Re: x86-64 bootstrap broken (was Re: [PATCH] tree level if-conversion for vectorizer)

[Devang Patel <dpatel at apple dot com>]

On Sep 4, 2004, at 1:49 PM, Devang Patel wrote:

> On Sep 4, 2004, at 1:39 PM, Jan Hubicka wrote:
>
> > > Would it be possible to send me preprocessed source ?
> > > I do not have access to x86-64 box and ppc-linux box
> > > in the lab has decided to not respond at the moment.
> >
> > Well, the problem is that the same source works fine with stage1
> > compiler and crash in stage2, so what we are facing is an
> > misscompilation of gcc itself.
>
> When -fdump-tree-ifcvt-stats is enabled, GCC emits
> "Applying if-conversion" string in status file (.ifcvt).
> It does not if-convert many loops, so it would be helpful
> you can identify mis-compiled object file.
>
> Meanwhile I'll try if I can reproduce it on powerpc-darwin.
> I have started couple of bootstrap. Lets see. I'll be
> offline couple for hours.

I checked out fresh sources as of today morning. Top of ChangeLog...

      1 2004-09-04  H.J. Lu  <hongjiu.lu@intel.com>
      2
      3         * configure: Regenerated.
      4
      5 2004-09-04  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
      6
      7         * tree.c (save_expr): No longer TREE_READONLY.
      8
      9         * fold-const.c (operand_equal_p): Remove code to allow 
null ARG0/1.
     10         Define locals macros OP_SAME and OP_SAME_WITH_NULL and 
use throughout.
     11
     12 2004-09-04  Jan Hubicka  <jh@suse.cz>


	....

It bootstraps just fine on powerpc-darwin.
It'd be helpful if someone tries bootstrap on broken platform by 
disabling
just if-conversion not entire optimization.

Thanks,
-
Devang