Split IdenticalWithNumberCheck in two versions: once called from unoptimized code the other called…

runtime/vm/stub_code.h

 // Copyright (c) 2011, 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 VM_STUB_CODE_H_
 #define VM_STUB_CODE_H_
 
 #include "vm/allocation.h"
 #include "vm/assembler.h"
 
@@ skipping 21 matching lines @@
   V(Deoptimize)                                                                \
   V(DeoptimizeLazy)                                                            \
   V(BreakpointRuntime)                                                         \
   V(BreakpointStatic)                                                          \
   V(BreakpointReturn)                                                          \
   V(Subtype1TestCache)                                                         \
   V(Subtype2TestCache)                                                         \
   V(Subtype3TestCache)                                                         \
   V(GetStackPointer)                                                           \
   V(JumpToExceptionHandler)                                                    \
-  V(IdenticalWithNumberCheck)                                                  \
+  V(UnoptimizedIdenticalWithNumberCheck)                                       \
+  V(OptimizedIdenticalWithNumberCheck)                                         \
 
 // Is it permitted for the stubs above to refer to Object::null(), which is
 // allocated in the VM isolate and shared across all isolates.
 // However, in cases where a simple GC-safe placeholder is needed on the stack,
 // using Smi 0 instead of Object::null() is slightly more efficient, since a Smi
 // does not require relocation.
 
 // List of stubs created per isolate, these stubs could potentially contain
 // embedded objects and hence cannot be shared across isolates.
 #define STUB_CODE_LIST(V)                                                      \
@@ skipping 137 matching lines @@
   static void GenerateMegamorphicMissStub(Assembler* assembler);
   static void GenerateAllocationStubForClass(Assembler* assembler,
                                              const Class& cls);
   static void GenerateAllocationStubForClosure(Assembler* assembler,
                                                const Function& func);
   static void GenerateNArgsCheckInlineCacheStub(Assembler* assembler,
                                                 intptr_t num_args);
   static void GenerateUsageCounterIncrement(Assembler* assembler,
                                             Register temp_reg);
   static void GenerateOptimizedUsageCounterIncrement(Assembler* assembler);
+
+  static void GenerateIdenticalWithNumberCheckStub(
+      Assembler* assembler,
+      const Register left,
+      const Register right,
+      const Register temp1 = kNoRegister,
+      const Register temp2 = kNoRegister);
 };
 
 }  // namespace dart
 
 #endif  // VM_STUB_CODE_H_