0.9.2.31:

[sbcl.git] / src / compiler / mips / arith.lisp

diff --git a/src/compiler/mips/arith.lisp b/src/compiler/mips/arith.lisp
index 9d13c93..93e0bf6 100644 (file)
--- a/src/compiler/mips/arith.lisp
+++ b/src/compiler/mips/arith.lisp
@@ -160,15 +160,24 @@
 (define-binop logand 1 3 and (unsigned-byte 14) (unsigned-byte 16))
 (define-binop logxor 1 3 xor (unsigned-byte 14) (unsigned-byte 16))
 
-;;; KLUDGE: no FIXNUM VOP for LOGNOR, because there's no efficient way
-;;; of restoring the tag bits.  (No -C/ VOPs for LOGNOR because the
-;;; NOR instruction doesn't take immediate args).  -- CSR, 2003-09-11
+;;; No -C/ VOPs for LOGNOR because the NOR instruction doesn't take
+;;; immediate args.  -- CSR, 2003-09-11
+(define-vop (fast-lognor/fixnum=>fixnum fast-fixnum-binop)
+  (:translate lognor)
+  (:args (x :target r :scs (any-reg))
+        (y :target r :scs (any-reg)))
+  (:temporary (:sc non-descriptor-reg) temp)
+  (:generator 4
+    (inst nor temp x y)
+    (inst addu r temp (- fixnum-tag-mask))))
+
 (define-vop (fast-lognor/signed=>signed fast-signed-binop)
   (:translate lognor)
   (:args (x :target r :scs (signed-reg))
         (y :target r :scs (signed-reg)))
   (:generator 4
     (inst nor r x y)))
+
 (define-vop (fast-lognor/unsigned=>unsigned fast-unsigned-binop)
   (:translate lognor)
   (:args (x :target r :scs (unsigned-reg))
@@ -229,7 +238,7 @@
     (inst bne temp zero-tn done)
     (inst srl result number ndesc)
     (inst b done)
-    (inst move result zero-tn)
+    (move result zero-tn t)
 
     POSITIVE
     ;; The result-type assures us that this shift will not overflow.
@@ -331,7 +340,7 @@
          (test (gen-label)))
       (move shift arg)
       (inst bgez shift test)
-      (move res zero-tn)
+      (move res zero-tn t)
       (inst b test)
       (inst nor shift shift)