[turbofan] Build s/NULL/nullptr/g and CHECK(x != nullptr) to CHECK_NOT_NULL(x).

src/compiler/instruction-selector.h

 // 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.
 
 #ifndef V8_COMPILER_INSTRUCTION_SELECTOR_H_
 #define V8_COMPILER_INSTRUCTION_SELECTOR_H_
 
 #include <map>
 
 #include "src/compiler/common-operator.h"
@@ skipping 50 matching lines @@
 
   void StartBlock(RpoNumber rpo);
   void EndBlock(RpoNumber rpo);
   void AddInstruction(Instruction* instr);
 
   // ===========================================================================
   // ============= Architecture-independent code emission methods. =============
   // ===========================================================================
 
   Instruction* Emit(InstructionCode opcode, InstructionOperand output,
-                    size_t temp_count = 0, InstructionOperand* temps = NULL);
+                    size_t temp_count = 0, InstructionOperand* temps = nullptr);
   Instruction* Emit(InstructionCode opcode, InstructionOperand output,
                     InstructionOperand a, size_t temp_count = 0,
-                    InstructionOperand* temps = NULL);
+                    InstructionOperand* temps = nullptr);
   Instruction* Emit(InstructionCode opcode, InstructionOperand output,
                     InstructionOperand a, InstructionOperand b,
-                    size_t temp_count = 0, InstructionOperand* temps = NULL);
+                    size_t temp_count = 0, InstructionOperand* temps = nullptr);
   Instruction* Emit(InstructionCode opcode, InstructionOperand output,
                     InstructionOperand a, InstructionOperand b,
                     InstructionOperand c, size_t temp_count = 0,
-                    InstructionOperand* temps = NULL);
+                    InstructionOperand* temps = nullptr);
   Instruction* Emit(InstructionCode opcode, InstructionOperand output,
                     InstructionOperand a, InstructionOperand b,
                     InstructionOperand c, InstructionOperand d,
-                    size_t temp_count = 0, InstructionOperand* temps = NULL);
+                    size_t temp_count = 0, InstructionOperand* temps = nullptr);
   Instruction* Emit(InstructionCode opcode, InstructionOperand output,
                     InstructionOperand a, InstructionOperand b,
                     InstructionOperand c, InstructionOperand d,
                     InstructionOperand e, size_t temp_count = 0,
-                    InstructionOperand* temps = NULL);
+                    InstructionOperand* temps = nullptr);
   Instruction* Emit(InstructionCode opcode, InstructionOperand output,
                     InstructionOperand a, InstructionOperand b,
                     InstructionOperand c, InstructionOperand d,
                     InstructionOperand e, InstructionOperand f,
-                    size_t temp_count = 0, InstructionOperand* temps = NULL);
+                    size_t temp_count = 0, InstructionOperand* temps = nullptr);
   Instruction* Emit(InstructionCode opcode, size_t output_count,
                     InstructionOperand* outputs, size_t input_count,
                     InstructionOperand* inputs, size_t temp_count = 0,
-                    InstructionOperand* temps = NULL);
+                    InstructionOperand* temps = nullptr);
   Instruction* Emit(Instruction* instr);
 
   // ===========================================================================
   // ============== Architecture-independent CPU feature methods. ==============
   // ===========================================================================
 
   class Features final {
    public:
     Features() : bits_(0) {}
     explicit Features(unsigned bits) : bits_(bits) {}
@@ skipping 161 matching lines @@
   BoolVector used_;
   IntVector virtual_registers_;
   InstructionScheduler* scheduler_;
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_INSTRUCTION_SELECTOR_H_