Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/lib/Analysis/MemDerefPrinter.cpp

@@ -1,76 +0,0 @@
-//===- MemDerefPrinter.cpp - Printer for isDereferenceablePointer ---------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Analysis/Loads.h"
-#include "llvm/Analysis/Passes.h"
-#include "llvm/IR/CallSite.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/InstIterator.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/Module.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/raw_ostream.h"
-using namespace llvm;
-
-namespace {
-  struct MemDerefPrinter : public FunctionPass {
-    SmallVector<Value *, 4> Deref;
-    SmallPtrSet<Value *, 4> DerefAndAligned;
-
-    static char ID; // Pass identification, replacement for typeid
-    MemDerefPrinter() : FunctionPass(ID) {
-      initializeMemDerefPrinterPass(*PassRegistry::getPassRegistry());
-    }
-    void getAnalysisUsage(AnalysisUsage &AU) const override {
-      AU.setPreservesAll();
-    }
-    bool runOnFunction(Function &F) override;
-    void print(raw_ostream &OS, const Module * = nullptr) const override;
-    void releaseMemory() override {
-      Deref.clear();
-      DerefAndAligned.clear();
-    }
-  };
-}
-
-char MemDerefPrinter::ID = 0;
-INITIALIZE_PASS_BEGIN(MemDerefPrinter, "print-memderefs",
-                      "Memory Dereferenciblity of pointers in function", false, true)
-INITIALIZE_PASS_END(MemDerefPrinter, "print-memderefs",
-                    "Memory Dereferenciblity of pointers in function", false, true)
-
-FunctionPass *llvm::createMemDerefPrinter() {
-  return new MemDerefPrinter();
-}
-
-bool MemDerefPrinter::runOnFunction(Function &F) {
-  const DataLayout &DL = F.getParent()->getDataLayout();
-  for (auto &I: instructions(F)) {
-    if (LoadInst *LI = dyn_cast<LoadInst>(&I)) {
-      Value *PO = LI->getPointerOperand();
-      if (isDereferenceablePointer(PO, DL))
-        Deref.push_back(PO);
-      if (isDereferenceableAndAlignedPointer(PO, LI->getAlignment(), DL))
-        DerefAndAligned.insert(PO);
-    }
-  }
-  return false;
-}
-
-void MemDerefPrinter::print(raw_ostream &OS, const Module *M) const {
-  OS << "The following are dereferenceable:\n";
-  for (Value *V: Deref) {
-    V->print(OS);
-    if (DerefAndAligned.count(V))
-      OS << "\t(aligned)";
-    else
-      OS << "\t(unaligned)";
-    OS << "\n\n";
-  }
-}