Optimize AOT's switchable calls for the monomorphic case.

runtime/vm/stub_code.h

Index: runtime/vm/stub_code.h
diff --git a/runtime/vm/stub_code.h b/runtime/vm/stub_code.h
index d5103e61d639616091e4dcbb17b48db803687908..bb971e284a16cbdbff1c86b0e8afd7d70db0877b 100644
--- a/runtime/vm/stub_code.h
+++ b/runtime/vm/stub_code.h
@@ -40,6 +40,7 @@ class Deserializer;
   V(ICLookupThroughFunction)                                                   \
   V(ICLookupThroughCode)                                                       \
   V(MegamorphicLookup)                                                         \
+  V(MonomorphicMiss)                                                           \
   V(FixAllocationStubTarget)                                                   \
   V(Deoptimize)                                                                \
   V(DeoptimizeLazy)                                                            \
@@ -90,6 +91,7 @@ class StubEntry {
 
   const ExternalLabel& label() const { return label_; }
   uword EntryPoint() const { return entry_point_; }
+  uword CheckedEntryPoint() const { return checked_entry_point_; }
   RawCode* code() const { return code_; }
   intptr_t Size() const { return size_; }
 
@@ -99,6 +101,7 @@ class StubEntry {
  private:
   RawCode* code_;
   uword entry_point_;
+  uword checked_entry_point_;
   intptr_t size_;
   ExternalLabel label_;