[Interpreter] Consistency fixes.

src/objects-inl.h

 // Copyright 2012 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.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 3596 matching lines @@
 }
 
 
 void BytecodeArray::set(int index, byte value) {
   DCHECK(index >= 0 && index < this->length());
   WRITE_BYTE_FIELD(this, kHeaderSize + index * kCharSize, value);
 }
 
 
 void BytecodeArray::set_frame_size(int frame_size) {
-  // We need at least one stack slot for the return register.
-  DCHECK_GE(frame_size, kPointerSize);
+  DCHECK_GE(frame_size, 0);
   DCHECK(IsAligned(frame_size, static_cast<unsigned>(kPointerSize)));
   WRITE_INT_FIELD(this, kFrameSizeOffset, frame_size);
 }
 
 
 int BytecodeArray::frame_size() const {
   return READ_INT_FIELD(this, kFrameSizeOffset);
 }
 
 
@@ skipping 3464 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_