X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fmips%2Fchar.lisp;h=63775abe57d264f934dfcde66a6a5599b0536fe2;hb=ef0891e470ff35840def7a5717ede18a58266e76;hp=acfef9e4497d680accc05ba91566147fc79413b2;hpb=4ae1b794a5d6a90794468cf8017f5307f2c30dfe;p=sbcl.git

diff --git a/src/compiler/mips/char.lisp b/src/compiler/mips/char.lisp
index acfef9e..63775ab 100644
--- a/src/compiler/mips/char.lisp
+++ b/src/compiler/mips/char.lisp
@@ -1,116 +1,124 @@
-(in-package "SB!VM")
+;;;; the MIPS VM definition of character operations
 
+;;;; This software is part of the SBCL system. See the README file for
+;;;; more information.
+;;;;
+;;;; This software is derived from the CMU CL system, which was
+;;;; written at Carnegie Mellon University and released into the
+;;;; public domain. The software is in the public domain and is
+;;;; provided with absolutely no warranty. See the COPYING and CREDITS
+;;;; files for more information.
 
+(in-package "SB!VM")
 
 ;;;; Moves and coercions:
 
 ;;; Move a tagged char to an untagged representation.
-;;;
-(define-vop (move-to-base-char)
+(define-vop (move-to-character)
   (:args (x :scs (any-reg descriptor-reg)))
-  (:results (y :scs (base-char-reg)))
+  (:results (y :scs (character-reg)))
+  (:note "character untagging")
   (:generator 1
     (inst srl y x n-widetag-bits)))
-;;;
-(define-move-vop move-to-base-char :move
-  (any-reg descriptor-reg) (base-char-reg))
 
+(define-move-vop move-to-character :move
+  (any-reg descriptor-reg) (character-reg))
 
 ;;; Move an untagged char to a tagged representation.
-;;;
-(define-vop (move-from-base-char)
-  (:args (x :scs (base-char-reg)))
+(define-vop (move-from-character)
+  (:args (x :scs (character-reg)))
   (:results (y :scs (any-reg descriptor-reg)))
+  (:note "character tagging")
   (:generator 1
     (inst sll y x n-widetag-bits)
-    (inst or y y base-char-widetag)))
-;;;
-(define-move-vop move-from-base-char :move
-  (base-char-reg) (any-reg descriptor-reg))
-
-;;; Move untagged base-char values.
-;;;
-(define-vop (base-char-move)
+    (inst or y character-widetag)))
+
+(define-move-vop move-from-character :move
+  (character-reg) (any-reg descriptor-reg))
+
+;;; Move untagged character values.
+(define-vop (character-move)
   (:args (x :target y
-	    :scs (base-char-reg)
-	    :load-if (not (location= x y))))
-  (:results (y :scs (base-char-reg)
-	       :load-if (not (location= x y))))
+            :scs (character-reg)
+            :load-if (not (location= x y))))
+  (:results (y :scs (character-reg)
+               :load-if (not (location= x y))))
+  (:note "character move")
   (:effects)
   (:affected)
   (:generator 0
     (move y x)))
-;;;
-(define-move-vop base-char-move :move
-  (base-char-reg) (base-char-reg))
 
+(define-move-vop character-move :move
+  (character-reg) (character-reg))
 
-;;; Move untagged base-char arguments/return-values.
-;;;
-(define-vop (move-base-char-arg)
+;;; Move untagged character arguments/return-values.
+(define-vop (move-character-arg)
   (:args (x :target y
-	    :scs (base-char-reg))
-	 (fp :scs (any-reg)
-	     :load-if (not (sc-is y base-char-reg))))
+            :scs (character-reg))
+         (fp :scs (any-reg)
+             :load-if (not (sc-is y character-reg))))
   (:results (y))
+  (:note "character arg move")
   (:generator 0
     (sc-case y
-      (base-char-reg
+      (character-reg
        (move y x))
-      (base-char-stack
+      (character-stack
        (storew x fp (tn-offset y))))))
-;;;
-(define-move-vop move-base-char-arg :move-arg
-  (any-reg base-char-reg) (base-char-reg))
 
+(define-move-vop move-character-arg :move-arg
+  (any-reg character-reg) (character-reg))
 
-;;; Use standard MOVE-ARGUMENT + coercion to move an untagged base-char
-;;; to a descriptor passing location.
-;;;
+;;; Use standard MOVE-ARG + coercion to move an untagged character to
+;;; a descriptor passing location.
 (define-move-vop move-arg :move-arg
-  (base-char-reg) (any-reg descriptor-reg))
-
-
+  (character-reg) (any-reg descriptor-reg))
 
 ;;;; Other operations:
-
 (define-vop (char-code)
   (:translate char-code)
   (:policy :fast-safe)
-  (:args (ch :scs (base-char-reg) :target res))
-  (:arg-types base-char)
+  (:args (ch :scs (character-reg) :target res))
+  (:arg-types character)
   (:results (res :scs (any-reg)))
   (:result-types positive-fixnum)
   (:generator 1
-    (inst sll res ch 2)))
+    (inst sll res ch n-fixnum-tag-bits)))
 
 (define-vop (code-char)
   (:translate code-char)
   (:policy :fast-safe)
   (:args (code :scs (any-reg) :target res))
   (:arg-types positive-fixnum)
-  (:results (res :scs (base-char-reg)))
-  (:result-types base-char)
+  (:results (res :scs (character-reg)))
+  (:result-types character)
   (:generator 1
-    (inst srl res code 2)))
-
+    (inst srl res code n-fixnum-tag-bits)))
 
-;;; Comparison of base-chars.
-;;;
-(define-vop (base-char-compare pointer-compare)
-  (:args (x :scs (base-char-reg))
-	 (y :scs (base-char-reg)))
-  (:arg-types base-char base-char))
-
-(define-vop (fast-char=/base-char base-char-compare)
+;;; Comparison of characters.
+(define-vop (character-compare)
+  (:args (x :scs (character-reg))
+         (y :scs (character-reg)))
+  (:arg-types character character)
+  (:temporary (:scs (non-descriptor-reg)) temp)
+  (:conditional)
+  (:info target not-p)
+  (:policy :fast-safe)
+  (:note "inline comparison")
+  (:variant-vars condition)
+  (:generator 3
+    (three-way-comparison x y condition :unsigned not-p target temp)))
+
+(define-vop (fast-char=/character character-compare)
   (:translate char=)
   (:variant :eq))
 
-(define-vop (fast-char</base-char base-char-compare)
+(define-vop (fast-char</character character-compare)
   (:translate char<)
   (:variant :lt))
 
-(define-vop (fast-char>/base-char base-char-compare)
+(define-vop (fast-char>/character character-compare)
   (:translate char>)
   (:variant :gt))