Dead-code elimination can't remove string copy insns?

[Zack Weinberg]

Diego Novillo <dnovillo@redhat.com> writes:

> On Tue, May 13, 2003 at 09:40:33AM -0700, Zack Weinberg wrote:
>
>> gcc.dg/const-elim-1.c.  On an x86, compile it with -march=i386 -O2;
>> rs6000-ibm-aix5 and arm-elf also show the problem.
>> 
> Yup, tree-ssa handles it.  The original program in GIMPLE form is
> on the left.  The optimized version is on the right (we still
> don't linearize GOTO_EXPRs).

Excellent.  In that case I will not worry about getting const-elim-1.c
to work for all targets on the mainline.  The present situation is not
a regression -- we just weren't testing for dead-constant removal
before.

Could those port maintainers seeing failures for const-elim-1.c please
apply patches to mark it XFAIL for their target?

zw