1.0.7.19: SB-EXT:COMPARE-AND-SWAP

[sbcl.git] / src / code / array.lisp

diff --git a/src/code/array.lisp b/src/code/array.lisp
index 50f730a..817bdb7 100644 (file)
--- a/src/code/array.lisp
+++ b/src/code/array.lisp
@@ -56,19 +56,6 @@
         (values vector index))
       (values array index)))
 
-(declaim (inline simple-vector-compare-and-swap))
-(defun simple-vector-compare-and-swap (vector index old new)
-  #!+(or x86 x86-64)
-  (%simple-vector-compare-and-swap vector
-                                   (%check-bound vector (length vector) index)
-                                   old
-                                   new)
-  #!-(or x86 x86-64)
-  (let ((n-old (svref vector index)))
-    (when (eq old n-old)
-      (setf (svref vector index) new))
-    n-old))
-
 ;;; It'd waste space to expand copies of error handling in every
 ;;; inline %WITH-ARRAY-DATA, so we have them call this function
 ;;; instead. This is just a wrapper which is known never to return.
@@ -482,6 +469,9 @@ of specialized arrays is supported."
 (defun data-vector-ref (array index)
   (hairy-data-vector-ref array index))
 
+(defun data-vector-ref-with-offset (array index offset)
+  (hairy-data-vector-ref array (+ index offset)))
+
 ;;; SUBSCRIPTS has a dynamic-extent list structure and is destroyed
 (defun %array-row-major-index (array subscripts
                                      &optional (invalid-index-error-p t))