[Bug rtl-optimization/37296] [4.4 Regression] Bootstrap failure compiling libgcc

[ebotcazou at gcc dot gnu dot org]

------- Comment #15 from ebotcazou at gcc dot gnu dot org  2008-09-01 21:46 -------
> checking for i386-unknown-freebsd8.0-gcc... /usr/home/kargl/gcc/obj/./gcc/xgcc
> -B/usr/home/kargl/gcc/obj/./gcc/
> -B/usr/home/kargl/work/i386-unknown-freebsd8.0/bin/
> -B/usr/home/kargl/work/i386-unknown-freebsd8.0/lib/ -isystem
> /usr/home/kargl/work/i386-unknown-freebsd8.0/include -isystem
> /usr/home/kargl/work/i386-unknown-freebsd8.0/sys-include
> checking for suffix of object files... configure: error: in
> `/usr/home/kargl/gcc/obj/i386-unknown-freebsd8.0/libgcc':
> configure: error: cannot compute suffix of object files: cannot compile
> See `config.log' for more details.
> gmake[2]: *** [configure-stage2-target-libgcc] Error 1
> gmake[2]: Leaving directory `/usr/home/kargl/gcc/obj'
> gmake[1]: *** [stage2-bubble] Error 2
> gmake[1]: Leaving directory `/usr/home/kargl/gcc/obj'
> gmake: *** [bootstrap] Error 2

It's the same issue as the __muldi3 thing.  cgraphbuild.c:rebuild_cgraph_edges
is miscompiled at -O2 -fomit-frame-pointer by regalloc/reload because of some
problem with elimination offsets.  I think -fomit-frame-pointer is somewhat
broken since the IRA merge.  I'll attach testcases tomorrow.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37296