[Bug tree-optimization/104267] New: [12 Regression] ICE in vect_schedule_slp_node, at tree-vect-slp.c:7144 since r12-5613-g32ede1083fad4b68

[marxin at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104267

            Bug ID: 104267
           Summary: [12 Regression] ICE in vect_schedule_slp_node, at
                    tree-vect-slp.c:7144 since r12-5613-g32ede1083fad4b68
           Product: gcc
           Version: 12.0
            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: richard.sandiford at arm dot com
  Target Milestone: ---

I see the following ICE:

$ gfortran /home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/pr91003.f90
-Ofast -mavx512f -fsignaling-nans -c
f951: Warning: ‘-fassociative-math’ disabled; other options take precedence
during GIMPLE pass: vect
/home/marxin/Programming/gcc/gcc/testsuite/gfortran.dg/pr91003.f90:3:20:

    3 |       SUBROUTINE FOO(N, A, B, C, D, E, F, G)
      |                    ^
internal compiler error: in vect_schedule_slp_node, at tree-vect-slp.cc:7172
0x7e39cd vect_schedule_slp_node
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.cc:7172
0x1282b33 vect_schedule_scc
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.cc:7470
0x12828b1 vect_schedule_scc
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.cc:7451
0x12828b1 vect_schedule_scc
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.cc:7451
0x12828b1 vect_schedule_scc
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.cc:7451
0x12828b1 vect_schedule_scc
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.cc:7451
0x12828b1 vect_schedule_scc
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.cc:7451
0x12828b1 vect_schedule_scc
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.cc:7451
0x128317f vect_schedule_slp(vec_info*, vec<_slp_instance*, va_heap, vl_ptr>
const&)
        /home/marxin/Programming/gcc/gcc/tree-vect-slp.cc:7587
0x1258234 vect_transform_loop(_loop_vec_info*, gimple*)
        /home/marxin/Programming/gcc/gcc/tree-vect-loop.cc:9753
0x128f5dd vect_transform_loops
        /home/marxin/Programming/gcc/gcc/tree-vectorizer.cc:1003
0x128f5dd try_vectorize_loop_1
        /home/marxin/Programming/gcc/gcc/tree-vectorizer.cc:1133
0x128f5dd try_vectorize_loop
        /home/marxin/Programming/gcc/gcc/tree-vectorizer.cc:1162
0x128fe14 execute
        /home/marxin/Programming/gcc/gcc/tree-vectorizer.cc:1278

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