Track live instance and allocation counts for classes

runtime/vm/stub_code_x64.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"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/compiler.h"
 #include "vm/dart_entry.h"
@@ skipping 1116 matching lines @@
     if (FLAG_use_slow_path) {
       __ jmp(&slow_case);
     } else {
       __ j(ABOVE_EQUAL, &slow_case);
     }
 
     // Successfully allocated the object(s), now update top to point to
     // next object start and initialize the object.
     __ movq(RDI, Immediate(heap->TopAddress()));
     __ movq(Address(RDI, 0), RBX);
+    __ BumpAllocationCount(Heap::kNew, cls.id());
 
     if (is_cls_parameterized) {
       // Initialize the type arguments field in the object.
       // RAX: new object start.
       // RCX: potential new object end and, if RCX != RBX, potential new
       // InstantiatedTypeArguments object start.
       // RBX: next object start.
       Label type_arguments_ready;
       __ movq(RDI, Address(RSP, kObjectTypeArgumentsOffset));
       __ cmpq(RCX, RBX);
@@ skipping 1018 matching lines @@
 
   __ movq(left, Address(RSP, 2 * kWordSize));
   __ movq(right, Address(RSP, 1 * kWordSize));
   GenerateIdenticalWithNumberCheckStub(assembler, left, right);
   __ ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64