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>

11 files changed, 131 insertions, 13 deletions

diff --git a/deps/v8/src/regexp/arm/regexp-macro-assembler-arm.cc b/deps/v8/src/regexp/arm/regexp-macro-assembler-arm.cc
index d502060440..d296d90e7d 100644
--- a/deps/v8/src/regexp/arm/regexp-macro-assembler-arm.cc
+++ b/deps/v8/src/regexp/arm/regexp-macro-assembler-arm.cc
@@ -7,9 +7,9 @@
 #include "src/regexp/arm/regexp-macro-assembler-arm.h"
 
 #include "src/code-stubs.h"
-#include "src/cpu-profiler.h"
 #include "src/log.h"
 #include "src/macro-assembler.h"
+#include "src/profiler/cpu-profiler.h"
 #include "src/regexp/regexp-macro-assembler.h"
 #include "src/regexp/regexp-stack.h"
 #include "src/unicode.h"
diff --git a/deps/v8/src/regexp/arm64/regexp-macro-assembler-arm64.cc b/deps/v8/src/regexp/arm64/regexp-macro-assembler-arm64.cc
index ed24cf3401..d440879e26 100644
--- a/deps/v8/src/regexp/arm64/regexp-macro-assembler-arm64.cc
+++ b/deps/v8/src/regexp/arm64/regexp-macro-assembler-arm64.cc
@@ -7,9 +7,9 @@
 #include "src/regexp/arm64/regexp-macro-assembler-arm64.h"
 
 #include "src/code-stubs.h"
-#include "src/cpu-profiler.h"
 #include "src/log.h"
 #include "src/macro-assembler.h"
+#include "src/profiler/cpu-profiler.h"
 #include "src/regexp/regexp-macro-assembler.h"
 #include "src/regexp/regexp-stack.h"
 #include "src/unicode.h"
diff --git a/deps/v8/src/regexp/ia32/regexp-macro-assembler-ia32.cc b/deps/v8/src/regexp/ia32/regexp-macro-assembler-ia32.cc
index 3ba5db14f2..9e50a10574 100644
--- a/deps/v8/src/regexp/ia32/regexp-macro-assembler-ia32.cc
+++ b/deps/v8/src/regexp/ia32/regexp-macro-assembler-ia32.cc
@@ -6,9 +6,9 @@
 
 #include "src/regexp/ia32/regexp-macro-assembler-ia32.h"
 
-#include "src/cpu-profiler.h"
 #include "src/log.h"
 #include "src/macro-assembler.h"
+#include "src/profiler/cpu-profiler.h"
 #include "src/regexp/regexp-macro-assembler.h"
 #include "src/regexp/regexp-stack.h"
 #include "src/unicode.h"
diff --git a/deps/v8/src/regexp/jsregexp.cc b/deps/v8/src/regexp/jsregexp.cc
index aacaa1b9d3..438d1b1368 100644
--- a/deps/v8/src/regexp/jsregexp.cc
+++ b/deps/v8/src/regexp/jsregexp.cc
@@ -10,6 +10,7 @@
 #include "src/compiler.h"
 #include "src/execution.h"
 #include "src/factory.h"
+#include "src/isolate-inl.h"
 #include "src/messages.h"
 #include "src/ostreams.h"
 #include "src/parser.h"
@@ -6406,5 +6407,98 @@ bool RegExpEngine::TooMuchRegExpCode(Handle<String> pattern) {
   }
   return too_much;
 }
+
+
+Object* RegExpResultsCache::Lookup(Heap* heap, String* key_string,
+                                   Object* key_pattern, ResultsCacheType type) {
+  FixedArray* cache;
+  if (!key_string->IsInternalizedString()) return Smi::FromInt(0);
+  if (type == STRING_SPLIT_SUBSTRINGS) {
+    DCHECK(key_pattern->IsString());
+    if (!key_pattern->IsInternalizedString()) return Smi::FromInt(0);
+    cache = heap->string_split_cache();
+  } else {
+    DCHECK(type == REGEXP_MULTIPLE_INDICES);
+    DCHECK(key_pattern->IsFixedArray());
+    cache = heap->regexp_multiple_cache();
+  }
+
+  uint32_t hash = key_string->Hash();
+  uint32_t index = ((hash & (kRegExpResultsCacheSize - 1)) &
+                    ~(kArrayEntriesPerCacheEntry - 1));
+  if (cache->get(index + kStringOffset) == key_string &&
+      cache->get(index + kPatternOffset) == key_pattern) {
+    return cache->get(index + kArrayOffset);
+  }
+  index =
+      ((index + kArrayEntriesPerCacheEntry) & (kRegExpResultsCacheSize - 1));
+  if (cache->get(index + kStringOffset) == key_string &&
+      cache->get(index + kPatternOffset) == key_pattern) {
+    return cache->get(index + kArrayOffset);
+  }
+  return Smi::FromInt(0);
+}
+
+
+void RegExpResultsCache::Enter(Isolate* isolate, Handle<String> key_string,
+                               Handle<Object> key_pattern,
+                               Handle<FixedArray> value_array,
+                               ResultsCacheType type) {
+  Factory* factory = isolate->factory();
+  Handle<FixedArray> cache;
+  if (!key_string->IsInternalizedString()) return;
+  if (type == STRING_SPLIT_SUBSTRINGS) {
+    DCHECK(key_pattern->IsString());
+    if (!key_pattern->IsInternalizedString()) return;
+    cache = factory->string_split_cache();
+  } else {
+    DCHECK(type == REGEXP_MULTIPLE_INDICES);
+    DCHECK(key_pattern->IsFixedArray());
+    cache = factory->regexp_multiple_cache();
+  }
+
+  uint32_t hash = key_string->Hash();
+  uint32_t index = ((hash & (kRegExpResultsCacheSize - 1)) &
+                    ~(kArrayEntriesPerCacheEntry - 1));
+  if (cache->get(index + kStringOffset) == Smi::FromInt(0)) {
+    cache->set(index + kStringOffset, *key_string);
+    cache->set(index + kPatternOffset, *key_pattern);
+    cache->set(index + kArrayOffset, *value_array);
+  } else {
+    uint32_t index2 =
+        ((index + kArrayEntriesPerCacheEntry) & (kRegExpResultsCacheSize - 1));
+    if (cache->get(index2 + kStringOffset) == Smi::FromInt(0)) {
+      cache->set(index2 + kStringOffset, *key_string);
+      cache->set(index2 + kPatternOffset, *key_pattern);
+      cache->set(index2 + kArrayOffset, *value_array);
+    } else {
+      cache->set(index2 + kStringOffset, Smi::FromInt(0));
+      cache->set(index2 + kPatternOffset, Smi::FromInt(0));
+      cache->set(index2 + kArrayOffset, Smi::FromInt(0));
+      cache->set(index + kStringOffset, *key_string);
+      cache->set(index + kPatternOffset, *key_pattern);
+      cache->set(index + kArrayOffset, *value_array);
+    }
+  }
+  // If the array is a reasonably short list of substrings, convert it into a
+  // list of internalized strings.
+  if (type == STRING_SPLIT_SUBSTRINGS && value_array->length() < 100) {
+    for (int i = 0; i < value_array->length(); i++) {
+      Handle<String> str(String::cast(value_array->get(i)), isolate);
+      Handle<String> internalized_str = factory->InternalizeString(str);
+      value_array->set(i, *internalized_str);
+    }
+  }
+  // Convert backing store to a copy-on-write array.
+  value_array->set_map_no_write_barrier(*factory->fixed_cow_array_map());
+}
+
+
+void RegExpResultsCache::Clear(FixedArray* cache) {
+  for (int i = 0; i < kRegExpResultsCacheSize; i++) {
+    cache->set(i, Smi::FromInt(0));
+  }
+}
+
 }  // namespace internal
 }  // namespace v8
diff --git a/deps/v8/src/regexp/jsregexp.h b/deps/v8/src/regexp/jsregexp.h
index 39e702149d..760d37862b 100644
--- a/deps/v8/src/regexp/jsregexp.h
+++ b/deps/v8/src/regexp/jsregexp.h
@@ -1659,6 +1659,30 @@ class RegExpEngine: public AllStatic {
 };
 
 
-} }  // namespace v8::internal
+class RegExpResultsCache : public AllStatic {
+ public:
+  enum ResultsCacheType { REGEXP_MULTIPLE_INDICES, STRING_SPLIT_SUBSTRINGS };
+
+  // Attempt to retrieve a cached result.  On failure, 0 is returned as a Smi.
+  // On success, the returned result is guaranteed to be a COW-array.
+  static Object* Lookup(Heap* heap, String* key_string, Object* key_pattern,
+                        ResultsCacheType type);
+  // Attempt to add value_array to the cache specified by type.  On success,
+  // value_array is turned into a COW-array.
+  static void Enter(Isolate* isolate, Handle<String> key_string,
+                    Handle<Object> key_pattern, Handle<FixedArray> value_array,
+                    ResultsCacheType type);
+  static void Clear(FixedArray* cache);
+  static const int kRegExpResultsCacheSize = 0x100;
+
+ private:
+  static const int kArrayEntriesPerCacheEntry = 4;
+  static const int kStringOffset = 0;
+  static const int kPatternOffset = 1;
+  static const int kArrayOffset = 2;
+};
+
+}  // namespace internal
+}  // namespace v8
 
 #endif  // V8_REGEXP_JSREGEXP_H_
diff --git a/deps/v8/src/regexp/mips64/regexp-macro-assembler-mips64.cc b/deps/v8/src/regexp/mips64/regexp-macro-assembler-mips64.cc
index 838fc68a80..869cbc4f2e 100644
--- a/deps/v8/src/regexp/mips64/regexp-macro-assembler-mips64.cc
+++ b/deps/v8/src/regexp/mips64/regexp-macro-assembler-mips64.cc
@@ -219,7 +219,7 @@ void RegExpMacroAssemblerMIPS::CheckCharacterGT(uc16 limit, Label* on_greater) {
 void RegExpMacroAssemblerMIPS::CheckAtStart(Label* on_at_start) {
   Label not_at_start;
   // Did we start the match at the start of the string at all?
-  __ lw(a0, MemOperand(frame_pointer(), kStartIndex));
+  __ ld(a0, MemOperand(frame_pointer(), kStartIndex));
   BranchOrBacktrack(&not_at_start, ne, a0, Operand(zero_reg));
 
   // If we did, are we still at the start of the input?
@@ -232,7 +232,7 @@ void RegExpMacroAssemblerMIPS::CheckAtStart(Label* on_at_start) {
 
 void RegExpMacroAssemblerMIPS::CheckNotAtStart(Label* on_not_at_start) {
   // Did we start the match at the start of the string at all?
-  __ lw(a0, MemOperand(frame_pointer(), kStartIndex));
+  __ ld(a0, MemOperand(frame_pointer(), kStartIndex));
   BranchOrBacktrack(on_not_at_start, ne, a0, Operand(zero_reg));
   // If we did, are we still at the start of the input?
   __ ld(a1, MemOperand(frame_pointer(), kInputStart));
@@ -779,7 +779,7 @@ Handle<HeapObject> RegExpMacroAssemblerMIPS::GetCode(Handle<String> source) {
       if (global()) {
         // Restart matching if the regular expression is flagged as global.
         __ ld(a0, MemOperand(frame_pointer(), kSuccessfulCaptures));
-        __ lw(a1, MemOperand(frame_pointer(), kNumOutputRegisters));
+        __ ld(a1, MemOperand(frame_pointer(), kNumOutputRegisters));
         __ ld(a2, MemOperand(frame_pointer(), kRegisterOutput));
         // Increment success counter.
         __ Daddu(a0, a0, 1);
@@ -1155,8 +1155,8 @@ int64_t RegExpMacroAssemblerMIPS::CheckStackGuardState(Address* return_address,
                                                        Address re_frame) {
   return NativeRegExpMacroAssembler::CheckStackGuardState(
       frame_entry<Isolate*>(re_frame, kIsolate),
-      frame_entry<int>(re_frame, kStartIndex),
-      frame_entry<int>(re_frame, kDirectCall) == 1, return_address, re_code,
+      static_cast<int>(frame_entry<int64_t>(re_frame, kStartIndex)),
+      frame_entry<int64_t>(re_frame, kDirectCall) == 1, return_address, re_code,
       frame_entry_address<String*>(re_frame, kInputString),
       frame_entry_address<const byte*>(re_frame, kInputStart),
       frame_entry_address<const byte*>(re_frame, kInputEnd));
diff --git a/deps/v8/src/regexp/ppc/regexp-macro-assembler-ppc.cc b/deps/v8/src/regexp/ppc/regexp-macro-assembler-ppc.cc
index e820aa9bbf..03f9741147 100644
--- a/deps/v8/src/regexp/ppc/regexp-macro-assembler-ppc.cc
+++ b/deps/v8/src/regexp/ppc/regexp-macro-assembler-ppc.cc
@@ -8,9 +8,9 @@
 
 #include "src/base/bits.h"
 #include "src/code-stubs.h"
-#include "src/cpu-profiler.h"
 #include "src/log.h"
 #include "src/macro-assembler.h"
+#include "src/profiler/cpu-profiler.h"
 #include "src/regexp/regexp-macro-assembler.h"
 #include "src/regexp/regexp-stack.h"
 #include "src/unicode.h"
diff --git a/deps/v8/src/regexp/regexp-macro-assembler.cc b/deps/v8/src/regexp/regexp-macro-assembler.cc
index 20105c0b30..9916d5f32f 100644
--- a/deps/v8/src/regexp/regexp-macro-assembler.cc
+++ b/deps/v8/src/regexp/regexp-macro-assembler.cc
@@ -6,6 +6,7 @@
 
 #include "src/assembler.h"
 #include "src/ast.h"
+#include "src/isolate-inl.h"
 #include "src/regexp/regexp-stack.h"
 #include "src/simulator.h"
 
diff --git a/deps/v8/src/regexp/regexp-stack.cc b/deps/v8/src/regexp/regexp-stack.cc
index 348e684151..34f9127f2f 100644
--- a/deps/v8/src/regexp/regexp-stack.cc
+++ b/deps/v8/src/regexp/regexp-stack.cc
@@ -5,7 +5,6 @@
 #include "src/regexp/regexp-stack.h"
 
 #include "src/isolate.h"
-#include "src/objects-inl.h"  // TODO(mstarzinger): Temporary cycle breaker!
 
 namespace v8 {
 namespace internal {
diff --git a/deps/v8/src/regexp/x64/regexp-macro-assembler-x64.cc b/deps/v8/src/regexp/x64/regexp-macro-assembler-x64.cc
index c0f5f2c323..969edc1b3b 100644
--- a/deps/v8/src/regexp/x64/regexp-macro-assembler-x64.cc
+++ b/deps/v8/src/regexp/x64/regexp-macro-assembler-x64.cc
@@ -6,9 +6,9 @@
 
 #include "src/regexp/x64/regexp-macro-assembler-x64.h"
 
-#include "src/cpu-profiler.h"
 #include "src/log.h"
 #include "src/macro-assembler.h"
+#include "src/profiler/cpu-profiler.h"
 #include "src/regexp/regexp-macro-assembler.h"
 #include "src/regexp/regexp-stack.h"
 #include "src/unicode.h"
diff --git a/deps/v8/src/regexp/x87/regexp-macro-assembler-x87.cc b/deps/v8/src/regexp/x87/regexp-macro-assembler-x87.cc
index c30994eae0..c6968dc197 100644
--- a/deps/v8/src/regexp/x87/regexp-macro-assembler-x87.cc
+++ b/deps/v8/src/regexp/x87/regexp-macro-assembler-x87.cc
@@ -6,9 +6,9 @@
 
 #include "src/regexp/x87/regexp-macro-assembler-x87.h"
 
-#include "src/cpu-profiler.h"
 #include "src/log.h"
 #include "src/macro-assembler.h"
+#include "src/profiler/cpu-profiler.h"
 #include "src/regexp/regexp-macro-assembler.h"
 #include "src/regexp/regexp-stack.h"
 #include "src/unicode.h"