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LI75111: LONG -O2 COMPILE TIME IN .CT_SEARCH

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • When compiling an application with basic -O optimization, the
    compile time is significantly longer than without optimization.
    
    This APAR lowers the compile time in xlCcode for compilations
    that spend a lot of time in the internal .ct_search compiler
    routine.
    

Local fix

  • Do not compile with optimization.
    

Problem summary

  • USERS AFFECTED:
    Users compiling a large source file or program.
    
    PROBLEM DESCRIPTION:
    The compile speed is very slow for -O2 and up compared to noopt.
    

Problem conclusion

  • Improved an optimization algorithm.  Compile-time performance
    is now faster.
    

Temporary fix

Comments

APAR Information

  • APAR number

    LI75111

  • Reported component name

    XL C/C++ RHEL52

  • Reported component ID

    5724U8310

  • Reported release

    A10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2009-12-01

  • Closed date

    2009-12-01

  • Last modified date

    2009-12-01

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

    IZ54505

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

Fix information

  • Fixed component name

    XL C/C++ RHEL52

  • Fixed component ID

    5724U8310

Applicable component levels

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"SSJT9L","label":"XL C\/C++"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"A.1","Line of Business":{"code":"LOB08","label":"Cognitive Systems"}}]

Document Information

Modified date:
14 October 2021