[PATCH] D69059: [SVE][AArch64] Adding patterns for while intrinsics

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

If you look at SVE loop examples from ARM, they generally have a branch using the flags set by something like a whilelt; we should allow the user to replicate that somehow.  I was thinking you could make them part of the return value, somehow, so the intrinsic returns two values.  Maybe the whole value, or maybe just a boolean for some common use we expect; haven't really thought that part through.

Maybe that's not a good idea, though?  I guess we could let the user write a regular cmp, and have a pass detect that it's redundant, somehow.  Or maybe there's some other similar approach I haven't considered.


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https://reviews.llvm.org/D69059