the JIT on the LLVM
/// bytecode file for the program.
static void EmitShellScript(char **argv) {
// 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 llvmstub = FindExecutable("llvm-stub.exe", argv[0]);
- if (llvmstub.empty()) {
- std::cerr << "Could not find llvm-stub.exe executable!\n";
+ std::string ErrMsg;
+ sys::Path llvmstub = FindExecutable("llvm-stub.exe", argv[0]);
+ if (llvmstub.isEmpty()) {
+ llvm_cerr << "Could not find llvm-stub.exe executable!\n";
exit(1);
}
- if (CopyFile(OutputFilename, llvmstub)) {
- std::cerr << "Could not copy the llvm-stub.exe executable!\n";
- exit(1);
+
+ if (0 != sys::CopyFile(sys::Path(OutputFilename), llvmstub, &ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ exit(1);
}
+
return;
#endif
// Output the script to start the program...
std::ofstream Out2(OutputFilename.c_str());
if (!Out2.good())
- exit(PrintAndReturn(argv[0], "error opening '" + OutputFilename +
- "' for writing!"));
+ exit(PrintAndReturn("error opening '" + OutputFilename + "' for writing!"));
Out2 << "#!/bin/sh\n";
// Allow user to setenv LLVMINTERP if lli is not in their PATH.
LibPaths.push_back("/usr/X11R6/lib");
// We don't need to link in libc! In fact, /usr/lib/libc.so may not be a
// shared object at all! See RH 8: plain text.
- std::vector<std::string>::iterator libc =
+ std::vector<std::string>::iterator libc =
std::find(Libraries.begin(), Libraries.end(), "c");
if (libc != Libraries.end()) Libraries.erase(libc);
// List all the shared object (native) libraries this executable will need
// on the command line, so that we don't have to do this manually!
- for (std::vector<std::string>::iterator i = Libraries.begin(),
+ for (std::vector<std::string>::iterator i = Libraries.begin(),
e = Libraries.end(); i != e; ++i) {
- std::string FullLibraryPath = FindLib(*i, LibPaths, true);
- if (!FullLibraryPath.empty() && IsSharedObject(FullLibraryPath))
- Out2 << " -load=" << FullLibraryPath << " \\\n";
+ sys::Path FullLibraryPath = sys::Path::FindLibrary(*i);
+ if (!FullLibraryPath.isEmpty() && FullLibraryPath.isDynamicLibrary())
+ Out2 << " -load=" << FullLibraryPath.toString() << " \\\n";
}
Out2 << " $0.bc ${1+\"$@\"}\n";
Out2.close();
}
-int main(int argc, char **argv, char **envp) {
- cl::ParseCommandLineOptions(argc, argv, " llvm linker for GCC\n");
- sys::PrintStackTraceOnErrorSignal();
-
- std::string ModuleID("llvm-ld-output");
- std::auto_ptr<Module> Composite(new Module(ModuleID));
-
- // We always look first in the current directory when searching for libraries.
- LibPaths.insert(LibPaths.begin(), ".");
-
- // If the user specified an extra search path in their environment, respect
- // it.
- if (char *SearchPath = getenv("LLVM_LIB_SEARCH_PATH"))
- LibPaths.push_back(SearchPath);
-
- // Remove any consecutive duplicates of the same library...
- Libraries.erase(std::unique(Libraries.begin(), Libraries.end()),
- Libraries.end());
-
- // Link in all of the files
- if (LinkFiles(argv[0], Composite.get(), InputFilenames, Verbose))
- return 1; // Error already printed
-
- // Link in all of the libraries next...
- if (!LinkAsLibrary)
- LinkLibraries(argv[0], Composite.get(), Libraries, LibPaths,
- Verbose, Native);
-
- // Create the output file.
- std::string RealBytecodeOutput = OutputFilename;
- if (!LinkAsLibrary) RealBytecodeOutput += ".bc";
- std::ofstream Out(RealBytecodeOutput.c_str());
- if (!Out.good())
- return PrintAndReturn(argv[0], "error opening '" + RealBytecodeOutput +
- "' for writing!");
-
- // Ensure that the bytecode file gets removed from the disk if we get a
- // terminating signal.
- sys::RemoveFileOnSignal(sys::Path(RealBytecodeOutput));
-
- // Generate the bytecode file.
- if (GenerateBytecode(Composite.get(), Strip, !NoInternalize, &Out)) {
- Out.close();
- return PrintAndReturn(argv[0], "error generating bytecode");
+// BuildLinkItems -- This function generates a LinkItemList for the LinkItems
+// linker function by combining the Files and Libraries in the order they were
+// declared on the command line.
+static void BuildLinkItems(
+ Linker::ItemList& Items,
+ const cl::list<std::string>& Files,
+ const cl::list<std::string>& Libraries) {
+
+ // Build the list of linkage items for LinkItems.
+
+ cl::list<std::string>::const_iterator fileIt = Files.begin();
+ cl::list<std::string>::const_iterator libIt = Libraries.begin();
+
+ int libPos = -1, filePos = -1;
+ while ( libIt != Libraries.end() || fileIt != Files.end() ) {
+ if (libIt != Libraries.end())
+ libPos = Libraries.getPosition(libIt - Libraries.begin());
+ else
+ libPos = -1;
+ if (fileIt != Files.end())
+ filePos = Files.getPosition(fileIt - Files.begin());
+ else
+ filePos = -1;
+
+ if (filePos != -1 && (libPos == -1 || filePos < libPos)) {
+ // Add a source file
+ Items.push_back(std::make_pair(*fileIt++, false));
+ } else if (libPos != -1 && (filePos == -1 || libPos < filePos)) {
+ // Add a library
+ Items.push_back(std::make_pair(*libIt++, true));
+ }
}
+}
- // Close the bytecode file.
- Out.close();
-
- // If we are not linking a library, generate either a native executable
- // or a JIT shell script, depending upon what the user wants.
- if (!LinkAsLibrary) {
- // If the user wants to generate a native executable, compile it from the
- // bytecode file.
- //
- // Otherwise, create a script that will run the bytecode through the JIT.
- if (Native) {
- // Name of the Assembly Language output file
- std::string AssemblyFile = OutputFilename + ".s";
-
- // Mark the output files for removal if we get an interrupt.
- sys::RemoveFileOnSignal(sys::Path(AssemblyFile));
- sys::RemoveFileOnSignal(sys::Path(OutputFilename));
-
- // Determine the locations of the llc and gcc programs.
- std::string llc = FindExecutable("llc", argv[0]);
- std::string gcc = FindExecutable("gcc", argv[0]);
- if (llc.empty())
- return PrintAndReturn(argv[0], "Failed to find llc");
-
- if (gcc.empty())
- return PrintAndReturn(argv[0], "Failed to find gcc");
-
- // Generate an assembly language file for the bytecode.
- if (Verbose) std::cout << "Generating Assembly Code\n";
- GenerateAssembly(AssemblyFile, RealBytecodeOutput, llc, envp);
- if (Verbose) std::cout << "Generating Native Code\n";
- GenerateNative(OutputFilename, AssemblyFile, Libraries, LibPaths,
- gcc, envp);
-
- // Remove the assembly language file.
- removeFile (AssemblyFile);
- } else if (NativeCBE) {
- std::string CFile = OutputFilename + ".cbe.c";
-
- // Mark the output files for removal if we get an interrupt.
- sys::RemoveFileOnSignal(sys::Path(CFile));
- sys::RemoveFileOnSignal(sys::Path(OutputFilename));
-
- // Determine the locations of the llc and gcc programs.
- std::string llc = FindExecutable("llc", argv[0]);
- std::string gcc = FindExecutable("gcc", argv[0]);
- if (llc.empty())
- return PrintAndReturn(argv[0], "Failed to find llc");
- if (gcc.empty())
- return PrintAndReturn(argv[0], "Failed to find gcc");
-
- // Generate an assembly language file for the bytecode.
- if (Verbose) std::cout << "Generating Assembly Code\n";
- GenerateCFile(CFile, RealBytecodeOutput, llc, envp);
- if (Verbose) std::cout << "Generating Native Code\n";
- GenerateNative(OutputFilename, CFile, Libraries, LibPaths, gcc, envp);
-
- // Remove the assembly language file.
- removeFile(CFile);
+// 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) {
+ 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();
+
+ // 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;
+
+ // Add library paths to the linker
+ TheLinker.addPaths(LibPaths);
+ TheLinker.addSystemPaths();
+
+ // Remove any consecutive duplicates of the same library...
+ Libraries.erase(std::unique(Libraries.begin(), Libraries.end()),
+ Libraries.end());
+
+ if (LinkAsLibrary) {
+ std::vector<sys::Path> Files;
+ for (unsigned i = 0; i < InputFilenames.size(); ++i )
+ Files.push_back(sys::Path(InputFilenames[i]));
+ if (TheLinker.LinkInFiles(Files))
+ return 1; // Error already printed
+
+ // The libraries aren't linked in but are noted as "dependent" in the
+ // module.
+ for (cl::list<std::string>::const_iterator I = Libraries.begin(),
+ E = Libraries.end(); I != E ; ++I) {
+ TheLinker.getModule()->addLibrary(*I);
+ }
} else {
- EmitShellScript(argv);
+ // Build a list of the items from our command line
+ Linker::ItemList Items;
+ BuildLinkItems(Items, InputFilenames, Libraries);
+
+ // Link all the items together
+ if (TheLinker.LinkInItems(Items,LinkItems) )
+ return 1;
}
-
- // Make the script executable...
- MakeFileExecutable(OutputFilename);
- // Make the bytecode file readable and directly executable in LLEE as well
- MakeFileExecutable(RealBytecodeOutput);
- MakeFileReadable(RealBytecodeOutput);
- }
+ std::auto_ptr<Module> Composite(TheLinker.releaseModule());
+
+ // 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 we are not linking a library, generate either a native executable
+ // or a JIT shell script, depending upon what the user wants.
+ if (!LinkAsLibrary) {
+ // If the user wants to run a post-link optimization, run it now.
+ if (!PostLinkOpts.empty()) {
+ std::vector<std::string> opts = PostLinkOpts;
+ for (std::vector<std::string>::iterator I = opts.begin(),
+ E = opts.end(); I != E; ++I) {
+ sys::Path prog(*I);
+ if (!prog.canExecute()) {
+ prog = sys::Program::FindProgramByName(*I);
+ if (prog.isEmpty())
+ return PrintAndReturn(std::string("Optimization program '") + *I +
+ "' is not found or not executable.");
+ }
+ // Get the program arguments
+ sys::Path tmp_output("opt_result");
+ std::string ErrMsg;
+ if (tmp_output.createTemporaryFileOnDisk(true, &ErrMsg)) {
+ return PrintAndReturn(ErrMsg);
+ }
+ const char* args[4];
+ args[0] = I->c_str();
+ args[1] = RealBytecodeOutput.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);
+ target.eraseFromDisk();
+ if (tmp_output.renamePathOnDisk(target, &ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 2;
+ }
+ } else
+ return PrintAndReturn(
+ "Post-link optimization output is not bytecode");
+ } else {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 2;
+ }
+ }
+ }
+
+ // If the user wants to generate a native executable, compile it from the
+ // bytecode file.
+ //
+ // Otherwise, create a script that will run the bytecode through the JIT.
+ if (Native) {
+ // Name of the Assembly Language output file
+ sys::Path AssemblyFile ( OutputFilename);
+ AssemblyFile.appendSuffix("s");
+
+ // Mark the output files for removal if we get an interrupt.
+ sys::RemoveFileOnSignal(AssemblyFile);
+ sys::RemoveFileOnSignal(sys::Path(OutputFilename));
+
+ // Determine the locations of the llc and gcc programs.
+ sys::Path llc = FindExecutable("llc", argv[0]);
+ if (llc.isEmpty())
+ return PrintAndReturn("Failed to find llc");
+
+ sys::Path gcc = FindExecutable("gcc", argv[0]);
+ if (gcc.isEmpty())
+ return PrintAndReturn("Failed to find gcc");
+
+ // Generate an assembly language file for the bytecode.
+ if (Verbose) llvm_cout << "Generating Assembly Code\n";
+ std::string ErrMsg;
+ if (0 != GenerateAssembly(AssemblyFile.toString(), RealBytecodeOutput,
+ llc, ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+
+ if (Verbose) llvm_cout << "Generating Native Code\n";
+ if (0 != GenerateNative(OutputFilename, AssemblyFile.toString(),
+ LinkItems,gcc,envp,ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+
+ // Remove the assembly language file.
+ AssemblyFile.eraseFromDisk();
+ } else if (NativeCBE) {
+ sys::Path CFile (OutputFilename);
+ CFile.appendSuffix("cbe.c");
+
+ // Mark the output files for removal if we get an interrupt.
+ sys::RemoveFileOnSignal(CFile);
+ sys::RemoveFileOnSignal(sys::Path(OutputFilename));
+
+ // Determine the locations of the llc and gcc programs.
+ sys::Path llc = FindExecutable("llc", argv[0]);
+ if (llc.isEmpty())
+ return PrintAndReturn("Failed to find llc");
+
+ sys::Path gcc = FindExecutable("gcc", argv[0]);
+ if (gcc.isEmpty())
+ return PrintAndReturn("Failed to find gcc");
+
+ // Generate an assembly language file for the bytecode.
+ if (Verbose) llvm_cout << "Generating Assembly Code\n";
+ std::string ErrMsg;
+ if (0 != GenerateCFile(
+ CFile.toString(), RealBytecodeOutput, llc, ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+
+ if (Verbose) llvm_cout << "Generating Native Code\n";
+ if (0 != GenerateNative(OutputFilename, CFile.toString(), LinkItems,
+ gcc, envp, ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+
+ // Remove the assembly language file.
+ CFile.eraseFromDisk();
+
+ } else {
+ EmitShellScript(argv);
+ }
+
+ // Make the script executable...
+ std::string ErrMsg;
+ if (sys::Path(OutputFilename).makeExecutableOnDisk(&ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+
+ // Make the bytecode file readable and directly executable in LLEE as well
+ if (sys::Path(RealBytecodeOutput).makeExecutableOnDisk(&ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+ if (sys::Path(RealBytecodeOutput).makeReadableOnDisk(&ErrMsg)) {
+ llvm_cerr << argv[0] << ": " << ErrMsg << "\n";
+ return 1;
+ }
+ }
- return 0;
+ return 0;
+ } catch (const std::string& msg) {
+ llvm_cerr << argv[0] << ": " << msg << "\n";
+ } catch (...) {
+ llvm_cerr << argv[0] << ": Unexpected unknown exception occurred.\n";
+ }
+ return 1;
}
projects / oota-llvm.git / blobdiff