From b8a9a05b47ebf7b87ba7d1bada2d386da1c137e6 Mon Sep 17 00:00:00 2001
From: MaartenBrock <MaartenBrock@4a8a32a2-be11-0410-ad9d-d568d2c75423>
Date: Fri, 26 Oct 2007 20:07:53 +0000
Subject: [PATCH] * src/mcs51/peeph.def: added new rules 265 - 270

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@4942 4a8a32a2-be11-0410-ad9d-d568d2c75423
---
 ChangeLog           |  3 +-
 src/mcs51/peeph.def | 79 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 81 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 285bc22a..b128a229 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 2007-10-26 Maarten Brock <sourceforge.brock AT dse.nl>
 
-	* src/mcs51/peeph.def: moved rules 257.x to 253.x and re-enabled 253.b
+	* src/mcs51/peeph.def: moved rules 257.x to 253.x and re-enabled 253.b,
+	  added new rules 265 - 270
 	* support/regression/tests/bug1721024.c:new, added
 
 2007-10-25 Maarten Brock <sourceforge.brock AT dse.nl>
diff --git a/src/mcs51/peeph.def b/src/mcs51/peeph.def
index 66909c94..92570a59 100644
--- a/src/mcs51/peeph.def
+++ b/src/mcs51/peeph.def
@@ -4582,6 +4582,85 @@ replace {
 } if labelRefCount(%3 1), labelRefCountChange(%3 -1)
 
 
+replace {
+	mov	%1,c
+	cpl	%1
+} by {
+	;	Peephole 265	optimized mov/cpl sequence (carry differs)
+	cpl	c
+	mov	%1,c
+} if notVolatile(%1)
+
+replace {
+	mov	%1,c
+	jb	%1,%2
+} by {
+	;	Peephole 266.a	optimized mov/jump sequence
+	mov	%1,c
+        jc	%2
+} if notVolatile(%1)
+
+replace {
+	mov	%1,c
+	jnb	%1,%2
+} by {
+	;	Peephole 266.b	optimized mov/jump sequence
+	mov	%1,c
+        jnc	%2
+} if notVolatile(%1)
+
+replace {
+	jnc	%1
+	setb	%2
+	sjmp	%3
+%1:
+	clr	%2
+%3:
+} by {
+	;	Peephole 267.a	optimized mov bit sequence
+	mov	%2,c
+%1:
+%3:
+} if labelRefCount(%1 1), labelRefCountChange(%1 -1), labelRefCountChange(%3 -1)
+
+replace {
+	jc	%1
+	clr	%2
+	sjmp	%3
+%1:
+	setb	%2
+%3:
+} by {
+	;	Peephole 267.b	optimized mov bit sequence
+	mov	%2,c
+%1:
+%3:
+} if labelRefCount(%1 1), labelRefCountChange(%1 -1), labelRefCountChange(%3 -1)
+
+replace {
+	mov	%1,c
+	mov	%1,c
+} by {
+	;	Peephole 268	removed redundant mov
+	mov	%1,c
+} if notVolatile(%1)
+
+replace {
+	mov	%1,c
+	mov	c,%1
+} by {
+	;	Peephole 269	removed redundant mov
+	mov	%1,c
+} if notVolatile(%1)
+
+//accessing struct/array on stack
+replace {
+	add	a,#%1
+	add	a,#%2
+} by {
+	;	Peephole 270	removed redundant add
+	add	a,#%1+%2
+}
 replace restart {
 	pop	ar%1
 } by {
-- 
2.30.2