X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86-64%2Fvalues.lisp;h=0c3f4e71a04d581a5ffbd3a43ac5bab4ade8e66b;hb=fe962ba01d267b92f638c8f0d19be41054219f04;hp=4f5f5ae45bac1bc0025a0fbbef234e22b6463cef;hpb=0d871fd7a98fc4af92a8b942a1154761466ad8c9;p=sbcl.git

diff --git a/src/compiler/x86-64/values.lisp b/src/compiler/x86-64/values.lisp
index 4f5f5ae..0c3f4e7 100644
--- a/src/compiler/x86-64/values.lisp
+++ b/src/compiler/x86-64/values.lisp
@@ -113,7 +113,7 @@
   (:arg-types * positive-fixnum positive-fixnum)
   (:temporary (:sc any-reg :offset rsi-offset :from (:argument 0)) src)
   (:temporary (:sc descriptor-reg :offset rax-offset) temp)
-  (:temporary (:sc unsigned-reg :offset rcx-offset) temp1)
+  (:temporary (:sc unsigned-reg :offset rcx-offset) loop-index)
   (:results (start :scs (any-reg))
             (count :scs (any-reg)))
   (:generator 20
@@ -135,17 +135,18 @@
        (move count num)
        (inst sub count skip)))
 
-    (move temp1 count)
+    (move loop-index count)
     (inst mov start rsp-tn)
     (inst jecxz DONE)  ; check for 0 count?
 
-    (inst shr temp1 word-shift) ; convert the fixnum to a count.
+    (inst sub rsp-tn count)
+    (inst sub src count)
 
-    (inst std) ; move down the stack as more value are copied to the bottom.
     LOOP
-    (inst lods temp)
-    (inst push temp)
-    (inst loop LOOP)
+    (inst mov temp (make-ea :qword :base src :index loop-index))
+    (inst sub loop-index n-word-bytes)
+    (inst mov (make-ea :qword :base rsp-tn :index loop-index) temp)
+    (inst jmp :nz LOOP)
 
     DONE))