> The libstdc++-v3 build also doesn't utilize the profiling flags produced > in > a profiledbootstrap or the lto flags produced from an lto-bootstrap. profiledbootstrap/lto-bootstrap is about FDO/LTO while building compiler, not runtime. It would probably make sense for libstdc++-v3 to eventually build the shared lib with LTO, but we need to solve debug info quality issues...
Honza
