Add IsStackAllocated helper for variables.

src/data-flow.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 415 matching lines @@
 
 
 void FlowGraphBuilder::VisitAssignment(Assignment* expr) {
   Variable* var = expr->target()->AsVariableProxy()->AsVariable();
   Property* prop = expr->target()->AsProperty();
   // Left-hand side can be a variable or property (or reference error) but
   // not both.
   ASSERT(var == NULL || prop == NULL);
   if (var != NULL) {
     Visit(expr->value());
-    Slot* slot = var->slot();
-    if (slot != NULL &&
-        (slot->type() == Slot::LOCAL || slot->type() == Slot::PARAMETER)) {
-      definitions_.Add(expr);
-    }
+    if (var->IsStackAllocated()) definitions_.Add(expr);
 
   } else if (prop != NULL) {
     Visit(prop->obj());
     if (!prop->key()->IsPropertyName()) Visit(prop->key());
     Visit(expr->value());
   }
   graph_.AppendInstruction(expr);
 }
 
 
@@ skipping 41 matching lines @@
 
 void FlowGraphBuilder::VisitUnaryOperation(UnaryOperation* expr) {
   Visit(expr->expression());
   graph_.AppendInstruction(expr);
 }
 
 
 void FlowGraphBuilder::VisitCountOperation(CountOperation* expr) {
   Visit(expr->expression());
   Variable* var = expr->expression()->AsVariableProxy()->AsVariable();
-  if (var != NULL) {
-    Slot* slot = var->slot();
-    if (slot != NULL &&
-        (slot->type() == Slot::LOCAL || slot->type() == Slot::PARAMETER)) {
-      definitions_.Add(expr);
-    }
+  if (var != NULL && var->IsStackAllocated()) {
+    definitions_.Add(expr);
   }
   graph_.AppendInstruction(expr);
 }
 
 
 void FlowGraphBuilder::VisitBinaryOperation(BinaryOperation* expr) {
   Visit(expr->left());
 
   switch (expr->op()) {
     case Token::COMMA:
@@ skipping 948 matching lines @@
   for (int i = postorder->length() - 1; i >= 0; i--) {
     postorder->at(i)->PrintText();
   }
 }
 
 
 #endif  // defined(DEBUG)
 
 
 } }  // namespace v8::internal