Some regressions from the dataflow merge

[Seongbae Park (박성배, 朴成培)]

On 6/14/07, Richard Guenther <rguenther@suse.de> wrote:
> On Wed, 13 Jun 2007, Kenneth Zadeck wrote:
>
> > Richard Guenther wrote:
> > > On Tue, 12 Jun 2007, Richard Guenther wrote:
> > >
> > >
> > >> On ia64 SPEC2000 I see fma3d and applu now miscompare.
> > >>
> > >
> > > On x86_64 186.wupwise ICEs with -O2 -ffast-math and FDO:
> > >
> > > /gcc/spec/sb-haydn-fdo-64/x86_64/install-200706120559/bin/gfortran -c -o
> > > zscal.o        -fprofile-use         -O2 -ffast-math  zscal.f
> > > Error from fdo_make_pass2 'specmake -j2 FDO=PASS2 build 2>
> > > fdo_make_pass2.err | tee fdo_make_pass2.out':
> > > zgemm.f: In function 'zgemm':
> > > zgemm.f:413: internal compiler error: in remove_insn, at emit-rtl.c:3597
> > > Please submit a full bug report,
> > > with preprocessed source if appropriate.
> > > See <URL:http://gcc.gnu.org/bugs.html> for instructions.
> > >
> > > Likewise for 176.gcc:
> > >
> > > combine.c: In function 'simplify_comparison':
> > > combine.c:9697: internal compiler error: in remove_insn, at
> > > emit-rtl.c:3597
> > > Please submit a full bug report,
> > > with preprocessed source if appropriate.
> > > See <URL:http://gcc.gnu.org/bugs.html> for instructions.
> > > specmake: *** [combine.o] Error 1
> > >
> > > Richard.
> > >
> > Richard,
> >
> > did these two regression go away?  We committed a change to gcse that
> > should have fixed this bug.
>
> These two are gone now.  The ia64 miscompares still are there.

I'm looking at it. It is either a scheduler problem,
or some other problem downstream triggered by the scheduler.
However, I'm having hard time adding fine-grained dbg_cnt to our scheduler
- do you know who might be interested in adding insn level
dbg_cnt in the scheduler ? Current dbg_cnt (sched_insn) causes ICE :(
-- 
#pragma ident "Seongbae Park, compiler, http://seongbae.blogspot.com"