1.0.33.20: MORE CONSTANTIFICATION

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

diff --git a/src/compiler/x86-64/move.lisp b/src/compiler/x86-64/move.lisp
index cd6642b..be974f2 100644 (file)
--- a/src/compiler/x86-64/move.lisp
+++ b/src/compiler/x86-64/move.lisp
@@ -238,7 +238,7 @@
   (:note "fixnum untagging")
   (:generator 1
     (move y x)
-    (inst sar y  (1- n-lowtag-bits))))
+    (inst sar y n-fixnum-tag-bits)))
 (define-move-vop move-to-word/fixnum :move
   (any-reg descriptor-reg) (signed-reg unsigned-reg))
 
@@ -248,7 +248,11 @@
   (:results (y :scs (signed-reg unsigned-reg)))
   (:note "constant load")
   (:generator 1
-    (inst mov y (tn-value x))))
+    (cond ((sb!c::tn-leaf x)
+           (inst mov y (tn-value x)))
+          (t
+           (inst mov y x)
+           (inst sar y n-fixnum-tag-bits)))))
 (define-move-vop move-to-word-c :move
   (constant) (signed-reg unsigned-reg))
 
@@ -262,12 +266,12 @@
                    :from (:argument 0) :to (:result 0) :target y) eax)
   (:generator 4
     (move eax x)
-    (inst test al-tn 7)                 ; a symbolic constant for this
-    (inst jmp :z FIXNUM)                ; would be nice
+    (inst test al-tn fixnum-tag-mask)
+    (inst jmp :z FIXNUM)
     (loadw y eax bignum-digits-offset other-pointer-lowtag)
     (inst jmp DONE)
     FIXNUM
-    (inst sar eax (1- n-lowtag-bits))
+    (inst sar eax n-fixnum-tag-bits)
     (move y eax)
     DONE))
 (define-move-vop move-to-word/integer :move
@@ -287,11 +291,12 @@
     (cond ((and (sc-is x signed-reg unsigned-reg)
                 (not (location= x y)))
            ;; Uses 7 bytes, but faster on the Pentium
-           (inst lea y (make-ea :qword :index x :scale 8)))
+           (inst lea y (make-ea :qword :index x
+                                :scale (ash 1 n-fixnum-tag-bits))))
           (t
            ;; Uses: If x is a reg 2 + 3; if x = y uses only 3 bytes
            (move y x)
-           (inst shl y (1- n-lowtag-bits))))))
+           (inst shl y n-fixnum-tag-bits)))))
 (define-move-vop move-from-word/fixnum :move
   (signed-reg unsigned-reg) (any-reg descriptor-reg))
 
@@ -342,7 +347,7 @@
   (:generator 20
     (aver (not (location= x y)))
     (let ((done (gen-label)))
-      (inst mov y #.(ash lowtag-mask (- n-word-bits n-fixnum-tag-bits 1)))
+      (inst mov y #.(ash lowtag-mask n-positive-fixnum-bits))
       ;; The assembly routines test the sign flag from this one, so if
       ;; you change stuff here, make sure the sign flag doesn't get
       ;; overwritten before the CALL!
@@ -350,7 +355,7 @@
       ;; Faster but bigger then SHL Y 4. The cost of doing this
       ;; speculatively should be noise compared to bignum consing if
       ;; that is needed and saves one branch.
-      (inst lea y (make-ea :qword :index x :scale 8))
+      (inst lea y (make-ea :qword :index x :scale (ash 1 n-fixnum-tag-bits)))
       (inst jmp :z done)
       (inst mov y x)
       (inst lea temp-reg-tn