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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/111822] [12/13/14 Regression] during RTL pass:
 lr_shrinkage ICE: in operator[], at vec.h:910 with -O2 -m32
 -flive-range-shrinkage -fno-dce -fnon-call-exceptions
Date: Sun, 22 Oct 2023 23:50:58 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: rtl-optimization
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: EH, ice-on-valid-code, needs-bisection
X-Bugzilla-Severity: normal
X-Bugzilla-Who: pinskia at gcc dot gnu.org
X-Bugzilla-Status: NEW
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X-Bugzilla-Priority: P3
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X-Bugzilla-Target-Milestone: 12.4
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111822

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
   Last reconfirmed|                            |2023-10-22
             Status|UNCONFIRMED                 |NEW
           Keywords|                            |needs-bisection

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

Note changing:
```
  while (oldtop)
    Null();
```
to:
```
  if (oldtop)
    while (true)
      Null();
```

to get the same IR coming into expand, still passes in GCC 11.4.0.=