1.0.5.46: improve handling of non-standard subclasses of SB-MOP:SPECIALIZER

[sbcl.git] / NEWS

diff --git a/NEWS b/NEWS
index 52ecd23..af347b3 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -4,16 +4,22 @@ changes in sbcl-1.0.6 relative to sbcl-1.0.5:
     as a contrib module.
   * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
     significantly faster.
+  * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
+    produce more efficient code on x86-64 if the compiler can determine
+    that (+ INDEX <constant>) does not require a bounds check and FOO
+    has an element type at least 8 bits wide.
   * enhancement: a new, experimental synchronous timeout facility is
     provided. Refer to SB-SYS:WITH-DEADLINE for details.
   * enhancement: when a symbol name conflict error arises, the
     conflicting symbols are always printed with a package prefix.
     (thanks to Kevin Reid)
-  * enhancement: stepping is now once again supported on the SPARC.  (It is
-    also now more likely to work on CheneyGC builds on the PPC.)
-  * enhancement: Stepping support on MIPS.
+  * enhancement: stepping is now once again supported on the SPARC and
+    MIPS platforms.  (It is also now more likely to work on CheneyGC
+    builds on the PPC.)
   * enhancement: sb-sprof can now also track and report accurate call
     counts.
+  * bug fixes: the treatment of non-standard subclasses of
+    SB-MOP:SPECIALIZER is more correct.
   * incompatible change: PURIFY no longer copies the data from the 
     dynamic space into the static and read-only spaces on platforms
     that use the generational garbage collector