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                     SECURITIES AND EXCHANGE COMMISSION
                          Washington, D.C. 20549

                                SCHEDULE 13G

                 Under the Securities Exchange Act of 1934
                          (Amendment No.       )*
                                         ------

                                  IHOP CORP.
                     ----------------------------------
                              (Name of Issuer)

                                  COMMON
                     ----------------------------------
                       (Title of Class of Securities)

                                449623107
                     ----------------------------------
                              (CUSIP Number)

   Check the  following box if a fee is being paid with this statement /X/.  (A
fee is not required only if the filing person:  (1) has a previous statement on
file reporting  beneficial  ownership of more than five percent of the class of
securities  described in Item 1;  and (2)  has  filed no  amendment  subsequent
thereto reporting  beneficial ownership of five percent or less of such class.)
(See Rule 13d-7.)

   *The remainder of  this cover  page  shall  be  filled  out  for a reporting
person's  initial  filing on this  form with  respect to the  subject  class of
securities,  and for any  subsequent  amendment  containing  information  which
would alter the disclosures provided in a prior page.

   The information  required in the  remainder of this  cover page shall not be
deemed to be "filed"  for the purpose of  Section 18 of the Securities Exchange
Act of 1934  ("Act") or otherwise subject to the liabilities of that section of
the Act but shall be subject to all other  provisions of the Act  (however, see
the Notes).


                        (Continued on following page(s))


                              Page 1 of  5  Pages
                                        --- 


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CUSIP No. 449623107                   13G                 Page  2  of  5  Pages
          ---------                                            ---    --- 

- -------------------------------------------------------------------------------
 (1) Names of Reporting Persons.  S.S. or I.R.S. Identification Nos. of Above
     Persons

     SKYLINE ASSET MANAGEMENT, L.P.
     36-4023693
- -------------------------------------------------------------------------------
 (2) Check the Appropriate Box if a Member     (a)  / /
     of a Group*                               (b)  / /
     NOT APPLICABLE
- -------------------------------------------------------------------------------
 (3) SEC Use Only

- -------------------------------------------------------------------------------
 (4) Citizenship or Place of Organization
     DELAWARE LIMITED PARTNERSHIP
- -------------------------------------------------------------------------------
Number of Shares              (5) Sole Voting
 Beneficially                       Power                         NONE
 Owned by                    --------------------------------------------------
 Each Reporting               (6) Shared Voting
 Person With                        Power              528,200 (as of 12/31/97)
                             --------------------------------------------------
                              (7) Sole Dispositive
                                    Power                         NONE
                             --------------------------------------------------
                              (8) Shared Dispositive
                                    Power              528,200 (as of 12/31/97)
- -------------------------------------------------------------------------------
 (9) Aggregate Amount Beneficially Owned by Each Reporting Person
     528,200 (as of 12/31/97)
- -------------------------------------------------------------------------------
(10) Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares*
     NOT APPLICABLE
- -------------------------------------------------------------------------------
(11) Percent of Class Represented by Amount in Row (9)
     5.4%
- -------------------------------------------------------------------------------
(12) Type of Reporting Person*
     IA - INVESTMENT ADVISER
- -------------------------------------------------------------------------------
                    *SEE INSTRUCTION BEFORE FILLING OUT!


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                                                          Page  3  of  5  Pages
                                                               ---    --- 


ITEM 1(A).  NAME OF ISSUER
            IHOP CORP.
- -------------------------------------------------------------------------------


ITEM 1(B).  ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES
            525 N. BRAND BLVD, 3RD FLOOR
            GLENDALE, CA 91203
- -------------------------------------------------------------------------------


ITEM 2(A).  NAME OF PERSON(S) FILING
            THE SHARES REPORTED HEREIN ARE HELD BY SKYLINE ASSET MANAGEMENT, 
            L.P. ("SKYLINE") AS INVESTMENT ADVISER TO CERTAIN CLIENT ACCOUNTS 
            ("ACCOUNTS") OVER WHICH SKYLINE EXERCISES DISCRETION.
- -------------------------------------------------------------------------------


ITEM 2(B).  ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE
            311 SOUTH WACKER DRIVE, SUITE 4500
            CHICAGO, IL 60606
- -------------------------------------------------------------------------------


ITEM 2(C).  CITIZENSHIP
            SKYLINE ASSET MANAGEMENT, L.P. IS A DELAWARE LIMITED PARTNERSHIP.
- -------------------------------------------------------------------------------


ITEM 2(D).  TITLE OF CLASS OF SECURITIES
            COMMON STOCK
- -------------------------------------------------------------------------------


ITEM 2(E).  CUSIP NUMBER
            449623107
- -------------------------------------------------------------------------------


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                                                          Page  4  of  5  Pages
                                                               ---    --- 

ITEM 3.  IF THIS STATEMENT IS FILED PURSUANT TO RULES 13D-1(B), OR 13D-2(B),
  CHECK WHETHER THE PERSON FILING IS A

    (a) / / Broker or Dealer registered under Section 15 of the Act

    (b) / / Bank as defined in section 3(a)(6) of the Act

    (c) / / Insurance Company as defined in section 3(a)(19) of the Act

    (d) / / Investment Company registered under section 8 of the Investment
            Company Act

    (e) /X/ Investment Adviser registered under section 203 of the Investment
            Advisers Act of 1940

    (f) / / Employee Benefit Plan, Pension Fund which is subject to the
            provisions of the Employee Retirement Income Security Act of 1974
            or Endowment Fund; see Rule 13d-1(b)(1)(ii)(F)

    (g) / / Parent Holding Company, in accordance with Rule 13d-1(b)(ii)(G)
            (Note: See Item 7)

    (h) / / Group, in accordance with Rule 13d-1(b)(1)(ii)(H)


ITEM 4.  OWNERSHIP

    (a) Amount Beneficially Owned:
    528,200 SHARES (as of 12/31/97)
    ---------------------------------------------------------------------------

    (b) Percent of Class:
    5.4%
    ---------------------------------------------------------------------------

    (c) Number of shares as to which such person has:

          (i) sole power to vote or to direct the vote
              NONE
              -----------------------------------------------------------------
         (ii) shared power to vote or to direct the vote
              528,200 SHARES* (as of 12/31/97)
              -----------------------------------------------------------------
        (iii) sole power to dispose or to direct the disposition of
              NONE
              -----------------------------------------------------------------
         (iv) shared power to dispose or to direct the disposition of
              528,200 SHARES* (as of 12/31/97)
              -----------------------------------------------------------------
* THE FILING OF THIS SCHEDULE 13G SHALL NOT BE CONSTRUED AS AN ADMISSION THAT 
SKYLINE IS, FOR PURPOSES OF SECTION 13(d) AND 13(g) OF THE SECURITIES 
EXCHANGE ACT OF 1934, THE BENEFICIAL OWNER OF ANY SECURITIES COVERED BY THIS 
STATEMENT. HOWEVER, PURSUANT TO RULE 13d-3(a), THE 528,200 SHARES 
BENEFICIALLY OWNED BY THE ACCOUNTS, WITH RESPECT TO WHICH SKYLINE HAS BEEN 
DELEGATED SHARED VOTING POWER AND SHARED DISPOSITIVE POWER, ARE CONSIDERED TO 
BE SHARES BENEFICIALLY OWNED BY SKYLINE SOLELY BY REASON OF SUCH DESIGNATED 
POWERS.

ITEM 5.  OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS

If this statement is being filed to report the fact that as of the date hereof
the reporting person has ceased to be the beneficial owner of more than five
percent of the class of securities, check the following.  / /


ITEM 6.  OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON
         THE SHARES REPORTED HEREIN HAVE BEEN ACQUIRED BY SKYLINE ON BEHALF 
         OF THE ACCOUNTS. PERSONS OTHER THAN SKYLINE ARE ENTITLED TO RECEIVE 
         ALL DIVIDENDS FROM, AND PROCEEDS FROM THE SALE OF, THOSE SHARES.
- -------------------------------------------------------------------------------


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                                                          Page  5  of  5  Pages
                                                               ---    --- 

ITEM 7.  IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
         THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY
         NOT APPLICABLE.
- -------------------------------------------------------------------------------


ITEM 8.  IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP
         NOT APPLICABLE.
- -------------------------------------------------------------------------------


ITEM 9.  NOTICE OF DISSOLUTION OF GROUP
         NOT APPLICABLE.
- -------------------------------------------------------------------------------


ITEM 10. CERTIFICATION

    By signing below I certify  that,  to the best of my  knowledge and belief,
the  securities  referred to above  were  acquired in the  ordinary  course  of
business and were not acquired for the purpose of and do not have the effect of
changing or  influencing the  control of the issuer of such securities and were
not acquired in  connection with or as a participant in any  transaction having
such purposes or effect.

                                  SIGNATURE

    After  reasonable  inquiry and to the  best of my  knowledge and  belief, I
certify that the  information set forth in this statement is true, complete and
correct.
                                       2/16/99
                                       ----------------------------------------
                                       (Date)

                                       /s/ Scott C. Blim
                                       ----------------------------------------
                                       (Signature)

                                       Scott C. Blim, Chief Financial Officer
                                       ----------------------------------------
                                       (Name/Title)