(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)))