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[Bug tree-optimization/71084] [7 Regression] ICE in compute_dominance_frontiers_1 (cfganal.c:1302)


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71084

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Ilya Enkovich from comment #5)
> (In reply to Richard Biener from comment #3)
> > fwprop_init calcuates dominator info so it's likely df that runs cfg-cleanup
> > and doesn't expect it to wreck dominator info.
> > 
> > Probably rightfully so.
> 
> So should we improve cse_cfg_altered  computation taking cfg_cleanup calls
> into account or free dominance info in cfg_cleanup instead?

The former.

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