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Commit 182d9696 authored by dtc's avatar dtc
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Added explanatory note in move-from-unsigned.

parent d2f0c163
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...@@ -7,7 +7,7 @@ ...@@ -7,7 +7,7 @@
;;; Scott Fahlman or slisp-group@cs.cmu.edu. ;;; Scott Fahlman or slisp-group@cs.cmu.edu.
;;; ;;;
(ext:file-comment (ext:file-comment
"$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/assembly/x86/alloc.lisp,v 1.1 1997/01/21 00:30:28 ram Exp $") "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/assembly/x86/alloc.lisp,v 1.2 1997/02/10 16:59:54 dtc Exp $")
;;; ;;;
;;; ********************************************************************** ;;; **********************************************************************
;;; ;;;
...@@ -56,6 +56,12 @@ ...@@ -56,6 +56,12 @@
(inst ret) (inst ret)
BIGNUM BIGNUM
;;; Note: On the mips port space for a two word bignum is always
;;; allocated and the header size is set to either one or two words
;;; as appropriate. On the mips port this is faster, and smaller
;;; inline, but produces more garbage. The inline x86 version uses
;;; the same approach, but here we save garbage and allocate the
;;; smallest possible bignum.
(inst jmp :ns one-word-bignum) (inst jmp :ns one-word-bignum)
(inst mov ebx eax) (inst mov ebx eax)
......
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