X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86-64%2Falloc.lisp;h=02b3cc46881f4bde9bbb807d8f3ac81a76f43578;hb=a3d4610158f227d53cb5eac287dd2661e975fc70;hp=fbde8b6d720fdc02ed97e9bdd6d714261e233494;hpb=3b5fb548ed34612fb853b11b2bcdd29440834eaa;p=sbcl.git diff --git a/src/compiler/x86-64/alloc.lisp b/src/compiler/x86-64/alloc.lisp index fbde8b6..02b3cc4 100644 --- a/src/compiler/x86-64/alloc.lisp +++ b/src/compiler/x86-64/alloc.lisp @@ -169,7 +169,7 @@ (define-vop (make-unbound-marker) (:args) - (:results (result :scs (any-reg))) + (:results (result :scs (descriptor-reg any-reg))) (:generator 1 (inst mov result unbound-marker-widetag))) @@ -217,40 +217,3 @@ (allocation result bytes node) (inst lea result (make-ea :byte :base result :disp lowtag)) (storew header result 0 lowtag)))) - -(define-vop (%make-symbol) - (:policy :fast-safe) - (:translate %make-symbol) - (:args (name :scs (descriptor-reg) :to :eval)) - (:temporary (:sc unsigned-reg :from :eval) temp) - (:results (result :scs (descriptor-reg) :from :argument)) - (:node-var node) - (:generator 37 - (with-fixed-allocation (result symbol-header-widetag symbol-size node) - (storew name result symbol-name-slot other-pointer-lowtag) - (storew unbound-marker-widetag - result - symbol-value-slot - other-pointer-lowtag) - ;; Set up a random hash value for the symbol. Perhaps the object - ;; address could be used for even faster and smaller code! - ;; FIXME: We don't mind the symbol hash not being repeatable, so - ;; we might as well add in the object address here, too. (Adding entropy - ;; is good, even if ANSI doesn't understand that.) - (inst imul temp - (make-fixup "fast_random_state" :foreign) - 1103515245) - (inst add temp 12345) - (inst mov (make-fixup "fast_random_state" :foreign) - temp) - ;; We want a positive fixnum for the hash value, so discard the LS bits. - ;; - ;; FIXME: OK, who wants to tell me (CSR) why these two - ;; instructions aren't replaced by (INST AND TEMP #x8FFFFFFC)? - ;; Are the following two instructions actually faster? Does the - ;; difference in behaviour really matter? - (inst shr temp 1) - (inst and temp #xfffffffc) - (storew temp result symbol-hash-slot other-pointer-lowtag) - (storew nil-value result symbol-plist-slot other-pointer-lowtag) - (storew nil-value result symbol-package-slot other-pointer-lowtag))))