Track loop nesting across function calls when the function...

src/compiler.cc

 // Copyright 2006-2008 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 221 matching lines @@
     script->set_line_offset(Smi::FromInt(line_offset));
     result = MakeFunction(is_global, true, script, NULL, NULL);
     if (!result.is_null()) {
       CompilationCache::PutFunction(source, entry, result);
     }
   }
   return result;
 }
 
 
-bool Compiler::CompileLazy(Handle<SharedFunctionInfo> shared) {
+bool Compiler::CompileLazy(Handle<SharedFunctionInfo> shared,
+                           int loop_nesting) {
   ZoneScope zone_scope(DELETE_ON_EXIT);
 
   // The VM is in the COMPILER state until exiting this function.
   VMState state(COMPILER);
 
   // Make sure we have an initial stack limit.
   StackGuard guard;
   PostponeInterruptsScope postpone;
 
   // Compute name, source code and script data.
@@ skipping 11 matching lines @@
                                      start_position,
                                      end_position,
                                      is_expression);
 
   // Check for parse errors.
   if (lit == NULL) {
     ASSERT(Top::has_pending_exception());
     return false;
   }
 
+  // Update the loop nesting in the function literal.
+  lit->set_loop_nesting(loop_nesting);
+
   // Measure how long it takes to do the lazy compilation; only take
   // the rest of the function into account to avoid overlap with the
   // lazy parsing statistics.
   StatsRateScope timer(&Counters::compile_lazy);
 
   // Compile the code.
   Handle<Code> code = MakeCode(lit, script, false);
 
   // Check for stack-overflow exception.
   if (code.is_null()) {
@@ skipping 10 matching lines @@
   // Set the expected number of properties for instances.
   SetExpectedNofPropertiesFromEstimate(shared, lit->expected_property_count());
 
   // Check the function has compiled code.
   ASSERT(shared->is_compiled());
   return true;
 }
 
 
 } }  // namespace v8::internal