On Fri, Jan 15, 2016 at 06:00:10PM +0000, Richard Sandiford wrote: > Calling redirect_edge_var_map_empty after each pass was slowing things > down because hash_table::empty () cleared all slots even if the hash > table was already empty. > > Tested on x86_64-linux-gnu, where it gives a 1% compile time improvement > for fold-const.ii at -O and -O2. OK to install?
I can't ok, but it looks good to me. Trev
