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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug rtl-optimization/106751] [10/11/12/13 Regression] internal
 compiler error: in purge_dead_edges with inline-asm goto
Date: Thu, 15 Dec 2022 13:10:31 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: changed
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: rtl-optimization
X-Bugzilla-Version: 12.2.0
X-Bugzilla-Keywords: ice-on-valid-code, inline-asm
X-Bugzilla-Severity: normal
X-Bugzilla-Who: jakub at gcc dot gnu.org
X-Bugzilla-Status: NEW
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P2
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: 10.5
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Message-ID: <bug-106751-4-ICfP1isVGS@http.gcc.gnu.org/bugzilla/>
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106751

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|needs-bisection             |
           Priority|P3                          |P2
                 CC|                            |jakub at gcc dot gnu.org
            Summary|internal compiler error: in |[10/11/12/13 Regression]
                   |purge_dead_edges with       |internal compiler error: in
                   |inline-asm goto             |purge_dead_edges with
                   |                            |inline-asm goto
   Target Milestone|---                         |10.5

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Reduced testcase that ICEs on x86_64-linux too (-O2):
int *foo (void);

void
bar (void)
{
  asm goto ("" : : : : lab);
  __builtin_unreachable ();
lab:
  while (1)
    {
      int o;
      asm ("" : "=3Dr" (o) : "g" (1));
      *foo () =3D o;
    }
}
Started with r0-128630-ga3afdbb80906a5553a64f9ba7686a57d2f43f536=