http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53538
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |INVALID
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-05-31
16:24:43 UTC ---
They are defined by the ARM compiler which has them documented here:
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0491c/BABJFCGC.html
With either -funroll-loops or -O3 (which enables sometimes full unrolling), the
compiler is able to figure out the argument j is a constant as it duplicates it
4 times.
