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From: "asolokha at gmx dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/107300] New: ICE: verify_ssa failed (error:
 virtual definition of statement not up to date)
Date: Tue, 18 Oct 2022 03:33:26 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: ice-on-valid-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: asolokha at gmx dot com
X-Bugzilla-Status: UNCONFIRMED
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X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107300

            Bug ID: 107300
           Summary: ICE: verify_ssa failed (error: virtual definition of
                    statement not up to date)
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: asolokha at gmx dot com
  Target Milestone: ---

gcc 13.0.0 20221016 snapshot (g:6366e3e8847af98d4728d55951534769d034d02a) I=
CEs
when compiling the following testcase, reduced from
gcc/testsuite/gcc.c-torture/execute/pr81281.c, w/ -O2 -fipa-cp-clone
-funreachable-traps -fno-inline:

void
bar (int x, int y)
{
  if (x)
    __builtin_unreachable ();

  if (y)
    __builtin_abort ();
}

void
foo (void)
{
  bar (0, 0);
}

% gcc-13 -O2 -fipa-cp-clone -funreachable-traps -fno-inline -c bppprfmm.c
bppprfmm.c: In function 'bar.constprop':
bppprfmm.c:2:1: error: virtual definition of statement not up to date
    2 | bar (int x, int y)
      | ^~~
__builtin_trap ();
during GIMPLE pass: fixup_cfg
bppprfmm.c:2:1: internal compiler error: verify_ssa failed
0x1155fd5 verify_ssa(bool, bool)
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/tr=
ee-ssa.cc:1211
0xe0737d execute_function_todo
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/pa=
sses.cc:2098
0xe077ae execute_todo
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221016/work/gcc-13-20221016/gcc/pa=
sses.cc:2145=