deps: update V8 to 5.1.281.69

Pick up the latest branch-head for V8 5.1. This branch brings in
improved language support and performance improvements. For full
details: http://v8project.blogspot.com/2016/04/v8-release-51.html

* Picks up the latest branch head for 5.1 [1]
* Edit v8 gitignore to allow trace_event copy
* Update V8 DEP trace_event as per deps/v8/DEPS [2]

[1] https://chromium.googlesource.com/v8/v8.git/+/dc81244
[2] https://chromium.googlesource.com/chromium/src/base/trace_event/common/+/c8c8665

PR-URL: https://github.com/nodejs/node/pull/7016
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

1 files changed, 16 insertions, 35 deletions

diff --git a/deps/v8/src/contexts.h b/deps/v8/src/contexts.h
index 38ebf64ae1..90fb9a4278 100644
--- a/deps/v8/src/contexts.h
+++ b/deps/v8/src/contexts.h
@@ -79,7 +79,6 @@ enum BindingFlags {
 
 #define NATIVE_CONTEXT_INTRINSIC_FUNCTIONS(V)                             \
   V(IS_ARRAYLIKE, JSFunction, is_arraylike)                               \
-  V(CONCAT_ITERABLE_TO_ARRAY_INDEX, JSFunction, concat_iterable_to_array) \
   V(GET_TEMPLATE_CALL_SITE_INDEX, JSFunction, get_template_call_site)     \
   V(MAKE_RANGE_ERROR_INDEX, JSFunction, make_range_error)                 \
   V(MAKE_TYPE_ERROR_INDEX, JSFunction, make_type_error)                   \
@@ -94,7 +93,9 @@ enum BindingFlags {
   V(REFLECT_DELETE_PROPERTY_INDEX, JSFunction, reflect_delete_property)   \
   V(SPREAD_ARGUMENTS_INDEX, JSFunction, spread_arguments)                 \
   V(SPREAD_ITERABLE_INDEX, JSFunction, spread_iterable)                   \
-  V(ORDINARY_HAS_INSTANCE_INDEX, JSFunction, ordinary_has_instance)
+  V(ORDINARY_HAS_INSTANCE_INDEX, JSFunction, ordinary_has_instance)       \
+  V(MATH_FLOOR, JSFunction, math_floor)                                   \
+  V(MATH_SQRT, JSFunction, math_sqrt)
 
 #define NATIVE_CONTEXT_IMPORTED_FIELDS(V)                                     \
   V(ARRAY_CONCAT_INDEX, JSFunction, array_concat)                             \
@@ -116,6 +117,7 @@ enum BindingFlags {
   V(MAP_GET_METHOD_INDEX, JSFunction, map_get)                                \
   V(MAP_HAS_METHOD_INDEX, JSFunction, map_has)                                \
   V(MAP_SET_METHOD_INDEX, JSFunction, map_set)                                \
+  V(MATH_POW_METHOD_INDEX, JSFunction, math_pow)                              \
   V(MESSAGE_GET_COLUMN_NUMBER_INDEX, JSFunction, message_get_column_number)   \
   V(MESSAGE_GET_LINE_NUMBER_INDEX, JSFunction, message_get_line_number)       \
   V(MESSAGE_GET_SOURCE_LINE_INDEX, JSFunction, message_get_source_line)       \
@@ -184,7 +186,7 @@ enum BindingFlags {
   V(FLOAT32_ARRAY_FUN_INDEX, JSFunction, float32_array_fun)                    \
   V(FLOAT32X4_FUNCTION_INDEX, JSFunction, float32x4_function)                  \
   V(FLOAT64_ARRAY_FUN_INDEX, JSFunction, float64_array_fun)                    \
-  V(TEMPLATE_INSTANTIATIONS_CACHE_INDEX, ObjectHashTable,                      \
+  V(TEMPLATE_INSTANTIATIONS_CACHE_INDEX, UnseededNumberDictionary,             \
     template_instantiations_cache)                                             \
   V(FUNCTION_FUNCTION_INDEX, JSFunction, function_function)                    \
   V(GENERATOR_FUNCTION_FUNCTION_INDEX, JSFunction,                             \
@@ -211,21 +213,8 @@ enum BindingFlags {
     js_array_fast_double_elements_map_index)                                   \
   V(JS_ARRAY_FAST_HOLEY_DOUBLE_ELEMENTS_MAP_INDEX, Map,                        \
     js_array_fast_holey_double_elements_map_index)                             \
-  V(JS_ARRAY_FAST_SMI_ELEMENTS_STRONG_MAP_INDEX, Map,                          \
-    js_array_fast_smi_elements_strong_map_index)                               \
-  V(JS_ARRAY_FAST_HOLEY_SMI_ELEMENTS_STRONG_MAP_INDEX, Map,                    \
-    js_array_fast_holey_smi_elements_strong_map_index)                         \
-  V(JS_ARRAY_FAST_ELEMENTS_STRONG_MAP_INDEX, Map,                              \
-    js_array_fast_elements_strong_map_index)                                   \
-  V(JS_ARRAY_FAST_HOLEY_ELEMENTS_STRONG_MAP_INDEX, Map,                        \
-    js_array_fast_holey_elements_strong_map_index)                             \
-  V(JS_ARRAY_FAST_DOUBLE_ELEMENTS_STRONG_MAP_INDEX, Map,                       \
-    js_array_fast_double_elements_strong_map_index)                            \
-  V(JS_ARRAY_FAST_HOLEY_DOUBLE_ELEMENTS_STRONG_MAP_INDEX, Map,                 \
-    js_array_fast_holey_double_elements_strong_map_index)                      \
   V(JS_MAP_FUN_INDEX, JSFunction, js_map_fun)                                  \
   V(JS_MAP_MAP_INDEX, Map, js_map_map)                                         \
-  V(JS_OBJECT_STRONG_MAP_INDEX, Map, js_object_strong_map)                     \
   V(JS_SET_FUN_INDEX, JSFunction, js_set_fun)                                  \
   V(JS_SET_MAP_INDEX, Map, js_set_map)                                         \
   V(JS_WEAK_MAP_FUN_INDEX, JSFunction, js_weak_map_fun)                        \
@@ -269,10 +258,6 @@ enum BindingFlags {
   V(STRICT_GENERATOR_FUNCTION_MAP_INDEX, Map, strict_generator_function_map)   \
   V(STRING_FUNCTION_INDEX, JSFunction, string_function)                        \
   V(STRING_FUNCTION_PROTOTYPE_MAP_INDEX, Map, string_function_prototype_map)   \
-  V(STRONG_CONSTRUCTOR_MAP_INDEX, Map, strong_constructor_map)                 \
-  V(STRONG_FUNCTION_MAP_INDEX, Map, strong_function_map)                       \
-  V(STRONG_GENERATOR_FUNCTION_MAP_INDEX, Map, strong_generator_function_map)   \
-  V(STRONG_MAP_CACHE_INDEX, Object, strong_map_cache)                          \
   V(SYMBOL_FUNCTION_INDEX, JSFunction, symbol_function)                        \
   V(UINT16_ARRAY_FUN_INDEX, JSFunction, uint16_array_fun)                      \
   V(UINT16X8_FUNCTION_INDEX, JSFunction, uint16x8_function)                    \
@@ -416,12 +401,14 @@ class Context: public FixedArray {
     NATIVE_CONTEXT_SLOTS,
     FIRST_WEAK_SLOT = OPTIMIZED_FUNCTIONS_LIST,
     FIRST_JS_ARRAY_MAP_SLOT = JS_ARRAY_FAST_SMI_ELEMENTS_MAP_INDEX,
-    FIRST_JS_ARRAY_STRONG_MAP_SLOT =
-        JS_ARRAY_FAST_SMI_ELEMENTS_STRONG_MAP_INDEX,
 
     MIN_CONTEXT_SLOTS = GLOBAL_PROXY_INDEX,
     // This slot holds the thrown value in catch contexts.
     THROWN_OBJECT_INDEX = MIN_CONTEXT_SLOTS,
+
+    // These slots hold values in debug evaluate contexts.
+    WRAPPED_CONTEXT_INDEX = MIN_CONTEXT_SLOTS,
+    WHITE_LIST_INDEX = MIN_CONTEXT_SLOTS + 1
   };
 
   void IncrementErrorsThrown();
@@ -474,6 +461,7 @@ class Context: public FixedArray {
   inline bool IsFunctionContext();
   inline bool IsCatchContext();
   inline bool IsWithContext();
+  inline bool IsDebugEvaluateContext();
   inline bool IsBlockContext();
   inline bool IsModuleContext();
   inline bool IsScriptContext();
@@ -539,34 +527,27 @@ class Context: public FixedArray {
 
   static int FunctionMapIndex(LanguageMode language_mode, FunctionKind kind) {
     if (IsGeneratorFunction(kind)) {
-      return is_strong(language_mode) ? STRONG_GENERATOR_FUNCTION_MAP_INDEX :
-             is_strict(language_mode) ? STRICT_GENERATOR_FUNCTION_MAP_INDEX
+      return is_strict(language_mode) ? STRICT_GENERATOR_FUNCTION_MAP_INDEX
                                       : SLOPPY_GENERATOR_FUNCTION_MAP_INDEX;
     }
 
     if (IsClassConstructor(kind)) {
       // Use strict function map (no own "caller" / "arguments")
-      return is_strong(language_mode) ? STRONG_CONSTRUCTOR_MAP_INDEX
-                                      : STRICT_FUNCTION_MAP_INDEX;
+      return STRICT_FUNCTION_MAP_INDEX;
     }
 
     if (IsArrowFunction(kind) || IsConciseMethod(kind) ||
         IsAccessorFunction(kind)) {
-      return is_strong(language_mode)
-                 ? STRONG_FUNCTION_MAP_INDEX
-                 : STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX;
+      return STRICT_FUNCTION_WITHOUT_PROTOTYPE_MAP_INDEX;
     }
 
-    return is_strong(language_mode) ? STRONG_FUNCTION_MAP_INDEX :
-           is_strict(language_mode) ? STRICT_FUNCTION_MAP_INDEX
+    return is_strict(language_mode) ? STRICT_FUNCTION_MAP_INDEX
                                     : SLOPPY_FUNCTION_MAP_INDEX;
   }
 
-  static int ArrayMapIndex(ElementsKind elements_kind,
-                           Strength strength = Strength::WEAK) {
+  static int ArrayMapIndex(ElementsKind elements_kind) {
     DCHECK(IsFastElementsKind(elements_kind));
-    return elements_kind + (is_strong(strength) ? FIRST_JS_ARRAY_STRONG_MAP_SLOT
-                                                : FIRST_JS_ARRAY_MAP_SLOT);
+    return elements_kind + FIRST_JS_ARRAY_MAP_SLOT;
   }
 
   static const int kSize = kHeaderSize + NATIVE_CONTEXT_SLOTS * kPointerSize;