X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Fvm.lisp;h=4079bdec5dcd4a95cb6d8e895ee81735757d0b7f;hb=7c406887c08477181e869b1b98142d99b52990ac;hp=d0a9a41767464e93b6aeacf4858dec42370d3939;hpb=48ff891135e403e49037940bbad18d262e23df5e;p=sbcl.git

diff --git a/src/compiler/x86/vm.lisp b/src/compiler/x86/vm.lisp
index d0a9a41..4079bde 100644
--- a/src/compiler/x86/vm.lisp
+++ b/src/compiler/x86/vm.lisp
@@ -232,6 +232,8 @@
   (character-reg registers
                  :locations #!-sb-unicode #.*byte-regs*
                             #!+sb-unicode #.*dword-regs*
+                 #!+sb-unicode #!+sb-unicode
+                 :element-size 2
                  #!-sb-unicode #!-sb-unicode
                  :reserve-locations (#.ah-offset #.al-offset)
                  :constant-scs (immediate)
@@ -382,7 +384,7 @@
 (!def-vm-support-routine immediate-constant-sc (value)
   (typecase value
     ((or (integer #.sb!xc:most-negative-fixnum #.sb!xc:most-positive-fixnum)
-         #-sb-xc-host system-area-pointer character)
+         character)
      (sc-number-or-lose 'immediate))
     (symbol
      (when (static-symbol-p value)
@@ -402,6 +404,20 @@
                (eql value (log 2l0 10l0))
                (eql value (log 2l0 2.718281828459045235360287471352662L0)))
        (sc-number-or-lose 'fp-constant)))))
+
+;; For an immediate TN, return its value encoded for use as a literal.
+;; For any other TN, return the TN.  Only works for FIXNUMs,
+;; STATIC-SYMBOLs, and CHARACTERS (FLOATs and SAPs are handled
+;; elsewhere).
+(defun encode-value-if-immediate (tn)
+  (if (sc-is tn immediate)
+      (let ((val (tn-value tn)))
+        (etypecase val
+          (integer (fixnumize val))
+          (symbol (+ nil-value (static-symbol-offset val)))
+          (character (logior (ash (char-code val) n-widetag-bits)
+                             character-widetag))))
+      tn))
 
 ;;;; miscellaneous function call parameters