Re: [PR64164] drop copyrename, integrate into expand

[Alexandre Oliva <aoliva@redhat.com>]

On Aug 19, 2015, Alexandre Oliva <aoliva@redhat.com> wrote:

> I'm having some difficulty getting access to an ia64 box ATM, and for
> ada bootstraps, a cross won't do, so...  if you still have that build
> tree around, any chance you could recompile par.o with both stage1 and
> stage2, with -fdump-rtl-expand-details, and email me the compiler dump
> files?

Thanks!

In the mean time, I have been able to duplicate the problem myself.  As
you say, it is triggered by -gtoggle.  However, it has nothing
whatsoever to do with the recent patches I installed.  At most they
expose some latent problem in the scheduler.

I have verified in the expand dumps that both the gimple and the rtl
representation in the relevant parts of the code are identical, except
for the presence of debug stmts and insns.  Indeed, compiling with
-fno-schedule-insns{,2}, no differences arise.

-- 
Alexandre Oliva, freedom fighter    http://FSFLA.org/~lxoliva/
You must be the change you wish to see in the world. -- Gandhi
Be Free! -- http://FSFLA.org/   FSF Latin America board member
Free Software Evangelist|Red Hat Brasil GNU Toolchain Engineer