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From: "amacleod at redhat dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/100081] [11 Regression] Compile time hog in
 irange since r11-4135-ge864d395b4e862ce
Date: Fri, 16 Apr 2021 18:39:13 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100081

Andrew Macleod <amacleod at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |amacleod at redhat =
dot com

--- Comment #9 from Andrew Macleod <amacleod at redhat dot com> ---
Created attachment 50619
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D50619&action=3Dedit
proposed fix

I've added a depth limited for logical combinations.   In this patch its se=
t to
6.. I'm going to try running it against various scenarios to make sure it
doesn't miss anything we do want... and of course I'll bootstrap and regtest
it.

If you want to try it, this should resolve the issue.=