Re: [15/23] recog: Add a validate_change_xveclen function

On 11/13/20 1:19 AM, Richard Sandiford via Gcc-patches wrote: > A later patch wants to be able to use the validate_change machinery > to reduce the XVECLEN of a PARALLEL. This should be more efficient > than allocating a separate PARALLEL at a possibly distant memory > location, especially

[15/23] recog: Add a validate_change_xveclen function

A later patch wants to be able to use the validate_change machinery to reduce the XVECLEN of a PARALLEL. This should be more efficient than allocating a separate PARALLEL at a possibly distant memory location, especially since the new PARALLEL would be garbage rtl if the new pattern turns out not