Re: profiledbootstrap insn-attrtab.c compile taking forever

[R Hill <dirtyepic dot sk at gmail dot com>]

R Hill wrote:
> Richard Guenther wrote:
> > On 7/14/05, Richard Guenther <rguenther@suse.de> 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.
>
> I thought -frename-registers defaulted to disabled now.  On the 4.0 
> branch the manual states it's not enabled by opt switches due to known 
> bugs.  Is it also enabled by -funroll-loops on the branch?

Nevermind, I've just found the relevant discussion. ;P

--de.