Specialise for_each_while for multipass + bounded sequences #181
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From #173, it seems like the existing formulation of
for_each_while()
using anis_last()
end check appears to get in the way of compiler auto-vectorisation in some circumstances.For bounded + multipass sequences, we can instead save the end cursor as a local variable and perform an end check against that. This appears to make Clang more eager to vectorise the code in the loop, so let's do it.