[Bug tree-optimization/114736] New: ICE during SLP pass with gfortran-13 -O3 -mcpu=neoverse-v2

[prathamesh3492 at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114736

            Bug ID: 114736
           Summary: ICE during SLP pass with gfortran-13 -O3
                    -mcpu=neoverse-v2
           Product: gcc
           Version: 13.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: prathamesh3492 at gcc dot gnu.org
  Target Milestone: ---

Hi,
For the following test-case:

SUBROUTINE MY_ROUTINE (N, A, B )
IMPLICIT NONE
INTEGER,   INTENT(IN)    :: N
COMPLEX,   INTENT(IN)    :: A(N)
COMPLEX,   INTENT(OUT)   :: B(N)
INTEGER                  :: II
B(:) = (1.,0.)
DO II = 1, N-1
    B(II) = A(N-II+1) / A(N-II)
ENDDO
END SUBROUTINE MY_ROUTINE

Compiling with gfortran-13 -O3 -mcpu=neoverse-v2 results in following ICE:

during GIMPLE pass: slp
dump file: t5.f90.180t.slp1
t5.f90:1:21:

    1 | SUBROUTINE MY_ROUTINE (N, A, B )
      |                     ^
internal compiler error: in create_partitions, at tree-vect-slp.cc:4226
0x12a4aef vect_optimize_slp_pass::create_partitions()
        ../../gcc/gcc/tree-vect-slp.cc:4226
0x12a617b vect_optimize_slp_pass::run()
        ../../gcc/gcc/tree-vect-slp.cc:5642
0x12a626b vect_optimize_slp(vec_info*)
        ../../gcc/gcc/tree-vect-slp.cc:5666
0x12abdef vect_optimize_slp(vec_info*)
        ../../gcc/gcc/tree-vect-slp.cc:7486
0x12abdef vect_slp_analyze_bb_1
        ../../gcc/gcc/tree-vect-slp.cc:7450
0x12abdef vect_slp_region
        ../../gcc/gcc/tree-vect-slp.cc:7538
0x12adc0b vect_slp_bbs
        ../../gcc/gcc/tree-vect-slp.cc:7746
0x12adf57 vect_slp_function(function*)
        ../../gcc/gcc/tree-vect-slp.cc:7847
0x12b949f execute
        ../../gcc/gcc/tree-vectorizer.cc:1529

Thanks,
Prathamesh