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Re: Fix PR rtl-optimization/28243
Eric Botcazou <ebotcazou@libertysurf.fr> writes:
>> Sorry for dropping the ball here. I would like to push that idea though.
>> The problem I have with your patch is that (IMO) it's just hacking around
>> the problem that 4.1 is not analysing the right live range. The code in
>> the loop simply shouldn't be looking at insns that follow the death of the
>> register.
>
> No real disagreement. Have you (and Roger) enough confidence in what is now
> on mainline? If so, please backport it to the 4.1 branch and I'll back out
> my patch everywhere.
Well, I had to fix one silly oversight (PR 27736), but it's otherwise
been on mainline for a while without other problems. I think it should
be safe enough to backport. But like you, I'm interested to know what
Roger thinks.
Richard