PI89064: NEW FUNCTION: ABO SUPPORT FOR MODULES CONTAINING PROGRAM SEGMENTATION.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABO support for modules containing Program Segmentation.
  

Local fix

Problem summary

• ABO can now optimize most compiled programs containing program
  segmentation
  ****************************************************************
  * USERS AFFECTED: All users of the IBM Automatic Binary        *
  * Optimizer (ABO) for z/OS, v1.3 optimizing                    *
  * programs containing program segmentation                     *
  *                                                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: This new function APAR adds support     *
  *                     for most programs compiled from source   *
  *                     that contain program segmentation        *
  *                     using priority numbers on sections.      *
  *                                                              *
  *                     Previously ABO would skip optimizing     *
  *                     these CSECTs and issue the message:      *
  *                                                              *
  *                     BOZ1455: unsupported feature             *
  *                      ""Program Segmentation"" found          *
  *                                                              *
  *                     Now with this APAR the majority of       *
  *                     these compiled programs will be          *
  *                     successfully optimized.                  *
  *                                                              *
  *                     The one remaining scenario that is       *
  *                     still not supported by ABO is when the   *
  *                     source contains *all* of the below       *
  *                     characteristics:                         *
  *                      -Priority numbers are present with      *
  *                       values 50->99 (i.e. independent        *
  *                       segments)                              *
  *                      - One or more ALTER statements are      *
  *                        present in an independent segment     *
  *                        where the GO TO being altered IS ALSO *
  *                        an independent segment with an equal  *
  *                        priority number                       *
  *                                                              *
  *                   - One or more GO TO DEPENDING ON           *
  *                     statements are present somewhere in      *
  *                     the program                              *
  *                                                              *
  *                   In this case the message below will be     *
  *                   issued and the CSECT skipped :             *
  *                                                              *
  *                   BOZ1455: unsupported feature ""Program     *
  *                   Complexity 176"" found                     *
  *                     Below is a source code snippet showing   *
  *                     one example of this remaining            *
  *                     unsupported case:                        *
  *                     LabStart Section 60.                     *
  *                     if var = 3                               *
  *                     alter LabA to proceed to                 *
  *                     LabX                                     *
  *                     else if var = 2                          *
  *                     alter LabA to proceed to                 *
  *                     LabY                                     *
  *                     else                                     *
  *                     go to LabX depending on                  *
  *                     var2                                     *
  *                     end-if                                   *
  *                      .                                       *
  *                     LabA Section 60.                         *
  *                     go to."                                  *
  ****************************************************************
  * RECOMMENDATION:  Apply provided service                      *
  ****************************************************************
  ABO can now optimize compiled programs containing user written
  SERVICE LABELs
  

Problem conclusion

• Compiled programs containing user written SERVICE LABELs can now
  be optimized by ABO
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Modules/Macros

• BOZBXITA BOZEXE1  BOZJIVP  BOZMSGE  BOZMSGK  BOZMSGT  BOZOBJ1
  BOZOPT   BOZRIDT  BOZSRC1
  

Fix information

• Fixed component name

  AUTO BINARY OPT

• Fixed component ID

  5697AB100

Applicable component levels

• R130 PSY UI51540

     UP17/11/01 P F710  

• R13J PSY UI51541

     UP17/11/01 P F710  

Fix is available

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