VM: Simplify lowering of is-tests.

runtime/vm/symbols.h

 // 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.
 
 #ifndef RUNTIME_VM_SYMBOLS_H_
 #define RUNTIME_VM_SYMBOLS_H_
 
 #include "vm/growable_array.h"
 #include "vm/object.h"
 #include "vm/snapshot_ids.h"
@@ skipping 329 matching lines @@
   V(TypeQuote, "type '")                                                       \
   V(QuoteIsNotASubtypeOf, "' is not a subtype of ")                            \
   V(SpaceOfSpace, " of ")                                                      \
   V(SwitchExpr, ":switch_expr")                                                \
   V(TwoNewlines, "\n\n")                                                       \
   V(TwoSpaces, "  ")                                                           \
   V(_instanceOf, "_instanceOf")                                                \
   V(_simpleInstanceOf, "_simpleInstanceOf")                                    \
   V(_simpleInstanceOfTrue, "_simpleInstanceOfTrue")                            \
   V(_simpleInstanceOfFalse, "_simpleInstanceOfFalse")                          \
-  V(_instanceOfSmi, "_instanceOfSmi")                                          \
-  V(_instanceOfNum, "_instanceOfNum")                                          \
-  V(_instanceOfInt, "_instanceOfInt")                                          \
-  V(_instanceOfDouble, "_instanceOfDouble")                                    \
-  V(_instanceOfString, "_instanceOfString")                                    \
   V(_as, "_as")                                                                \
   V(GetterPrefix, "get:")                                                      \
   V(ClosurizePrefix, "get:#")                                                  \
   V(SetterPrefix, "set:")                                                      \
   V(InitPrefix, "init:")                                                       \
   V(Index, "index")                                                            \
   V(DartScheme, "dart:")                                                       \
   V(DartSchemePrivate, "dart:_")                                               \
   V(DartNativeWrappers, "dart:nativewrappers")                                 \
   V(DartNativeWrappersLibName, "dart.nativewrappers")                          \
@@ skipping 328 matching lines @@
   friend class Serializer;
   friend class Deserializer;
   friend class ApiMessageReader;
 
   DISALLOW_COPY_AND_ASSIGN(Symbols);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_SYMBOLS_H_