Optimize AOT's switchable calls for the monomorphic case.

runtime/vm/flow_graph_compiler.cc

 // Copyright (c) 2013, 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/globals.h"  // Needed here to get TARGET_ARCH_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/bit_vector.h"
 #include "vm/cha.h"
@@ skipping 988 matching lines @@
   deopt_infos_.Add(info);
   assembler()->Deopt(0, /*is_eager =*/ 1);
   info->set_pc_offset(assembler()->CodeSize());
 }
 #endif  // defined(TARGET_ARCH_DBC)
 
 
 void FlowGraphCompiler::FinalizeExceptionHandlers(const Code& code) {
   ASSERT(exception_handlers_list_ != NULL);
   const ExceptionHandlers& handlers = ExceptionHandlers::Handle(
-      exception_handlers_list_->FinalizeExceptionHandlers(code.EntryPoint()));
+      exception_handlers_list_->FinalizeExceptionHandlers(code.PayloadStart()));
   code.set_exception_handlers(handlers);
   if (FLAG_compiler_stats) {
     Thread* thread = Thread::Current();
     INC_STAT(thread, total_code_size,
         ExceptionHandlers::InstanceSize(handlers.num_entries()));
     INC_STAT(thread, total_code_size, handlers.num_entries() * sizeof(uword));
   }
 }
 
 
 void FlowGraphCompiler::FinalizePcDescriptors(const Code& code) {
   ASSERT(pc_descriptors_list_ != NULL);
   const PcDescriptors& descriptors = PcDescriptors::Handle(
-      pc_descriptors_list_->FinalizePcDescriptors(code.EntryPoint()));
+      pc_descriptors_list_->FinalizePcDescriptors(code.PayloadStart()));
   if (!is_optimizing_) descriptors.Verify(parsed_function_.function());
   code.set_pc_descriptors(descriptors);
   code.set_lazy_deopt_pc_offset(lazy_deopt_pc_offset_);
 }
 
 
 RawArray* FlowGraphCompiler::CreateDeoptInfo(Assembler* assembler) {
   // No deopt information if we precompile (no deoptimization allowed).
   if (FLAG_precompiled_mode) {
     return Array::empty_array().raw();
@@ skipping 961 matching lines @@
 
 
 void FlowGraphCompiler::FrameStateClear() {
   ASSERT(!is_optimizing());
   frame_state_.TruncateTo(0);
 }
 #endif  // defined(DEBUG) && !defined(TARGET_ARCH_DBC)
 
 
 }  // namespace dart