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21:24:44
stassats
managed to do (declare (fixnum x) ((and unsigned-byte fixnum) n)) (ldb (byte 16 0) (ash x n))
21:32:16
stassats
have to define a new set of vops, so tedious
21:34:25
stassats
ok, i won't, don't want to roll them back either to the left/right variants
21:35:09
stassats
the explosion of modular vops is bothersome
21:35:53
stassats
is it all just to change their type derivers? could lvar-attached type derivers help here?
21:37:09
stassats
that's beyond the scope of today, but i really should investigate lvar-centered optimizations, it might solve a lot of problems