v8: Upgrade 3.26.33 with 14 patches

V8 3.26.31 has received 14 patches since the upgrade to 3.26.33. Since
3.26.33 is technically a tag on the 3.27 branch, reverting back to
3.26.31 would remove now default functionality like WeakMaps. Because of
that the patches have simply been cherry-picked and squashed.

Here is a summary of all patches:

* Fix index register assignment in LoadFieldByIndex for arm, arm64, and
  mips.
* Fix invalid attributes when generalizing because of incompatible map
  change.
* Skip write barriers when updating the weak hash table.
* MIPS: Avoid HeapObject check in HStoreNamedField.
* Do GC if CodeRange fails to allocate a block.
* Array.concat: properly go to dictionary mode when required.
* Keep CodeRange::current_allocation_block_index_ in range.
* Grow heap slower if GC freed many global handles.
* Do not eliminate bounds checks for "<const> - x".
* Add missing map check to optimized f.apply(...).
* In GrowMode, force the value to the right representation to avoid
  deopts between storing the length and storing the value.
* Reduce max executable size limit.
* Fix invalid condition in check elimination effects.
* Fix off-by-one error in Array.concat slow mode check.

For more information see: https://github.com/v8/v8/commits/3.26

Reviewed-By: Fedor Indutny <fedor@indutny.com>

1 files changed, 3 insertions, 42 deletions

diff --git a/deps/v8/tools/gen-postmortem-metadata.py b/deps/v8/tools/gen-postmortem-metadata.py
index 2ce085393e..fff2e34b7c 100644
--- a/deps/v8/tools/gen-postmortem-metadata.py
+++ b/deps/v8/tools/gen-postmortem-metadata.py
@@ -80,28 +80,14 @@ consts_misc = [
     { 'name': 'SmiShiftSize',           'value': 'kSmiShiftSize' },
     { 'name': 'PointerSizeLog2',        'value': 'kPointerSizeLog2' },
 
-    { 'name': 'OddballFalse',           'value': 'Oddball::kFalse' },
-    { 'name': 'OddballTrue',            'value': 'Oddball::kTrue' },
-    { 'name': 'OddballTheHole',         'value': 'Oddball::kTheHole' },
-    { 'name': 'OddballNull',            'value': 'Oddball::kNull' },
-    { 'name': 'OddballArgumentMarker',  'value': 'Oddball::kArgumentMarker' },
-    { 'name': 'OddballUndefined',       'value': 'Oddball::kUndefined' },
-    { 'name': 'OddballUninitialized',   'value': 'Oddball::kUninitialized' },
-    { 'name': 'OddballOther',           'value': 'Oddball::kOther' },
-    { 'name': 'OddballException',       'value': 'Oddball::kException' },
-
     { 'name': 'prop_idx_first',
         'value': 'DescriptorArray::kFirstIndex' },
     { 'name': 'prop_type_field',
         'value': 'FIELD' },
     { 'name': 'prop_type_first_phantom',
-        'value': 'INTERCEPTOR' },
+        'value': 'TRANSITION' },
     { 'name': 'prop_type_mask',
         'value': 'PropertyDetails::TypeField::kMask' },
-    { 'name': 'prop_index_mask',
-        'value': 'PropertyDetails::FieldIndexField::kMask' },
-    { 'name': 'prop_index_shift',
-        'value': 'PropertyDetails::FieldIndexField::kShift' },
 
     { 'name': 'prop_desc_key',
         'value': 'DescriptorArray::kDescriptorKey' },
@@ -112,20 +98,6 @@ consts_misc = [
     { 'name': 'prop_desc_size',
         'value': 'DescriptorArray::kDescriptorSize' },
 
-    { 'name': 'bit_field2_elements_kind_mask',
-       'value': 'Map::kElementsKindMask' },
-    { 'name': 'bit_field2_elements_kind_shift',
-       'value': 'Map::kElementsKindShift' },
-    { 'name': 'bit_field3_dictionary_map_shift',
-        'value': 'Map::DictionaryMap::kShift' },
-
-    { 'name': 'elements_fast_holey_elements',
-        'value': 'FAST_HOLEY_ELEMENTS' },
-    { 'name': 'elements_fast_elements',
-        'value': 'FAST_ELEMENTS' },
-    { 'name': 'elements_dictionary_elements',
-        'value': 'DICTIONARY_ELEMENTS' },
-
     { 'name': 'off_fp_context',
         'value': 'StandardFrameConstants::kContextOffset' },
     { 'name': 'off_fp_constant_pool',
@@ -148,16 +120,6 @@ extras_accessors = [
     'Map, instance_attributes, int, kInstanceAttributesOffset',
     'Map, inobject_properties, int, kInObjectPropertiesOffset',
     'Map, instance_size, int, kInstanceSizeOffset',
-    'Map, bit_field, char, kBitFieldOffset',
-    'Map, bit_field2, char, kBitField2Offset',
-    'Map, bit_field3, SMI, kBitField3Offset',
-    'Map, prototype, Object, kPrototypeOffset',
-    'NameDictionaryShape, prefix_size, int, kPrefixSize',
-    'NameDictionaryShape, entry_size, int, kEntrySize',
-    'SeededNumberDictionaryShape, prefix_size, int, kPrefixSize',
-    'UnseededNumberDictionaryShape, prefix_size, int, kPrefixSize',
-    'NumberDictionaryShape, entry_size, int, kEntrySize',
-    'Oddball, kind_offset, int, kKindOffset',
     'HeapNumber, value, double, kValueOffset',
     'ConsString, first, String, kFirstOffset',
     'ConsString, second, String, kSecondOffset',
@@ -399,7 +361,7 @@ def parse_field(call):
                     'value': '%s::%s' % (klass, offset)
                 });
 
-        assert(kind == 'SMI_ACCESSORS' or kind == 'ACCESSORS_TO_SMI');
+        assert(kind == 'SMI_ACCESSORS');
         klass = args[0];
         field = args[1];
         offset = args[2];
@@ -423,8 +385,7 @@ def load_fields():
         # may span multiple lines and may contain nested parentheses.  We also
         # call parse_field() to pick apart the invocation.
         #
-        prefixes = [ 'ACCESSORS', 'ACCESSORS_GCSAFE',
-                     'SMI_ACCESSORS', 'ACCESSORS_TO_SMI' ];
+        prefixes = [ 'ACCESSORS', 'ACCESSORS_GCSAFE', 'SMI_ACCESSORS' ];
         current = '';
         opens = 0;