[interpreter] Clarify some names and comments.

src/interpreter/bytecode-generator.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/interpreter/bytecode-generator.h"
 
 #include "src/ast/scopes.h"
 #include "src/code-stubs.h"
 #include "src/compilation-info.h"
 #include "src/compiler.h"
@@ skipping 1296 matching lines @@
 
   LoopBuilder loop_builder(builder());
   BytecodeLabel subject_null_label, subject_undefined_label;
 
   // Prepare the state for executing ForIn.
   builder()->SetExpressionAsStatementPosition(stmt->subject());
   VisitForAccumulatorValue(stmt->subject());
   builder()->JumpIfUndefined(&subject_undefined_label);
   builder()->JumpIfNull(&subject_null_label);
   Register receiver = register_allocator()->NewRegister();
-  builder()->CastAccumulatorToJSObject(receiver);
+  builder()->ConvertAccumulatorToObject(receiver);
 
   register_allocator()->PrepareForConsecutiveAllocations(3);
   Register cache_type = register_allocator()->NextConsecutiveRegister();
   Register cache_array = register_allocator()->NextConsecutiveRegister();
   Register cache_length = register_allocator()->NextConsecutiveRegister();
   // Used as kRegTriple and kRegPair in ForInPrepare and ForInNext.
   USE(cache_array);
   builder()->ForInPrepare(receiver, cache_type);
 
   // Set up loop counter
@@ skipping 220 matching lines @@
     ObjectLiteral::Property* property = expr->properties()->at(i);
 
     // Set-up receiver.
     Register new_receiver = property->is_static() ? literal : prototype;
     if (new_receiver != old_receiver) {
       builder()->MoveRegister(new_receiver, receiver);
       old_receiver = new_receiver;
     }
 
     VisitForAccumulatorValue(property->key());
-    builder()->CastAccumulatorToName(key);
+    builder()->ConvertAccumulatorToName(key);
     // The static prototype property is read only. We handle the non computed
     // property name case in the parser. Since this is the only case where we
     // need to check for an own read only property we special case this so we do
     // not need to do this for every property.
     if (property->is_static() && property->is_computed_name()) {
       VisitClassLiteralStaticPrototypeWithComputedName(key);
     }
     VisitForAccumulatorValue(property->value());
     builder()->StoreAccumulatorInRegister(value);
 
@@ skipping 269 matching lines @@
     Register literal_argument = register_allocator()->NextConsecutiveRegister();
     Register key = register_allocator()->NextConsecutiveRegister();
     Register value = register_allocator()->NextConsecutiveRegister();
     Register attr = register_allocator()->NextConsecutiveRegister();
     DCHECK(Register::AreContiguous(literal_argument, key, value, attr));
     Register set_function_name =
         register_allocator()->NextConsecutiveRegister();
 
     builder()->MoveRegister(literal, literal_argument);
     VisitForAccumulatorValue(property->key());
-    builder()->CastAccumulatorToName(key);
+    builder()->ConvertAccumulatorToName(key);
     VisitForAccumulatorValue(property->value());
     builder()->StoreAccumulatorInRegister(value);
     VisitSetHomeObject(value, literal, property);
     builder()->LoadLiteral(Smi::FromInt(NONE)).StoreAccumulatorInRegister(attr);
     switch (property->kind()) {
       case ObjectLiteral::Property::CONSTANT:
       case ObjectLiteral::Property::COMPUTED:
       case ObjectLiteral::Property::MATERIALIZED_LITERAL:
         builder()
             ->LoadLiteral(Smi::FromInt(property->NeedsSetFunctionName()))
@@ skipping 1089 matching lines @@
       BuildKeyedSuperPropertyLoad(object, home_object, key);
       break;
     }
   }
 
   // Save result for postfix expressions.
   if (is_postfix) {
     old_value = register_allocator()->outer()->NewRegister();
 
     // Convert old value into a number before saving it.
-    builder()->CastAccumulatorToNumber(old_value);
+    builder()->ConvertAccumulatorToNumber(old_value);
   }
 
   // Perform +1/-1 operation.
   FeedbackVectorSlot slot = expr->CountBinaryOpFeedbackSlot();
   builder()->CountOperation(expr->binary_op(), feedback_index(slot));
 
   // Store the value.
   builder()->SetExpressionPosition(expr);
   FeedbackVectorSlot feedback_slot = expr->CountSlot();
   switch (assign_type) {
@@ skipping 228 matching lines @@
   VisitFunctionClosureForContext();
   builder()->CreateBlockContext(scope->scope_info());
   execution_result()->SetResultInAccumulator();
 }
 
 void BytecodeGenerator::VisitNewLocalWithContext() {
   AccumulatorResultScope accumulator_execution_result(this);
 
   Register extension_object = register_allocator()->NewRegister();
 
-  builder()->CastAccumulatorToJSObject(extension_object);
+  builder()->ConvertAccumulatorToObject(extension_object);
   VisitFunctionClosureForContext();
   builder()->CreateWithContext(extension_object);
   execution_result()->SetResultInAccumulator();
 }
 
 void BytecodeGenerator::VisitNewLocalCatchContext(Variable* variable) {
   AccumulatorResultScope accumulator_execution_result(this);
   DCHECK(variable->IsContextSlot());
 
   Register exception = register_allocator()->NewRegister();
@@ skipping 174 matching lines @@
   return execution_context()->scope()->language_mode();
 }
 
 int BytecodeGenerator::feedback_index(FeedbackVectorSlot slot) const {
   return TypeFeedbackVector::GetIndex(slot);
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8