LI77422: COMPILER ADDS UNNECESSARY STORE TO STACK

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • The compiler adds unnecessary store instructions to the stack
    when not needed which could potentially slow down runtime
    performance.
    

Local fix

  • N/A
    

Problem summary

  • USERS AFFECTED:
    Users who compile their code with optimization may be affected
    by this issue.
    
    PROBLEM DESCRIPTION:
    Irrelevant stores are left in the code because the compiler
    does not fix the alias for the symbols on the store.
    

Problem conclusion

  • Appropriate flags needed to be set inside the compiler to
    remove the irrelevant stores.
    

Temporary fix

Comments

APAR Information

  • APAR number

    LI77422

  • Reported component name

    XL C/C++ FOR BG

  • Reported component ID

    5799AG100

  • Reported release

    C10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-05-29

  • Closed date

    2013-05-29

  • Last modified date

    2013-05-29

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

    IV36931

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

Fix information

  • Fixed component name

    XL C/C++ FOR BG

  • Fixed component ID

    5799AG100

Applicable component levels

  • RC10 PSY

       UP



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Document information


More support for:

XL C/C++ for Blue Gene/Q
Compiler

Software version:

12.1

Reference #:

LI77422

Modified date:

2013-05-29

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