Optimize AOT's switchable calls for the monomorphic case.

runtime/vm/profiler.h

 // 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.
 
 #ifndef VM_PROFILER_H_
 #define VM_PROFILER_H_
 
 #include "vm/allocation.h"
 #include "vm/bitfield.h"
 #include "vm/code_observers.h"
@@ skipping 405 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(Sample);
 };
 
 
 // A Code object descriptor.
 class CodeDescriptor : public ZoneAllocated {
  public:
   explicit CodeDescriptor(const Code& code);
 
-  uword Entry() const;
+  uword Start() const;
 
   uword Size() const;
 
   int64_t CompileTimestamp() const;
 
   RawCode* code() const {
     return code_.raw();
   }
 
   const char* Name() const {
     const String& name = String::Handle(code_.Name());
     return name.ToCString();
   }
 
   bool Contains(uword pc) const {
-    uword end = Entry() + Size();
-    return (pc >= Entry()) && (pc < end);
+    uword end = Start() + Size();
+    return (pc >= Start()) && (pc < end);
   }
 
   static int Compare(CodeDescriptor* const* a,
                      CodeDescriptor* const* b) {
     ASSERT(a != NULL);
     ASSERT(b != NULL);
 
-    uword a_entry = (*a)->Entry();
-    uword b_entry = (*b)->Entry();
+    uword a_start = (*a)->Start();
+    uword b_start = (*b)->Start();
 
-    if (a_entry < b_entry) {
+    if (a_start < b_start) {
       return -1;
-    } else if (a_entry > b_entry) {
+    } else if (a_start > b_start) {
       return 1;
     } else {
       return 0;
     }
   }
 
  private:
   const Code& code_;
 
   DISALLOW_COPY_AND_ASSIGN(CodeDescriptor);
@@ skipping 212 matching lines @@
  private:
   ZoneGrowableArray<ProcessedSample*> samples_;
   CodeLookupTable* code_lookup_table_;
 
   DISALLOW_COPY_AND_ASSIGN(ProcessedSampleBuffer);
 };
 
 }  // namespace dart
 
 #endif  // VM_PROFILER_H_