[parsing] Move EvalComparison out of the assembler.

src/parsing/token.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_PARSING_TOKEN_H_
 #define V8_PARSING_TOKEN_H_
 
 #include "src/base/logging.h"
 #include "src/globals.h"
 
@@ skipping 262 matching lines @@
       case LT: return GT;
       case GT: return LT;
       case LTE: return GTE;
       case GTE: return LTE;
       default:
         UNREACHABLE();
         return op;
     }
   }
 
+  static bool EvalComparison(Value op, double op1, double op2) {
+    DCHECK(IsArithmeticCompareOp(op));
+    switch (op) {
+      case Token::EQ:
+      case Token::EQ_STRICT: return (op1 == op2);
+      case Token::NE: return (op1 != op2);
+      case Token::LT: return (op1 < op2);
+      case Token::GT: return (op1 > op2);
+      case Token::LTE: return (op1 <= op2);
+      case Token::GTE: return (op1 >= op2);
+      default:
+        UNREACHABLE();
+        return false;
+    }
+  }
+
   static bool IsBitOp(Value op) {
     return (BIT_OR <= op && op <= SHR) || op == BIT_NOT;
   }
 
   static bool IsUnaryOp(Value op) {
     return (NOT <= op && op <= VOID) || op == ADD || op == SUB;
   }
 
   static bool IsCountOp(Value op) {
     return op == INC || op == DEC;
@@ skipping 22 matching lines @@
   static const char* const name_[NUM_TOKENS];
   static const char* const string_[NUM_TOKENS];
   static const int8_t precedence_[NUM_TOKENS];
   static const char token_type[NUM_TOKENS];
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_TOKEN_H_