Optimize AOT's switchable calls for the monomorphic case.

runtime/vm/disassembler.cc

 // Copyright (c) 2011, 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.
 
 #include "vm/disassembler.h"
 
 #include "vm/assembler.h"
 #include "vm/deopt_instructions.h"
 #include "vm/globals.h"
 #include "vm/il_printer.h"
@@ skipping 158 matching lines @@
             optimized ? "optimized " : "",
             function_fullname);
   code.Disassemble();
   THR_Print("}\n");
 
 #if defined(TARGET_ARCH_IA32)
   THR_Print("Pointer offsets for function: {\n");
   // Pointer offsets are stored in descending order.
   Object& obj = Object::Handle();
   for (intptr_t i = code.pointer_offsets_length() - 1; i >= 0; i--) {
-    const uword addr = code.GetPointerOffsetAt(i) + code.EntryPoint();
+    const uword addr = code.GetPointerOffsetAt(i) + code.PayloadStart();
     obj = *reinterpret_cast<RawObject**>(addr);
     THR_Print(" %d : %#" Px " '%s'\n",
               code.GetPointerOffsetAt(i), addr, obj.ToCString());
   }
   THR_Print("}\n");
 #else
   ASSERT(code.pointer_offsets_length() == 0);
 #endif
 
   const ObjectPool& object_pool = ObjectPool::Handle(code.GetObjectPool());
   object_pool.DebugPrint();
 
   THR_Print("PC Descriptors for function '%s' {\n", function_fullname);
   PcDescriptors::PrintHeaderString();
   const PcDescriptors& descriptors =
       PcDescriptors::Handle(code.pc_descriptors());
   THR_Print("%s}\n", descriptors.ToCString());
 
-  uword start = Instructions::Handle(code.instructions()).EntryPoint();
+  uword start = Instructions::Handle(code.instructions()).PayloadStart();
   const Array& deopt_table = Array::Handle(code.deopt_info_array());
   intptr_t deopt_table_length = DeoptTable::GetLength(deopt_table);
   if (deopt_table_length > 0) {
     THR_Print("DeoptInfo: {\n");
     Smi& offset = Smi::Handle();
     TypedData& info = TypedData::Handle();
     Smi& reason_and_flags = Smi::Handle();
     for (intptr_t i = 0; i < deopt_table_length; ++i) {
       DeoptTable::GetEntry(deopt_table, i, &offset, &info, &reason_and_flags);
       const intptr_t reason =
@@ skipping 111 matching lines @@
     const Function& function, bool optimized) {
   const char* function_fullname = function.ToFullyQualifiedCString();
   const Code& code = Code::Handle(function.unoptimized_code());
   DisassembleCodeHelper(function_fullname, code, optimized);
 }
 
 
 #endif  // !PRODUCT
 
 }  // namespace dart