X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcode%2Ftypedefs.lisp;h=45b91042c9ca054105f306d68cf5955089b0cd8a;hb=51cf665f514935c8067f86f3850fd917731cada0;hp=228d6053529798665c5389050c9097e413008565;hpb=67d2b80e478824a46317419f076ab1f6b020f6b1;p=sbcl.git

diff --git a/src/code/typedefs.lisp b/src/code/typedefs.lisp
index 228d605..45b9104 100644
--- a/src/code/typedefs.lisp
+++ b/src/code/typedefs.lisp
@@ -76,7 +76,7 @@
   (enumerable nil :read-only t)
   ;; an arbitrary hash code used in EQ-style hashing of identity
   ;; (since EQ hashing can't be done portably)
-  (hash-value (random (1+ most-positive-fixnum))
+  (hash-value (random #.(ash 1 20))
 	      :type (and fixnum unsigned-byte)
 	      :read-only t)
   ;; Can this object contain other types? A global property of our
@@ -88,7 +88,7 @@
   ;; is disjoint from MEMBER-TYPE and so forth. But types which can
   ;; contain other types, like HAIRY-TYPE and INTERSECTION-TYPE, can
   ;; violate this rule.
-  (might-contain-other-types? nil :read-only t))
+  (might-contain-other-types-p nil :read-only t))
 (def!method print-object ((ctype ctype) stream)
   (print-unreadable-object (ctype stream :type t)
     (prin1 (type-specifier ctype) stream)))
@@ -128,6 +128,15 @@
   (logand (logxor (ash (type-hash-value type1) -3)
 		  (type-hash-value type2))
 	  #xFF))
+#!-sb-fluid (declaim (inline type-list-cache-hash))
+(declaim (ftype (function (list) (unsigned-byte 8)) type-list-cache-hash))
+(defun type-list-cache-hash (types)
+  (logand (loop with res = 0
+             for type in types
+             for hash = (type-hash-value type)
+             do (setq res (logxor res hash))
+             finally (return res))
+	  #xFF))
 
 ;;;; cold loading initializations