Improve CodeRegionTable build time by 30x

runtime/vm/isolate.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_ISOLATE_H_
 #define VM_ISOLATE_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/thread.h"
@@ skipping 206 matching lines @@
   }
 
   // The current stack limit.  This may be overwritten with a special
   // value to trigger interrupts.
   uword stack_limit() const { return stack_limit_; }
 
   // The true stack limit for this isolate.
   uword saved_stack_limit() const { return saved_stack_limit_; }
 
   // Retrieve the stack address bounds.
-  bool GetStackBounds(uintptr_t* lower, uintptr_t* upper);
+  bool GetStackBounds(uword* lower, uword* upper);
 
   static uword GetSpecifiedStackSize();
 
   static const intptr_t kStackSizeBuffer = (4 * KB * kWordSize);
 
   enum {
     kApiInterrupt = 0x1,      // An interrupt from Dart_InterruptIsolate.
     kMessageInterrupt = 0x2,  // An interrupt to process an out of band message.
     kStoreBufferInterrupt = 0x4,  // An interrupt to process the store buffer.
     kVmStatusInterrupt = 0x8,     // An interrupt to process a status request.
@@ skipping 381 matching lines @@
   char* script_url_;
   char* library_url_;
   char* class_name_;
   char* function_name_;
   char* exception_callback_name_;
 };
 
 }  // namespace dart
 
 #endif  // VM_ISOLATE_H_