X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Fchar.lisp;h=39cb78a1f3b27efe0c7c7ec3100725c65eb81735;hb=42ab0c5b87f834c69842713c60587a76f953411f;hp=f44f3275aab6690b407e20c3447714a3a0da6d34;hpb=0d871fd7a98fc4af92a8b942a1154761466ad8c9;p=sbcl.git

diff --git a/src/compiler/x86/char.lisp b/src/compiler/x86/char.lisp
index f44f327..39cb78a 100644
--- a/src/compiler/x86/char.lisp
+++ b/src/compiler/x86/char.lisp
@@ -44,16 +44,12 @@
 ;;; Move an untagged char to a tagged representation.
 #!+sb-unicode
 (define-vop (move-from-character)
-  (:args (x :scs (character-reg)))
+  (:args (x :scs (character-reg) :target y))
   (:results (y :scs (any-reg descriptor-reg)))
   (:note "character tagging")
   (:generator 1
-    ;; FIXME: is this inefficient?  Is there a better way of writing
-    ;; it?  (fixnum tagging is done with LEA).  We can't use SHL
-    ;; because we either scribble over the source register or briefly
-    ;; have a non-descriptor in a descriptor register, unless we
-    ;; introduce a temporary.
-    (inst imul y x (ash 1 n-widetag-bits))
+    (move y x)
+    (inst shl y n-widetag-bits)
     (inst or y character-widetag)))
 #!-sb-unicode
 (define-vop (move-from-character)
@@ -103,12 +99,14 @@
       (character-stack
        #!-sb-unicode
        (inst mov
-             (make-ea :byte :base fp :disp (- (* (1+ (tn-offset y)) 4)))
+             ;; XXX: If the sb-unicode case needs to handle c-call,
+             ;; why does the non-unicode case not need to?
+             (make-ea :byte :base fp :disp (frame-byte-offset (tn-offset y)))
              x)
        #!+sb-unicode
        (if (= (tn-offset fp) esp-offset)
            (storew x fp (tn-offset y))  ; c-call
-           (storew x fp (- (1+ (tn-offset y)))))))))
+           (storew x fp (frame-word-offset (tn-offset y))))))))
 (define-move-vop move-character-arg :move-arg
   (any-reg character-reg) (character-reg))
 
@@ -122,7 +120,8 @@
 (define-vop (char-code)
   (:translate char-code)
   (:policy :fast-safe)
-  (:args (ch :scs (character-reg character-stack)))
+  (:args #!-sb-unicode (ch :scs (character-reg character-stack))
+         #!+sb-unicode (ch :scs (character-reg character-stack) :target res))
   (:arg-types character)
   (:results (res :scs (unsigned-reg)))
   (:result-types positive-fixnum)
@@ -130,18 +129,18 @@
     #!-sb-unicode
     (inst movzx res ch)
     #!+sb-unicode
-    (inst mov res ch)))
+    (move res ch)))
 
 #!+sb-unicode
 (define-vop (code-char)
   (:translate code-char)
   (:policy :fast-safe)
-  (:args (code :scs (unsigned-reg unsigned-stack)))
+  (:args (code :scs (unsigned-reg unsigned-stack) :target res))
   (:arg-types positive-fixnum)
   (:results (res :scs (character-reg)))
   (:result-types character)
   (:generator 1
-    (inst mov res code)))
+    (move res code)))
 #!-sb-unicode
 (define-vop (code-char)
   (:translate code-char)