X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=OPTIMIZATIONS;h=a702c7d2ba18edf5f3899d312027286d0664fcdd;hb=7c7e6276719b8d40fddec2070cad81064a25c8ed;hp=eb2931ff353e13b5dc9a031c45dd24fbfee47d07;hpb=69ef68ba7393e3492c1b4a756d1140f71c2922bc;p=sbcl.git

diff --git a/OPTIMIZATIONS b/OPTIMIZATIONS
index eb2931f..a702c7d 100644
--- a/OPTIMIZATIONS
+++ b/OPTIMIZATIONS
@@ -224,3 +224,11 @@ Initialization of stack-allocated arrays is inefficient: we always
 fill the vector with zeroes, even when it is not needed (as for
 platforms with conservative GC or for arrays of unboxed objectes) and
 is performed later explicitely.
+--------------------------------------------------------------------------------
+#28
+a. Accessing raw slots in structure instances is more inefficient than
+it could be; if we placed raw slots before the header word, we would
+not need to do arithmetic at runtime to access them.  (But beware:
+this would complicate handling of the interior pointer).
+
+b. (Also note that raw slots are currently disabled on HPPA)
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