deps: upgrade V8 to 4.7.80.24

Pick up the latest branch head for V8 4.7:
https://github.com/v8/v8/commit/be169f8df059040e6a53ec1dd4579d8bca2167b5

Full change history for the 4.7 branch:
https://chromium.googlesource.com/v8/v8.git/+log/branch-heads/4.7

V8 blog post about what is new on V8 4.7:
http://v8project.blogspot.de/2015/10/v8-release-47.html

PR-URL: https://github.com/nodejs/node/pull/4106
Reviewed-By: bnoordhuis - Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: targos - Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: rvagg - Rod Vagg <rod@vagg.org>

20 files changed, 473 insertions, 397 deletions

diff --git a/deps/v8/tools/cfi/blacklist.txt b/deps/v8/tools/cfi/blacklist.txt
new file mode 100644
index 0000000000..0ad565eafb
--- /dev/null
+++ b/deps/v8/tools/cfi/blacklist.txt
@@ -0,0 +1,4 @@
+# All std:: types
+# This should be possible to remove, if/when we build against
+# a statically linked libc++.
+type:std::*
\ No newline at end of file
diff --git a/deps/v8/tools/check-name-clashes.py b/deps/v8/tools/check-name-clashes.py
deleted file mode 100755
index 25f3aace55..0000000000
--- a/deps/v8/tools/check-name-clashes.py
+++ /dev/null
@@ -1,118 +0,0 @@
-#!/usr/bin/env python
-# Copyright 2014 the V8 project authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-import js2c
-import os
-import re
-import sys
-
-FILENAME = "src/runtime/runtime.h"
-LISTHEAD = re.compile(r"#define\s+(FOR_EACH_\w+)\((\w+)\)")
-LISTBODY = re.compile(r".*\\$")
-
-
-class Function(object):
-  def __init__(self, match):
-    self.name = match.group(1).strip()
-
-def ListMacroRe(list):
-  macro = LISTHEAD.match(list[0]).group(2)
-  re_string = "\s*%s\((\w+)" % macro
-  return re.compile(re_string)
-
-
-def FindLists(filename):
-  lists = []
-  current_list = []
-  mode = "SEARCHING"
-  with open(filename, "r") as f:
-    for line in f:
-      if mode == "SEARCHING":
-        match = LISTHEAD.match(line)
-        if match:
-          mode = "APPENDING"
-          current_list.append(line)
-      else:
-        current_list.append(line)
-        match = LISTBODY.match(line)
-        if not match:
-          mode = "SEARCHING"
-          lists.append(current_list)
-          current_list = []
-  return lists
-
-
-# Detects runtime functions by parsing FILENAME.
-def FindRuntimeFunctions():
-  functions = []
-  lists = FindLists(FILENAME)
-  for list in lists:
-    function_re = ListMacroRe(list)
-    for line in list:
-      match = function_re.match(line)
-      if match:
-        functions.append(Function(match))
-  return functions
-
-
-class Builtin(object):
-  def __init__(self, match):
-    self.name = match.group(1)
-
-
-def FindJSNatives():
-  PATH = "src"
-  fileslist = []
-  for (root, dirs, files) in os.walk(PATH):
-    for f in files:
-      if f.endswith(".js"):
-        fileslist.append(os.path.join(root, f))
-  natives = []
-  regexp = re.compile("^function (\w+)\s*\((.*?)\) {")
-  matches = 0
-  for filename in fileslist:
-    with open(filename, "r") as f:
-      file_contents = f.read()
-    file_contents = js2c.ExpandInlineMacros(file_contents)
-    lines = file_contents.split("\n")
-    partial_line = ""
-    for line in lines:
-      if line.startswith("function") and not '{' in line:
-        partial_line += line.rstrip()
-        continue
-      if partial_line:
-        partial_line += " " + line.strip()
-        if '{' in line:
-          line = partial_line
-          partial_line = ""
-        else:
-          continue
-      match = regexp.match(line)
-      if match:
-        natives.append(Builtin(match))
-  return natives
-
-
-def Main():
-  functions = FindRuntimeFunctions()
-  natives = FindJSNatives()
-  errors = 0
-  runtime_map = {}
-  for f in functions:
-    runtime_map[f.name] = 1
-  for b in natives:
-    if b.name in runtime_map:
-      print("JS_Native/Runtime_Function name clash: %s" % b.name)
-      errors += 1
-
-  if errors > 0:
-    return 1
-  print("Runtime/Natives name clashes: checked %d/%d functions, all good." %
-        (len(functions), len(natives)))
-  return 0
-
-
-if __name__ == "__main__":
-  sys.exit(Main())
diff --git a/deps/v8/tools/eval_gc_nvp.py b/deps/v8/tools/eval_gc_nvp.py
new file mode 100755
index 0000000000..8a9b8e7072
--- /dev/null
+++ b/deps/v8/tools/eval_gc_nvp.py
@@ -0,0 +1,151 @@
+#!/usr/bin/env python
+#
+# Copyright 2015 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""This script is used to analyze GCTracer's NVP output."""
+
+
+from argparse import ArgumentParser
+from copy import deepcopy
+from gc_nvp_common import split_nvp
+from math import log
+from sys import stdin
+
+
+class LinearBucket:
+  def __init__(self, granularity):
+    self.granularity = granularity
+
+  def value_to_bucket(self, value):
+    return int(value / self.granularity)
+
+  def bucket_to_range(self, bucket):
+    return (bucket * self.granularity, (bucket + 1) * self.granularity)
+
+
+class Log2Bucket:
+  def __init__(self, start):
+    self.start = int(log(start, 2)) - 1
+
+  def value_to_bucket(self, value):
+    index = int(log(value, 2))
+    index -= self.start
+    if index < 0:
+      index = 0
+    return index
+
+  def bucket_to_range(self, bucket):
+    if bucket == 0:
+      return (0, 2 ** (self.start + 1))
+    bucket += self.start
+    return (2 ** bucket, 2 ** (bucket + 1))
+
+
+class Histogram:
+  def __init__(self, bucket_trait, fill_empty):
+    self.histogram = {}
+    self.fill_empty = fill_empty
+    self.bucket_trait = bucket_trait
+
+  def add(self, key):
+    index = self.bucket_trait.value_to_bucket(key)
+    if index not in self.histogram:
+      self.histogram[index] = 0
+    self.histogram[index] += 1
+
+  def __str__(self):
+    ret = []
+    keys = self.histogram.keys()
+    keys.sort()
+    last = keys[len(keys) - 1]
+    for i in range(0, last + 1):
+      (min_value, max_value) = self.bucket_trait.bucket_to_range(i)
+      if i == keys[0]:
+        keys.pop(0)
+        ret.append("  [{0},{1}[: {2}".format(
+          str(min_value), str(max_value), self.histogram[i]))
+      else:
+        if self.fill_empty:
+          ret.append("  [{0},{1}[: {2}".format(
+            str(min_value), str(max_value), 0))
+    return "\n".join(ret)
+
+
+class Category:
+  def __init__(self, key, histogram):
+    self.key = key
+    self.values = []
+    self.histogram = histogram
+
+  def process_entry(self, entry):
+    if self.key in entry:
+      self.values.append(float(entry[self.key]))
+      if self.histogram:
+        self.histogram.add(float(entry[self.key]))
+
+  def __str__(self):
+    ret = [self.key]
+    ret.append("  len: {0}".format(len(self.values)))
+    if len(self.values) > 0:
+      ret.append("  min: {0}".format(min(self.values)))
+      ret.append("  max: {0}".format(max(self.values)))
+      ret.append("  avg: {0}".format(sum(self.values) / len(self.values)))
+      if self.histogram:
+        ret.append(str(self.histogram))
+    return "\n".join(ret)
+
+
+def main():
+  parser = ArgumentParser(description="Process GCTracer's NVP output")
+  parser.add_argument('keys', metavar='KEY', type=str, nargs='+',
+                      help='the keys of NVPs to process')
+  parser.add_argument('--histogram-type', metavar='<linear|log2>',
+                      type=str, nargs='?', default="linear",
+                      help='histogram type to use (default: linear)')
+  linear_group = parser.add_argument_group('linear histogram specific')
+  linear_group.add_argument('--linear-histogram-granularity',
+                            metavar='GRANULARITY', type=int, nargs='?',
+                            default=5,
+                            help='histogram granularity (default: 5)')
+  log2_group = parser.add_argument_group('log2 histogram specific')
+  log2_group.add_argument('--log2-histogram-init-bucket', metavar='START',
+                          type=int, nargs='?', default=64,
+                          help='initial buck size (default: 64)')
+  parser.add_argument('--histogram-omit-empty-buckets',
+                      dest='histogram_omit_empty',
+                      action='store_true',
+                      help='omit empty histogram buckets')
+  parser.add_argument('--no-histogram', dest='histogram',
+                      action='store_false', help='do not print histogram')
+  parser.set_defaults(histogram=True)
+  parser.set_defaults(histogram_omit_empty=False)
+  args = parser.parse_args()
+
+  histogram = None
+  if args.histogram:
+    bucket_trait = None
+    if args.histogram_type == "log2":
+      bucket_trait = Log2Bucket(args.log2_histogram_init_bucket)
+    else:
+      bucket_trait = LinearBucket(args.linear_histogram_granularity)
+    histogram = Histogram(bucket_trait, not args.histogram_omit_empty)
+
+  categories = [ Category(key, deepcopy(histogram))
+                 for key in args.keys ]
+
+  while True:
+    line = stdin.readline()
+    if not line:
+      break
+    obj = split_nvp(line)
+    for category in categories:
+      category.process_entry(obj)
+
+  for category in categories:
+    print(category)
+
+
+if __name__ == '__main__':
+  main()
diff --git a/deps/v8/tools/fuzz-harness.sh b/deps/v8/tools/fuzz-harness.sh
index cef59868a9..31023de3ab 100755
--- a/deps/v8/tools/fuzz-harness.sh
+++ b/deps/v8/tools/fuzz-harness.sh
@@ -85,7 +85,9 @@ python -u "$jsfunfuzz_dir/jsfunfuzz/multi_timed_run.py" 300 \
     "$d8" $flags "$jsfunfuzz_dir/jsfunfuzz/jsfunfuzz.js"
 exit_code=$(cat w* | grep " looking good" -c)
 exit_code=$((100-exit_code))
-tar -cjf fuzz-results-$(date +%Y%m%d%H%M%S).tar.bz2 err-* w*
+archive=fuzz-results-$(date +%Y%m%d%H%M%S).tar.bz2
+echo "Creating archive $archive"
+tar -cjf $archive err-* w*
 rm -f err-* w*
 
 echo "Total failures: $exit_code"
diff --git a/deps/v8/tools/gen-postmortem-metadata.py b/deps/v8/tools/gen-postmortem-metadata.py
index e3c9dbe076..1b6a6bbcf0 100644
--- a/deps/v8/tools/gen-postmortem-metadata.py
+++ b/deps/v8/tools/gen-postmortem-metadata.py
@@ -98,30 +98,6 @@ consts_misc = [
         'value': 'PropertyDetails::FieldIndexField::kMask' },
     { 'name': 'prop_index_shift',
         'value': 'PropertyDetails::FieldIndexField::kShift' },
-    { 'name': 'prop_representation_mask',
-        'value': 'PropertyDetails::RepresentationField::kMask' },
-    { 'name': 'prop_representation_shift',
-        'value': 'PropertyDetails::RepresentationField::kShift' },
-    { 'name': 'prop_representation_integer8',
-        'value': 'Representation::Kind::kInteger8' },
-    { 'name': 'prop_representation_uinteger8',
-        'value': 'Representation::Kind::kUInteger8' },
-    { 'name': 'prop_representation_integer16',
-        'value': 'Representation::Kind::kInteger16' },
-    { 'name': 'prop_representation_uinteger16',
-        'value': 'Representation::Kind::kUInteger16' },
-    { 'name': 'prop_representation_smi',
-        'value': 'Representation::Kind::kSmi' },
-    { 'name': 'prop_representation_integer32',
-        'value': 'Representation::Kind::kInteger32' },
-    { 'name': 'prop_representation_double',
-        'value': 'Representation::Kind::kDouble' },
-    { 'name': 'prop_representation_heapobject',
-        'value': 'Representation::Kind::kHeapObject' },
-    { 'name': 'prop_representation_tagged',
-        'value': 'Representation::Kind::kTagged' },
-    { 'name': 'prop_representation_external',
-        'value': 'Representation::Kind::kExternal' },
 
     { 'name': 'prop_desc_key',
         'value': 'DescriptorArray::kDescriptorKey' },
@@ -145,10 +121,6 @@ consts_misc = [
         'value': 'Map::ElementsKindBits::kShift' },
     { 'name': 'bit_field3_dictionary_map_shift',
         'value': 'Map::DictionaryMap::kShift' },
-    { 'name': 'bit_field3_number_of_own_descriptors_mask',
-        'value': 'Map::NumberOfOwnDescriptorsBits::kMask' },
-    { 'name': 'bit_field3_number_of_own_descriptors_shift',
-        'value': 'Map::NumberOfOwnDescriptorsBits::kShift' },
 
     { 'name': 'off_fp_context',
         'value': 'StandardFrameConstants::kContextOffset' },
@@ -167,37 +139,20 @@ consts_misc = [
         'value': 'ScopeInfo::kStackLocalCount' },
     { 'name': 'scopeinfo_idx_ncontextlocals',
         'value': 'ScopeInfo::kContextLocalCount' },
-    { 'name': 'scopeinfo_idx_ncontextglobals',
-        'value': 'ScopeInfo::kContextGlobalCount' },
     { 'name': 'scopeinfo_idx_first_vars',
         'value': 'ScopeInfo::kVariablePartIndex' },
-
-    { 'name': 'sharedfunctioninfo_start_position_mask',
-        'value': 'SharedFunctionInfo::kStartPositionMask' },
-    { 'name': 'sharedfunctioninfo_start_position_shift',
-        'value': 'SharedFunctionInfo::kStartPositionShift' },
-
-    { 'name': 'jsarray_buffer_was_neutered_mask',
-        'value': 'JSArrayBuffer::WasNeutered::kMask' },
-    { 'name': 'jsarray_buffer_was_neutered_shift',
-        'value': 'JSArrayBuffer::WasNeutered::kShift' },
 ];
 
 #
 # The following useful fields are missing accessors, so we define fake ones.
 #
 extras_accessors = [
-    'JSFunction, context, Context, kContextOffset',
-    'Context, closure_index, int, CLOSURE_INDEX',
-    'Context, global_object_index, int, GLOBAL_OBJECT_INDEX',
-    'Context, previous_index, int, PREVIOUS_INDEX',
-    'Context, min_context_slots, int, MIN_CONTEXT_SLOTS',
     'HeapObject, map, Map, kMapOffset',
     'JSObject, elements, Object, kElementsOffset',
     'FixedArray, data, uintptr_t, kHeaderSize',
-    'JSTypedArray, length, Object, kLengthOffset',
     'JSArrayBuffer, backing_store, Object, kBackingStoreOffset',
     'JSArrayBufferView, byte_offset, Object, kByteOffsetOffset',
+    'JSTypedArray, length, Object, kLengthOffset',
     'Map, instance_attributes, int, kInstanceAttributesOffset',
     'Map, inobject_properties_or_constructor_function_index, int, kInObjectPropertiesOrConstructorFunctionIndexOffset',
     'Map, instance_size, int, kInstanceSizeOffset',
@@ -207,7 +162,6 @@ extras_accessors = [
     'Map, prototype, Object, kPrototypeOffset',
     'NameDictionaryShape, prefix_size, int, kPrefixSize',
     'NameDictionaryShape, entry_size, int, kEntrySize',
-    'NameDictionary, prefix_start_index, int, kPrefixStartIndex',
     'SeededNumberDictionaryShape, prefix_size, int, kPrefixSize',
     'UnseededNumberDictionaryShape, prefix_size, int, kPrefixSize',
     'NumberDictionaryShape, entry_size, int, kEntrySize',
@@ -219,7 +173,6 @@ extras_accessors = [
     'SeqOneByteString, chars, char, kHeaderSize',
     'SeqTwoByteString, chars, char, kHeaderSize',
     'SharedFunctionInfo, code, Code, kCodeOffset',
-    'SharedFunctionInfo, scope_info, ScopeInfo, kScopeInfoOffset',
     'SlicedString, parent, String, kParentOffset',
     'Code, instruction_start, uintptr_t, kHeaderSize',
     'Code, instruction_size, int, kInstructionSizeOffset',
@@ -274,20 +227,6 @@ footer = '''
 '''
 
 #
-# Get the base class
-#
-def get_base_class(klass):
-        if (klass == 'Object'):
-                return klass;
-
-        if (not (klass in klasses)):
-                return None;
-
-        k = klasses[klass];
-
-        return get_base_class(k['parent']);
-
-#
 # Loads class hierarchy and type information from "objects.h".
 #
 def load_objects():
@@ -325,14 +264,12 @@ def load_objects():
                         typestr += line;
                         continue;
 
-                match = re.match('class (\w[^:]*)(: public (\w[^{]*))?\s*{\s*',
+                match = re.match('class (\w[^\s:]*)(: public (\w[^\s{]*))?\s*{',
                     line);
 
                 if (match):
-                        klass = match.group(1).rstrip().lstrip();
+                        klass = match.group(1);
                         pklass = match.group(3);
-                        if (pklass):
-                                pklass = pklass.rstrip().lstrip();
                         klasses[klass] = { 'parent': pklass };
 
         #
@@ -583,9 +520,6 @@ def emit_config():
         keys.sort();
         for klassname in keys:
                 pklass = klasses[klassname]['parent'];
-                bklass = get_base_class(klassname);
-                if (bklass != 'Object'):
-                        continue;
                 if (pklass == None):
                         continue;
 
diff --git a/deps/v8/tools/gyp/v8.gyp b/deps/v8/tools/gyp/v8.gyp
index 1e5705d7a5..bcb580167e 100644
--- a/deps/v8/tools/gyp/v8.gyp
+++ b/deps/v8/tools/gyp/v8.gyp
@@ -30,8 +30,10 @@
     'icu_use_data_file_flag%': 0,
     'v8_code': 1,
     'v8_random_seed%': 314159265,
+    'v8_vector_stores%': 0,
     'embed_script%': "",
     'v8_extra_library_files%': [],
+    'v8_experimental_extra_library_files%': [],
     'mksnapshot_exec': '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)mksnapshot<(EXECUTABLE_SUFFIX)',
   },
   'includes': ['../../build/toolchain.gypi', '../../build/features.gypi'],
@@ -182,6 +184,7 @@
         '<(SHARED_INTERMEDIATE_DIR)/code-stub-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': [
@@ -203,12 +206,15 @@
               ['v8_random_seed!=0', {
                 'mksnapshot_flags': ['--random-seed', '<(v8_random_seed)'],
               }],
+              ['v8_vector_stores!=0', {
+                'mksnapshot_flags': ['--vector-stores'],
+              }],
             ],
           },
           'action': [
             '<(mksnapshot_exec)',
             '<@(mksnapshot_flags)',
-            '<@(INTERMEDIATE_DIR)/snapshot.cc',
+            '--startup_src', '<@(INTERMEDIATE_DIR)/snapshot.cc',
             '<(embed_script)',
           ],
         },
@@ -228,6 +234,7 @@
         '<(SHARED_INTERMEDIATE_DIR)/code-stub-libraries.cc',
         '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
         '<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc',
+        '<(SHARED_INTERMEDIATE_DIR)/experimental-extras-libraries.cc',
         '../../src/snapshot/snapshot-empty.cc',
       ],
       'conditions': [
@@ -304,6 +311,9 @@
                   ['v8_random_seed!=0', {
                     'mksnapshot_flags': ['--random-seed', '<(v8_random_seed)'],
                   }],
+                  ['v8_vector_stores!=0', {
+                    'mksnapshot_flags': ['--vector-stores'],
+                  }],
                 ],
               },
               'conditions': [
@@ -311,25 +321,21 @@
                   'target_conditions': [
                     ['_toolset=="host"', {
                       'outputs': [
-                        '<(INTERMEDIATE_DIR)/snapshot.cc',
                         '<(PRODUCT_DIR)/snapshot_blob_host.bin',
                       ],
                       'action': [
                         '<(mksnapshot_exec)',
                         '<@(mksnapshot_flags)',
-                        '<@(INTERMEDIATE_DIR)/snapshot.cc',
                         '--startup_blob', '<(PRODUCT_DIR)/snapshot_blob_host.bin',
                         '<(embed_script)',
                       ],
                     }, {
                       'outputs': [
-                        '<(INTERMEDIATE_DIR)/snapshot.cc',
                         '<(PRODUCT_DIR)/snapshot_blob.bin',
                       ],
                       'action': [
                         '<(mksnapshot_exec)',
                         '<@(mksnapshot_flags)',
-                        '<@(INTERMEDIATE_DIR)/snapshot.cc',
                         '--startup_blob', '<(PRODUCT_DIR)/snapshot_blob.bin',
                         '<(embed_script)',
                       ],
@@ -337,13 +343,11 @@
                   ],
                 }, {
                   'outputs': [
-                    '<(INTERMEDIATE_DIR)/snapshot.cc',
                     '<(PRODUCT_DIR)/snapshot_blob.bin',
                   ],
                   'action': [
                     '<(mksnapshot_exec)',
                     '<@(mksnapshot_flags)',
-                    '<@(INTERMEDIATE_DIR)/snapshot.cc',
                     '--startup_blob', '<(PRODUCT_DIR)/snapshot_blob.bin',
                     '<(embed_script)',
                   ],
@@ -385,8 +389,6 @@
         '../../src/allocation.h',
         '../../src/allocation-site-scopes.cc',
         '../../src/allocation-site-scopes.h',
-        '../../src/allocation-tracker.cc',
-        '../../src/allocation-tracker.h',
         '../../src/api.cc',
         '../../src/api.h',
         '../../src/api-natives.cc',
@@ -397,14 +399,17 @@
         '../../src/assembler.h',
         '../../src/assert-scope.h',
         '../../src/assert-scope.cc',
-        '../../src/ast-value-factory.cc',
-        '../../src/ast-value-factory.h',
+        '../../src/ast-expression-visitor.cc',
+        '../../src/ast-expression-visitor.h',
         '../../src/ast-literal-reindexer.cc',
         '../../src/ast-literal-reindexer.h',
         '../../src/ast-numbering.cc',
         '../../src/ast-numbering.h',
+        '../../src/ast-value-factory.cc',
+        '../../src/ast-value-factory.h',
         '../../src/ast.cc',
         '../../src/ast.h',
+        '../../src/atomic-utils.h',
         '../../src/background-parsing-task.cc',
         '../../src/background-parsing-task.h',
         '../../src/bailout-reason.cc',
@@ -429,14 +434,11 @@
         '../../src/char-predicates-inl.h',
         '../../src/char-predicates.h',
         '../../src/checks.h',
-        '../../src/circular-queue-inl.h',
-        '../../src/circular-queue.h',
         '../../src/code-factory.cc',
         '../../src/code-factory.h',
         '../../src/code-stubs.cc',
         '../../src/code-stubs.h',
         '../../src/code-stubs-hydrogen.cc',
-        '../../src/code.h',
         '../../src/codegen.cc',
         '../../src/codegen.h',
         '../../src/compilation-cache.cc',
@@ -455,6 +457,8 @@
         '../../src/compiler/ast-loop-assignment-analyzer.h',
         '../../src/compiler/basic-block-instrumentor.cc',
         '../../src/compiler/basic-block-instrumentor.h',
+        '../../src/compiler/bytecode-graph-builder.cc',
+        '../../src/compiler/bytecode-graph-builder.h',
         '../../src/compiler/change-lowering.cc',
         '../../src/compiler/change-lowering.h',
         '../../src/compiler/c-linkage.cc',
@@ -536,6 +540,8 @@
         '../../src/compiler/linkage.h',
         '../../src/compiler/liveness-analyzer.cc',
         '../../src/compiler/liveness-analyzer.h',
+        '../../src/compiler/live-range-separator.cc',
+        '../../src/compiler/live-range-separator.h',
         '../../src/compiler/load-elimination.cc',
         '../../src/compiler/load-elimination.h',
         '../../src/compiler/loop-analysis.cc',
@@ -573,8 +579,6 @@
         '../../src/compiler/pipeline.h',
         '../../src/compiler/pipeline-statistics.cc',
         '../../src/compiler/pipeline-statistics.h',
-        '../../src/compiler/preprocess-live-ranges.cc',
-        '../../src/compiler/preprocess-live-ranges.h',
         '../../src/compiler/raw-machine-assembler.cc',
         '../../src/compiler/raw-machine-assembler.h',
         '../../src/compiler/register-allocator.cc',
@@ -614,6 +618,7 @@
         '../../src/compiler.h',
         '../../src/context-measure.cc',
         '../../src/context-measure.h',
+        '../../src/contexts-inl.h',
         '../../src/contexts.cc',
         '../../src/contexts.h',
         '../../src/conversions-inl.h',
@@ -621,9 +626,6 @@
         '../../src/conversions.h',
         '../../src/counters.cc',
         '../../src/counters.h',
-        '../../src/cpu-profiler-inl.h',
-        '../../src/cpu-profiler.cc',
-        '../../src/cpu-profiler.h',
         '../../src/date.cc',
         '../../src/date.h',
         '../../src/dateparser-inl.h',
@@ -696,11 +698,8 @@
         '../../src/handles.cc',
         '../../src/handles.h',
         '../../src/hashmap.h',
-        '../../src/heap-profiler.cc',
-        '../../src/heap-profiler.h',
-        '../../src/heap-snapshot-generator-inl.h',
-        '../../src/heap-snapshot-generator.cc',
-        '../../src/heap-snapshot-generator.h',
+        '../../src/heap/array-buffer-tracker.cc',
+        '../../src/heap/array-buffer-tracker.h',
         '../../src/heap/memory-reducer.cc',
         '../../src/heap/memory-reducer.h',
         '../../src/heap/gc-idle-time-handler.cc',
@@ -710,17 +709,26 @@
         '../../src/heap/heap-inl.h',
         '../../src/heap/heap.cc',
         '../../src/heap/heap.h',
-        '../../src/heap/identity-map.cc',
-        '../../src/heap/identity-map.h',
         '../../src/heap/incremental-marking-inl.h',
+        '../../src/heap/incremental-marking-job.cc',
+        '../../src/heap/incremental-marking-job.h',
         '../../src/heap/incremental-marking.cc',
         '../../src/heap/incremental-marking.h',
         '../../src/heap/mark-compact-inl.h',
         '../../src/heap/mark-compact.cc',
         '../../src/heap/mark-compact.h',
+        '../../src/heap/object-stats.cc',
+        '../../src/heap/object-stats.h',
         '../../src/heap/objects-visiting-inl.h',
         '../../src/heap/objects-visiting.cc',
         '../../src/heap/objects-visiting.h',
+        '../../src/heap/scavenge-job.h',
+        '../../src/heap/scavenge-job.cc',
+        '../../src/heap/scavenger-inl.h',
+        '../../src/heap/scavenger.cc',
+        '../../src/heap/scavenger.h',
+        '../../src/heap/slots-buffer.cc',
+        '../../src/heap/slots-buffer.h',
         '../../src/heap/spaces-inl.h',
         '../../src/heap/spaces.cc',
         '../../src/heap/spaces.h',
@@ -796,6 +804,8 @@
         '../../src/ic/ic.h',
         '../../src/ic/ic-compiler.cc',
         '../../src/ic/ic-compiler.h',
+        '../../src/identity-map.cc',
+        '../../src/identity-map.h',
         '../../src/interface-descriptors.cc',
         '../../src/interface-descriptors.h',
         '../../src/interpreter/bytecodes.cc',
@@ -804,8 +814,11 @@
         '../../src/interpreter/bytecode-generator.h',
         '../../src/interpreter/bytecode-array-builder.cc',
         '../../src/interpreter/bytecode-array-builder.h',
+        '../../src/interpreter/bytecode-array-iterator.cc',
+        '../../src/interpreter/bytecode-array-iterator.h',
         '../../src/interpreter/interpreter.cc',
         '../../src/interpreter/interpreter.h',
+        '../../src/isolate-inl.h',
         '../../src/isolate.cc',
         '../../src/isolate.h',
         '../../src/json-parser.h',
@@ -858,9 +871,25 @@
         '../../src/preparser.h',
         '../../src/prettyprinter.cc',
         '../../src/prettyprinter.h',
-        '../../src/profile-generator-inl.h',
-        '../../src/profile-generator.cc',
-        '../../src/profile-generator.h',
+        '../../src/profiler/allocation-tracker.cc',
+        '../../src/profiler/allocation-tracker.h',
+        '../../src/profiler/circular-queue-inl.h',
+        '../../src/profiler/circular-queue.h',
+        '../../src/profiler/cpu-profiler-inl.h',
+        '../../src/profiler/cpu-profiler.cc',
+        '../../src/profiler/cpu-profiler.h',
+        '../../src/profiler/heap-profiler.cc',
+        '../../src/profiler/heap-profiler.h',
+        '../../src/profiler/heap-snapshot-generator-inl.h',
+        '../../src/profiler/heap-snapshot-generator.cc',
+        '../../src/profiler/heap-snapshot-generator.h',
+        '../../src/profiler/profile-generator-inl.h',
+        '../../src/profiler/profile-generator.cc',
+        '../../src/profiler/profile-generator.h',
+        '../../src/profiler/sampler.cc',
+        '../../src/profiler/sampler.h',
+        '../../src/profiler/unbound-queue-inl.h',
+        '../../src/profiler/unbound-queue.h',
         '../../src/property-details.h',
         '../../src/property.cc',
         '../../src/property.h',
@@ -897,6 +926,7 @@
         '../../src/runtime/runtime-generator.cc',
         '../../src/runtime/runtime-i18n.cc',
         '../../src/runtime/runtime-internal.cc',
+        '../../src/runtime/runtime-interpreter.cc',
         '../../src/runtime/runtime-json.cc',
         '../../src/runtime/runtime-literals.cc',
         '../../src/runtime/runtime-liveedit.cc',
@@ -904,6 +934,7 @@
         '../../src/runtime/runtime-numbers.cc',
         '../../src/runtime/runtime-object.cc',
         '../../src/runtime/runtime-observe.cc',
+        '../../src/runtime/runtime-operators.cc',
         '../../src/runtime/runtime-proxy.cc',
         '../../src/runtime/runtime-regexp.cc',
         '../../src/runtime/runtime-scopes.cc',
@@ -918,8 +949,6 @@
         '../../src/runtime/runtime.h',
         '../../src/safepoint-table.cc',
         '../../src/safepoint-table.h',
-        '../../src/sampler.cc',
-        '../../src/sampler.h',
         '../../src/scanner-character-streams.cc',
         '../../src/scanner-character-streams.h',
         '../../src/scanner.cc',
@@ -967,13 +996,17 @@
         '../../src/types-inl.h',
         '../../src/types.cc',
         '../../src/types.h',
+        '../../src/typing-asm.cc',
+        '../../src/typing-asm.h',
+        '../../src/typing-reset.cc',
+        '../../src/typing-reset.h',
         '../../src/typing.cc',
         '../../src/typing.h',
-        '../../src/unbound-queue-inl.h',
-        '../../src/unbound-queue.h',
         '../../src/unicode-inl.h',
         '../../src/unicode.cc',
         '../../src/unicode.h',
+        '../../src/unicode-cache-inl.h',
+        '../../src/unicode-cache.h',
         '../../src/unicode-decoder.cc',
         '../../src/unicode-decoder.h',
         '../../src/unique.h',
@@ -991,6 +1024,7 @@
         '../../src/version.h',
         '../../src/vm-state-inl.h',
         '../../src/vm-state.h',
+        '../../src/zone-type-cache.h',
         '../../src/zone.cc',
         '../../src/zone.h',
         '../../src/zone-allocator.h',
@@ -1221,7 +1255,7 @@
             '../../src/regexp/mips/regexp-macro-assembler-mips.h',
           ],
         }],
-        ['v8_target_arch=="mips64el"', {
+        ['v8_target_arch=="mips64" or v8_target_arch=="mips64el"', {
           'sources': [  ### gcmole(arch:mips64el) ###
             '../../src/mips64/assembler-mips64.cc',
             '../../src/mips64/assembler-mips64.h',
@@ -1714,6 +1748,7 @@
               '<(SHARED_INTERMEDIATE_DIR)/libraries-code-stub.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', {
@@ -1820,7 +1855,6 @@
           '../../src/harmony-regexp.js',
           '../../src/harmony-reflect.js',
           '../../src/harmony-spread.js',
-          '../../src/harmony-object.js',
           '../../src/harmony-object-observe.js',
           '../../src/harmony-sharedarraybuffer.js',
           '../../src/harmony-simd.js',
@@ -1834,6 +1868,7 @@
         'libraries_code_stub_bin_file': '<(SHARED_INTERMEDIATE_DIR)/libraries-code-stub.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',
       },
       'actions': [
         {
@@ -1843,9 +1878,7 @@
             '<@(library_files)',
             '<@(i18n_library_files)'
           ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/libraries.cc',
-          ],
+          'outputs': ['<(SHARED_INTERMEDIATE_DIR)/libraries.cc'],
           'action': [
             'python',
             '../../tools/js2c.py',
@@ -1854,13 +1887,24 @@
             '<@(library_files)',
             '<@(i18n_library_files)'
           ],
-          'conditions': [
-            [ 'v8_use_external_startup_data==1', {
-              'outputs': ['<@(libraries_bin_file)'],
-              'action': [
-                '--startup_blob', '<@(libraries_bin_file)',
-              ],
-            }],
+        },
+        {
+          'action_name': 'js2c_bin',
+          'inputs': [
+            '../../tools/js2c.py',
+            '<@(library_files)',
+            '<@(i18n_library_files)'
+          ],
+          'outputs': ['<@(libraries_bin_file)'],
+          'action': [
+            'python',
+            '../../tools/js2c.py',
+            '<(SHARED_INTERMEDIATE_DIR)/libraries.cc',
+            'CORE',
+            '<@(library_files)',
+            '<@(i18n_library_files)',
+            '--startup_blob', '<@(libraries_bin_file)',
+            '--nojs',
           ],
         },
         {
@@ -1869,9 +1913,7 @@
             '../../tools/js2c.py',
             '<@(experimental_library_files)',
           ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc',
-          ],
+          'outputs': ['<(SHARED_INTERMEDIATE_DIR)/experimental-libraries.cc'],
           'action': [
             'python',
             '../../tools/js2c.py',
@@ -1879,13 +1921,22 @@
             'EXPERIMENTAL',
             '<@(experimental_library_files)'
           ],
-          'conditions': [
-            [ 'v8_use_external_startup_data==1', {
-              'outputs': ['<@(libraries_experimental_bin_file)'],
-              'action': [
-                '--startup_blob', '<@(libraries_experimental_bin_file)'
-              ],
-            }],
+        },
+        {
+          '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',
           ],
         },
         {
@@ -1894,9 +1945,7 @@
             '../../tools/js2c.py',
             '<@(code_stub_library_files)',
           ],
-          'outputs': [
-            '<(SHARED_INTERMEDIATE_DIR)/code-stub-libraries.cc',
-          ],
+          'outputs': ['<(SHARED_INTERMEDIATE_DIR)/code-stub-libraries.cc'],
           'action': [
             'python',
             '../../tools/js2c.py',
@@ -1904,13 +1953,22 @@
             'CODE_STUB',
             '<@(code_stub_library_files)'
           ],
-          'conditions': [
-            [ 'v8_use_external_startup_data==1', {
-              'outputs': ['<@(libraries_code_stub_bin_file)'],
-              'action': [
-                '--startup_blob', '<@(libraries_code_stub_bin_file)'
-              ],
-            }],
+        },
+        {
+          'action_name': 'js2c_code_stubs_bin',
+          'inputs': [
+            '../../tools/js2c.py',
+            '<@(code_stub_library_files)',
+          ],
+          'outputs': ['<@(libraries_code_stub_bin_file)'],
+          'action': [
+            'python',
+            '../../tools/js2c.py',
+            '<(SHARED_INTERMEDIATE_DIR)/code-stub-libraries.cc',
+            'CODE_STUB',
+            '<@(code_stub_library_files)',
+            '--startup_blob', '<@(libraries_code_stub_bin_file)',
+            '--nojs',
           ],
         },
         {
@@ -1919,23 +1977,64 @@
             '../../tools/js2c.py',
             '<@(v8_extra_library_files)',
           ],
-          'outputs': [
+          'outputs': ['<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc'],
+          'action': [
+            'python',
+            '../../tools/js2c.py',
             '<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc',
+            'EXTRAS',
+            '<@(v8_extra_library_files)',
           ],
+        },
+        {
+          'action_name': 'js2c_extras_bin',
+          'inputs': [
+            '../../tools/js2c.py',
+            '<@(v8_extra_library_files)',
+          ],
+          'outputs': ['<@(libraries_extras_bin_file)'],
           'action': [
             'python',
             '../../tools/js2c.py',
             '<(SHARED_INTERMEDIATE_DIR)/extras-libraries.cc',
             'EXTRAS',
             '<@(v8_extra_library_files)',
+            '--startup_blob', '<@(libraries_extras_bin_file)',
+            '--nojs',
           ],
-          'conditions': [
-            [ 'v8_use_external_startup_data==1', {
-              'outputs': ['<@(libraries_extras_bin_file)'],
-              'action': [
-                '--startup_blob', '<@(libraries_extras_bin_file)',
-              ],
-            }],
+        },
+        {
+          'action_name': 'js2c_experimental_extras',
+          'inputs': [
+            '../../tools/js2c.py',
+            '<@(v8_experimental_extra_library_files)',
+          ],
+          'outputs': [
+            '<(SHARED_INTERMEDIATE_DIR)/experimental-extras-libraries.cc',
+          ],
+          'action': [
+            'python',
+            '../../tools/js2c.py',
+            '<(SHARED_INTERMEDIATE_DIR)/experimental-extras-libraries.cc',
+            'EXPERIMENTAL_EXTRAS',
+            '<@(v8_experimental_extra_library_files)',
+          ],
+        },
+        {
+          'action_name': 'js2c_experimental_extras_bin',
+          'inputs': [
+            '../../tools/js2c.py',
+            '<@(v8_experimental_extra_library_files)',
+          ],
+          'outputs': ['<@(libraries_experimental_extras_bin_file)'],
+          'action': [
+            'python',
+            '../../tools/js2c.py',
+            '<(SHARED_INTERMEDIATE_DIR)/experimental-extras-libraries.cc',
+            'EXPERIMENTAL_EXTRAS',
+            '<@(v8_experimental_extra_library_files)',
+            '--startup_blob', '<@(libraries_experimental_extras_bin_file)',
+            '--nojs',
           ],
         },
       ],
diff --git a/deps/v8/tools/js2c.py b/deps/v8/tools/js2c.py
index c280537379..bd50692bb8 100755
--- a/deps/v8/tools/js2c.py
+++ b/deps/v8/tools/js2c.py
@@ -31,10 +31,9 @@
 # char arrays. It is used for embedded JavaScript code in the V8
 # library.
 
-import os, re, sys, string
+import os, re
 import optparse
 import jsmin
-import bz2
 import textwrap
 
 
@@ -108,6 +107,9 @@ def ExpandMacroDefinition(lines, pos, name_pattern, macro, expander):
     mapping = { }
     def add_arg(str):
       # Remember to expand recursively in the arguments
+      if arg_index[0] >= len(macro.args):
+        lineno = lines.count(os.linesep, 0, start) + 1
+        raise Error('line %s: Too many arguments for macro "%s"' % (lineno, name_pattern.pattern))
       replacement = expander(str.strip())
       mapping[macro.args[arg_index[0]]] = replacement
       arg_index[0] += 1
@@ -583,7 +585,8 @@ def main():
                     help="file to write the startup blob to.")
   parser.add_option("--js",
                     help="writes a JS file output instead of a C file",
-                    action="store_true")
+                    action="store_true", default=False, dest='js')
+  parser.add_option("--nojs", action="store_false", default=False, dest='js')
   parser.set_usage("""js2c out.cc type sources.js ...
         out.cc: C code to be generated.
         type: type parameter for NativesCollection template.
diff --git a/deps/v8/tools/presubmit.py b/deps/v8/tools/presubmit.py
index a835e61792..338c708548 100755
--- a/deps/v8/tools/presubmit.py
+++ b/deps/v8/tools/presubmit.py
@@ -45,62 +45,25 @@ import subprocess
 import multiprocessing
 from subprocess import PIPE
 
-# Disabled LINT rules and reason.
+# Special LINT rules diverging from default and reason.
+# build/header_guard: Our guards have the form "V8_FOO_H_", not "SRC_FOO_H_".
 # build/include_what_you_use: Started giving false positives for variables
-#  named "string" and "map" assuming that you needed to include STL headers.
-
-ENABLED_LINT_RULES = """
-build/class
-build/deprecated
-build/endif_comment
-build/forward_decl
-build/include_alpha
-build/include_order
-build/printf_format
-build/storage_class
-legal/copyright
-readability/boost
-readability/braces
-readability/casting
-readability/constructors
-readability/fn_size
-readability/function
-readability/multiline_comment
-readability/multiline_string
-readability/streams
-readability/todo
-readability/utf8
-runtime/arrays
-runtime/casting
-runtime/deprecated_fn
-runtime/explicit
-runtime/int
-runtime/memset
-runtime/mutex
-runtime/nonconf
-runtime/printf
-runtime/printf_format
-runtime/rtti
-runtime/sizeof
-runtime/string
-runtime/virtual
-runtime/vlog
-whitespace/blank_line
-whitespace/braces
-whitespace/comma
-whitespace/comments
-whitespace/ending_newline
-whitespace/indent
-whitespace/labels
-whitespace/line_length
-whitespace/newline
-whitespace/operators
-whitespace/parens
-whitespace/tab
-whitespace/todo
-""".split()
-
+#   named "string" and "map" assuming that you needed to include STL headers.
 # TODO(bmeurer): Fix and re-enable readability/check
+# TODO(mstarzinger): Fix and re-enable readability/namespace
+
+LINT_RULES = """
+-build/header_guard
++build/include_alpha
+-build/include_what_you_use
+-build/namespaces
+-readability/check
+-readability/inheritance
+-readability/namespace
+-readability/nolint
++readability/streams
+-runtime/references
+""".split()
 
 LINT_OUTPUT_PATTERN = re.compile(r'^.+[:(]\d+[:)]|^Done processing')
 FLAGS_LINE = re.compile("//\s*Flags:.*--([A-z0-9-])+_[A-z0-9].*\n")
@@ -256,15 +219,15 @@ class CppLintProcessor(SourceFileProcessor):
       print 'No changes in files detected. Skipping cpplint check.'
       return True
 
-    filt = '-,' + ",".join(['+' + n for n in ENABLED_LINT_RULES])
-    command = [sys.executable, 'cpplint.py', '--filter', filt]
+    filters = ",".join([n for n in LINT_RULES])
+    command = [sys.executable, 'cpplint.py', '--filter', filters]
     cpplint = self.GetCpplintScript(join(path, "tools"))
     if cpplint is None:
       print('Could not find cpplint.py. Make sure '
             'depot_tools is installed and in the path.')
       sys.exit(1)
 
-    command = [sys.executable, cpplint, '--filter', filt]
+    command = [sys.executable, cpplint, '--filter', filters]
 
     commands = join([command + [file] for file in files])
     count = multiprocessing.cpu_count()
@@ -438,12 +401,6 @@ class SourceProcessor(SourceFileProcessor):
     return success
 
 
-def CheckRuntimeVsNativesNameClashes(workspace):
-  code = subprocess.call(
-      [sys.executable, join(workspace, "tools", "check-name-clashes.py")])
-  return code == 0
-
-
 def CheckExternalReferenceRegistration(workspace):
   code = subprocess.call(
       [sys.executable, join(workspace, "tools", "external-reference-check.py")])
@@ -495,7 +452,6 @@ def Main():
   print "Running copyright header, trailing whitespaces and " \
         "two empty lines between declarations check..."
   success = SourceProcessor().Run(workspace) and success
-  success = CheckRuntimeVsNativesNameClashes(workspace) and success
   success = CheckExternalReferenceRegistration(workspace) and success
   if success:
     return 0
diff --git a/deps/v8/tools/release/merge_to_branch.py b/deps/v8/tools/release/merge_to_branch.py
index 5fe3ba4251..378a9fd135 100755
--- a/deps/v8/tools/release/merge_to_branch.py
+++ b/deps/v8/tools/release/merge_to_branch.py
@@ -104,9 +104,8 @@ class CreateCommitMessage(Step):
 
   def RunStep(self):
 
-    # Stringify: [123, 234] -> "r123, r234"
-    self["revision_list"] = ", ".join(map(lambda s: "r%s" % s,
-                                      self["full_revision_list"]))
+    # Stringify: ["abcde", "12345"] -> "abcde, 12345"
+    self["revision_list"] = ", ".join(self["full_revision_list"])
 
     if not self["revision_list"]:  # pragma: no cover
       self.Die("Revision list is empty.")
diff --git a/deps/v8/tools/run-deopt-fuzzer.py b/deps/v8/tools/run-deopt-fuzzer.py
index 7fbf402d95..89474d8162 100755
--- a/deps/v8/tools/run-deopt-fuzzer.py
+++ b/deps/v8/tools/run-deopt-fuzzer.py
@@ -398,6 +398,7 @@ def Execute(arch, mode, args, options, suites, workspace):
     "msan": False,
     "dcheck_always_on": options.dcheck_always_on,
     "novfp3": False,
+    "predictable": False,
     "byteorder": sys.byteorder,
   }
   all_tests = []
diff --git a/deps/v8/tools/run_perf.py b/deps/v8/tools/run_perf.py
index 31331686fa..a8cc3fab71 100755
--- a/deps/v8/tools/run_perf.py
+++ b/deps/v8/tools/run_perf.py
@@ -102,6 +102,7 @@ import math
 import optparse
 import os
 import re
+import subprocess
 import sys
 
 from testrunner.local import commands
@@ -120,6 +121,7 @@ SUPPORTED_ARCHS = ["arm",
 GENERIC_RESULTS_RE = re.compile(r"^RESULT ([^:]+): ([^=]+)= ([^ ]+) ([^ ]*)$")
 RESULT_STDDEV_RE = re.compile(r"^\{([^\}]+)\}$")
 RESULT_LIST_RE = re.compile(r"^\[([^\]]+)\]$")
+TOOLS_BASE = os.path.abspath(os.path.dirname(__file__))
 
 
 def LoadAndroidBuildTools(path):  # pragma: no cover
@@ -457,7 +459,10 @@ class RunnableConfig(GraphConfig):
 
   def GetCommand(self, shell_dir, extra_flags=None):
     # TODO(machenbach): This requires +.exe if run on windows.
+    extra_flags = extra_flags or []
     cmd = [os.path.join(shell_dir, self.binary)]
+    if self.binary != 'd8' and '--prof' in extra_flags:
+      print "Profiler supported only on a benchmark run with d8"
     return cmd + self.GetCommandFlags(extra_flags=extra_flags)
 
   def Run(self, runner, trybot):
@@ -640,6 +645,13 @@ class DesktopPlatform(Platform):
       print output.stderr
     if output.timed_out:
       print ">>> Test timed out after %ss." % runnable.timeout
+    if '--prof' in self.extra_flags:
+      os_prefix = {"linux": "linux", "macos": "mac"}.get(utils.GuessOS())
+      if os_prefix:
+        tick_tools = os.path.join(TOOLS_BASE, "%s-tick-processor" % os_prefix)
+        subprocess.check_call(tick_tools + " --only-summary", shell=True)
+      else:  # pragma: no cover
+        print "Profiler option currently supported on Linux and Mac OS."
     return output.stdout
 
 
diff --git a/deps/v8/tools/testrunner/local/commands.py b/deps/v8/tools/testrunner/local/commands.py
index 6aac3ffad5..a4df32c52a 100644
--- a/deps/v8/tools/testrunner/local/commands.py
+++ b/deps/v8/tools/testrunner/local/commands.py
@@ -61,12 +61,18 @@ def RunProcess(verbose, timeout, args, **rest):
     error_mode = SEM_NOGPFAULTERRORBOX
     prev_error_mode = Win32SetErrorMode(error_mode)
     Win32SetErrorMode(error_mode | prev_error_mode)
-  process = subprocess.Popen(
-    args=popen_args,
-    stdout=subprocess.PIPE,
-    stderr=subprocess.PIPE,
-    **rest
-  )
+
+  try:
+    process = subprocess.Popen(
+      args=popen_args,
+      stdout=subprocess.PIPE,
+      stderr=subprocess.PIPE,
+      **rest
+    )
+  except Exception as e:
+    sys.stderr.write("Error executing: %s\n" % popen_args)
+    raise e
+
   if (utils.IsWindows() and prev_error_mode != SEM_INVALID_VALUE):
     Win32SetErrorMode(prev_error_mode)
 
diff --git a/deps/v8/tools/testrunner/local/progress.py b/deps/v8/tools/testrunner/local/progress.py
index 60ec635262..85d93285eb 100644
--- a/deps/v8/tools/testrunner/local/progress.py
+++ b/deps/v8/tools/testrunner/local/progress.py
@@ -375,6 +375,7 @@ class JsonTestProgressIndicator(ProgressIndicator):
       # TODO(machenbach): This stores only the global random seed from the
       # context and not possible overrides when using random-seed stress.
       "random_seed": self.random_seed,
+      "target_name": test.suite.shell(),
       "variant": test.variant,
     })
 
diff --git a/deps/v8/tools/testrunner/local/statusfile.py b/deps/v8/tools/testrunner/local/statusfile.py
index 62c959be29..bfa53c5348 100644
--- a/deps/v8/tools/testrunner/local/statusfile.py
+++ b/deps/v8/tools/testrunner/local/statusfile.py
@@ -56,7 +56,7 @@ DEFS = {FAIL_OK: [FAIL, OKAY],
 VARIABLES = {ALWAYS: True}
 for var in ["debug", "release", "big", "little",
             "android_arm", "android_arm64", "android_ia32", "android_x87",
-            "android_x64", "arm", "arm64", "ia32", "mips", "mipsel",
+            "android_x64", "arm", "arm64", "ia32", "mips", "mipsel", "mips64",
             "mips64el", "x64", "x87", "nacl_ia32", "nacl_x64", "ppc", "ppc64",
             "macos", "windows", "linux", "aix"]:
   VARIABLES[var] = var
diff --git a/deps/v8/tools/testrunner/local/testsuite.py b/deps/v8/tools/testrunner/local/testsuite.py
index c8e43521e7..e0fff0d11a 100644
--- a/deps/v8/tools/testrunner/local/testsuite.py
+++ b/deps/v8/tools/testrunner/local/testsuite.py
@@ -226,7 +226,7 @@ class TestSuite(object):
         continue
       if len(argpath) == 1 or (len(argpath) == 2 and argpath[1] == '*'):
         return  # Don't filter, run all tests in this suite.
-      path = os.path.sep.join(argpath[1:])
+      path = '/'.join(argpath[1:])
       if path[-1] == '*':
         path = path[:-1]
         globs.append(path)
diff --git a/deps/v8/tools/tickprocessor-driver.js b/deps/v8/tools/tickprocessor-driver.js
index 946f543219..dc8a87d9ec 100644
--- a/deps/v8/tools/tickprocessor-driver.js
+++ b/deps/v8/tools/tickprocessor-driver.js
@@ -77,6 +77,7 @@ var tickProcessor = new TickProcessor(
   params.range,
   sourceMap,
   params.timedRange,
-  params.pairwiseTimedRange);
+  params.pairwiseTimedRange,
+  params.onlySummary);
 tickProcessor.processLogFile(params.logFileName);
 tickProcessor.printStatistics();
diff --git a/deps/v8/tools/tickprocessor.js b/deps/v8/tools/tickprocessor.js
index d857573855..600d2eeb7b 100644
--- a/deps/v8/tools/tickprocessor.js
+++ b/deps/v8/tools/tickprocessor.js
@@ -156,7 +156,8 @@ function TickProcessor(
     range,
     sourceMap,
     timedRange,
-    pairwiseTimedRange) {
+    pairwiseTimedRange,
+    onlySummary) {
   LogReader.call(this, {
       'shared-library': { parsers: [null, parseInt, parseInt],
           processor: this.processSharedLibrary },
@@ -247,6 +248,7 @@ function TickProcessor(
 
   this.generation_ = 1;
   this.currentProducerProfile_ = null;
+  this.onlySummary_ = onlySummary;
 };
 inherits(TickProcessor, LogReader);
 
@@ -456,29 +458,30 @@ TickProcessor.prototype.printStatistics = function() {
   if (this.ignoreUnknown_) {
     totalTicks -= this.ticks_.unaccounted;
   }
+  var printAllTicks = !this.onlySummary_;
 
   // Count library ticks
   var flatViewNodes = flatView.head.children;
   var self = this;
 
   var libraryTicks = 0;
-  this.printHeader('Shared libraries');
+  if(printAllTicks) this.printHeader('Shared libraries');
   this.printEntries(flatViewNodes, totalTicks, null,
       function(name) { return self.isSharedLibrary(name); },
-      function(rec) { libraryTicks += rec.selfTime; });
+      function(rec) { libraryTicks += rec.selfTime; }, printAllTicks);
   var nonLibraryTicks = totalTicks - libraryTicks;
 
   var jsTicks = 0;
-  this.printHeader('JavaScript');
+  if(printAllTicks) this.printHeader('JavaScript');
   this.printEntries(flatViewNodes, totalTicks, nonLibraryTicks,
       function(name) { return self.isJsCode(name); },
-      function(rec) { jsTicks += rec.selfTime; });
+      function(rec) { jsTicks += rec.selfTime; }, printAllTicks);
 
   var cppTicks = 0;
-  this.printHeader('C++');
+  if(printAllTicks) this.printHeader('C++');
   this.printEntries(flatViewNodes, totalTicks, nonLibraryTicks,
       function(name) { return self.isCppCode(name); },
-      function(rec) { cppTicks += rec.selfTime; });
+      function(rec) { cppTicks += rec.selfTime; }, printAllTicks);
 
   this.printHeader('Summary');
   this.printLine('JavaScript', jsTicks, totalTicks, nonLibraryTicks);
@@ -490,25 +493,27 @@ TickProcessor.prototype.printStatistics = function() {
                    this.ticks_.total, null);
   }
 
-  print('\n [C++ entry points]:');
-  print('   ticks    cpp   total   name');
-  var c_entry_functions = this.profile_.getCEntryProfile();
-  var total_c_entry = c_entry_functions[0].ticks;
-  for (var i = 1; i < c_entry_functions.length; i++) {
-    c = c_entry_functions[i];
-    this.printLine(c.name, c.ticks, total_c_entry, totalTicks);
-  }
+  if(printAllTicks) {
+    print('\n [C++ entry points]:');
+    print('   ticks    cpp   total   name');
+    var c_entry_functions = this.profile_.getCEntryProfile();
+    var total_c_entry = c_entry_functions[0].ticks;
+    for (var i = 1; i < c_entry_functions.length; i++) {
+      c = c_entry_functions[i];
+      this.printLine(c.name, c.ticks, total_c_entry, totalTicks);
+    }
 
-  this.printHeavyProfHeader();
-  var heavyProfile = this.profile_.getBottomUpProfile();
-  var heavyView = this.viewBuilder_.buildView(heavyProfile);
-  // To show the same percentages as in the flat profile.
-  heavyView.head.totalTime = totalTicks;
-  // Sort by total time, desc, then by name, desc.
-  heavyView.sort(function(rec1, rec2) {
-      return rec2.totalTime - rec1.totalTime ||
-          (rec2.internalFuncName < rec1.internalFuncName ? -1 : 1); });
-  this.printHeavyProfile(heavyView.head.children);
+    this.printHeavyProfHeader();
+    var heavyProfile = this.profile_.getBottomUpProfile();
+    var heavyView = this.viewBuilder_.buildView(heavyProfile);
+    // To show the same percentages as in the flat profile.
+    heavyView.head.totalTime = totalTicks;
+    // Sort by total time, desc, then by name, desc.
+    heavyView.sort(function(rec1, rec2) {
+        return rec2.totalTime - rec1.totalTime ||
+            (rec2.internalFuncName < rec1.internalFuncName ? -1 : 1); });
+    this.printHeavyProfile(heavyView.head.children);
+  }
 };
 
 
@@ -600,13 +605,15 @@ TickProcessor.prototype.formatFunctionName = function(funcName) {
 };
 
 TickProcessor.prototype.printEntries = function(
-    profile, totalTicks, nonLibTicks, filterP, callback) {
+    profile, totalTicks, nonLibTicks, filterP, callback, printAllTicks) {
   var that = this;
   this.processProfile(profile, filterP, function (rec) {
     if (rec.selfTime == 0) return;
     callback(rec);
     var funcName = that.formatFunctionName(rec.internalFuncName);
-    that.printLine(funcName, rec.selfTime, totalTicks, nonLibTicks);
+    if(printAllTicks) {
+      that.printLine(funcName, rec.selfTime, totalTicks, nonLibTicks);
+    }
   });
 };
 
@@ -884,7 +891,9 @@ function ArgumentsProcessor(args) {
     '--timed-range': ['timedRange', true,
         'Ignore ticks before first and after last Date.now() call'],
     '--pairwise-timed-range': ['pairwiseTimedRange', true,
-        'Ignore ticks outside pairs of Date.now() calls']
+        'Ignore ticks outside pairs of Date.now() calls'],
+    '--only-summary': ['onlySummary', true,
+        'Print only tick summary, exclude other information']
   };
   this.argsDispatch_['--js'] = this.argsDispatch_['-j'];
   this.argsDispatch_['--gc'] = this.argsDispatch_['-g'];
@@ -908,7 +917,8 @@ ArgumentsProcessor.DEFAULTS = {
   range: 'auto,auto',
   distortion: 0,
   timedRange: false,
-  pairwiseTimedRange: false
+  pairwiseTimedRange: false,
+  onlySummary: false
 };
 
 
diff --git a/deps/v8/tools/try_perf.py b/deps/v8/tools/try_perf.py
index 5969ff0032..14b2329f74 100755
--- a/deps/v8/tools/try_perf.py
+++ b/deps/v8/tools/try_perf.py
@@ -4,13 +4,10 @@
 # found in the LICENSE file.
 
 import argparse
-import find_depot_tools
+import os
+import subprocess
 import sys
 
-find_depot_tools.add_depot_tools_to_path()
-
-from git_cl import Changelist
-
 BOTS = {
   '--arm32': 'v8_arm32_perf_try',
   '--linux32': 'v8_linux32_perf_try',
@@ -23,13 +20,19 @@ BOTS = {
 }
 
 DEFAULT_BOTS = [
+  'v8_arm32_perf_try',
   'v8_linux32_perf_try',
   'v8_linux64_haswell_perf_try',
+  'v8_nexus10_perf_try',
 ]
 
+V8_BASE = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
+
 def main():
   parser = argparse.ArgumentParser(description='')
-  parser.add_argument("benchmarks", nargs="+", help="The benchmarks to run.")
+  parser.add_argument('benchmarks', nargs='+', help='The benchmarks to run.')
+  parser.add_argument('--extra-flags', default='',
+                      help='Extra flags to be passed to the executable.')
   for option in sorted(BOTS):
     parser.add_argument(
         option, dest='bots', action='append_const', const=BOTS[option],
@@ -39,31 +42,25 @@ def main():
     print 'No trybots specified. Using default %s.' % ','.join(DEFAULT_BOTS)
     options.bots = DEFAULT_BOTS
 
-  cl = Changelist()
-  if not cl.GetIssue():
-    print 'Need to upload first'
+  if not options.benchmarks:
+    print 'Please specify the benchmarks to run as arguments.'
     return 1
 
-  props = cl.GetIssueProperties()
-  if props.get('closed'):
-    print 'Cannot send tryjobs for a closed CL'
-    return 1
+  assert '"' not in options.extra_flags and '\'' not in options.extra_flags, (
+      'Invalid flag specification.')
 
-  if props.get('private'):
-    print 'Cannot use trybots with private issue'
-    return 1
+  # Ensure depot_tools are updated.
+  subprocess.check_output(
+      'gclient', shell=True, stderr=subprocess.STDOUT, cwd=V8_BASE)
 
-  if not options.benchmarks:
-    print 'Please specify the benchmarks to run as arguments.'
-    return 1
+  cmd = ['git cl try -m internal.client.v8']
+  cmd += ['-b %s' % bot for bot in options.bots]
+  benchmarks = ['"%s"' % benchmark for benchmark in options.benchmarks]
+  cmd += ['-p \'testfilter=[%s]\'' % ','.join(benchmarks)]
+  if options.extra_flags:
+    cmd += ['-p \'extra_flags="%s"\'' % options.extra_flags]
+  subprocess.check_call(' '.join(cmd), shell=True, cwd=V8_BASE)
 
-  masters = {
-    'internal.client.v8': dict((b, options.benchmarks) for b in options.bots),
-  }
-  cl.RpcServer().trigger_distributed_try_jobs(
-      cl.GetIssue(), cl.GetMostRecentPatchset(), cl.GetBranch(),
-      False, None, masters)
-  return 0
 
-if __name__ == "__main__":  # pragma: no cover
+if __name__ == '__main__':  # pragma: no cover
   sys.exit(main())
diff --git a/deps/v8/tools/unittests/run_perf_test.py b/deps/v8/tools/unittests/run_perf_test.py
index f3e5aff49f..1a4d73857a 100644
--- a/deps/v8/tools/unittests/run_perf_test.py
+++ b/deps/v8/tools/unittests/run_perf_test.py
@@ -10,7 +10,9 @@ from mock import DEFAULT
 from mock import MagicMock
 import os
 from os import path, sys
+import platform
 import shutil
+import subprocess
 import tempfile
 import unittest
 
@@ -129,6 +131,9 @@ class PerfTest(unittest.TestCase):
       self.assertEquals(dirs.pop(), args[0])
     os.chdir = MagicMock(side_effect=chdir)
 
+    subprocess.check_call = MagicMock()
+    platform.system = MagicMock(return_value='Linux')
+
   def _CallMain(self, *args):
     self._test_output = path.join(TEST_WORKSPACE, "results.json")
     all_args=[
@@ -448,6 +453,19 @@ class PerfTest(unittest.TestCase):
         (path.join("out-no-patch", "x64.release", "d7"), "--flag", "run.js"),
     )
 
+  def testWrongBinaryWithProf(self):
+    test_input = dict(V8_JSON)
+    self._WriteTestInput(test_input)
+    self._MockCommand(["."], ["x\nRichards: 1.234\nDeltaBlue: 10657567\ny\n"])
+    self.assertEquals(0, self._CallMain("--extra-flags=--prof"))
+    self._VerifyResults("test", "score", [
+      {"name": "Richards", "results": ["1.234"], "stddev": ""},
+      {"name": "DeltaBlue", "results": ["10657567.0"], "stddev": ""},
+    ])
+    self._VerifyErrors([])
+    self._VerifyMock(path.join("out", "x64.release", "d7"),
+                     "--flag", "--prof", "run.js")
+
   def testUnzip(self):
     def Gen():
       for i in [1, 2, 3]:
diff --git a/deps/v8/tools/whitespace.txt b/deps/v8/tools/whitespace.txt
index d1395f5d91..5a830c0e12 100644
--- a/deps/v8/tools/whitespace.txt
+++ b/deps/v8/tools/whitespace.txt
@@ -5,4 +5,4 @@ Try to write something funny. And please don't add trailing whitespace.
 A Smi balks into a war and says:
 "I'm so deoptimized today!"
 The doubles heard this and started to unbox.
-The Smi looked at them when a crazy v8-autoroll account showed up..
+The Smi looked at them when a crazy v8-autoroll account showed up.