[Bug tree-optimization/108639] [13 Regression] ICE on valid code at -O1 and above: in decompose, at wide-int.h:984 since r13-5578

[aldyh at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108639

Aldy Hernandez <aldyh at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |aldyh at gcc dot gnu.org

--- Comment #5 from Aldy Hernandez <aldyh at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #3)
> Created attachment 54391 [details]
> gcc13-pr108639.patch
> 
> Untested fix.

I think the problem is more fundamental than that.  The equality operator for
irange is not ICEing for the sub-range comparison (which also have different
precision), but is dying in the nonzero mask comparison.