Remove more unneeded files and directories from contrib/llvm. This

still allows us to build tblgen and clang, and further reduces the
footprint in the tree.

Approved by:	rpaulo (mentor)

1 files changed, 0 insertions, 369 deletions

diff --git a/contrib/llvm/tools/bugpoint/ExtractFunction.cpp b/contrib/llvm/tools/bugpoint/ExtractFunction.cpp
deleted file mode 100644
index 524f130..0000000
--- a/contrib/llvm/tools/bugpoint/ExtractFunction.cpp
+++ /dev/null
@@ -1,369 +0,0 @@
-//===- ExtractFunction.cpp - Extract a function from Program --------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file implements several methods that are used to extract functions,
-// loops, or portions of a module from the rest of the module.
-//
-//===----------------------------------------------------------------------===//
-
-#include "BugDriver.h"
-#include "llvm/Constants.h"
-#include "llvm/DerivedTypes.h"
-#include "llvm/LLVMContext.h"
-#include "llvm/Module.h"
-#include "llvm/PassManager.h"
-#include "llvm/Pass.h"
-#include "llvm/Analysis/Verifier.h"
-#include "llvm/Assembly/Writer.h"
-#include "llvm/Transforms/IPO.h"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Transforms/Utils/Cloning.h"
-#include "llvm/Transforms/Utils/FunctionUtils.h"
-#include "llvm/Target/TargetData.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/FileUtilities.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/System/Path.h"
-#include "llvm/System/Signals.h"
-#include <set>
-using namespace llvm;
-
-namespace llvm {
-  bool DisableSimplifyCFG = false;
-  extern cl::opt<std::string> OutputPrefix;
-} // End llvm namespace
-
-namespace {
-  cl::opt<bool>
-  NoDCE ("disable-dce",
-         cl::desc("Do not use the -dce pass to reduce testcases"));
-  cl::opt<bool, true>
-  NoSCFG("disable-simplifycfg", cl::location(DisableSimplifyCFG),
-         cl::desc("Do not use the -simplifycfg pass to reduce testcases"));
-}
-
-/// 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 *BugDriver::deleteInstructionFromProgram(const Instruction *I,
-                                                unsigned Simplification) {
-  // FIXME, use vmap?
-  Module *Clone = CloneModule(Program);
-
-  const BasicBlock *PBB = I->getParent();
-  const Function *PF = PBB->getParent();
-
-  Module::iterator RFI = Clone->begin(); // Get iterator to corresponding fn
-  std::advance(RFI, std::distance(PF->getParent()->begin(),
-                                  Module::const_iterator(PF)));
-
-  Function::iterator RBI = RFI->begin();  // Get iterator to corresponding BB
-  std::advance(RBI, std::distance(PF->begin(), Function::const_iterator(PBB)));
-
-  BasicBlock::iterator RI = RBI->begin(); // Get iterator to corresponding inst
-  std::advance(RI, std::distance(PBB->begin(), BasicBlock::const_iterator(I)));
-  Instruction *TheInst = RI;              // Got the corresponding instruction!
-
-  // If this instruction produces a value, replace any users with null values
-  if (!TheInst->getType()->isVoidTy())
-    TheInst->replaceAllUsesWith(Constant::getNullValue(TheInst->getType()));
-
-  // Remove the instruction from the program.
-  TheInst->getParent()->getInstList().erase(TheInst);
-
-  // Spiff up the output a little bit.
-  std::vector<std::string> Passes;
-
-  /// Can we get rid of the -disable-* options?
-  if (Simplification > 1 && !NoDCE)
-    Passes.push_back("dce");
-  if (Simplification && !DisableSimplifyCFG)
-    Passes.push_back("simplifycfg");      // Delete dead control flow
-
-  Passes.push_back("verify");
-  Module *New = runPassesOn(Clone, Passes);
-  delete Clone;
-  if (!New) {
-    errs() << "Instruction removal failed.  Sorry. :(  Please report a bug!\n";
-    exit(1);
-  }
-  return New;
-}
-
-/// performFinalCleanups - This method clones the current Program and performs
-/// a series of cleanups intended to get rid of extra cruft on the module
-/// before handing it to the user.
-///
-Module *BugDriver::performFinalCleanups(Module *M, bool MayModifySemantics) {
-  // Make all functions external, so GlobalDCE doesn't delete them...
-  for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I)
-    I->setLinkage(GlobalValue::ExternalLinkage);
-
-  std::vector<std::string> CleanupPasses;
-  CleanupPasses.push_back("globaldce");
-
-  if (MayModifySemantics)
-    CleanupPasses.push_back("deadarghaX0r");
-  else
-    CleanupPasses.push_back("deadargelim");
-
-  CleanupPasses.push_back("deadtypeelim");
-
-  Module *New = runPassesOn(M, CleanupPasses);
-  if (New == 0) {
-    errs() << "Final cleanups failed.  Sorry. :(  Please report a bug!\n";
-    return M;
-  }
-  delete M;
-  return New;
-}
-
-
-/// ExtractLoop - 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.
-Module *BugDriver::ExtractLoop(Module *M) {
-  std::vector<std::string> LoopExtractPasses;
-  LoopExtractPasses.push_back("loop-extract-single");
-
-  Module *NewM = runPassesOn(M, LoopExtractPasses);
-  if (NewM == 0) {
-    outs() << "*** Loop extraction failed: ";
-    EmitProgressBitcode(M, "loopextraction", true);
-    outs() << "*** Sorry. :(  Please report a bug!\n";
-    return 0;
-  }
-
-  // Check to see if we created any new functions.  If not, no loops were
-  // extracted and we should return null.  Limit the number of loops we extract
-  // to avoid taking forever.
-  static unsigned NumExtracted = 32;
-  if (M->size() == NewM->size() || --NumExtracted == 0) {
-    delete NewM;
-    return 0;
-  } else {
-    assert(M->size() < NewM->size() && "Loop extract removed functions?");
-    Module::iterator MI = NewM->begin();
-    for (unsigned i = 0, e = M->size(); i != e; ++i)
-      ++MI;
-  }
-
-  return NewM;
-}
-
-
-// DeleteFunctionBody - "Remove" the function by deleting all of its basic
-// blocks, making it external.
-//
-void llvm::DeleteFunctionBody(Function *F) {
-  // delete the body of the function...
-  F->deleteBody();
-  assert(F->isDeclaration() && "This didn't make the function external!");
-}
-
-/// GetTorInit - Given a list of entries for static ctors/dtors, return them
-/// as a constant array.
-static Constant *GetTorInit(std::vector<std::pair<Function*, int> > &TorList) {
-  assert(!TorList.empty() && "Don't create empty tor list!");
-  std::vector<Constant*> ArrayElts;
-  for (unsigned i = 0, e = TorList.size(); i != e; ++i) {
-    std::vector<Constant*> Elts;
-    Elts.push_back(ConstantInt::get(
-          Type::getInt32Ty(TorList[i].first->getContext()), TorList[i].second));
-    Elts.push_back(TorList[i].first);
-    ArrayElts.push_back(ConstantStruct::get(TorList[i].first->getContext(),
-                                            Elts, false));
-  }
-  return ConstantArray::get(ArrayType::get(ArrayElts[0]->getType(), 
-                                           ArrayElts.size()),
-                            ArrayElts);
-}
-
-/// SplitStaticCtorDtor - A module was recently split into two parts, M1/M2, and
-/// M1 has all of the global variables.  If M2 contains any functions that are
-/// static ctors/dtors, we need to add an llvm.global_[cd]tors global to M2, and
-/// prune appropriate entries out of M1s list.
-static void SplitStaticCtorDtor(const char *GlobalName, Module *M1, Module *M2,
-                                ValueMap<const Value*, Value*> &VMap) {
-  GlobalVariable *GV = M1->getNamedGlobal(GlobalName);
-  if (!GV || GV->isDeclaration() || GV->hasLocalLinkage() ||
-      !GV->use_empty()) return;
-  
-  std::vector<std::pair<Function*, int> > M1Tors, M2Tors;
-  ConstantArray *InitList = dyn_cast<ConstantArray>(GV->getInitializer());
-  if (!InitList) return;
-  
-  for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
-    if (ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i))){
-      if (CS->getNumOperands() != 2) return;  // Not array of 2-element structs.
-      
-      if (CS->getOperand(1)->isNullValue())
-        break;  // Found a null terminator, stop here.
-      
-      ConstantInt *CI = dyn_cast<ConstantInt>(CS->getOperand(0));
-      int Priority = CI ? CI->getSExtValue() : 0;
-      
-      Constant *FP = CS->getOperand(1);
-      if (ConstantExpr *CE = dyn_cast<ConstantExpr>(FP))
-        if (CE->isCast())
-          FP = CE->getOperand(0);
-      if (Function *F = dyn_cast<Function>(FP)) {
-        if (!F->isDeclaration())
-          M1Tors.push_back(std::make_pair(F, Priority));
-        else {
-          // Map to M2's version of the function.
-          F = cast<Function>(VMap[F]);
-          M2Tors.push_back(std::make_pair(F, Priority));
-        }
-      }
-    }
-  }
-  
-  GV->eraseFromParent();
-  if (!M1Tors.empty()) {
-    Constant *M1Init = GetTorInit(M1Tors);
-    new GlobalVariable(*M1, M1Init->getType(), false,
-                       GlobalValue::AppendingLinkage,
-                       M1Init, GlobalName);
-  }
-
-  GV = M2->getNamedGlobal(GlobalName);
-  assert(GV && "Not a clone of M1?");
-  assert(GV->use_empty() && "llvm.ctors shouldn't have uses!");
-
-  GV->eraseFromParent();
-  if (!M2Tors.empty()) {
-    Constant *M2Init = GetTorInit(M2Tors);
-    new GlobalVariable(*M2, M2Init->getType(), false,
-                       GlobalValue::AppendingLinkage,
-                       M2Init, GlobalName);
-  }
-}
-
-
-/// SplitFunctionsOutOfModule - 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.
-Module *
-llvm::SplitFunctionsOutOfModule(Module *M,
-                                const std::vector<Function*> &F,
-                                ValueMap<const Value*, Value*> &VMap) {
-  // Make sure functions & globals are all external so that linkage
-  // between the two modules will work.
-  for (Module::iterator I = M->begin(), E = M->end(); I != E; ++I)
-    I->setLinkage(GlobalValue::ExternalLinkage);
-  for (Module::global_iterator I = M->global_begin(), E = M->global_end();
-       I != E; ++I) {
-    if (I->hasName() && I->getName()[0] == '\01')
-      I->setName(I->getName().substr(1));
-    I->setLinkage(GlobalValue::ExternalLinkage);
-  }
-
-  ValueMap<const Value*, Value*> NewVMap;
-  Module *New = CloneModule(M, NewVMap);
-
-  // Make sure global initializers exist only in the safe module (CBE->.so)
-  for (Module::global_iterator I = New->global_begin(), E = New->global_end();
-       I != E; ++I)
-    I->setInitializer(0);  // Delete the initializer to make it external
-
-  // Remove the Test functions from the Safe module
-  std::set<Function *> TestFunctions;
-  for (unsigned i = 0, e = F.size(); i != e; ++i) {
-    Function *TNOF = cast<Function>(VMap[F[i]]);
-    DEBUG(errs() << "Removing function ");
-    DEBUG(WriteAsOperand(errs(), TNOF, false));
-    DEBUG(errs() << "\n");
-    TestFunctions.insert(cast<Function>(NewVMap[TNOF]));
-    DeleteFunctionBody(TNOF);       // Function is now external in this module!
-  }
-
-  
-  // Remove the Safe functions from the Test module
-  for (Module::iterator I = New->begin(), E = New->end(); I != E; ++I)
-    if (!TestFunctions.count(I))
-      DeleteFunctionBody(I);
-  
-
-  // Make sure that there is a global ctor/dtor array in both halves of the
-  // module if they both have static ctor/dtor functions.
-  SplitStaticCtorDtor("llvm.global_ctors", M, New, NewVMap);
-  SplitStaticCtorDtor("llvm.global_dtors", M, New, NewVMap);
-  
-  return New;
-}
-
-//===----------------------------------------------------------------------===//
-// Basic Block Extraction Code
-//===----------------------------------------------------------------------===//
-
-/// ExtractMappedBlocksFromModule - 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.
-Module *BugDriver::ExtractMappedBlocksFromModule(const
-                                                 std::vector<BasicBlock*> &BBs,
-                                                 Module *M) {
-  sys::Path uniqueFilename(OutputPrefix + "-extractblocks");
-  std::string ErrMsg;
-  if (uniqueFilename.createTemporaryFileOnDisk(true, &ErrMsg)) {
-    outs() << "*** Basic Block extraction failed!\n";
-    errs() << "Error creating temporary file: " << ErrMsg << "\n";
-    EmitProgressBitcode(M, "basicblockextractfail", true);
-    return 0;
-  }
-  sys::RemoveFileOnSignal(uniqueFilename);
-
-  std::string ErrorInfo;
-  tool_output_file BlocksToNotExtractFile(uniqueFilename.c_str(), ErrorInfo);
-  if (!ErrorInfo.empty()) {
-    outs() << "*** Basic Block extraction failed!\n";
-    errs() << "Error writing list of blocks to not extract: " << ErrorInfo
-           << "\n";
-    EmitProgressBitcode(M, "basicblockextractfail", true);
-    return 0;
-  }
-  for (std::vector<BasicBlock*>::const_iterator I = BBs.begin(), E = BBs.end();
-       I != E; ++I) {
-    BasicBlock *BB = *I;
-    // If the BB doesn't have a name, give it one so we have something to key
-    // off of.
-    if (!BB->hasName()) BB->setName("tmpbb");
-    BlocksToNotExtractFile.os() << BB->getParent()->getNameStr() << " "
-                                << BB->getName() << "\n";
-  }
-  BlocksToNotExtractFile.os().close();
-  if (BlocksToNotExtractFile.os().has_error()) {
-    errs() << "Error writing list of blocks to not extract: " << ErrorInfo
-           << "\n";
-    EmitProgressBitcode(M, "basicblockextractfail", true);
-    BlocksToNotExtractFile.os().clear_error();
-    return 0;
-  }
-  BlocksToNotExtractFile.keep();
-
-  std::string uniqueFN = "--extract-blocks-file=" + uniqueFilename.str();
-  const char *ExtraArg = uniqueFN.c_str();
-
-  std::vector<std::string> PI;
-  PI.push_back("extract-blocks");
-  Module *Ret = runPassesOn(M, PI, false, 1, &ExtraArg);
-
-  uniqueFilename.eraseFromDisk(); // Free disk space
-
-  if (Ret == 0) {
-    outs() << "*** Basic Block extraction failed, please report a bug!\n";
-    EmitProgressBitcode(M, "basicblockextractfail", true);
-  }
-  return Ret;
-}