1 files changed, 0 insertions, 211 deletions
diff --git a/contrib/llvm/lib/Transforms/Instrumentation/InstrOrderFile.cpp b/contrib/llvm/lib/Transforms/Instrumentation/InstrOrderFile.cpp
deleted file mode 100644
index a2c1ddfd279e..000000000000
--- a/contrib/llvm/lib/Transforms/Instrumentation/InstrOrderFile.cpp
+++ /dev/null
@@ -1,211 +0,0 @@
-//===- InstrOrderFile.cpp ---- Late IR instrumentation for order file ----===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/ADT/Statistic.h"
-#include "llvm/IR/CallSite.h"
-#include "llvm/IR/Constants.h"
-#include "llvm/IR/Function.h"
-#include "llvm/IR/GlobalValue.h"
-#include "llvm/IR/IRBuilder.h"
-#include "llvm/IR/Instruction.h"
-#include "llvm/IR/Instructions.h"
-#include "llvm/IR/Metadata.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Pass.h"
-#include "llvm/PassRegistry.h"
-#include "llvm/ProfileData/InstrProf.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/FileSystem.h"
-#include "llvm/Support/Path.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Transforms/Instrumentation.h"
-#include "llvm/Transforms/Instrumentation/InstrOrderFile.h"
-#include <fstream>
-#include <map>
-#include <mutex>
-#include <set>
-#include <sstream>
-
-using namespace llvm;
-#define DEBUG_TYPE "instrorderfile"
-
-static cl::opt<std::string> ClOrderFileWriteMapping(
-    "orderfile-write-mapping", cl::init(""),
-    cl::desc(
-        "Dump functions and their MD5 hash to deobfuscate profile data"),
-    cl::Hidden);
-
-namespace {
-
-// We need a global bitmap to tell if a function is executed. We also
-// need a global variable to save the order of functions. We can use a
-// fixed-size buffer that saves the MD5 hash of the function. We need
-// a global variable to save the index into the buffer.
-
-std::mutex MappingMutex;
-
-struct InstrOrderFile {
-private:
-  GlobalVariable *OrderFileBuffer;
-  GlobalVariable *BufferIdx;
-  GlobalVariable *BitMap;
-  ArrayType *BufferTy;
-  ArrayType *MapTy;
-
-public:
-  InstrOrderFile() {}
-
-  void createOrderFileData(Module &M) {
-    LLVMContext &Ctx = M.getContext();
-    int NumFunctions = 0;
-    for (Function &F : M) {
-      if (!F.isDeclaration())
-        NumFunctions++;
-    }
-
-    BufferTy =
-        ArrayType::get(Type::getInt64Ty(Ctx), INSTR_ORDER_FILE_BUFFER_SIZE);
-    Type *IdxTy = Type::getInt32Ty(Ctx);
-    MapTy = ArrayType::get(Type::getInt8Ty(Ctx), NumFunctions);
-
-    // Create the global variables.
-    std::string SymbolName = INSTR_PROF_ORDERFILE_BUFFER_NAME_STR;
-    OrderFileBuffer = new GlobalVariable(M, BufferTy, false, GlobalValue::LinkOnceODRLinkage,
-                           Constant::getNullValue(BufferTy), SymbolName);
-    Triple TT = Triple(M.getTargetTriple());
-    OrderFileBuffer->setSection(
-        getInstrProfSectionName(IPSK_orderfile, TT.getObjectFormat()));
-
-    std::string IndexName = INSTR_PROF_ORDERFILE_BUFFER_IDX_NAME_STR;
-    BufferIdx = new GlobalVariable(M, IdxTy, false, GlobalValue::LinkOnceODRLinkage,
-                           Constant::getNullValue(IdxTy), IndexName);
-
-    std::string BitMapName = "bitmap_0";
-    BitMap = new GlobalVariable(M, MapTy, false, GlobalValue::PrivateLinkage,
-                                Constant::getNullValue(MapTy), BitMapName);
-  }
-
-  // Generate the code sequence in the entry block of each function to
-  // update the buffer.
-  void generateCodeSequence(Module &M, Function &F, int FuncId) {
-    if (!ClOrderFileWriteMapping.empty()) {
-      std::lock_guard<std::mutex> LogLock(MappingMutex);
-      std::error_code EC;
-      llvm::raw_fd_ostream OS(ClOrderFileWriteMapping, EC, llvm::sys::fs::F_Append);
-      if (EC) {
-        report_fatal_error(Twine("Failed to open ") + ClOrderFileWriteMapping +
-                           " to save mapping file for order file instrumentation\n");
-      } else {
-        std::stringstream stream;
-        stream << std::hex << MD5Hash(F.getName());
-        std::string singleLine = "MD5 " + stream.str() + " " +
-                                 std::string(F.getName()) + '\n';
-        OS << singleLine;
-      }
-    }
-
-    BasicBlock *OrigEntry = &F.getEntryBlock();
-
-    LLVMContext &Ctx = M.getContext();
-    IntegerType *Int32Ty = Type::getInt32Ty(Ctx);
-    IntegerType *Int8Ty = Type::getInt8Ty(Ctx);
-
-    // Create a new entry block for instrumentation. We will check the bitmap
-    // in this basic block.
-    BasicBlock *NewEntry =
-        BasicBlock::Create(M.getContext(), "order_file_entry", &F, OrigEntry);
-    IRBuilder<> entryB(NewEntry);
-    // Create a basic block for updating the circular buffer.
-    BasicBlock *UpdateOrderFileBB =
-        BasicBlock::Create(M.getContext(), "order_file_set", &F, OrigEntry);
-    IRBuilder<> updateB(UpdateOrderFileBB);
-
-    // Check the bitmap, if it is already 1, do nothing.
-    // Otherwise, set the bit, grab the index, update the buffer.
-    Value *IdxFlags[] = {ConstantInt::get(Int32Ty, 0),
-                         ConstantInt::get(Int32Ty, FuncId)};
-    Value *MapAddr = entryB.CreateGEP(MapTy, BitMap, IdxFlags, "");
-    LoadInst *loadBitMap = entryB.CreateLoad(Int8Ty, MapAddr, "");
-    entryB.CreateStore(ConstantInt::get(Int8Ty, 1), MapAddr);
-    Value *IsNotExecuted =
-        entryB.CreateICmpEQ(loadBitMap, ConstantInt::get(Int8Ty, 0));
-    entryB.CreateCondBr(IsNotExecuted, UpdateOrderFileBB, OrigEntry);
-
-    // Fill up UpdateOrderFileBB: grab the index, update the buffer!
-    Value *IdxVal = updateB.CreateAtomicRMW(
-        AtomicRMWInst::Add, BufferIdx, ConstantInt::get(Int32Ty, 1),
-        AtomicOrdering::SequentiallyConsistent);
-    // We need to wrap around the index to fit it inside the buffer.
-    Value *WrappedIdx = updateB.CreateAnd(
-        IdxVal, ConstantInt::get(Int32Ty, INSTR_ORDER_FILE_BUFFER_MASK));
-    Value *BufferGEPIdx[] = {ConstantInt::get(Int32Ty, 0), WrappedIdx};
-    Value *BufferAddr =
-        updateB.CreateGEP(BufferTy, OrderFileBuffer, BufferGEPIdx, "");
-    updateB.CreateStore(ConstantInt::get(Type::getInt64Ty(Ctx), MD5Hash(F.getName())),
-                        BufferAddr);
-    updateB.CreateBr(OrigEntry);
-  }
-
-  bool run(Module &M) {
-    createOrderFileData(M);
-
-    int FuncId = 0;
-    for (Function &F : M) {
-      if (F.isDeclaration())
-        continue;
-      generateCodeSequence(M, F, FuncId);
-      ++FuncId;
-    }
-
-    return true;
-  }
-
-}; // End of InstrOrderFile struct
-
-class InstrOrderFileLegacyPass : public ModulePass {
-public:
-  static char ID;
-
-  InstrOrderFileLegacyPass() : ModulePass(ID) {
-    initializeInstrOrderFileLegacyPassPass(
-        *PassRegistry::getPassRegistry());
-  }
-
-  bool runOnModule(Module &M) override;
-};
-
-} // End anonymous namespace
-
-bool InstrOrderFileLegacyPass::runOnModule(Module &M) {
-  if (skipModule(M))
-    return false;
-
-  return InstrOrderFile().run(M);
-}
-
-PreservedAnalyses
-InstrOrderFilePass::run(Module &M, ModuleAnalysisManager &AM) {
-  if (InstrOrderFile().run(M))
-    return PreservedAnalyses::none();
-  return PreservedAnalyses::all();
-}
-
-INITIALIZE_PASS_BEGIN(InstrOrderFileLegacyPass, "instrorderfile",
-                      "Instrumentation for Order File", false, false)
-INITIALIZE_PASS_END(InstrOrderFileLegacyPass, "instrorderfile",
-                    "Instrumentation for Order File", false, false)
-
-char InstrOrderFileLegacyPass::ID = 0;
-
-ModulePass *llvm::createInstrOrderFilePass() {
-  return new InstrOrderFileLegacyPass();
-}