Hi,
I am getting below error with gcc v4.9 building for powerpc target. Looks like GCCv4.9 is doing more optimization than earlier version.
build 31-Jul-2015 02:49:45 powerpc: + TQM834x build 31-Jul-2015 02:49:45 +(TQM834x) (((base + size - 1) >> CSBNDS_EA_SHIFT) & build 31-Jul-2015 02:49:45 +(TQM834x) ^ build 31-Jul-2015 02:49:45 +(TQM834x) board/tqc/tqm834x/tqm834x.c:80:2: note: containing loop build 31-Jul-2015 02:49:45 +(TQM834x) for(cs = 0; cs < 4; ++cs) { build 31-Jul-2015 02:49:45 +(TQM834x) ^ build 31-Jul-2015 02:49:45 w+(TQM834x) board/tqc/tqm834x/tqm834x.c: In function 'initdram': build 31-Jul-2015 02:49:45 w+(TQM834x) board/tqc/tqm834x/tqm834x.c:325:12: warning: iteration 3u invokes undefined behavior [-Waggressive-loop-optimizations]
Regards, Prabhakar