0.6.12.21:

[sbcl.git] / src / compiler / x86 / type-vops.lisp

diff --git a/src/compiler/x86/type-vops.lisp b/src/compiler/x86/type-vops.lisp
index 77c8f46..d00cd22 100644 (file)
--- a/src/compiler/x86/type-vops.lisp
+++ b/src/compiler/x86/type-vops.lisp
@@ -10,9 +10,6 @@
 ;;;; files for more information.
 
 (in-package "SB!VM")
-
-(file-comment
- "$Header$")
 \f
 ;;;; test generation utilities
 
@@ -109,7 +106,7 @@
 ;;; Emit the most compact form of the test immediate instruction,
 ;;; using an 8 bit test when the immediate is only 8 bits and the
 ;;; value is one of the four low registers (eax, ebx, ecx, edx) or the
-;;; control-stack.
+;;; control stack.
 (defun generate-fixnum-test (value)
   (let ((offset (tn-offset value)))
     (cond ((and (sc-is value any-reg descriptor-reg)
@@ -258,7 +255,7 @@
   (:info target not-p)
   (:policy :fast-safe))
 
-;;; Simpler VOP that don't need a temporary register.
+;;; simpler VOP that don't need a temporary register
 (define-vop (simple-check-type)
   (:args (value :target result :scs (any-reg descriptor-reg)))
   (:results (result :scs (any-reg descriptor-reg)
@@ -620,9 +617,9 @@
     YEP
     (move result value)))
 
-;;; An (unsigned-byte 32) can be represented with either a positive fixnum, a
-;;; bignum with exactly one positive digit, or a bignum with exactly two digits
-;;; and the second digit all zeros.
+;;; An (unsigned-byte 32) can be represented with either a positive
+;;; fixnum, a bignum with exactly one positive digit, or a bignum with
+;;; exactly two digits and the second digit all zeros.
 
 (define-vop (unsigned-byte-32-p type-predicate)
   (:translate unsigned-byte-32-p)
@@ -722,7 +719,7 @@
   (:translate symbolp)
   (:generator 12
     (let ((is-symbol-label (if not-p drop-thru target)))
-      (inst cmp value *nil-value*)
+      (inst cmp value nil-value)
       (inst jmp :e is-symbol-label)
       (test-type value target not-p symbol-header-type))
     DROP-THRU))
@@ -730,7 +727,7 @@
 (define-vop (check-symbol check-type)
   (:generator 12
     (let ((error (generate-error-code vop object-not-symbol-error value)))
-      (inst cmp value *nil-value*)
+      (inst cmp value nil-value)
       (inst jmp :e drop-thru)
       (test-type value error t symbol-header-type))
     DROP-THRU
@@ -740,7 +737,7 @@
   (:translate consp)
   (:generator 8
     (let ((is-not-cons-label (if not-p target drop-thru)))
-      (inst cmp value *nil-value*)
+      (inst cmp value nil-value)
       (inst jmp :e is-not-cons-label)
       (test-type value target not-p list-pointer-type))
     DROP-THRU))
@@ -748,7 +745,7 @@
 (define-vop (check-cons check-type)
   (:generator 8
     (let ((error (generate-error-code vop object-not-cons-error value)))
-      (inst cmp value *nil-value*)
+      (inst cmp value nil-value)
       (inst jmp :e error)
       (test-type value error t list-pointer-type)
       (move result value))))