Cache IC handlers on the prototype's map if possible

src/arm64/ic-arm64.cc

Index: src/arm64/ic-arm64.cc
diff --git a/src/arm64/ic-arm64.cc b/src/arm64/ic-arm64.cc
index bde701ca6a69212fe006eae2a7908240f42f8469..5be6438f75e6795ba31a223995a172adfd1f1813 100644
--- a/src/arm64/ic-arm64.cc
+++ b/src/arm64/ic-arm64.cc
@@ -369,7 +369,8 @@ void LoadIC::GenerateMegamorphic(MacroAssembler* masm) {
   ASSERT(name.is(x2));
 
   // Probe the stub cache.
-  Code::Flags flags = Code::ComputeHandlerFlags(Code::LOAD_IC);
+  Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
+      Code::ComputeHandlerFlags(Code::LOAD_IC));
   masm->isolate()->stub_cache()->GenerateProbe(
       masm, flags, receiver, name, x3, x4, x5, x6);
 
@@ -1122,7 +1123,8 @@ void StoreIC::GenerateMegamorphic(MacroAssembler* masm) {
   ASSERT(!AreAliased(receiver, name, ValueRegister(), x3, x4, x5, x6));
 
   // Probe the stub cache.
-  Code::Flags flags = Code::ComputeHandlerFlags(Code::STORE_IC);
+  Code::Flags flags = Code::RemoveTypeAndHolderFromFlags(
+      Code::ComputeHandlerFlags(Code::STORE_IC));
   masm->isolate()->stub_cache()->GenerateProbe(
       masm, flags, receiver, name, x3, x4, x5, x6);