Speedup global_proxy.* attributes/accessors (specialize GlobalProxy access).

src/ic/ic.cc

Index: src/ic/ic.cc
diff --git a/src/ic/ic.cc b/src/ic/ic.cc
index da38d581f0d8183b5dad6385b9d8942b5c4bd16c..8be212237b418313dfd6a13832b9bc201e94ee4b 100644
--- a/src/ic/ic.cc
+++ b/src/ic/ic.cc
@@ -1241,6 +1241,16 @@ Handle<Code> LoadIC::CompileHandler(LookupIterator* lookup,
         DCHECK(!GetSharedFunctionInfo()->HasDebugInfo());
         Handle<Object> getter(Handle<AccessorPair>::cast(accessors)->getter(),
                               isolate());
+
+        MaybeHandle<Name> maybe_name =
+            FunctionTemplateInfo::TryGetCachePropertyName(isolate(), getter);
+        if (!maybe_name.is_null()) {
+          Handle<Name> name = maybe_name.ToHandleChecked();
+          LookupIterator cache_it(lookup->GetReceiver(), name, holder);
+          CHECK_EQ(LookupIterator::DATA, cache_it.state());
+          return CompileHandler(&cache_it, unused, cache_holder);
+        }
+
         CallOptimization call_optimization(getter);
         NamedLoadHandlerCompiler compiler(isolate(), map, holder, cache_holder);
         if (call_optimization.is_simple_api_call()) {
@@ -1288,7 +1298,6 @@ Handle<Code> LoadIC::CompileHandler(LookupIterator* lookup,
       // -------------- Fields --------------
       if (lookup->property_details().type() == DATA) {
         FieldIndex field = lookup->GetFieldIndex();
-        DCHECK(!receiver_is_holder);
         TRACE_HANDLER_STATS(isolate(), LoadIC_LoadField);
         NamedLoadHandlerCompiler compiler(isolate(), map, holder, cache_holder);
         return compiler.CompileLoadField(lookup->name(), field);