Optimize AOT's switchable calls for the monomorphic case.

runtime/vm/precompiler.cc

 // 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.
 
 #include "vm/precompiler.h"
 
 #include "vm/aot_optimizer.h"
 #include "vm/assembler.h"
 #include "vm/ast_printer.h"
 #include "vm/branch_optimizer.h"
@@ skipping 1857 matching lines @@
           ASSERT(!target_code_.IsFunctionCode());
           // Allocation stub or AllocateContext or AllocateArray or ...
         } else {
           // Static calls initially call the CallStaticFunction stub because
           // their target might not be compiled yet. After tree shaking, all
           // static call targets are compiled.
           // Cf. runtime entry PatchStaticCall called from CallStaticFunction
           // stub.
           ASSERT(target_.HasCode());
           target_code_ ^= target_.CurrentCode();
-          uword pc = pc_offset_.Value() + code_.EntryPoint();
+          uword pc = pc_offset_.Value() + code_.PayloadStart();
           CodePatcher::PatchStaticCallAt(pc, code_, target_code_);
         }
       }
 
       // We won't patch static calls anymore, so drop the static call table to
       // save space.
       code_.set_static_calls_target_table(Object::empty_array());
     }
 
    private:
@@ skipping 48 matching lines @@
           // arguments in addition to the receiver and use special stubs
           // with fast paths for Smi operations.
           if (ic_.NumArgsTested() != 1) continue;
 
           for (intptr_t j = 0; j < ic_.NumberOfChecks(); j++) {
             entry_ = ic_.GetTargetOrCodeAt(j);
             if (entry_.IsFunction()) {
               target_ ^= entry_.raw();
               ASSERT(target_.HasCode());
               target_code_ = target_.CurrentCode();
-              entry_point_ = Smi::FromAlignedAddress(target_code_.EntryPoint());
+              entry_point_ =
+                  Smi::FromAlignedAddress(target_code_.UncheckedEntryPoint());
               ic_.SetCodeAt(j, target_code_);
               ic_.SetEntryPointAt(j, entry_point_);
             } else {
               // We've already seen and switched this ICData.
               ASSERT(entry_.IsCode());
             }
           }
         } else if (entry_.raw() ==
                    StubCode::ICLookupThroughFunction_entry()->code()) {
           target_code_ = StubCode::ICLookupThroughCode_entry()->code();
@@ skipping 946 matching lines @@
       ASSERT(error.IsLanguageError() &&
              LanguageError::Cast(error).kind() != Report::kBailout);
       return error.raw();
     }
 
     per_compile_timer.Stop();
 
     if (trace_compiler) {
       THR_Print("--> '%s' entry: %#" Px " size: %" Pd " time: %" Pd64 " us\n",
                 function.ToFullyQualifiedCString(),
-                Code::Handle(function.CurrentCode()).EntryPoint(),
+                Code::Handle(function.CurrentCode()).PayloadStart(),
                 Code::Handle(function.CurrentCode()).Size(),
                 per_compile_timer.TotalElapsedTime());
     }
 
     if (FLAG_disassemble && FlowGraphPrinter::ShouldPrint(function)) {
       Disassembler::DisassembleCode(function, optimized);
     } else if (FLAG_disassemble_optimized &&
                optimized &&
                FlowGraphPrinter::ShouldPrint(function)) {
       Disassembler::DisassembleCode(function, true);
@@ skipping 25 matching lines @@
       CompilationPipeline::New(thread->zone(), function);
 
   ASSERT(FLAG_precompiled_mode);
   const bool optimized = function.IsOptimizable();  // False for natives.
   return PrecompileFunctionHelper(pipeline, function, optimized);
 }
 
 #endif  // DART_PRECOMPILER
 
 }  // namespace dart