Optimize AOT's switchable calls for the monomorphic case.

runtime/vm/profiler_service.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/profiler_service.h"
 
 #include "vm/growable_array.h"
 #include "vm/hash_map.h"
 #include "vm/log.h"
 #include "vm/native_symbol.h"
@@ skipping 1163 matching lines @@
 
   intptr_t NextFreeIndex() {
     cache_cursor_ = (cache_cursor_ + 1) % kCacheSize;
     return cache_cursor_;
   }
 
   intptr_t OffsetForPC(uword pc,
                        const Code& code,
                        ProcessedSample* sample,
                        intptr_t frame_index) {
-    intptr_t offset = pc - code.EntryPoint();
+    intptr_t offset = pc - code.PayloadStart();
     if (frame_index != 0) {
       // The PC of frames below the top frame is a call's return address,
       // which can belong to a different inlining interval than the call.
       offset--;
     } else if (sample->IsAllocationSample()) {
       // Allocation samples skip the top frame, so the top frame's pc is
       // also a call's return address.
       offset--;
     } else if (!sample->first_frame_executing()) {
       // If the first frame wasn't executing code (i.e. we started to collect
@@ skipping 139 matching lines @@
     // Build the live code table eagerly by populating it with code objects
     // from the processed sample buffer.
     const CodeLookupTable& code_lookup_table = samples_->code_lookup_table();
     for (intptr_t i = 0; i < code_lookup_table.length(); i++) {
       const CodeDescriptor* descriptor = code_lookup_table.At(i);
       ASSERT(descriptor != NULL);
       const Code& code = Code::Handle(descriptor->code());
       ASSERT(!code.IsNull());
       RegisterLiveProfileCode(
           new ProfileCode(ProfileCode::kDartCode,
-                          code.EntryPoint(),
-                          code.EntryPoint() + code.Size(),
+                          code.PayloadStart(),
+                          code.PayloadStart() + code.Size(),
                           code.compile_timestamp(),
                           code));
     }
 
     // Iterate over samples.
     for (intptr_t sample_index = 0;
          sample_index < samples_->length();
          sample_index++) {
       ProcessedSample* sample = samples_->At(sample_index);
       const int64_t timestamp = sample->timestamp();
@@ skipping 1539 matching lines @@
   // Disable thread interrupts while processing the buffer.
   DisableThreadInterruptsScope dtis(thread);
 
   ClearProfileVisitor clear_profile(isolate);
   sample_buffer->VisitSamples(&clear_profile);
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart