Revert "Make GCC happy again." and "Initial switch to Chromium-style CHECK_* and DCHECK_* macros.".

src/compiler/move-optimizer.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/compiler/move-optimizer.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 65 matching lines @@
 
 
 static MoveOperands* PrepareInsertAfter(ParallelMove* left, MoveOperands* move,
                                         Zone* zone) {
   auto move_ops = left->move_operands();
   MoveOperands* replacement = nullptr;
   MoveOperands* to_eliminate = nullptr;
   for (auto curr = move_ops->begin(); curr != move_ops->end(); ++curr) {
     if (curr->IsEliminated()) continue;
     if (curr->destination()->Equals(move->source())) {
-      DCHECK(!replacement);
+      DCHECK_EQ(nullptr, replacement);
       replacement = curr;
       if (to_eliminate != nullptr) break;
     } else if (curr->destination()->Equals(move->destination())) {
-      DCHECK(!to_eliminate);
+      DCHECK_EQ(nullptr, to_eliminate);
       to_eliminate = curr;
       if (replacement != nullptr) break;
     }
   }
   DCHECK(!(replacement == to_eliminate && replacement != nullptr));
   if (replacement != nullptr) {
     auto new_source = new (zone) InstructionOperand(
         replacement->source()->kind(), replacement->source()->index());
     move->set_source(new_source);
   }
@@ skipping 95 matching lines @@
     std::swap(*new_move, *it);
     ++it;
   }
   DCHECK_EQ(it, slot_1->move_operands()->end());
   new_moves->clear();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8