[flang] Enable loop-versioning for slices. #120344
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Loops resulting from array expressions like array(:,i) may be versioned for the unit stride of the innermost dimension, when the initial array is an assumed-shape array (which are contiguous in many Fortran programs). This speeds up facerec for about 12% due to further vectorization of the innermost loop produced for the total SUM reduction.
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Loops resulting from array expressions like array(:,i)
may be versioned for the unit stride of the innermost dimension,
when the initial array is an assumed-shape array (which are contiguous
in many Fortran programs).
This speeds up facerec for about 12% due to further vectorization
of the innermost loop produced for the total SUM reduction.