0.7.8.12:

[sbcl.git] / src / compiler / generic / late-type-vops.lisp

diff --git a/src/compiler/generic/late-type-vops.lisp b/src/compiler/generic/late-type-vops.lisp
index 1d4d29a..4953792 100644 (file)
--- a/src/compiler/generic/late-type-vops.lisp
+++ b/src/compiler/generic/late-type-vops.lisp
@@ -1,18 +1,34 @@
+;;;; generic type testing and checking VOPs
+
+;;;; 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")
-
+\f
 (!define-type-vops fixnump check-fixnum fixnum object-not-fixnum-error
   (even-fixnum-lowtag odd-fixnum-lowtag)
   ;; we can save a register on the x86.
-  :variant simple)
+  :variant simple
+  ;; we can save a couple of instructions and a branch on the ppc.
+  ;; FIXME: make this be FIXNUM-MASK
+  :mask 3)
 
 (!define-type-vops functionp check-fun function object-not-fun-error
-  (fun-pointer-lowtag))
+  (fun-pointer-lowtag)
+  :mask lowtag-mask)
 
 (!define-type-vops listp check-list list object-not-list-error
-  (list-pointer-lowtag))
+  (list-pointer-lowtag)
+  :mask lowtag-mask)
 
 (!define-type-vops %instancep check-instance instance object-not-instance-error
-  (instance-pointer-lowtag))
+  (instance-pointer-lowtag)
+  :mask lowtag-mask)
 
 (!define-type-vops bignump check-bignum bignum object-not-bignum-error
   (bignum-widetag))