LREF*_PUSH

gauche scheme

又使用例が微妙なのか??と言いつつ試験
ざくっと以下のカンジなソレを確認

gosh> (disasm (lambda (a) (lambda (f) (f a))))
main_code (name=#f, code=0x80d68a0, size=3, const=1, stack=0):
args: #f
     0 CLOSURE #<lambda 0>      ; (lambda (f) (f a))
     2 RET 
internal_closure_0 (name=#f, code=0x80d68b0, size=4, const=0 stack=4):
args: #f
     0 LREF10-PUSH              ; a
     1 LREF0                    ; f
     2 TAIL-CALL(1)             ; (f a)
     3 RET 
#<undef>
gosh> (disasm (lambda (a b) (a b)))
main_code (name=#f, code=0x81f1d00, size=4, const=0, stack=4):
args: #f
     0 LREF0-PUSH               ; b
     1 LREF1                    ; a
     2 TAIL-CALL(1)             ; (a b)
     3 RET 
#<undef>
gosh>

うーん。LREF_PUSH はどんなケイスで出てくるのか。