------- Comment #17 from luisgpm at linux dot vnet dot ibm dot com 2009-05-15 02:16 ------- Actually, 64-bit is affected too, but not with the "power6x" tuning i was using. With "-mcpu=power6" i can reproduce the problem.
The problem seems to be a couple load instructions that are being pushed up from a different basic block, and this results in a Load-hit-store hazard, since we've pushed the load too close to a store to the same address. I'm not sure this is a direct consequence of changes in the gimple code. Would you know Matz? I'll continue digging... Luis -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39976
