Imported Upstream version 5.18.0.247

Former-commit-id: 2d6af2e4ed0eda5cbdc2946446ef7718456ad190

external/llvm/tools/llvm-diff/llvm-diff.cpp

@@ -1,92 +0,0 @@
-//===-- llvm-diff.cpp - Module comparator command-line driver ---*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This file defines the command-line driver for the difference engine.
-//
-//===----------------------------------------------------------------------===//
-
-#include "DiffLog.h"
-#include "DifferenceEngine.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/IR/LLVMContext.h"
-#include "llvm/IR/Module.h"
-#include "llvm/IR/Type.h"
-#include "llvm/IRReader/IRReader.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/MemoryBuffer.h"
-#include "llvm/Support/SourceMgr.h"
-#include "llvm/Support/raw_ostream.h"
-#include <string>
-#include <utility>
-
-
-using namespace llvm;
-
-/// Reads a module from a file.  On error, messages are written to stderr
-/// and null is returned.
-static std::unique_ptr<Module> readModule(LLVMContext &Context,
-                                          StringRef Name) {
-  SMDiagnostic Diag;
-  std::unique_ptr<Module> M = parseIRFile(Name, Diag, Context);
-  if (!M)
-    Diag.print("llvm-diff", errs());
-  return M;
-}
-
-static void diffGlobal(DifferenceEngine &Engine, Module &L, Module &R,
-                       StringRef Name) {
-  // Drop leading sigils from the global name.
-  if (Name.startswith("@")) Name = Name.substr(1);
-
-  Function *LFn = L.getFunction(Name);
-  Function *RFn = R.getFunction(Name);
-  if (LFn && RFn)
-    Engine.diff(LFn, RFn);
-  else if (!LFn && !RFn)
-    errs() << "No function named @" << Name << " in either module\n";
-  else if (!LFn)
-    errs() << "No function named @" << Name << " in left module\n";
-  else
-    errs() << "No function named @" << Name << " in right module\n";
-}
-
-static cl::opt<std::string> LeftFilename(cl::Positional,
-                                         cl::desc("<first file>"),
-                                         cl::Required);
-static cl::opt<std::string> RightFilename(cl::Positional,
-                                          cl::desc("<second file>"),
-                                          cl::Required);
-static cl::list<std::string> GlobalsToCompare(cl::Positional,
-                                              cl::desc("<globals to compare>"));
-
-int main(int argc, char **argv) {
-  cl::ParseCommandLineOptions(argc, argv);
-
-  LLVMContext Context;
-
-  // Load both modules.  Die if that fails.
-  std::unique_ptr<Module> LModule = readModule(Context, LeftFilename);
-  std::unique_ptr<Module> RModule = readModule(Context, RightFilename);
-  if (!LModule || !RModule) return 1;
-
-  DiffConsumer Consumer;
-  DifferenceEngine Engine(Consumer);
-
-  // If any global names were given, just diff those.
-  if (!GlobalsToCompare.empty()) {
-    for (unsigned I = 0, E = GlobalsToCompare.size(); I != E; ++I)
-      diffGlobal(Engine, *LModule, *RModule, GlobalsToCompare[I]);
-
-  // Otherwise, diff everything in the module.
-  } else {
-    Engine.diff(LModule.get(), RModule.get());
-  }
-
-  return Consumer.hadDifferences();
-}