Support for post-fix count operations (x++, x--) where x is a global...

src/compiler.cc

 // Copyright 2009 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 826 matching lines @@
     case Token::VOID:
       ProcessExpression(expr->expression(), Expression::kEffect);
       break;
     default:
       BAILOUT("UnaryOperation");
   }
 }
 
 
 void CodeGenSelector::VisitCountOperation(CountOperation* expr) {
-  BAILOUT("CountOperation");
+  // We support postfix count operations on global variables.
+  if (expr->is_prefix()) BAILOUT("Prefix CountOperation");
+  Variable* var = expr->expression()->AsVariableProxy()->AsVariable();
+  if (var == NULL || !var->is_global()) BAILOUT("non-global postincrement");
+  ProcessExpression(expr->expression(), Expression::kValue);
 }
 
 
 void CodeGenSelector::VisitBinaryOperation(BinaryOperation* expr) {
   switch (expr->op()) {
     case Token::COMMA:
       ProcessExpression(expr->left(), Expression::kEffect);
       CHECK_BAILOUT;
       ProcessExpression(expr->right(), context_);
       break;
@@ skipping 71 matching lines @@
 
 void CodeGenSelector::VisitThisFunction(ThisFunction* expr) {
   BAILOUT("ThisFunction");
 }
 
 #undef BAILOUT
 #undef CHECK_BAILOUT
 
 
 } }  // namespace v8::internal