More identity folding for LOGAND and LOGIOR with constants

[sbcl.git] / NEWS

diff --git a/NEWS b/NEWS
index b23e3ee..ba7dcd9 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -13,6 +13,7 @@ changes relative to sbcl-1.1.8:
     conditionals.
   * optimization: bitwise OR forms can now trigger modular arithmetic as well,
     when the result is known to be negative.
+  * optimization: recognize more cases of useless LOGAND/LOGIOR with constants.
   * bug fix: problems with NCONC type derivation (reported by Jerry James).
   * bug fix: EXPT type derivation no longer constructs bogus floating-point
     types.  (reported by Vsevolod Dyomkin)