[git] CMU Common Lisp branch master updated. snapshot-2013-08-4-g650e76e

[Carl S. Shapiro]

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- Log -----------------------------------------------------------------
commit 650e76e600ca917d38a343d3751b5743aee324bb
Author: Carl Shapiro <cshapiro at common-lisp.net>
Date:   Sat Aug 10 23:21:42 2013 -0700

    compiler/x86: load byte and word values through a sap without a temporary

diff --git a/src/compiler/x86/sap.lisp b/src/compiler/x86/sap.lisp
index a01112e..bec24be 100644
--- a/src/compiler/x86/sap.lisp
+++ b/src/compiler/x86/sap.lisp
@@ -186,34 +186,24 @@
 	 (:args (sap :scs (sap-reg))
 		(offset :scs (signed-reg)))
 	 (:arg-types system-area-pointer signed-num)
-	 ,@(unless (eq size :dword)
-	     `((:temporary (:sc ,temp-sc :from (:eval 0) :to (:eval 1))
-			   temp)))
 	 (:results (result :scs (,sc)))
 	 (:result-types ,type)
 	 (:generator 5
-	   (inst mov ,(if (eq size :dword) 'result 'temp)
-		 (make-ea ,size :base sap :index offset))
-	   ,@(unless (eq size :dword)
-	       `((inst ,(if signed 'movsx 'movzx)
-		       result temp)))))
+	   (inst ,(if (eq size :dword) 'mov (if signed 'movsx 'movzx))
+		 result
+		 (make-ea ,size :base sap :index offset))))
        (define-vop (,ref-name-c)
 	 (:translate ,ref-name)
 	 (:policy :fast-safe)
 	 (:args (sap :scs (sap-reg)))
 	 (:arg-types system-area-pointer (:constant (signed-byte 32)))
 	 (:info offset)
-	 ,@(unless (eq size :dword)
-	     `((:temporary (:sc ,temp-sc :from (:eval 0) :to (:eval 1))
-			   temp)))
 	 (:results (result :scs (,sc)))
 	 (:result-types ,type)
 	 (:generator 4
-	   (inst mov ,(if (eq size :dword) 'result 'temp)
-		 (make-ea ,size :base sap :disp offset))
-	   ,@(unless (eq size :dword)
-	       `((inst ,(if signed 'movsx 'movzx)
-		       result temp)))))
+	   (inst ,(if (eq size :dword) 'mov (if signed 'movsx 'movzx))
+		 result
+		 (make-ea ,size :base sap :disp offset))))
        (define-vop (,set-name)
 	 (:translate ,set-name)
 	 (:policy :fast-safe)

-----------------------------------------------------------------------

Summary of changes:
 src/compiler/x86/sap.lisp |   22 ++++++----------------
 1 file changed, 6 insertions(+), 16 deletions(-)


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