> I plan to commit it shortly (i am just slowly progressing through the > bugreports and TODOs cumulated) > - indeed for bigger apps and edit/relink cycle it is an life saver ;)
I haven't tested exactly around this, but I see a ~10s (~5%) improved kernel LTO build time going from 4.9-20140209 to 20140220 Also major faults went down somewhat. gcc49 gcc version 4.9.0 20140209 (experimental) (GCC) real=178.91 user=1829.87 system=125.76 share=1093%% maxrss=1231580 ins=37848 outs=7852280 mfaults=49741854 waits=151528 gcc49 gcc version 4.9.0 20140220 (experimental) (GCC) real=168.90 user=1824.20 system=127.04 share=1155%% maxrss=1231996 ins=448 outs=7808584 mfaults=49257032 waits=136755 -Andi