[interpreter] Unify meaning of register count operands.

src/compiler/interpreter-assembler.cc

 // Copyright 2015 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/interpreter-assembler.h"
 
 #include <ostream>
 
 #include "src/code-factory.h"
 #include "src/compiler/graph.h"
@@ skipping 353 matching lines @@
 
 Node* InterpreterAssembler::IntPtrAdd(Node* a, Node* b) {
   return raw_assembler_->IntPtrAdd(a, b);
 }
 
 
 Node* InterpreterAssembler::IntPtrSub(Node* a, Node* b) {
   return raw_assembler_->IntPtrSub(a, b);
 }
 
+Node* InterpreterAssembler::Int32Sub(Node* a, Node* b) {
+  return raw_assembler_->Int32Sub(a, b);
+}
 
 Node* InterpreterAssembler::WordShl(Node* value, int shift) {
   return raw_assembler_->WordShl(value, Int32Constant(shift));
 }
 
 
 Node* InterpreterAssembler::LoadConstantPoolEntry(Node* index) {
   Node* constant_pool = LoadObjectField(BytecodeArrayTaggedPointer(),
                                         BytecodeArray::kConstantPoolOffset);
   Node* entry_offset =
@@ skipping 364 matching lines @@
   return raw_assembler_->call_descriptor();
 }
 
 
 Zone* InterpreterAssembler::zone() { return raw_assembler_->zone(); }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8