Merge V8 5.2.361.47 DO NOT MERGE
https://chromium.googlesource.com/v8/v8/+/5.2.361.47
FPIIM-449
Change-Id: Ibec421b85a9b88cb3a432ada642e469fe7e78346
(cherry picked from commit bcf72ee8e3b26f1d0726869c7ddb3921c68b09a8)
diff --git a/src/compiler/js-native-context-specialization.h b/src/compiler/js-native-context-specialization.h
index 5562c6e..7d43bfb 100644
--- a/src/compiler/js-native-context-specialization.h
+++ b/src/compiler/js-native-context-specialization.h
@@ -85,6 +85,20 @@
Handle<Context> native_context,
Handle<JSObject> holder);
+ // Extract receiver maps from {nexus} and filter based on {receiver} if
+ // possible.
+ bool ExtractReceiverMaps(Node* receiver, Node* effect,
+ FeedbackNexus const& nexus,
+ MapHandleList* receiver_maps);
+
+ // Try to infer a map for the given {receiver} at the current {effect}.
+ // If a map is returned then you can be sure that the {receiver} definitely
+ // has the returned map at this point in the program (identified by {effect}).
+ MaybeHandle<Map> InferReceiverMap(Node* receiver, Node* effect);
+ // Try to infer a root map for the {receiver} independent of the current
+ // program location.
+ MaybeHandle<Map> InferReceiverRootMap(Node* receiver);
+
// Retrieve the native context from the given {node} if known.
MaybeHandle<Context> GetNativeContext(Node* node);