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From: "nsz at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/111478] New: [12/13/14 regression] aarch64
 SVE ICE: in compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
Date: Tue, 19 Sep 2023 13:29:39 +0000
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 14.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D111478

            Bug ID: 111478
           Summary: [12/13/14 regression] aarch64 SVE ICE: in
                    compute_live_loop_exits, at tree-ssa-loop-manip.cc:250
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: nsz at gcc dot gnu.org
  Target Milestone: ---

$ cat bug.c
float a, d, e, f, g;
int b, c;
void h() {
  for (; b; b++) {
    for (; c;) {
      float i =3D d =3D i;
    }
    a +=3D f - e * g;
    a +=3D g + e * f;
  }
}


$ gcc -c -O3 -march=3Darmv8-a+sve bug.c
during GIMPLE pass: vect
<source>: In function 'h':
<source>:3:6: internal compiler error: in compute_live_loop_exits, at
tree-ssa-loop-manip.cc:250
    3 | void h() {
      |      ^
0x1168eb4 compute_live_loop_exits
=20=20=20=20=20=20=20
/data/jenkins/workspace/GNU-toolchain/fsf-trunk/src/gcc/gcc/tree-ssa-loop-m=
anip.cc:250
0x1168eb4 add_exit_phis_var
=20=20=20=20=20=20=20
/data/jenkins/workspace/GNU-toolchain/fsf-trunk/src/gcc/gcc/tree-ssa-loop-m=
anip.cc:332
0x1168eb4 add_exit_phis
=20=20=20=20=20=20=20
/data/jenkins/workspace/GNU-toolchain/fsf-trunk/src/gcc/gcc/tree-ssa-loop-m=
anip.cc:393
0x1168eb4 rewrite_into_loop_closed_ssa_1
=20=20=20=20=20=20=20
/data/jenkins/workspace/GNU-toolchain/fsf-trunk/src/gcc/gcc/tree-ssa-loop-m=
anip.cc:606
0x1168eb4 rewrite_into_loop_closed_ssa(bitmap_head*, unsigned int)
=20=20=20=20=20=20=20
/data/jenkins/workspace/GNU-toolchain/fsf-trunk/src/gcc/gcc/tree-ssa-loop-m=
anip.cc:628
0x130a1e8 execute
=20=20=20=20=20=20=20
/data/jenkins/workspace/GNU-toolchain/fsf-trunk/src/gcc/gcc/tree-vectorizer=
.cc:1358
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1=