Re: [PATCH] avoid infinite loop during simplification

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On Sat, Aug 12, 2017 at 10:22 AM, Luc Van Oostenryck
<luc.vanoostenryck@xxxxxxxxx> wrote:
> uh no.
> It's exactly how it's already working now.
> But it's exactly what is the problem when something
> silly, caused by an internal bug, change at *each*
> cycle and this it's what this patch avoid.

If there is change at each cycle then the change
flag will not help. I haven't seen those dead loop
so I did not know what is the nature of those.
I assume there is also other kind of deadloop
if we think there is some thing can CSE but no
actual change to the CFG.

>
> Of course, there is plenty of ways to do the same
> or something similar or something which will have
> the same result. This patch is just a very simple,
> no non-sense way to do it.
>

Sure. It is simple enough.

Chris
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