IBM Support

IV50754: PARTIAL REDUNDANCY ELIMINATION MOVES A STORE NODE WITH AN INCORR ECT TR_NODE FLAG THAT CAUSES THE STORE TO BE OMITTED

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APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
    .
    Stack Trace: N/A
    .
    

Local fix

  • -Xjit:disablePRE will turn off the JIT optimization that moves a
    store with the incorrect TR_Node flags
    

Problem summary

  • The PRE optimization was placing a store node with an incorrect
    TR_Node flag called "branch on count". This meant the store was
    then omitted.
    

Problem conclusion

  • This defect will be fixed in:
    6.0.1 SR7
    7.0.0 SR6
    .
    PRE was updated to become more conservative with respect to node
    flags and clear the relevant node flag to avoid the erroneous
    omission of the store.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV50754

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-10-11

  • Closed date

    2013-10-11

  • Last modified date

    2013-10-11

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

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

Fix information

  • Fixed component name

    JIT

  • Fixed component ID

    620700124

Applicable component levels

  • R260 PSY

       UP

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Document Information

Modified date:
11 October 2013