[Bug tree-optimization/92596] [10 Regression] ICE in exact_div, at poly-int.h:2162 since r278406

[rsandifo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92596

--- Comment #10 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> ---
Since it's been a while since the last update: I've been trying
various non-invasive ways of fixing it, but even if they seem to be
strict improvements, they still leave open obvious traps of a similar
nature for later.

I think we'll just have to get rid of the special deferred handling
of boolean_type_node and stop computing so much of this stuff on
the fly.  I'm now testing a series of patches to do that.