Support %_IsConstructCall in Crankshaft pipeline.

src/runtime.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 6667 matching lines @@
       Factory::NewFunctionFromSharedFunctionInfo(shared,
                                                  context,
                                                  pretenure_flag);
   return *result;
 }
 
 static MaybeObject* Runtime_NewObjectFromBound(Arguments args) {
   HandleScope scope;
   ASSERT(args.length() == 2);
   CONVERT_ARG_CHECKED(JSFunction, function, 0);
-  CONVERT_ARG_CHECKED(JSArray, params, 1);
 
-  RUNTIME_ASSERT(params->HasFastElements());
-  FixedArray* fixed = FixedArray::cast(params->elements());
+  FixedArray* bound_args = NULL;
+  int bound_argc = 0;
+  if (!args[1]->IsNull()) {
+    CONVERT_ARG_CHECKED(JSArray, params, 1);
+    RUNTIME_ASSERT(params->HasFastElements());
+    bound_args = FixedArray::cast(params->elements());
+    bound_argc = Smi::cast(params->length())->value();
+  }
 
-  int fixed_length = Smi::cast(params->length())->value();
-  SmartPointer<Object**> param_data(NewArray<Object**>(fixed_length));
-  for (int i = 0; i < fixed_length; i++) {
-    Handle<Object> val = Handle<Object>(fixed->get(i));
+  JavaScriptFrameIterator it;
+  JavaScriptFrame* frame = it.frame();
+  ASSERT(!frame->is_optimized());
+  it.AdvanceToArgumentsFrame();
+  frame = it.frame();
+  int argc = frame->GetProvidedParametersCount();
+
+  int total_argc = bound_argc + argc;
+  SmartPointer<Object**> param_data(NewArray<Object**>(total_argc));
+  for (int i = 0; i < bound_argc; i++) {
+    Handle<Object> val = Handle<Object>(bound_args->get(i));
     param_data[i] = val.location();
   }
+  for (int i = 0; i < argc; i++) {
+    Handle<Object> val = Handle<Object>(frame->GetParameter(i));
+    param_data[bound_argc + i] = val.location();
+  }
 
   bool exception = false;
   Handle<Object> result = Execution::New(

[Mads Ager (chromium), 2011/02/08 07:09:44]

Move "Execution::New(" to the next line as well? 

-      function, fixed_length, *param_data, &exception);
+      function, total_argc, *param_data, &exception);
   if (exception) {
       return Failure::Exception();
   }
   ASSERT(!result.is_null());
   return *result;
 }
 
 
 static void TrySettingInlineConstructStub(Handle<JSFunction> function) {
   Handle<Object> prototype = Factory::null_value();
@@ skipping 4332 matching lines @@
   } else {
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     Counters::gc_last_resort_from_js.Increment();
     Heap::CollectAllGarbage(false);
   }
 }
 
 
 } }  // namespace v8::internal