http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50182
--- Comment #15 from davidxl <xinliangli at gmail dot com> 2011-10-21 23:02:16 UTC --- (In reply to comment #14) > (In reply to comment #13) > > David, it looks like we are seeing different things with v4.7... See my > > comment 11 - I am still observing the slowdown. Do you have access to > > v4.1 and v4.6? Could you try reproducing my test please? > > Sorry for the delay -- I am pretty swamped these days (till mid October). I > will try to look at the problem more then. > > David I still can not reproduce the problem with trunk compiler: rv=4282167296 test description absolute operations ratio with number time per second test0 0 "int8_t constant add" 1.09 sec 1467.89 M 1.00 Total absolute time for int8_t constant folding: 1.09 sec Can you attach the output of -v and the assembly file with -fverbose-asm -dA and the optimized dump file with option -fdump-tree-optimized-blocks using trunk compiler? thanks, David
