x86-64 disentwingling of fixnums and words.

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

diff --git a/src/compiler/x86-64/system.lisp b/src/compiler/x86-64/system.lisp
index 2d710d9..7cb54a4 100644 (file)
--- a/src/compiler/x86-64/system.lisp
+++ b/src/compiler/x86-64/system.lisp
@@ -39,14 +39,14 @@
     (inst cmp al-tn fun-pointer-lowtag)
     (inst jmp :e FUNCTION-PTR)
 
-    ;; Pick off structures and list pointers.
-    (inst test al-tn 1)
-    (inst jmp :ne DONE)
-
     ;; Pick off fixnums.
-    (inst and al-tn fixnum-tag-mask)
+    (inst test al-tn fixnum-tag-mask)
     (inst jmp :e DONE)
 
+    ;; Pick off structures and list pointers.
+    (inst test al-tn 2)
+    (inst jmp :ne DONE)
+
     ;; must be an other immediate
     (inst mov rax object)
     (inst jmp DONE)