X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Farray.lisp;h=b4fc18f37a17173a9fcced8617ac404ac0b32149;hb=fa2c3ba871c9818e5768fd8f6092ddda83a93a1f;hp=b4a49f44d70a486156de3447207d88180b5c9089;hpb=08917ec0d00a781a1089922a5419b7f136cdf08f;p=sbcl.git

diff --git a/src/compiler/x86/array.lisp b/src/compiler/x86/array.lisp
index b4a49f4..b4fc18f 100644
--- a/src/compiler/x86/array.lisp
+++ b/src/compiler/x86/array.lisp
@@ -696,3 +696,22 @@
 
 (define-vop (get-vector-subtype get-header-data))
 (define-vop (set-vector-subtype set-header-data))
+
+;;;; ATOMIC-INCF for arrays
+
+(define-vop (array-atomic-incf/word)
+  (:translate %array-atomic-incf/word)
+  (:policy :fast-safe)
+  (:args (array :scs (descriptor-reg))
+         (index :scs (any-reg))
+         (diff :scs (unsigned-reg) :target result))
+  (:arg-types * positive-fixnum unsigned-num)
+  (:results (result :scs (unsigned-reg)))
+  (:result-types unsigned-num)
+  (:generator 4
+    (inst xadd (make-ea :dword :base array
+                        :scale 1 :index index
+                        :disp (- (* vector-data-offset n-word-bytes)
+                                 other-pointer-lowtag))
+          diff :lock)
+    (move result diff)))