Move relational operators to the new interceptors.

sdk/lib/_internal/compiler/implementation/ssa/codegen_helpers.dart

 // 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.
 
 part of ssa;
 
 /**
  * Instead of emitting each SSA instruction with a temporary variable
  * mark instructions that can be emitted at their use-site.
  * For example, in:
@@ skipping 48 matching lines @@
   }
 
   // An integer check method must not have its input generated at use site,
   // because it's using it twice.
   void visitIntegerCheck(HIntegerCheck instruction) {}
 
   // A type guard should not generate its input at use site, otherwise
   // they would not be alive.
   void visitTypeGuard(HTypeGuard instruction) {}
 
-  // If an equality operation is builtin it must only have its inputs generated
-  // at use site if it does not require an expression with repeated uses
-  // (because of null / undefined).
-  void visitEquals(HEquals instruction) {
-    HInstruction left = instruction.left;
-    HInstruction right = instruction.right;
-    if (!instruction.isBuiltin(types) ||
-        singleIdentityComparison(left, right, types) != null) {
-      super.visitEquals(instruction);
-    }
-    // Do nothing.
-  }
-
   // An identity operation must only have its inputs generated at use site if
   // does not require an expression with multiple uses (because of null /
   // undefined).
   void visitIdentity(HIdentity instruction) {
     HInstruction left = instruction.left;
     HInstruction right = instruction.right;
     if (singleIdentityComparison(left, right, types) != null) {
       super.visitIdentity(instruction);
     }
     // Do nothing.
@@ skipping 251 matching lines @@
     }
 
     // If [thenInput] is defined in the first predecessor, then it is only used
     // by [phi] and can be generated at use site.
     if (identical(thenInput.block, end.predecessors[0])) {
       assert(thenInput.usedBy.length == 1);
       markAsGenerateAtUseSite(thenInput);
     }
   }
 }