Remove the special stub code region as we don't need it anymore. With the new frame layout conventi…

vm/heap.h

 // Copyright (c) 2012, 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_HEAP_H_
 #define VM_HEAP_H_
 
 #include "platform/assert.h"
 #include "vm/allocation.h"
 #include "vm/flags.h"
@@ skipping 11 matching lines @@
 DECLARE_FLAG(bool, verbose_gc);
 DECLARE_FLAG(bool, verify_before_gc);
 DECLARE_FLAG(bool, verify_after_gc);
 DECLARE_FLAG(bool, gc_at_alloc);
 
 class Heap {
  public:
   enum Space {
     kNew,
     kOld,
-    kDartCode,
-    kStubCode,
+    kCode,
   };
 
   enum ApiCallbacks {
     kIgnoreApiCallbacks,
     kInvokeApiCallbacks
   };
 
   // Default allocation sizes in MB for the old gen and code heaps.
   static const intptr_t kHeapSizeInMB = 512;
   static const intptr_t kCodeHeapSizeInMB = 8;
-  static const intptr_t kStubCodeHeapSizeInKB = 256;
 
   ~Heap();
 
   uword Allocate(intptr_t size, Space space) {
     switch (space) {
       case kNew:
         // Do not attempt to allocate very large objects in new space.
         if (!PageSpace::IsPageAllocatableSize(size)) {
           return AllocateOld(size);
         }
         return AllocateNew(size);
       case kOld:
         return AllocateOld(size);
-      case kDartCode:
+      case kCode:
         return AllocateCode(code_space_, size);
-      case kStubCode:
-        return AllocateCode(stub_code_space_, size);
       default:
         UNREACHABLE();
     }
     return 0;
   }
 
   uword TryAllocate(intptr_t size, Space space) {
     switch (space) {
       case kNew:
         return new_space_->TryAllocate(size);
       case kOld:
         return old_space_->TryAllocate(size);
-      case kDartCode:
+      case kCode:
         return code_space_->TryAllocate(size);
-      case kStubCode:
-        return stub_code_space_->TryAllocate(size);
       default:
         UNREACHABLE();
     }
     return 0;
   }
 
   // Heap contains the specified address.
   bool Contains(uword addr) const;
   bool CodeContains(uword addr) const;
   bool StubCodeContains(uword addr) const;
@@ skipping 59 matching lines @@
  public:
   NoGCScope() {}
  private:
   DISALLOW_COPY_AND_ASSIGN(NoGCScope);
 };
 #endif  // defined(DEBUG)
 
 }  // namespace dart
 
 #endif  // VM_HEAP_H_