On Fri, 1 Sep 2023, Richard Biener wrote:

The value of .CLZ (0) is undefined then.  I belive your analysis is correct in
that both 63 - _35 might overflow and that dom3 (thus ranger) mis-computes
the range for _35.  I wonder why we don't elide _36 ? _31 : 1 with that info
(possibly no range-op for .CLZ?), of course it would be wrong to do so.

Can you open a bugreport please?

PR 111280.

   /Krister

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