LI77071: INTERNAL COMPILER ERROR IN IPA64

November 2012 Update for XL C/C++ for Blue Gene/Q, V12.1
February 2013 Update for XL C/C++ for Blue Gene/Q, V12.1
May 2013 Update for XL C/C++ for Blue Gene/Q, V12.1

APAR status

• Closed as program error.

Error description

• The IPA component of the compiler is encountering an internal
  error when processing a local array that is used as a parameter
  for a function call.
  
  The issue occurs when the -qipa=level=2 option is enabled (set
  by default with -O5), and the build is 64-bit (-q64).
  
  During the IPA link step, an error similar to the error below is
  output:
  
  
  $ xlc  -qipa=level=2 -q64 myobj1.o myobj2.o -V
  export XL_CONFIG=/etc/vac.cfg.53:xlc
  export XL_BACKEND=/usr/vac/exe/xlCcode
  export XL_LINKER=/bin/ld
  ipa64 -link -V -qosvar=aix.5.3 -qipa=level=2 -q64 -b64
  -qlargetype -b64 /lib/crt0_64.o -bpT:0x100000000
  -bpD:0x110000000 myobj1.o myobj2.o -L/usr/lpp/xlC/lib/aix53
  -L/usr/lib -L/usr/vac/lib -L/usr/vac/lib -lxlopt -lxlipa -lxl
  -lc
      1500-004: (U) INTERNAL COMPILER ERROR while compiling main.
  Compilation ended.  Contact your Service Representative and
  provide the following information: Internal abort. For more
  information visit:
  http://www.ibm.com/support/docview.wss?uid=swg21110810
  1586-346 (U) An error occurred during code generation.  The code
  generation return code was 1.
  $
  

Local fix

• Avoid IPA usage.  The -qipa option can be removed, or the
  -qnoipa option can be added.
  

Problem summary

• PROBLEM DESCRIPTION:
  Internal compiler error and runtime failures due to data
  reorganizations.
  
  USERS AFFECTED:
  Users of IPA at -O5 or -qipa=level=2.
  

Problem conclusion

• The issue has been fixed.
  

Temporary fix

Comments

APAR Information

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

  IV20667

• 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 PSN IV20667

     UP06/09/13