More enhancements to register optimization algorithms.

[fw/sdcc] / src / pic / peeph.def

diff --git a/src/pic/peeph.def b/src/pic/peeph.def
index 09923399983d64151f94024ef1d9caf26390472f..be2cd557dab2b2d474a8cd39592b887a8cf60d3a 100644 (file)
--- a/src/pic/peeph.def
+++ b/src/pic/peeph.def
@@ -199,3 +199,31 @@ replace restart {
        ; peep 6 - Removed redundant move
        movwf   %1
 }
+
+replace restart {
+       movlw   0
+       iorwf   %1,w
+} by {
+       ; peep 7 - Removed redundant move
+       movf    %1,w
+}
+
+replace restart {
+       movf    %1,w
+       movwf   %2
+       decf    %2,f
+} by {
+       ; peep 8 - Removed redundant move
+       decf    %1,w
+       movwf   %2
+}
+
+replace restart {
+       movwf   %1
+       movf    %2,w
+       xorwf   %1,w
+} by {
+       ; peep 9 - Removed redundant move
+       movwf   %1
+       xorwf   %2,w
+}