Hi,
I was a bit surprised when I coded the native versions of rtl-sinstruction,
make-non-immediate I just
assumed that alignement meant 64bit on 64bit platforms. It doesen't in for
example,
(define const
(assemble-program
`((begin-program test-bind-rest)
(assert-nargs-ee/locals 0 2)
(load-constant 0 '(1 2))
(load-constant 1 #(1))
(cons 0 0 1)
(return 0)
(end-program))))
-->
??dissassembles into
;;; ((assert-nargs-ee/locals (op : 20) (expected : 0) (nlocals : 2)))
;;; ((inst))
;;; ((make-non-immediate (op : 52) (dst : 0) (offset : -7) (ip : 20677408)))
;;; ((inst))
;;; ((make-non-immediate (op : 52) (dst : 1) (offset : -31) (ip :
20677320)))
;;; ((inst))
;;; ((cons (op : 74) (dst : 0) (x : 0) (y : 1)))
;;; ((inst))
;;; ((return (op : 5) (src : 0)))
And we see that 20677320 & 8 == 8, hence not 64 bit aligned. Assuming
alignment meant 32bit
the native code works very well!
But would I dear to suggest that we try to keep all non immediates aligned
on 64bit boundaries?
/Stefan
