Port and integrate the irregexp engine from V8

runtime/vm/object.cc

Index: runtime/vm/object.cc
diff --git a/runtime/vm/object.cc b/runtime/vm/object.cc
index be9e0298b03c1ce78d9259db7d4cfde68920042b..0e9f87aba7f6d90d837aca78a81721ae8851627e 100644
--- a/runtime/vm/object.cc
+++ b/runtime/vm/object.cc
@@ -5298,6 +5298,9 @@ const char* Function::KindToCString(RawFunction::Kind kind) {
     case RawFunction::kInvokeFieldDispatcher:
       return "kInvokeFieldDispatcher";
       break;
+    case RawFunction::kIrregexpFunction:
+      return "kIrregexpFunction";
+      break;
     default:
       UNREACHABLE();
       return NULL;
@@ -5383,6 +5386,21 @@ void Function::set_owner(const Object& value) const {
 }
 
 
+RawJSRegExp* Function::regexp() const {
+  ASSERT(kind() == RawFunction::kIrregexpFunction);
+  const Object& obj = Object::Handle(raw_ptr()->data_);
+  ASSERT(obj.IsJSRegExp());
+  return JSRegExp::Cast(obj).raw();
+}
+
+
+void Function::set_regexp(const JSRegExp& value) const {
+  ASSERT(kind() == RawFunction::kIrregexpFunction);
+  ASSERT(raw_ptr()->data_ == Object::null());
+  set_data(value);
+}
+
+
 void Function::set_result_type(const AbstractType& value) const {
   ASSERT(!value.IsNull());
   StorePointer(&raw_ptr()->result_type_, value.raw());
@@ -6640,6 +6658,9 @@ const char* Function::ToCString() const {
     case RawFunction::kInvokeFieldDispatcher:
       kind_str = "invoke-field-dispatcher";
       break;
+    case RawFunction::kIrregexpFunction:
+      kind_str = "irregexp-function";
+      break;
     default:
       UNREACHABLE();
   }
@@ -10316,6 +10337,7 @@ void Library::CheckFunctionFingerprints() {
 
   all_libs.Add(&Library::ZoneHandle(Library::CoreLibrary()));
   CORE_LIB_INTRINSIC_LIST(CHECK_FINGERPRINTS);
+  CORE_REGEXP_LIB_INTRINSIC_LIST(CHECK_FINGERPRINTS);
   CORE_INTEGER_LIB_INTRINSIC_LIST(CHECK_FINGERPRINTS);
 
   all_libs.Add(&Library::ZoneHandle(Library::MathLibrary()));
@@ -19926,6 +19948,11 @@ void JSRegExp::set_pattern(const String& pattern) const {
 }
 
 
+void JSRegExp::set_function(intptr_t cid, const Function& value) const {
+  StorePointer(FunctionAddr(cid), value.raw());
+}
+
+
 void JSRegExp::set_num_bracket_expressions(intptr_t value) const {
   StoreSmi(&raw_ptr()->num_bracket_expressions_, Smi::New(value));
 }