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From: "doko at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/113169] New: [14 Regression] ICE in in
 vect_peel_nonlinear_iv_init, at tree-vect-loop.cc:9420 on amdgcn-amdhsa
Date: Fri, 29 Dec 2023 10:52:56 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113169

            Bug ID: 113169
           Summary: [14 Regression] ICE in in vect_peel_nonlinear_iv_init,
                    at tree-vect-loop.cc:9420 on amdgcn-amdhsa
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org
  Target Milestone: ---

seen with trunk 20231229 on amdgcn-amdhsa. the offload compiler itself is b=
uilt
with trunk 20231229.


$ cat l64a.i
char _l64a_buf[1];
void _l64a_r() {
  char *ptr;
  int i;
  long tmp;
  ptr =3D _l64a_buf;
  i =3D 0;
  for (; i < 6; ++i) {
    if (tmp =3D=3D 0)
      break;
    *ptr++ =3D tmp >>=3D 6;
  }
}

 build-gcn/gcc/xgcc -Bbuild-gcn/gcc/ -c -march=3Dgfx900 -O2 -fno-builtin l6=
4a.i
during GIMPLE pass: vect
l64a.i: In function '_l64a_r':
l64a.i:2:6: internal compiler error: in vect_peel_nonlinear_iv_init, at
tree-vect-loop.cc:9420
    2 | void _l64a_r() {
      |      ^~~~~~~
0x70fa53 vect_peel_nonlinear_iv_init(gimple**, tree_node*, tree_node*,
tree_node*, vect_induction_op_type)
        ../../src-gcn/gcc/tree-vect-loop.cc:9420
0xf9b415 vect_update_ivs_after_vectorizer
        ../../src-gcn/gcc/tree-vect-loop-manip.cc:2267
0xf9b415 vect_do_peeling(_loop_vec_info*, tree_node*, tree_node*, tree_node=
**,
tree_node**, tree_node**, int, bool, bool, tree_node**)
        ../../src-gcn/gcc/tree-vect-loop-manip.cc:3399
0xf8bd42 vect_transform_loop(_loop_vec_info*, gimple*)
        ../../src-gcn/gcc/tree-vect-loop.cc:11911
0xfc9b9b vect_transform_loops
        ../../src-gcn/gcc/tree-vectorizer.cc:1006
0xfca21d try_vectorize_loop_1
        ../../src-gcn/gcc/tree-vectorizer.cc:1152
0xfca21d try_vectorize_loop
        ../../src-gcn/gcc/tree-vectorizer.cc:1182
0xfca6b4 execute
        ../../src-gcn/gcc/tree-vectorizer.cc:1298
Please submit a full bug report, with preprocessed source (by using
-freport-bug).=