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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/106433] [13 Regression] ICE in
 vect_transform_loops, at tree-vectorizer.cc:1032
Date: Wed, 26 Oct 2022 16:39:17 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 13.0
X-Bugzilla-Keywords: ice-on-valid-code, openmp
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106433

--- Comment #2 from Arseny Solokha <asolokha at gmx dot com> ---
JFTR, I believe I can reproduce the same issue on x86_64 w/ the current gcc
13.0.0 20221023 (g:0e37fd4dc74c1db99cdc7d71ef378e1221253c6f) snapshot:

int m;
int *p;

__attribute__ ((simd)) int
bar (int x)
{
  if (x)
    {
      if (m < 1)
        for (m =3D 0; m < 1; ++m)
          ++x;

      p =3D &x;

      for (;;)
        ++m;
    }

  return 0;
}

__attribute__ ((simd)) int
foo (int x)
{
  return bar (x);
}

% x86_64-unknown-linux-gnu-gcc-13 -O2 -c rf5yfvga.c
during GIMPLE pass: vect
rf5yfvga.c: In function 'foo.simdclone.0':
rf5yfvga.c:23:1: internal compiler error: in vect_transform_loops, at
tree-vectorizer.cc:1032
   23 | foo (int x)
      | ^~~
0x7ac573 vect_transform_loops
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221023/work/gcc-13-20221023/gcc/tr=
ee-vectorizer.cc:1032
0x11dd81f try_vectorize_loop_1
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221023/work/gcc-13-20221023/gcc/tr=
ee-vectorizer.cc:1153
0x11dd81f try_vectorize_loop
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221023/work/gcc-13-20221023/gcc/tr=
ee-vectorizer.cc:1183
0x11ddbd4 execute
=20=20=20=20=20=20=20
/var/tmp/portage/sys-devel/gcc-13.0.0_p20221023/work/gcc-13-20221023/gcc/tr=
ee-vectorizer.cc:1299=