Merged: This is a speculative chain of reverts to improve a Chrome perf regression. See crbug.co ...

src/v8.gyp

 # Copyright 2012 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 153 matching lines @@
       ],
       'dependencies': [
         'v8_base',
       ],
       'include_dirs+': [
         '..',
         '<(DEPTH)',
       ],
       'sources': [
         '<(SHARED_INTERMEDIATE_DIR)/libraries.cc',
+        '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
         '<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc',
         '<(SHARED_INTERMEDIATE_DIR)/experimental-extras-libraries.cc',
         '<(INTERMEDIATE_DIR)/snapshot.cc',
       ],
       'actions': [
         {
           'action_name': 'run_mksnapshot',
           'inputs': [
             '<(mksnapshot_exec)',
           ],
@@ skipping 38 matching lines @@
       'type': 'static_library',
       'dependencies': [
         'v8_base',
       ],
       'include_dirs+': [
         '..',
         '<(DEPTH)',
       ],
       'sources': [
         '<(SHARED_INTERMEDIATE_DIR)/libraries.cc',
+        '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
         '<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc',
         '<(SHARED_INTERMEDIATE_DIR)/experimental-extras-libraries.cc',
         'snapshot/snapshot-empty.cc',
       ],
       'conditions': [
         ['want_separate_host_toolset==1', {
           'toolsets': ['host', 'target'],
           'dependencies': ['js2c#host'],
         }, {
           'toolsets': ['target'],
@@ skipping 1955 matching lines @@
               'dependencies': ['js2c#host'],
             }, {
               'dependencies': ['js2c'],
             }],
           ],
           'actions': [{
             'action_name': 'concatenate_natives_blob',
             'inputs': [
               '../tools/concatenate-files.py',
               '<(SHARED_INTERMEDIATE_DIR)/libraries.bin',
+              '<(SHARED_INTERMEDIATE_DIR)/libraries-experimental.bin',
               '<(SHARED_INTERMEDIATE_DIR)/libraries-extras.bin',
               '<(SHARED_INTERMEDIATE_DIR)/libraries-experimental-extras.bin',
             ],
             'conditions': [
               ['want_separate_host_toolset==1', {
                 'target_conditions': [
                   ['_toolset=="host"', {
                     'outputs': [
                       '<(PRODUCT_DIR)/natives_blob_host.bin',
                     ],
@@ skipping 54 matching lines @@
           'js/promise.js',
           'js/messages.js',
           'js/templates.js',
           'js/spread.js',
           'js/proxy.js',
           'js/harmony-string-padding.js',
           'debug/mirrors.js',
           'debug/debug.js',
           'debug/liveedit.js',
         ],
+        'experimental_library_files': [
+          'js/macros.py',
+          'messages.h',
+          'js/harmony-atomics.js',
+        ],
         'libraries_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries.bin',
+        'libraries_experimental_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-experimental.bin',
         'libraries_extras_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-extras.bin',
         'libraries_experimental_extras_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-experimental-extras.bin',
         'conditions': [
           ['v8_enable_i18n_support==1', {
             'library_files': ['js/i18n.js'],
           }],
         ],
       },
       'actions': [
         {
@@ skipping 22 matching lines @@
             'python',
             '../tools/js2c.py',
             '<(SHARED_INTERMEDIATE_DIR)/libraries.cc',
             'CORE',
             '<@(library_files)',
             '--startup_blob', '<@(libraries_bin_file)',
             '--nojs',
           ],
         },
         {
+          'action_name': 'js2c_experimental',
+          'inputs': [
+            '../tools/js2c.py',
+            '<@(experimental_library_files)',
+          ],
+          'outputs': ['<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc'],
+          'action': [
+            'python',
+            '../tools/js2c.py',
+            '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
+            'EXPERIMENTAL',
+            '<@(experimental_library_files)',
+          ],
+        },
+        {
+          'action_name': 'js2c_experimental_bin',
+          'inputs': [
+            '../tools/js2c.py',
+            '<@(experimental_library_files)',
+          ],
+          'outputs': ['<@(libraries_experimental_bin_file)'],
+          'action': [
+            'python',
+            '../tools/js2c.py',
+            '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
+            'EXPERIMENTAL',
+            '<@(experimental_library_files)',
+            '--startup_blob', '<@(libraries_experimental_bin_file)',
+            '--nojs',
+          ],
+        },
+        {
           'action_name': 'js2c_extras',
           'inputs': [
             '../tools/js2c.py',
             '<@(v8_extra_library_files)',
           ],
           'outputs': ['<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc'],
           'action': [
             'python',
             '../tools/js2c.py',
             '<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc',
@@ skipping 131 matching lines @@
       'conditions': [
         ['want_separate_host_toolset_mkpeephole==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
       ],
     },
   ],
 }