From 4daea54f87953bf9c8d9c70cd7b20c75d8396be9 Mon Sep 17 00:00:00 2001
From: frief <frief@4a8a32a2-be11-0410-ad9d-d568d2c75423>
Date: Fri, 22 Oct 2004 14:52:59 +0000
Subject: [PATCH] zeroing data from acculator after jnz comparison

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@3553 4a8a32a2-be11-0410-ad9d-d568d2c75423
---
 src/mcs51/peeph.def | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/src/mcs51/peeph.def b/src/mcs51/peeph.def
index 8fa20f57..e6540fcf 100644
--- a/src/mcs51/peeph.def
+++ b/src/mcs51/peeph.def
@@ -3418,6 +3418,30 @@ replace {
 %2:
 } if labelRefCount %2 0
 
+// applies to f.e. malloc.c
+replace {
+	jnz	%1
+%2:
+	mov	%3,#0x00
+	mov	%4,#0x00
+} by {
+	;	Peephole 256.c	loading %3,%4 with zero from a
+	jnz	%1
+	mov	%3,a
+	mov	%4,a
+} if labelRefCount %2 0
+
+// applies to f.e. bug-905492.c
+replace {
+	jnz	%1
+%2:
+	mov	%3,#0x00
+} by {
+	;	Peephole 256.d	loading %3 with zero from a
+	jnz	%1
+	mov	%3,a
+} if labelRefCount %2 0
+
 
 // unsigned char i=8; do{ } while(--i != 0);
 // this currently only applies if i is kept in a register
-- 
2.47.2