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Re: ifcvt/crossjump patch: Fix PR 42496, 21803


> Here's a new patch.  A testcase is included; as I mentioned before this
> triggers quite frequently.  This is PR44374.
>
> I've moved and reused code from dead_or_predicable for a new function
> can_move_insns_across.  The tests in dead_or_predicable were still
> somewhat ad-hoc, after the patch I believe it's using the exact
> necessary and sufficient conditions for moving code.

I'll look into it tomorrow.  Btw, would you mind taking a look at the audit 
trail of PR rtl-opt/44484?  TIA.

-- 
Eric Botcazou


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