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

src/compiler/pipeline.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/pipeline.h"
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
 
 #include "src/base/platform/elapsed-timer.h"
@@ skipping 127 matching lines @@
     return source_positions_.get();
   }
   MachineOperatorBuilder* machine() const { return machine_; }
   CommonOperatorBuilder* common() const { return common_; }
   JSOperatorBuilder* javascript() const { return javascript_; }
   JSGraph* jsgraph() const { return jsgraph_; }
   Typer* typer() const { return typer_.get(); }
 
   LoopAssignmentAnalysis* loop_assignment() const { return loop_assignment_; }
   void set_loop_assignment(LoopAssignmentAnalysis* loop_assignment) {
-    DCHECK(!loop_assignment_);
+    DCHECK_EQ(nullptr, loop_assignment_);
     loop_assignment_ = loop_assignment;
   }
 
   Node* context_node() const { return context_node_; }
   void set_context_node(Node* context_node) {
-    DCHECK(!context_node_);
+    DCHECK_EQ(nullptr, context_node_);
     context_node_ = context_node;
   }
 
   Schedule* schedule() const { return schedule_; }
   void set_schedule(Schedule* schedule) {
-    DCHECK(!schedule_);
+    DCHECK_EQ(nullptr, schedule_);
     schedule_ = schedule;
   }
 
   Zone* instruction_zone() const { return instruction_zone_; }
   InstructionSequence* sequence() const { return sequence_; }
   Frame* frame() const { return frame_; }
   RegisterAllocator* register_allocator() const { return register_allocator_; }
 
   void DeleteGraphZone() {
     // Destroy objects with destructors first.
@@ skipping 16 matching lines @@
   void DeleteInstructionZone() {
     if (instruction_zone_ == nullptr) return;
     instruction_zone_scope_.Destroy();
     instruction_zone_ = nullptr;
     sequence_ = nullptr;
     frame_ = nullptr;
     register_allocator_ = nullptr;
   }
 
   void InitializeInstructionSequence() {
-    DCHECK(!sequence_);
+    DCHECK_EQ(nullptr, sequence_);
     InstructionBlocks* instruction_blocks =
         InstructionSequence::InstructionBlocksFor(instruction_zone(),
                                                   schedule());
     sequence_ = new (instruction_zone()) InstructionSequence(
         info()->isolate(), instruction_zone(), instruction_blocks);
   }
 
   void InitializeRegisterAllocator(Zone* local_zone,
                                    const RegisterConfiguration* config,
                                    const char* debug_name) {
-    DCHECK(!register_allocator_);
-    DCHECK(!frame_);
+    DCHECK_EQ(nullptr, register_allocator_);
+    DCHECK_EQ(nullptr, frame_);
     frame_ = new (instruction_zone()) Frame();
     register_allocator_ = new (instruction_zone())
         RegisterAllocator(config, local_zone, frame(), sequence(), debug_name);
   }
 
  private:
   Isolate* isolate_;
   CompilationInfo* info_;
   Zone* outer_zone_;
   ZonePool* const zone_pool_;
@@ skipping 949 matching lines @@
 }
 
 
 void Pipeline::TearDown() {
   InstructionOperand::TearDownCaches();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8