https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66675

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2015-06-25 00:00:00         |2021-8-19

--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Maybe if some match patterns dealing with BFRs and vector_csts is needed

Something like:
(for binary_op (...)
 (simplify
  (BFR (binary_op:s VECTOR_CST@0 @1) ...)
  (binary_op (BFR @0 ...) (BFR @1 ...)))
 (simplify
  (BFR (binary_op:s @0 VECTOR_CST@1 ) ...)
  (binary_op (BFR @0 ...) (BFR @1 ...)))
)

(for unary_op (...)
 (simplify
  (BFR (unary_op:s @1) ...)
  (unary_op (BFR @0 ...)))

This pushes the BFR as far back as possible and will solve this testcase but I
am not 100% sure it will solve all.

Note BFR might be subvectors and not just a scalar and such.

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