Continue learning for calls in optimized code when we have no type feedback.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index cd93679bd085a42a99dc568a4b081d26163f6851..e2c1f77d5f75b9bcc443b82cb339f411e2fb1c02 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -4109,8 +4109,29 @@ void LCodeGen::DoCallFunction(LCallFunction* instr) {
   DCHECK(ToRegister(instr->result()).is(r0));
 
   int arity = instr->arity();
-  CallFunctionStub stub(isolate(), arity, instr->hydrogen()->function_flags());
-  CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
+  CallFunctionFlags flags = instr->hydrogen()->function_flags();
+  if (instr->hydrogen()->HasVectorAndSlot()) {
+    Register slot_register = ToRegister(instr->temp_slot());
+    Register vector_register = ToRegister(instr->temp_vector());
+    DCHECK(slot_register.is(r3));
+    DCHECK(vector_register.is(r2));
+
+    Handle<TypeFeedbackVector> vector = instr->hydrogen()->feedback_vector();
+    int index = vector->GetIndex(instr->hydrogen()->slot());
+
+    __ Move(vector_register, vector);
+    __ mov(slot_register, Operand(Smi::FromInt(index)));
+
+    CallICState::CallType call_type =
+        (flags & CALL_AS_METHOD) ? CallICState::METHOD : CallICState::FUNCTION;
+
+    Handle<Code> ic =
+        CodeFactory::CallICInOptimizedCode(isolate(), arity, call_type).code();
+    CallCode(ic, RelocInfo::CODE_TARGET, instr);
+  } else {
+    CallFunctionStub stub(isolate(), arity, flags);
+    CallCode(stub.GetCode(), RelocInfo::CODE_TARGET, instr);
+  }
 }