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

src/compiler/arm64/code-generator-arm64.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/code-generator.h"
 
 #include "src/arm64/frames-arm64.h"
 #include "src/arm64/macro-assembler-arm64.h"
 #include "src/ast/scopes.h"
 #include "src/compiler/code-generator-impl.h"
@@ skipping 187 matching lines @@
         return Operand(constant.ToHeapObject());
       case Constant::kRpoNumber:
         UNREACHABLE();  // TODO(dcarney): RPO immediates on arm64.
         break;
     }
     UNREACHABLE();
     return Operand(-1);
   }
 
   MemOperand ToMemOperand(InstructionOperand* op, MacroAssembler* masm) const {
-    DCHECK(op != NULL);
+    DCHECK_NOT_NULL(op);
     DCHECK(op->IsStackSlot() || op->IsDoubleStackSlot());
     FrameOffset offset = frame_access_state()->GetFrameOffset(
         AllocatedOperand::cast(op)->index());
     if (offset.from_frame_pointer()) {
       int from_sp =
           offset.offset() +
           ((frame()->GetSpToFpSlotCount() + frame_access_state()->sp_delta()) *
            kPointerSize);
       // Convert FP-offsets to SP-offsets if it results in better code.
       if (Assembler::IsImmLSUnscaled(from_sp) ||
@@ skipping 1235 matching lines @@
   } else if (descriptor->UseNativeStack()) {
     pop_count += (pop_count & 1);
   }
   __ Drop(pop_count);
   __ Ret();
 }
 
 
 void CodeGenerator::AssembleMove(InstructionOperand* source,
                                  InstructionOperand* destination) {
-  Arm64OperandConverter g(this, NULL);
+  Arm64OperandConverter g(this, nullptr);
   // Dispatch on the source and destination operand kinds.  Not all
   // combinations are possible.
   if (source->IsRegister()) {
     DCHECK(destination->IsRegister() || destination->IsStackSlot());
     Register src = g.ToRegister(source);
     if (destination->IsRegister()) {
       __ Mov(g.ToRegister(destination), src);
     } else {
       __ Str(src, g.ToMemOperand(destination, masm()));
     }
@@ skipping 76 matching lines @@
       __ Str(temp, g.ToMemOperand(destination, masm()));
     }
   } else {
     UNREACHABLE();
   }
 }
 
 
 void CodeGenerator::AssembleSwap(InstructionOperand* source,
                                  InstructionOperand* destination) {
-  Arm64OperandConverter g(this, NULL);
+  Arm64OperandConverter g(this, nullptr);
   // Dispatch on the source and destination operand kinds.  Not all
   // combinations are possible.
   if (source->IsRegister()) {
     // Register-register.
     UseScratchRegisterScope scope(masm());
     Register temp = scope.AcquireX();
     Register src = g.ToRegister(source);
     if (destination->IsRegister()) {
       Register dst = g.ToRegister(destination);
       __ Mov(temp, src);
@@ skipping 69 matching lines @@
       padding_size -= kInstructionSize;
     }
   }
 }
 
 #undef __
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8