Content moved to llvm-ld.cpp

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18049 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 352 deletions

diff --git a/tools/llvm-ld/GenerateCode.cpp b/tools/llvm-ld/GenerateCode.cpp
deleted file mode 100644
index 4f94633a60..0000000000
--- a/tools/llvm-ld/GenerateCode.cpp
+++ /dev/null
@@ -1,352 +0,0 @@
-//===- GenerateCode.cpp - Functions for generating executable files  ------===//
-// 
-//                     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 contains functions for generating executable files once linking
-// has finished.  This includes generating a shell script to run the JIT or
-// a native executable derived from the bytecode.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm-ld.h"
-#include "llvm/Linker.h"
-#include "llvm/Module.h"
-#include "llvm/PassManager.h"
-#include "llvm/Analysis/LoadValueNumbering.h"
-#include "llvm/Analysis/Passes.h"
-#include "llvm/Analysis/Verifier.h"
-#include "llvm/Bytecode/WriteBytecodePass.h"
-#include "llvm/Target/TargetData.h"
-#include "llvm/Transforms/IPO.h"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Support/SystemUtils.h"
-#include "llvm/Support/CommandLine.h"
-using namespace llvm;
-
-namespace {
-  cl::opt<bool>
-  DisableInline("disable-inlining", cl::desc("Do not run the inliner pass"));
-
-  cl::opt<bool>
-  Verify("verify", cl::desc("Verify intermediate results of all passes"));
-
-  cl::opt<bool>
-  DisableOptimizations("disable-opt",
-                       cl::desc("Do not run any optimization passes"));
-}
-
-/// 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;
-}
-
-static inline void addPass(PassManager &PM, Pass *P) {
-  // Add the pass to the pass manager...
-  PM.add(P);
-  
-  // If we are verifying all of the intermediate steps, add the verifier...
-  if (Verify) PM.add(createVerifierPass());
-}
-
-/// GenerateBytecode - generates a bytecode file from the specified module.
-///
-/// Inputs:
-///  M           - The module for which bytecode should be generated.
-///  Strip       - Flags whether symbols should be stripped from the output.
-///  Internalize - Flags whether all symbols should be marked internal.
-///  Out         - Pointer to file stream to which to write the output.
-///
-/// Returns non-zero value on error.
-///
-int llvm::GenerateBytecode(Module *M, bool Strip, bool Internalize,
-                           std::ostream *Out) {
-  // In addition to just linking the input from GCC, we also want to spiff it up
-  // a little bit.  Do this now.
-  PassManager Passes;
-
-  if (Verify) Passes.add(createVerifierPass());
-
-  // Add an appropriate TargetData instance for this module...
-  addPass(Passes, new TargetData("gccld", M));
-
-  // Often if the programmer does not specify proper prototypes for the
-  // functions they are calling, they end up calling a vararg version of the
-  // function that does not get a body filled in (the real function has typed
-  // arguments).  This pass merges the two functions.
-  addPass(Passes, createFunctionResolvingPass());
-
-  if (!DisableOptimizations) {
-    if (Internalize) {
-      // Now that composite has been compiled, scan through the module, looking
-      // for a main function.  If main is defined, mark all other functions
-      // internal.
-      addPass(Passes, createInternalizePass());
-    }
-
-    // Now that we internalized some globals, see if we can hack on them!
-    addPass(Passes, createGlobalOptimizerPass());
-
-    // Linking modules together can lead to duplicated global constants, only
-    // keep one copy of each constant...
-    addPass(Passes, createConstantMergePass());
-
-    // If the -s command line option was specified, strip the symbols out of the
-    // resulting program to make it smaller.  -s is a GCC option that we are
-    // supporting.
-    if (Strip)
-      addPass(Passes, createSymbolStrippingPass());
-
-    // Propagate constants at call sites into the functions they call.
-    addPass(Passes, createIPConstantPropagationPass());
-
-    // Remove unused arguments from functions...
-    addPass(Passes, createDeadArgEliminationPass());
-
-    if (!DisableInline)
-      addPass(Passes, createFunctionInliningPass()); // Inline small functions
-
-    addPass(Passes, createPruneEHPass());            // Remove dead EH info
-    addPass(Passes, createGlobalDCEPass());          // Remove dead functions
-
-    // If we didn't decide to inline a function, check to see if we can
-    // transform it to pass arguments by value instead of by reference.
-    addPass(Passes, createArgumentPromotionPass());
-
-    // The IPO passes may leave cruft around.  Clean up after them.
-    addPass(Passes, createInstructionCombiningPass());
-
-    addPass(Passes, createScalarReplAggregatesPass()); // Break up allocas
-
-    // Run a few AA driven optimizations here and now, to cleanup the code.
-    addPass(Passes, createGlobalsModRefPass());      // IP alias analysis
-
-    addPass(Passes, createLICMPass());               // Hoist loop invariants
-    addPass(Passes, createLoadValueNumberingPass()); // GVN for load instrs
-    addPass(Passes, createGCSEPass());               // Remove common subexprs
-    addPass(Passes, createDeadStoreEliminationPass()); // Nuke dead stores
-
-    // Cleanup and simplify the code after the scalar optimizations.
-    addPass(Passes, createInstructionCombiningPass());
-
-    // Delete basic blocks, which optimization passes may have killed...
-    addPass(Passes, createCFGSimplificationPass());
-
-    // Now that we have optimized the program, discard unreachable functions...
-    addPass(Passes, createGlobalDCEPass());
-  }
-
-  // Make sure everything is still good.
-  Passes.add(createVerifierPass());
-
-  // Add the pass that writes bytecode to the output file...
-  addPass(Passes, new WriteBytecodePass(Out));
-
-  // Run our queue of passes all at once now, efficiently.
-  Passes.run(*M);
-
-  return 0;
-}
-
-/// GenerateAssembly - generates a native assembly language source file from the
-/// specified bytecode file.
-///
-/// Inputs:
-///  InputFilename  - The name of the output 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.
-///
-int llvm::GenerateAssembly(const std::string &OutputFilename,
-                           const std::string &InputFilename,
-                           const std::string &llc,
-                           char ** const envp) {
-  // Run LLC to convert the bytecode file into assembly code.
-  const char *cmd[6];
-  cmd[0] = llc.c_str();
-  cmd[1] = "-f";
-  cmd[2] = "-o";
-  cmd[3] = OutputFilename.c_str();
-  cmd[4] = InputFilename.c_str();
-  cmd[5] = 0;
-
-  return ExecWait(cmd, envp);
-}
-
-/// GenerateAssembly - generates a native assembly language source file from the
-/// specified bytecode file.
-int llvm::GenerateCFile(const std::string &OutputFile,
-                        const std::string &InputFile,
-                        const std::string &llc, char ** const envp) {
-  // Run LLC to convert the bytecode file into C.
-  const char *cmd[7];
-
-  cmd[0] = llc.c_str();
-  cmd[1] = "-march=c";
-  cmd[2] = "-f";
-  cmd[3] = "-o";
-  cmd[4] = OutputFile.c_str();
-  cmd[5] = InputFile.c_str();
-  cmd[6] = 0;
-  return ExecWait(cmd, envp);
-}
-
-/// GenerateNative - generates a native assembly language source file from the
-/// specified assembly source file.
-///
-/// Inputs:
-///  InputFilename  - The name of the output bytecode file.
-///  OutputFilename - The name of the file to generate.
-///  Libraries      - The list of libraries 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.
-///
-int llvm::GenerateNative(const std::string &OutputFilename,
-                         const std::string &InputFilename,
-                         const std::vector<std::string> &Libraries,
-                         const std::vector<std::string> &LibPaths,
-                         const std::string &gcc, char ** const envp) {
-  // 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);
-
-  std::vector<const char *> cmd;
-
-  // 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.
-  cmd.push_back(gcc.c_str());
-  cmd.push_back("-fno-strict-aliasing");
-  cmd.push_back("-O3");
-  cmd.push_back("-o");
-  cmd.push_back(OutputFilename.c_str());
-  cmd.push_back(InputFilename.c_str());
-
-  // Adding the library paths creates a problem for native generation.  If we
-  // include the search paths from llvmgcc, then we'll be telling normal gcc
-  // to look inside of llvmgcc's library directories for libraries.  This is
-  // bad because those libraries hold only bytecode files (not native object
-  // files).  In the end, we attempt to link the bytecode libgcc into a native
-  // program.
-#if 0
-  // Add in the library path options.
-  for (unsigned index=0; index < LibPaths.size(); index++) {
-    cmd.push_back("-L");
-    cmd.push_back(LibPaths[index].c_str());
-  }
-#endif
-
-  // Add in the libraries to link.
-  std::vector<std::string> Libs(Libraries);
-  for (unsigned index = 0; index < Libs.size(); index++) {
-    if (Libs[index] != "crtend") {
-      Libs[index] = "-l" + Libs[index];
-      cmd.push_back(Libs[index].c_str());
-    }
-  }
-  cmd.push_back(NULL);
-
-  // Run the compiler to assembly and link together the program.
-  return ExecWait(&(cmd[0]), clean_env);
-}
-