Fixes are available
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
XL C/C++ for Blue Gene/Q Fix Pack 5 (August 2013 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 6 (November 2013 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 7 (February 2014 Update) for 12.1
Closed as program error.
When compiling a large application with ipa/pdf, the resulting exe had missing aliasing information leading to incorrect output. It is narrowned down to this sequence of code: 816: L1Z gr1504=#BIT_@2OLshd.pbrudi9D<id804:d0:l1>(gr1501,0) 2951,49726,49704 0: DIRCTIV issue_cycle,6,1009 49726,56279,2951 0: DIRCTIV issue_cycle,5,1 56279,2948,49726 813: L8 *gr1503=(__uAB_TYPE).pbagXXX@0.rns95.(gr3,0) 2948,2949,56279 813: ST8 @2OLshd.pbrudi9D(gr1501,0)=gr1503 2949,2950,2948 the first and last instructions have been reordered by the scheduler but they have the same address. These two dr's are not aliased.
USERS AFFECTED: Users of IPA at -O4 and above may be affected by this issue. PROBLEM DESCRIPTION: The issue is that the compiler generates missing aliasing information with IPA/PDF.
The compiler generates correct aliasing information needed for IPA outlining.
Reported component name
XL C/C++ FOR BG
Reported component ID
Last modified date
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fixed component name
XL C/C++ FOR BG
Fixed component ID
Applicable component levels
RC10 PSN IV22789