+The entry code for a constructor now loads the info ptr by indirecting
+node. The alternative is to load the info ptr in the enter-via-node
+sequence. There's is a trade-off here:
+
+ * If the architecture can perform an indirect jump through a
+ register in one instruction, or if the info ptr is not a
+ real register, then *not* loading the info ptr on an enter
+ is a win.
+
+ * If the enter-via-node code is identical whether we load the
+ info ptr or not, then doing it is a win (it means we don't
+ have to do it here).
+
+However, the gratuitous load here is miniscule compared to the
+gratuitous loads of the info ptr on each enter, so we go for the first
+option.
+
+-- Simon M. (6/5/96)
+