On 7/14/05, Richard Guenther <[EMAIL PROTECTED]> wrote: > > As subject says - on x86_64 it takes a whopping 30 minutes to > compile said with -fprofile-generate!
It's caused by -frename-registers enabled by -funroll-loops. Compiling with -O2 -fno-unroll-loops -fprofile-generate compared to -O2 -fno-unroll-loops -fprofile-generate -frename-registers takes 14 minutes instead of 31. Please consider not enabling -frename-registers for -fprofile-generate. Thanks, Richard.