Remove LLVM 8.0.1 files.

1 files changed, 0 insertions, 422 deletions

diff --git a/gnu/llvm/tools/bugpoint/ExtractFunction.cpp b/gnu/llvm/tools/bugpoint/ExtractFunction.cpp
deleted file mode 100644
index 48f1575c25e..00000000000
--- a/gnu/llvm/tools/bugpoint/ExtractFunction.cpp
+++ /dev/null
@@ -1,422 +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/IR/Constants.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/DerivedTypes.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/LegacyPassManager.h"
-#include "llvm/IR/Module.h"
-#include "llvm/IR/Verifier.h"
-#include "llvm/Pass.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/FileUtilities.h"
-#include "llvm/Support/Path.h"
-#include "llvm/Support/Signals.h"
-#include "llvm/Support/ToolOutputFile.h"
-#include "llvm/Transforms/IPO.h"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Transforms/Utils/Cloning.h"
-#include "llvm/Transforms/Utils/CodeExtractor.h"
-#include <set>
-using namespace llvm;
-
-#define DEBUG_TYPE "bugpoint"
-
-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"));
-
-Function *globalInitUsesExternalBA(GlobalVariable *GV) {
-  if (!GV->hasInitializer())
-    return nullptr;
-
-  Constant *I = GV->getInitializer();
-
-  // walk the values used by the initializer
-  // (and recurse into things like ConstantExpr)
-  std::vector<Constant *> Todo;
-  std::set<Constant *> Done;
-  Todo.push_back(I);
-
-  while (!Todo.empty()) {
-    Constant *V = Todo.back();
-    Todo.pop_back();
-    Done.insert(V);
-
-    if (BlockAddress *BA = dyn_cast<BlockAddress>(V)) {
-      Function *F = BA->getFunction();
-      if (F->isDeclaration())
-        return F;
-    }
-
-    for (User::op_iterator i = V->op_begin(), e = V->op_end(); i != e; ++i) {
-      Constant *C = dyn_cast<Constant>(*i);
-      if (C && !isa<GlobalValue>(C) && !Done.count(C))
-        Todo.push_back(C);
-    }
-  }
-  return nullptr;
-}
-} // end anonymous namespace
-
-std::unique_ptr<Module>
-BugDriver::deleteInstructionFromProgram(const Instruction *I,
-                                        unsigned Simplification) {
-  // FIXME, use vmap?
-  std::unique_ptr<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");
-  std::unique_ptr<Module> New = runPassesOn(Clone.get(), Passes);
-  if (!New) {
-    errs() << "Instruction removal failed.  Sorry. :(  Please report a bug!\n";
-    exit(1);
-  }
-  return New;
-}
-
-std::unique_ptr<Module>
-BugDriver::performFinalCleanups(std::unique_ptr<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");
-
-  std::unique_ptr<Module> New = runPassesOn(M.get(), CleanupPasses);
-  if (!New) {
-    errs() << "Final cleanups failed.  Sorry. :(  Please report a bug!\n";
-    return nullptr;
-  }
-  return New;
-}
-
-std::unique_ptr<Module> BugDriver::extractLoop(Module *M) {
-  std::vector<std::string> LoopExtractPasses;
-  LoopExtractPasses.push_back("loop-extract-single");
-
-  std::unique_ptr<Module> NewM = runPassesOn(M, LoopExtractPasses);
-  if (!NewM) {
-    outs() << "*** Loop extraction failed: ";
-    EmitProgressBitcode(*M, "loopextraction", true);
-    outs() << "*** Sorry. :(  Please report a bug!\n";
-    return nullptr;
-  }
-
-  // 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) {
-    return nullptr;
-  } 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;
-}
-
-static void eliminateAliases(GlobalValue *GV) {
-  // First, check whether a GlobalAlias references this definition.
-  // GlobalAlias MAY NOT reference declarations.
-  for (;;) {
-    // 1. Find aliases
-    SmallVector<GlobalAlias *, 1> aliases;
-    Module *M = GV->getParent();
-    for (Module::alias_iterator I = M->alias_begin(), E = M->alias_end();
-         I != E; ++I)
-      if (I->getAliasee()->stripPointerCasts() == GV)
-        aliases.push_back(&*I);
-    if (aliases.empty())
-      break;
-    // 2. Resolve aliases
-    for (unsigned i = 0, e = aliases.size(); i < e; ++i) {
-      aliases[i]->replaceAllUsesWith(aliases[i]->getAliasee());
-      aliases[i]->eraseFromParent();
-    }
-    // 3. Repeat until no more aliases found; there might
-    // be an alias to an alias...
-  }
-}
-
-//
-// DeleteGlobalInitializer - "Remove" the global variable by deleting its
-// initializer,
-// making it external.
-//
-void llvm::DeleteGlobalInitializer(GlobalVariable *GV) {
-  eliminateAliases(GV);
-  GV->setInitializer(nullptr);
-  GV->setComdat(nullptr);
-}
-
-// DeleteFunctionBody - "Remove" the function by deleting all of its basic
-// blocks, making it external.
-//
-void llvm::DeleteFunctionBody(Function *F) {
-  eliminateAliases(F);
-  // Function declarations can't have comdats.
-  F->setComdat(nullptr);
-
-  // 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;
-  Type *Int32Ty = Type::getInt32Ty(TorList[0].first->getContext());
-
-  StructType *STy = StructType::get(Int32Ty, TorList[0].first->getType());
-  for (unsigned i = 0, e = TorList.size(); i != e; ++i) {
-    Constant *Elts[] = {ConstantInt::get(Int32Ty, TorList[i].second),
-                        TorList[i].first};
-    ArrayElts.push_back(ConstantStruct::get(STy, Elts));
-  }
-  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,
-                                ValueToValueMapTy &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);
-  }
-}
-
-std::unique_ptr<Module>
-llvm::SplitFunctionsOutOfModule(Module *M, const std::vector<Function *> &F,
-                                ValueToValueMapTy &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);
-  }
-
-  ValueToValueMapTy NewVMap;
-  std::unique_ptr<Module> New = CloneModule(*M, NewVMap);
-
-  // 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]]);
-    LLVM_DEBUG(errs() << "Removing function ");
-    LLVM_DEBUG(TNOF->printAsOperand(errs(), false));
-    LLVM_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 (Function &I : *New)
-    if (!TestFunctions.count(&I))
-      DeleteFunctionBody(&I);
-
-  // Try to split the global initializers evenly
-  for (GlobalVariable &I : M->globals()) {
-    GlobalVariable *GV = cast<GlobalVariable>(NewVMap[&I]);
-    if (Function *TestFn = globalInitUsesExternalBA(&I)) {
-      if (Function *SafeFn = globalInitUsesExternalBA(GV)) {
-        errs() << "*** Error: when reducing functions, encountered "
-                  "the global '";
-        GV->printAsOperand(errs(), false);
-        errs() << "' with an initializer that references blockaddresses "
-                  "from safe function '"
-               << SafeFn->getName() << "' and from test function '"
-               << TestFn->getName() << "'.\n";
-        exit(1);
-      }
-      DeleteGlobalInitializer(&I); // Delete the initializer to make it external
-    } else {
-      // If we keep it in the safe module, then delete it in the test module
-      DeleteGlobalInitializer(GV);
-    }
-  }
-
-  // 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.get(), NewVMap);
-  SplitStaticCtorDtor("llvm.global_dtors", M, New.get(), NewVMap);
-
-  return New;
-}
-
-//===----------------------------------------------------------------------===//
-// Basic Block Extraction Code
-//===----------------------------------------------------------------------===//
-
-std::unique_ptr<Module>
-BugDriver::extractMappedBlocksFromModule(const std::vector<BasicBlock *> &BBs,
-                                         Module *M) {
-  auto Temp = sys::fs::TempFile::create(OutputPrefix + "-extractblocks%%%%%%%");
-  if (!Temp) {
-    outs() << "*** Basic Block extraction failed!\n";
-    errs() << "Error creating temporary file: " << toString(Temp.takeError())
-           << "\n";
-    EmitProgressBitcode(*M, "basicblockextractfail", true);
-    return nullptr;
-  }
-  DiscardTemp Discard{*Temp};
-
-  // Extract all of the blocks except the ones in BBs.
-  SmallVector<BasicBlock *, 32> BlocksToExtract;
-  for (Function &F : *M)
-    for (BasicBlock &BB : F)
-      // Check if this block is going to be extracted.
-      if (std::find(BBs.begin(), BBs.end(), &BB) == BBs.end())
-        BlocksToExtract.push_back(&BB);
-
-  raw_fd_ostream OS(Temp->FD, /*shouldClose*/ false);
-  for (BasicBlock *BB : BBs) {
-    // 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");
-    OS << BB->getParent()->getName() << " " << BB->getName() << "\n";
-  }
-  OS.flush();
-  if (OS.has_error()) {
-    errs() << "Error writing list of blocks to not extract\n";
-    EmitProgressBitcode(*M, "basicblockextractfail", true);
-    OS.clear_error();
-    return nullptr;
-  }
-
-  std::string uniqueFN = "--extract-blocks-file=";
-  uniqueFN += Temp->TmpName;
-  const char *ExtraArg = uniqueFN.c_str();
-
-  std::vector<std::string> PI;
-  PI.push_back("extract-blocks");
-  std::unique_ptr<Module> Ret = runPassesOn(M, PI, 1, &ExtraArg);
-
-  if (!Ret) {
-    outs() << "*** Basic Block extraction failed, please report a bug!\n";
-    EmitProgressBitcode(*M, "basicblockextractfail", true);
-  }
-  return Ret;
-}