[parsing] Move EvalComparison out of the assembler.

src/parsing/token.h

Index: src/parsing/token.h
diff --git a/src/parsing/token.h b/src/parsing/token.h
index fee1f7e85aa3a02ef9b3aa56d666ce203a4166f9..7a62b4d9153a399ac546df9496ed5d921d863ed3 100644
--- a/src/parsing/token.h
+++ b/src/parsing/token.h
@@ -280,6 +280,22 @@ class Token {
     }
   }
 
+  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;
   }