[N]BUTLAST perform a single pass over the list

[sbcl.git] / NEWS

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 ;;;; -*- coding: utf-8; fill-column: 78 -*-
 changes relative to sbcl-1.1.13:
+  * optimization: complicated TYPEP tests are less opaque to the type
+    propagation pass. (lp#1229340)
+  * optimization: [N]BUTLAST perform a single pass over the list. (lp#1245697)
   * enhancement: Top-level defmethod without defgeneric no longer causes
     undefined-function warnings in subsequent forms. (lp#503095)
   * bug fix: EQUALP now compares correctly structures with raw slots larger