IV78217: PROBLEM WITH JIT COMPILED CODE WITH AUTO-SIMD WHEN -XJIT:ENABLEG PU IS SPECIFIED

APAR status

• Closed as program error.

Error description

• Error Message: N/A
  .
  Stack Trace: N/A
  .
  This problem can only occur if auto-SIMD is enabled on either
  the z13 platform or POWER 7 or later platform. In addition, this
  problem can only occur if -Xjit:enableGPU is specified.
  

Local fix

• Either specify -Xjit:disableAutoSIMD or remove -Xjit:enableGPU
  Note that this may affect performance.
  

Problem summary

• While performing GPU analysis triggered by the -Xjit:enableGPU
  option, the JIT compiler incorrectly modified a data structure
  that is also used during the autoSIMD transformations. This
  caused incorrect auto-SIMD code to be generated.
  

Problem conclusion

• The JIT compiler has been updated not to modify auto-SIMD data
  structures during GPU analysis.
  .
  This APAR will be fixed in the following Java Releases:
   8 SR2 (8.0.2.0)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
   https://www.ibm.com/developerworks/java/jdk/
  

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:

• Fixed component name

  JIT

• Fixed component ID

  620700124

Applicable component levels

• R130 PSY

     UP