0.9.3.19:

[sbcl.git] / src / compiler / srctran.lisp

diff --git a/src/compiler/srctran.lisp b/src/compiler/srctran.lisp
index 04060f8..620ab2a 100644 (file)
--- a/src/compiler/srctran.lisp
+++ b/src/compiler/srctran.lisp
@@ -128,6 +128,13 @@
 
 (define-source-transform nth (n l) `(car (nthcdr ,n ,l)))
 
+(define-source-transform last (x) `(sb!impl::last1 ,x))
+;; (define-source-transform last (x)
+;;  `(let* ((x (the list ,x))
+;;          (r (cdr x)))
+;;     (do () ((atom r) x)
+;;       (shiftf x r (cdr r)))))
+
 (defvar *default-nthcdr-open-code-limit* 6)
 (defvar *extreme-nthcdr-open-code-limit* 20)