[Bug tree-optimization/122475] [16 Regression] ICE in the vectorize with RVV and SVE

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122475

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |tnfchris at gcc dot gnu.org

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Same cause I think.

  /* For double reductions, and for SLP reductions with a neutral value,
     we construct a variable-length initial vector by loading a vector
     full of the neutral value and then shift-and-inserting the start
     values into the low-numbered elements.  */
  if ((double_reduc || neutral_op)
      && !nunits_out.is_constant ()
      && (SLP_TREE_LANES (slp_node) != 1 && !reduc_chain) 
      && !operand_equal_p (neutral_op, vect_phi_initial_value (reduc_def_phi))

neutral_op can be NULL