X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Farith.lisp;h=f9c09e1d1c321d9a8d209fb1701a39c85eb8b2da;hb=19319c931fc1636835dbef71808cc10e252bcf45;hp=ab11950f81bf3665fd623a2679e9cb146c32e44b;hpb=37b93fe46f304244d1c69c06b82a22252e393630;p=sbcl.git

diff --git a/src/compiler/x86/arith.lisp b/src/compiler/x86/arith.lisp
index ab11950..f9c09e1 100644
--- a/src/compiler/x86/arith.lisp
+++ b/src/compiler/x86/arith.lisp
@@ -810,6 +810,52 @@ constant shift greater than word length")))
 
     DONE))
 
+#!+ash-right-vops
+(define-vop (fast-%ash/right/unsigned)
+  (:translate %ash/right)
+  (:policy :fast-safe)
+  (:args (number :scs (unsigned-reg) :target result)
+         (amount :scs (unsigned-reg) :target ecx))
+  (:arg-types unsigned-num unsigned-num)
+  (:results (result :scs (unsigned-reg) :from (:argument 0)))
+  (:result-types unsigned-num)
+  (:temporary (:sc signed-reg :offset ecx-offset :from (:argument 1)) ecx)
+  (:generator 4
+    (move result number)
+    (move ecx amount)
+    (inst shr result :cl)))
+
+#!+ash-right-vops
+(define-vop (fast-%ash/right/signed)
+  (:translate %ash/right)
+  (:policy :fast-safe)
+  (:args (number :scs (signed-reg) :target result)
+         (amount :scs (unsigned-reg) :target ecx))
+  (:arg-types signed-num unsigned-num)
+  (:results (result :scs (signed-reg) :from (:argument 0)))
+  (:result-types signed-num)
+  (:temporary (:sc signed-reg :offset ecx-offset :from (:argument 1)) ecx)
+  (:generator 4
+    (move result number)
+    (move ecx amount)
+    (inst sar result :cl)))
+
+#!+ash-right-vops
+(define-vop (fast-%ash/right/fixnum)
+  (:translate %ash/right)
+  (:policy :fast-safe)
+  (:args (number :scs (any-reg) :target result)
+         (amount :scs (unsigned-reg) :target ecx))
+  (:arg-types tagged-num unsigned-num)
+  (:results (result :scs (any-reg) :from (:argument 0)))
+  (:result-types tagged-num)
+  (:temporary (:sc signed-reg :offset ecx-offset :from (:argument 1)) ecx)
+  (:generator 3
+    (move result number)
+    (move ecx amount)
+    (inst sar result :cl)
+    (inst and result (lognot fixnum-tag-mask))))
+
 (in-package "SB!C")
 
 (defknown %lea (integer integer (member 1 2 4 8) (signed-byte 32))
@@ -1139,10 +1185,14 @@ constant shift greater than word length")))
                                            cond
                                            unsigned))
                         (:generator ,cost
-                                    (inst cmp x
-                                          ,(if (eq suffix '-c/fixnum)
-                                               '(fixnumize y)
-                                               'y)))))
+                          (cond ((and (sc-is x any-reg signed-reg unsigned-reg)
+                                      (eql y 0))
+                                 (inst test x x))
+                                (t
+                                 (inst cmp x
+                                       ,(if (eq suffix '-c/fixnum)
+                                            '(fixnumize y)
+                                            'y)))))))
                    '(/fixnum -c/fixnum /signed -c/signed /unsigned -c/unsigned)
                    '(4 3 6 5 6 5)
                    '(t t t t nil nil)))))
@@ -1316,6 +1366,22 @@ constant shift greater than word length")))
   ;; (no -C variant as x86 MUL instruction doesn't take an immediate)
   (def * nil))
 
+(define-modular-fun %negate-mod32 (x) %negate :untagged nil 32)
+(define-vop (%negate-mod32)
+  (:translate %negate-mod32)
+  (:policy :fast-safe)
+  (:args (x :scs (unsigned-reg) :target r))
+  (:arg-types unsigned-num)
+  (:results (r :scs (unsigned-reg)))
+  (:result-types unsigned-num)
+  (:generator 3
+    (move r x)
+    (inst neg r)))
+
+(define-modular-fun %negate-modfx (x) %negate :tagged t #.(- n-word-bits
+                                                             n-fixnum-tag-bits))
+(define-vop (%negate-modfx fast-negate/fixnum)
+  (:translate %negate-modfx))
 
 (define-vop (fast-ash-left-mod32-c/unsigned=>unsigned
              fast-ash-c/unsigned=>unsigned)