Optimize equality for case when all targets are Object.equals.

runtime/vm/object.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/bigint_operations.h"
@@ skipping 7597 matching lines @@
     } else {
       // This will make sure that Smi is first if it exists.
       result.AddReceiverCheck(class_id,
                               Function::Handle(GetTargetAt(i)));
     }
   }
   return result.raw();
 }
 
 
+bool ICData::AllTargetsHaveSameOwner(intptr_t owner_cid) const {
+  if (NumberOfChecks() == 0) return false;
+  Class& cls = Class::Handle();
+  for (intptr_t i = 0; i < NumberOfChecks(); i++) {
+    cls = Function::Handle(GetTargetAt(i)).owner();
+    if (cls.id() != owner_cid) {
+      return false;
+    }
+  }
+  return true;
+}
+
+
+bool ICData::AllReceiversAreNumbers() const {
+  if (NumberOfChecks() == 0) return false;
+  Class& cls = Class::Handle();
+  for (intptr_t i = 0; i < NumberOfChecks(); i++) {
+    cls = Function::Handle(GetTargetAt(i)).owner();
+    const intptr_t cid = cls.id();
+    if ((cid != kSmiCid) &&
+        (cid != kMintCid) &&
+        (cid != kBigintCid) &&
+        (cid != kDoubleCid)) {
+      return false;
+    }
+  }
+  return true;
+}
+
+
 RawICData* ICData::New(const Function& function,
                        const String& target_name,
                        intptr_t deopt_id,
                        intptr_t num_args_tested) {
   ASSERT(Object::icdata_class() != Class::null());
   ASSERT(num_args_tested > 0);
   ICData& result = ICData::Handle();
   {
     // IC data objects are long living objects, allocate them in old generation.
     RawObject* raw = Object::Allocate(ICData::kClassId,
@@ skipping 3400 matching lines @@
 const char* JSRegExp::ToCString() const {
   const String& str = String::Handle(pattern());
   const char* format = "JSRegExp: pattern=%s flags=%s";
   intptr_t len = OS::SNPrint(NULL, 0, format, str.ToCString(), Flags());
   char* chars = Isolate::Current()->current_zone()->Alloc<char>(len + 1);
   OS::SNPrint(chars, (len + 1), format, str.ToCString(), Flags());
   return chars;
 }
 
 }  // namespace dart