1.0.4.39: get rid of hardcoded mutex and spinlock slot indexes

[sbcl.git] / src / compiler / x86-64 / cell.lisp

diff --git a/src/compiler/x86-64/cell.lisp b/src/compiler/x86-64/cell.lisp
index ed3a1c9..929e74f 100644 (file)
--- a/src/compiler/x86-64/cell.lisp
+++ b/src/compiler/x86-64/cell.lisp
@@ -83,16 +83,6 @@
 (define-vop (set cell-set)
   (:variant symbol-value-slot other-pointer-lowtag))
 
-;;; Do a cell ref with an error check for being unbound.
-;;; XXX stil used? I can't see where -dan
-(define-vop (checked-cell-ref)
-  (:args (object :scs (descriptor-reg) :target obj-temp))
-  (:results (value :scs (descriptor-reg any-reg)))
-  (:policy :fast-safe)
-  (:vop-var vop)
-  (:save-p :compute-only)
-  (:temporary (:sc descriptor-reg :from (:argument 0)) obj-temp))
-
 ;;; With Symbol-Value, we check that the value isn't the trap object. So
 ;;; Symbol-Value of NIL is NIL.
 #!+sb-thread
@@ -299,7 +289,7 @@
       (pseudo-atomic
        (emit-label get-tls-index-lock)
        (inst mov temp 1)
-       (inst xor rax rax)
+       (zeroize rax)
        (inst lock)
        (inst cmpxchg (make-ea-for-symbol-value *tls-index-lock*) temp)
        (inst jmp :ne get-tls-index-lock)