https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111901
--- Comment #12 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
> Later in the compilation pipeline, DCE removes insns 6 and 8 as dead code,
> leaving:
>
> _.c.331r.cmpelim:
>
> 10: {x1:SI=asm_operands;clobber [scratch];}
> 12: {x3:SI=asm_operands;clobber [scratch];}
> 13: x1:SI=x1:SI+x3:SI
> 15: NOTE_INSN_DELETED
> 20: x0:SI=x1:SI<<0x1
> 21: use x0:SI
So what about just marking inline asms with memory clobber as having side
effects?
