X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Fsystem.lisp;h=2128d2b3bbe9e238a52ecc92b235ee2ba4259c98;hb=ee5629ee974ee8ce7a1cb245a99e94f8943ffd90;hp=77981e8ed278e9a87fa2354610964fcb06734aa0;hpb=d4d54599b5acc39f97ff880507388687b684d36a;p=sbcl.git

diff --git a/src/compiler/x86/system.lisp b/src/compiler/x86/system.lisp
index 77981e8..2128d2b 100644
--- a/src/compiler/x86/system.lisp
+++ b/src/compiler/x86/system.lisp
@@ -372,18 +372,22 @@ number of CPU cycles elapsed as secondary value. EXPERIMENTAL."
 (define-vop (%read-barrier)
   (:policy :fast-safe)
   (:translate %read-barrier)
-  (:generator 3
-    (inst add (make-ea :dword :base esp-tn) 0 :lock)))
+  (:generator 3))
 
 #!+memory-barrier-vops
 (define-vop (%write-barrier)
   (:policy :fast-safe)
   (:translate %write-barrier)
-  (:generator 3
-    (inst add (make-ea :dword :base esp-tn) 0 :lock)))
+  (:generator 3))
 
 #!+memory-barrier-vops
 (define-vop (%data-dependency-barrier)
   (:policy :fast-safe)
   (:translate %data-dependency-barrier)
   (:generator 3))
+
+(define-vop (pause)
+  (:translate spin-loop-hint)
+  (:policy :fast-safe)
+  (:generator 0
+    (inst pause)))