Checking for stack height equality between full codegen and hydrogen.

build/features.gypi

 # Copyright 2013 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 15 matching lines @@
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 # Compile time controlled V8 features.
 
 {
   'variables': {
     'v8_compress_startup_data%': 'off',
 
     'v8_enable_disassembler%': 0,
 
+    'v8_enable_verify_stack_height%': 0,
+
     'v8_enable_gdbjit%': 0,
 
     'v8_object_print%': 0,
 
     'v8_enable_verify_heap%': 0,
 
     'v8_use_snapshot%': 'true',
 
     # With post mortem support enabled, metadata is embedded into libv8 that
     # describes various parameters of the VM for use by debuggers. See
     # tools/gen-postmortem-metadata.py for details.
     'v8_postmortem_support%': 'false',
 
     # Interpreted regexp engine exists as platform-independent alternative
     # based where the regular expression is compiled to a bytecode.
     'v8_interpreted_regexp%': 0,
 
     # Enable ECMAScript Internationalization API. Enabling this feature will
     # add a dependency on the ICU library.
     'v8_enable_i18n_support%': 1,
 
     # Enable compiler warnings when using V8_DEPRECATED apis.
     'v8_deprecation_warnings%': 0,
 
     # Use the v8 provided v8::Platform implementation.
     'v8_use_default_platform%': 1,
   },
   'target_defaults': {
     'conditions': [
+      ['v8_enable_verify_stack_height==1', {
+        'defines': ['VERIFY_STACK_HEIGHT',],
+      }],
       ['v8_enable_disassembler==1', {
         'defines': ['ENABLE_DISASSEMBLER',],
       }],
       ['v8_enable_gdbjit==1', {
         'defines': ['ENABLE_GDB_JIT_INTERFACE',],
       }],
       ['v8_object_print==1', {
         'defines': ['OBJECT_PRINT',],
       }],
       ['v8_enable_verify_heap==1', {
@@ skipping 43 matching lines @@
             'defines': ['ENABLE_EXTRA_CHECKS',],
           }],
           ['v8_enable_handle_zapping==1', {
             'defines': ['ENABLE_HANDLE_ZAPPING',],
           }],
         ],  # conditions
       },  # Release
     },  # configurations
   },  # target_defaults
 }