Micro-optimize calling alloc_tramp on x86_64.

[sbcl.git] / src / compiler / alpha / subprim.lisp

diff --git a/src/compiler/alpha/subprim.lisp b/src/compiler/alpha/subprim.lisp
index 82ddcf1..b3185d1 100644 (file)
--- a/src/compiler/alpha/subprim.lisp
+++ b/src/compiler/alpha/subprim.lisp
@@ -1,24 +1,17 @@
-;;; -*- Package: ALPHA; Log: C.Log -*-
-;;;
-;;; **********************************************************************
-;;; This code was written as part of the CMU Common Lisp project at
-;;; Carnegie Mellon University, and has been placed in the public domain.
-;;;
-
-;;;
-;;; **********************************************************************
-;;;
-;;;    Linkage information for standard static functions, and random vops.
-;;;
-;;; Written by William Lott.
-;;; Converted by Sean Hallgren.
-;;; 
-(in-package "SB!VM")
-
+;;;; linkage information for standard static functions, and random 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
-;;;; Length
+;;;; LENGTH
 
 (define-vop (length/list)
   (:translate length)
@@ -27,7 +20,7 @@
   (:temporary (:scs (descriptor-reg) :from (:argument 0)) ptr)
   (:temporary (:scs (non-descriptor-reg)) temp)
   (:temporary (:scs (any-reg) :type fixnum :to (:result 0) :target result)
-             count)
+              count)
   (:results (result :scs (any-reg descriptor-reg)))
   (:policy :fast-safe)
   (:vop-var vop)
@@ -35,28 +28,24 @@
   (:generator 50
     (move object ptr)
     (move zero-tn count)
-    
+
     LOOP
-    
+
     (inst cmpeq ptr null-tn temp)
     (inst bne temp done)
-    
+
     (inst and ptr lowtag-mask temp)
-    (inst xor temp list-pointer-type temp)
+    (inst xor temp list-pointer-lowtag temp)
     (inst bne temp not-list)
-    
-    (loadw ptr ptr cons-cdr-slot list-pointer-type)
+
+    (loadw ptr ptr cons-cdr-slot list-pointer-lowtag)
     (inst addq count (fixnumize 1) count)
     (inst br zero-tn loop)
-    
+
     NOT-LIST
     (cerror-call vop done object-not-list-error ptr)
-    
+
     DONE
     (move count result)))
-       
-
-(define-static-function length (object) :translate length)
-
-
 
+(define-static-fun length (object) :translate length)