1.0.12.13: sequence optimizations: SUBSEQ, part 3

[sbcl.git] / NEWS

diff --git a/NEWS b/NEWS
index bd55399..1f3ead3 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -4,6 +4,9 @@ changes in sbcl-1.0.13 relative to sbcl-1.0.12:
     unparsing of directory pathnames as files. Analogously,
     SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
     filename to parse into a directory pathname.
+  * optimization: SUBSEQ is 30-80% faster for strings and vectors
+    whose element-type or simplicity is not fully known at
+    compile-time.
   * bug fix: some sequence functions elided bounds checking when
     SPEED > SAFETY.
   * bug fix: too liberal weakening of union-type checks when SPEED >