[Bug target/112330] [14 Regression] LoongArch: LTO bootstrap failure with GAS 2.41

[xry111 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112330

--- Comment #6 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
(In reply to chenglulu from comment #5)
> (In reply to Xi Ruoyao from comment #4)
> > (In reply to chenglulu from comment #3)
> > > (In reply to Xi Ruoyao from comment #1)
> > > > (In reply to Xi Ruoyao from comment #0)
> > > > 
> > > > > I guess the easiest solution is raising the minimal GAS requirement of
> > > > > bootstrapping GCC 14 on LoongArch to 2.42.
> > > > 
> > > > Another solution might be default to -mno-relax if GAS is 2.41, but I'm not
> > > > sure if it's enough.
> > > 
> > > This issue really doesn't happen after adding -mno-relax, but is it really
> > > necessary to judge the version of binutils because of this?
> > 
> > I'm not sure if -mno-relax is the proper fix.  For now I've reduced the test
> > case to:
> > 
> > a:
> > .rept 100000
> > nop
> > .endr
> > beq $r12, $r13, a
> > 
> > but this still does not work with GAS 2.41 even if -mno-relax.
> 
> If this is the assembly code compiled by gcc, then I think it's a gcc bug,
> although AS shouldn't be an internal error.

The internal error issue is fixed by Binutils commit
f87cf663af71e5d78c8d647fa48562102f3b0615.

I think I've over-simplified the test case.  GCC does not generate something
like this.