Optimize AOT's switchable calls for the monomorphic case.

runtime/vm/thread.h

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_THREAD_H_
 #define VM_THREAD_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/atomic.h"
@@ skipping 69 matching lines @@
   V(RawCode*, update_store_buffer_code_,                                       \
     StubCode::UpdateStoreBuffer_entry()->code(), NULL)                         \
   V(RawCode*, fix_callers_target_code_,                                        \
     StubCode::FixCallersTarget_entry()->code(), NULL)                          \
   V(RawCode*, fix_allocation_stub_code_,                                       \
     StubCode::FixAllocationStubTarget_entry()->code(), NULL)                   \
   V(RawCode*, invoke_dart_code_stub_,                                          \
     StubCode::InvokeDartCode_entry()->code(), NULL)                            \
   V(RawCode*, call_to_runtime_stub_,                                           \
     StubCode::CallToRuntime_entry()->code(), NULL)                             \
+  V(RawCode*, monomorphic_miss_stub_,                                          \
+    StubCode::MonomorphicMiss_entry()->code(), NULL)                           \
 
 #endif
 
 // List of VM-global objects/addresses cached in each Thread object.
 #define CACHED_VM_OBJECTS_LIST(V)                                              \
   V(RawObject*, object_null_, Object::null(), NULL)                            \
   V(RawBool*, bool_true_, Object::bool_true().raw(), NULL)                     \
   V(RawBool*, bool_false_, Object::bool_false().raw(), NULL)                   \
   CACHED_VM_STUBS_LIST(V)                                                      \
 
 #if defined(TARGET_ARCH_DBC)
 #define CACHED_VM_STUBS_ADDRESSES_LIST(V)
 #else
 #define CACHED_VM_STUBS_ADDRESSES_LIST(V)                                      \
   V(uword, update_store_buffer_entry_point_,                                   \
     StubCode::UpdateStoreBuffer_entry()->EntryPoint(), 0)                      \
   V(uword, call_to_runtime_entry_point_,                                       \
     StubCode::CallToRuntime_entry()->EntryPoint(), 0)                          \
-  V(uword, megamorphic_lookup_entry_point_,                                    \
-    StubCode::MegamorphicLookup_entry()->EntryPoint(), 0)                      \
+  V(uword, megamorphic_lookup_checked_entry_,                                  \
+    StubCode::MegamorphicLookup_entry()->CheckedEntryPoint(), 0)               \
 
 #endif
 
 #define CACHED_ADDRESSES_LIST(V)                                               \
   CACHED_VM_STUBS_ADDRESSES_LIST(V)                                            \
   V(uword, native_call_wrapper_entry_point_,                                   \
     NativeEntry::NativeCallWrapperEntry(), 0)                                  \
   V(RawString**, predefined_symbols_address_,                                  \
     Symbols::PredefinedAddress(), NULL)                                        \
   V(uword, double_negate_address_,                                             \
@@ skipping 648 matching lines @@
 // Disable thread interrupts.
 class DisableThreadInterruptsScope : public StackResource {
  public:
   explicit DisableThreadInterruptsScope(Thread* thread);
   ~DisableThreadInterruptsScope();
 };
 
 }  // namespace dart
 
 #endif  // VM_THREAD_H_