From 49e822ae4849031df975a9cd4d7c4f5eeecd558b Mon Sep 17 00:00:00 2001
From: dtc <dtc>
Date: Thu, 11 Nov 1999 15:33:55 +0000
Subject: [PATCH] Optimise eql zero comparisions in generic-eql-c/fixnum to use
 the TEST instruction when the argument is a descriptor-reg.

---
 compiler/x86/arith.lisp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/compiler/x86/arith.lisp b/compiler/x86/arith.lisp
index 774a98800..6921e4a7a 100644
--- a/compiler/x86/arith.lisp
+++ b/compiler/x86/arith.lisp
@@ -7,7 +7,7 @@
 ;;; Scott Fahlman or slisp-group@cs.cmu.edu.
 ;;;
 (ext:file-comment
- "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/compiler/x86/arith.lisp,v 1.10 1998/02/19 19:34:38 dtc Exp $")
+ "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/compiler/x86/arith.lisp,v 1.11 1999/11/11 15:33:55 dtc Exp $")
 ;;;
 ;;; **********************************************************************
 ;;;
@@ -924,7 +924,7 @@
   (:info target not-p y)
   (:translate eql)
   (:generator 2
-    (cond ((and (sc-is x any-reg) (zerop y))
+    (cond ((and (sc-is x any-reg descriptor-reg) (zerop y))
 	   (inst test x x))  ; Smaller instruction
 	  (t
 	   (inst cmp x (fixnum y))))
-- 
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