X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fsparc%2Fcell.lisp;h=18405a31d858ad8e01ed0c4d6d47d50803576c6a;hb=80f222325e1f677e5cf8de01c6990906fa47f65d;hp=250098cdd986fb02546219b96906ea8977cbee16;hpb=b05ccdd91520249de6b465e226d3708089e541dc;p=sbcl.git

diff --git a/src/compiler/sparc/cell.lisp b/src/compiler/sparc/cell.lisp
index 250098c..18405a3 100644
--- a/src/compiler/sparc/cell.lisp
+++ b/src/compiler/sparc/cell.lisp
@@ -79,6 +79,19 @@
   (:policy :fast)
   (:translate symbol-value))
 
+(define-vop (symbol-hash)
+  (:policy :fast-safe)
+  (:translate symbol-hash)
+  (:args (symbol :scs (descriptor-reg)))
+  (:results (res :scs (any-reg)))
+  (:result-types positive-fixnum)
+  (:generator 2
+    ;; The symbol-hash slot of NIL holds NIL because it is also the
+    ;; cdr slot, so we have to strip off the two low bits to make sure
+    ;; it is a fixnum.  The lowtag selection magic that is required to
+    ;; ensure this is explained in the comment in objdef.lisp
+    (loadw res symbol symbol-hash-slot other-pointer-lowtag)
+    (inst andn res res fixnum-tag-mask)))
 
 ;;;; FDEFINITION (fdefn) objects.
 (define-vop (fdefn-fun cell-ref)