------- Comment #18 from dann at godzilla dot ics dot uci dot edu 2006-03-03 02:14 ------- (In reply to comment #17) > (In reply to comment #5) > > It's strange that the load(*) does not get optimized, given that it's in the > > same BB as the store that precedes it... > > > > movl %eax, result.1282 > > (*) movl result.1282, %eax > > This is because the copying of the trace is happening at the very end of the > optimization phase so it does not optimized at all.
Right, the copying happens in .bbro (as shown in PR26537). gcc-4.0 did the same kind of copying in .bbro, but it did not generate the redundant mov. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23488
