------- Comment #47 from paolo dot carlini at oracle dot com 2010-09-02 14:10 ------- Ok, Paolo, let's give this small change a try. About PCHs saving time during make check, that seems uncontroversial, I can provide some numbers later, but if you just try removing the generated PCHs by hand, then run again make check inside libstdc++-v3/testsuite, you will certainly notice a big difference, I would guess close to 2x.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40974
