The ARM NEON vclt and vcle instructions are aliases for vcgt and vcge
respectively.
Err, isn't that the other way around ? Ie vclt is an alias for vcge and
vcle is an alias for vcgt ?
Nope - in fact that's how everyone seems to get these particular
instructions wrong. "a < b" is "!(a >= b)", but there's an extra
negation, so you can't use the same instruction for both. However
"a < b" is "b > a", so by swapping operands, you can use the same
instruction.
If I'm remembering Paul's explanation correctly, then binutils
currently has this reversed and tries to encode "a > b" as "b <= a".