C(XX)FLAGS

I've just started recompiling world (following a recompile of system) using the flags recommended by Duncan on the gentoo-amd64 mailing list (appended at the end of the post). I know there'll be a problem with one of the packages in system but other than that I'm curious to know what will happen with the other 734 packages I have in world (up to '7' thus far with no problem (though that's hardly surprising as it'll still be doing system packages)).


CFLAGS="-march=k8 -Os -pipe -frename-registers -fweb -freorder-blocks -freorder-blocks-and-partition -combine -funit-at-a-time -ftree-pre -fgcse-sm -fgcse-las -fgcse-after-reload -fmerge-all-constants"
CXXFLAGS="-march=k8 -Os -pipe -frename-registers -fweb -freorder-blocks -funit-at-a-time -ftree-pre -fgcse-sm -fgcse-las -fgcse-after-reload -fmerge-all-constants"