Recognize and optimize a.runtimeType == b.runtimeType pattern.

runtime/vm/method_recognizer.h

Index: runtime/vm/method_recognizer.h
diff --git a/runtime/vm/method_recognizer.h b/runtime/vm/method_recognizer.h
index 04f49ed13e092cf1a6b0b2915723731ae80e221c..df9e30844e99b6cff8127e102d4491d1c3314d8b 100644
--- a/runtime/vm/method_recognizer.h
+++ b/runtime/vm/method_recognizer.h
@@ -167,6 +167,7 @@ namespace dart {
   V(_RegExp, _ExecuteMatch, RegExp_ExecuteMatch, Dynamic, 0x6036d7fa)          \
   V(Object, ==, ObjectEquals, Bool, 0x11662ed8)                                \
   V(Object, get:runtimeType, ObjectRuntimeType, Type, 0x00e7c26b)              \
+  V(Object, _haveSameRuntimeType, ObjectHaveSameRuntimeType, Bool, 0x72aad7e2) \
   V(_StringBase, get:hashCode, String_getHashCode, Smi, 0x78c2eb88)            \
   V(_StringBase, get:isEmpty, StringBaseIsEmpty, Bool, 0x74c21fca)             \
   V(_StringBase, _substringMatches, StringBaseSubstringMatches, Bool,          \
@@ -489,6 +490,7 @@ namespace dart {
   V(_TypedList, _setFloat64, ByteArrayBaseSetFloat64, 0x4765edda)              \
   V(_TypedList, _setFloat32x4, ByteArrayBaseSetFloat32x4, 0x7cca4533)          \
   V(_TypedList, _setInt32x4, ByteArrayBaseSetInt32x4, 0x7631bdbc)              \
+  V(Object, get:runtimeType, ObjectRuntimeType, 0x00e7c26b)                    \
 
 // Forward declarations.
 class Function;