> Yes, the binary size is 8-10% smaller. Unfortunately there are no performance > improvements. > > LTO+PGO-disable-plugin: > -rwxr-xr-x 1 markus markus 15025568 Mar 25 15:49 cc1 > -rwxr-xr-x 1 markus markus 16198584 Mar 25 15:49 cc1plus > -rwxr-xr-x 1 markus markus 13907328 Mar 25 15:49 lto1 > -rwxr-xr-x 4 markus markus 492360 Mar 25 15:49 c++ > -rwxr-xr-x 1 markus markus 488240 Mar 25 15:49 cpp > -rwxr-xr-x 3 markus markus 488216 Mar 25 15:49 gcc > > Firefox: > LTO+PGO-disable-plugin: 4590.55s user 273.70s system 343% cpu 23:34.65 total > > kernel: > LTO+PGO-disable-plugin: > 344.11s user 23.59s system 322% cpu 1:54.08 total 340.94s user 23.65s system 326% cpu 1:51.56 total 339.66s user 23.41s system 329% cpu 1:50.09 total Interesting, I was able to get faste LTO+PGO compile times than non-LTO,PGO. I however did testng only on combine.c compliation, so not very scientific. There are some cases FDO information is not streamed well in all cases. I will post patch for that later today. Perhaps it will make situation bit better. Honza
