[Bug tree-optimization/95327] New: [11 Regression] ICE in vect_get_constant_vectors, at tree-vect-slp.c:3655

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95327

            Bug ID: 95327
           Summary: [11 Regression] ICE in vect_get_constant_vectors, at
                    tree-vect-slp.c:3655
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: rguenth at gcc dot gnu.org
  Target Milestone: ---
              Host: x86_64-linux-gnu
            Target: ppc64-linux-gnu

I see the following ICE:

$ ./xgcc -B. /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/vect/pr33369.c
-mpower9-vector -O3 -c
during GIMPLE pass: vect
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/vect/pr33369.c: In function
‘f’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/vect/pr33369.c:12:1: internal
compiler error: in vect_get_constant_vectors, at tree-vect-slp.c:3655
   12 | f (POINT * ptBuf)
      | ^
0x152b405 vect_get_constant_vectors
        /home/marxin/Programming/gcc2/gcc/tree-vect-slp.c:3655
0x152bfbf vect_get_slp_defs(vec_info*, _slp_tree*, vec<vec<tree_node*, va_heap,
vl_ptr>, va_heap, vl_ptr>*, unsigned int)
        /home/marxin/Programming/gcc2/gcc/tree-vect-slp.c:3887
0x14c0380 vect_get_vec_defs(vec_info*, tree_node*, tree_node*, _stmt_vec_info*,
vec<tree_node*, va_heap, vl_ptr>*, vec<tree_node*, va_heap, vl_ptr>*,
_slp_tree*)
        /home/marxin/Programming/gcc2/gcc/tree-vect-stmts.c:1636
0x14d0405 vectorizable_shift
        /home/marxin/Programming/gcc2/gcc/tree-vect-stmts.c:5894
0x14e359b vect_transform_stmt(vec_info*, _stmt_vec_info*,
gimple_stmt_iterator*, _slp_tree*, _slp_instance*)
        /home/marxin/Programming/gcc2/gcc/tree-vect-stmts.c:11176
0x152d23f vect_schedule_slp_instance
        /home/marxin/Programming/gcc2/gcc/tree-vect-slp.c:4235
0x152ca59 vect_schedule_slp_instance
        /home/marxin/Programming/gcc2/gcc/tree-vect-slp.c:4127
0x152d843 vect_schedule_slp(vec_info*)
        /home/marxin/Programming/gcc2/gcc/tree-vect-slp.c:4359
0x150a989 vect_transform_loop(_loop_vec_info*, gimple*)
        /home/marxin/Programming/gcc2/gcc/tree-vect-loop.c:8753
0x153639c try_vectorize_loop_1
        /home/marxin/Programming/gcc2/gcc/tree-vectorizer.c:988
0x1536638 try_vectorize_loop
        /home/marxin/Programming/gcc2/gcc/tree-vectorizer.c:1044
0x1536812 vectorize_loops()
        /home/marxin/Programming/gcc2/gcc/tree-vectorizer.c:1125
0x13aa111 execute
        /home/marxin/Programming/gcc2/gcc/tree-ssa-loop.c:414
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