Support for mixed null/smi equality: do not deoptimize, emit same optimized code as if that was smi…

runtime/vm/intermediate_language.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 VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 3793 matching lines @@
  private:
   InstanceCallInstr* instance_call_;
 
   DISALLOW_COPY_AND_ASSIGN(SmiToDoubleInstr);
 };
 
 
 class CheckClassInstr : public TemplateInstruction<1> {
  public:
   CheckClassInstr(Value* value,
-                  InstanceCallInstr* instance_call,
+                  intptr_t deopt_id,
                   const ICData& unary_checks)
       : unary_checks_(unary_checks) {
     ASSERT(value != NULL);
     inputs_[0] = value;
-    deopt_id_ = instance_call->deopt_id();
+    deopt_id_ = deopt_id;
   }
 
   DECLARE_INSTRUCTION(CheckClass)
   virtual RawAbstractType* CompileType() const;
 
   virtual intptr_t ArgumentCount() const { return 0; }
 
   virtual bool CanDeoptimize() const { return true; }
 
   virtual bool HasSideEffect() const { return false; }
@@ skipping 294 matching lines @@
   ForwardInstructionIterator* current_iterator_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_