Create AllocationSite objects, pointed to by AllocationSiteInfo.

src/code-stubs-hydrogen.cc

 // Copyright 2012 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 297 matching lines @@
 
 template <>
 HValue* CodeStubGraphBuilder<FastCloneShallowArrayStub>::BuildCodeStub() {
   Zone* zone = this->zone();
   Factory* factory = isolate()->factory();
   HValue* undefined = graph()->GetConstantUndefined();
   AllocationSiteMode alloc_site_mode = casted_stub()->allocation_site_mode();
   FastCloneShallowArrayStub::Mode mode = casted_stub()->mode();
   int length = casted_stub()->length();
 
-  HInstruction* boilerplate =
-      AddInstruction(new(zone) HLoadKeyed(GetParameter(0),
+  HValue* literals = GetParameter(0);
+  HInstruction* allocation_site =
+      AddInstruction(new(zone) HLoadKeyed(literals,

[Hannes Payer (out of office), 2013/06/25 16:35:07]

literals is just used there, you could just use the original code.

[mvstanton, 2013/07/02 13:55:11]

Done.

                                           GetParameter(1),
                                           NULL,
                                           FAST_ELEMENTS));
-
   IfBuilder checker(this);
-  checker.IfNot<HCompareObjectEqAndBranch, HValue*>(boilerplate, undefined);
+  checker.IfNot<HCompareObjectEqAndBranch, HValue*>(allocation_site, undefined);
   checker.Then();
 
+  HObjectAccess access = HObjectAccess::ForAllocationSiteInfoPayload();
+  HInstruction* boilerplate = AddLoad(allocation_site, access);
   if (mode == FastCloneShallowArrayStub::CLONE_ANY_ELEMENTS) {
     HValue* elements = AddLoadElements(boilerplate);
 
     IfBuilder if_fixed_cow(this);
     if_fixed_cow.IfCompareMap(elements, factory->fixed_cow_array_map());
     if_fixed_cow.Then();
     environment()->Push(BuildCloneShallowArray(context(),
                                                boilerplate,
+                                               allocation_site,
                                                alloc_site_mode,
                                                FAST_ELEMENTS,
                                                0/*copy-on-write*/));
     if_fixed_cow.Else();
 
     IfBuilder if_fixed(this);
     if_fixed.IfCompareMap(elements, factory->fixed_array_map());
     if_fixed.Then();
     environment()->Push(BuildCloneShallowArray(context(),
                                                boilerplate,
+                                               allocation_site,
                                                alloc_site_mode,
                                                FAST_ELEMENTS,
                                                length));
     if_fixed.Else();
     environment()->Push(BuildCloneShallowArray(context(),
                                                boilerplate,
+                                               allocation_site,
                                                alloc_site_mode,
                                                FAST_DOUBLE_ELEMENTS,
                                                length));
   } else {
     ElementsKind elements_kind = casted_stub()->ComputeElementsKind();
     environment()->Push(BuildCloneShallowArray(context(),
                                                boilerplate,
+                                               allocation_site,
                                                alloc_site_mode,
                                                elements_kind,
                                                length));
   }
 
   HValue* result = environment()->Pop();
   checker.ElseDeopt();
   return result;
 }
 
@@ skipping 401 matching lines @@
   return graph()->GetConstant0();
 }
 
 
 Handle<Code> ToBooleanStub::GenerateCode() {
   return DoGenerateCode(this);
 }
 
 
 } }  // namespace v8::internal