Support %_IsConstructCall in Crankshaft pipeline.

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index 4994378cd3a770e55a199a4582a2eeb35e81b470..97a5fc3cd7574e77c4493cdae5c43e0226418980 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -6685,21 +6685,37 @@ 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();
+  }
+
+  JavaScriptFrameIterator it;
+  JavaScriptFrame* frame = it.frame();
+  ASSERT(!frame->is_optimized());
+  it.AdvanceToArgumentsFrame();
+  frame = it.frame();
+  int argc = frame->GetProvidedParametersCount();
 
-  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));
+  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();
   }