Minor cleanups & trivial refactoring related to Ast.

src/arm64/full-codegen-arm64.cc

 // Copyright 2013 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 "v8.h"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "code-stubs.h"
 #include "codegen.h"
@@ skipping 2226 matching lines @@
   }
   // Non-initializing assignments to consts are ignored.
 }
 
 
 void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) {
   ASM_LOCATION("FullCodeGenerator::EmitNamedPropertyAssignment");
   // Assignment to a property, using a named store IC.
   Property* prop = expr->target()->AsProperty();
   ASSERT(prop != NULL);
-  ASSERT(prop->key()->AsLiteral() != NULL);
+  ASSERT(prop->key()->IsLiteral());
 
   // Record source code position before IC call.
   SetSourcePosition(expr->position());
   __ Mov(x2, Operand(prop->key()->AsLiteral()->value()));
   __ Pop(x1);
 
   CallStoreIC(expr->AssignmentFeedbackId());
 
   PrepareForBailoutForId(expr->AssignmentId(), TOS_REG);
   context()->Plug(x0);
@@ skipping 2638 matching lines @@
   return previous_;
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64