https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116684
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |fxue at os dot
amperecomputing.com
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Since the reduction opportunity is in the unrolled scalar inner loop we'd have
to know how DOT_PROD combines lanes which we do not specify but instead
expect the whole vector to be reduced to a single lane.
I think Feng works on related areas, not sure whether exactly covering this
one.
Implementation wise this is a (SLP) pattern to recognize.
