Re: Who broke bootstrap!

[Steve Kargl <sgk at troutmask dot apl dot washington dot edu>]

On Sat, Aug 30, 2008 at 03:24:08PM +0200, Eric Botcazou wrote:
> > On i386-unknown-freebsd6.3 (instead of 8.0) I am getting the following
> > for SVN revision 139789 and since 2008-08-25 21:00 UTC at least:
> >
> > /files/pfeifer/gcc/i386-unknown-freebsd6.3/sys-include -g -O2 -O2  -g -O2
> > -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes
> > -Wmissing-prototypes -Wcast-qual -Wold-style-definition  -isystem ./include
> >   -fPIC -pthread -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2
> > -D__GCC_FLOAT_NOT_NEEDED   -I. -I. -I../.././gcc
> > -I/sw/test/GCC/trunk/libgcc -I/sw/test/GCC/trunk/libgcc/.
> > -I/sw/test/GCC/trunk/libgcc/../gcc -I/sw/test/GCC/trunk/libgcc/../include
> > -o _muldi3.o -MT _muldi3.o -MD -MP -MF _muldi3.dep -DL_muldi3 -c
> > /sw/test/GCC/trunk/libgcc/../gcc/libgcc2.c \
> > /sw/test/GCC/trunk/libgcc/../gcc/libgcc2.c: In function '__muldi3':
> > /sw/test/GCC/trunk/libgcc/../gcc/libgcc2.c:566: internal compiler error:
> > Segmentation fault: 11
> > Please submit a full bug report,
> > with preprocessed source if appropriate.
> > See <http://gcc.gnu.org/bugs.html> for instructions.
> > gmake[3]: *** [_muldi3.o] Error 1
> > gmake[3]: Leaving directory
> 
> i586-linux is broken in exactly the same way.  gimple.c:gimple_build_asm_vec 
> is miscompiled at -O2 -fomit-frame-pointer by regalloc/reload because of 
> inconsistent elimination offsets at a block boundary.  It's the IRA merge.
> 
> I'd suggest opening a PR, I'll attach a reduced testcase and the analysis.
> 


I've opened PR 37296 for this problem.

-- 
Steve