https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106902

--- Comment #15 from Alexander Monakov <amonakov at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #14)
> I can't
> seem to reproduce any vectorization for your smaller example though.

My small C samples omit some detail as they were meant to illustrate what
happened in the IR. Is that a problem?

By the way, I noticed that tree-ssa-math-opts incorrectly handles
-ffp-contract:

  if (FLOAT_TYPE_P (type)
      && flag_fp_contract_mode == FP_CONTRACT_OFF)
    return false;

It should be 'flag_fp_contract_mode != FP_CONTRACT_FAST' instead (the pass
doesn't have any idea about expression boundaries). It dates back to
g:1694907238eb

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