[ic] Introduce BOOLEAN state for CompareIC.

src/ic/ic-state.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_IC_STATE_H_
 #define V8_IC_STATE_H_
 
 #include "src/macro-assembler.h"
 
 namespace v8 {
@@ skipping 156 matching lines @@
 std::ostream& operator<<(std::ostream& os, const BinaryOpICState& s);
 
 
 class CompareICState {
  public:
   // The type/state lattice is defined by the following inequations:
   //   UNINITIALIZED < ...
   //   ... < GENERIC
   //   SMI < NUMBER
   //   INTERNALIZED_STRING < STRING
+  //   INTERNALIZED_STRING < UNIQUE_NAME
   //   KNOWN_OBJECT < OBJECT
   enum State {
     UNINITIALIZED,
+    BOOLEAN,
     SMI,
     NUMBER,
     STRING,
     INTERNALIZED_STRING,
     UNIQUE_NAME,   // Symbol or InternalizedString
     OBJECT,        // JSObject
     KNOWN_OBJECT,  // JSObject with specific map (faster check)
     GENERIC
   };
 
@@ skipping 73 matching lines @@
   static const ExtraICState kStrictModeState = STRICT
                                                << LanguageModeState::kShift;
 
  private:
   const ExtraICState state_;
 };
 }
 }
 
 #endif  // V8_IC_STATE_H_