Register Optimizer was ignoring volatility of SFRs

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

diff --git a/src/pic/peeph.def b/src/pic/peeph.def
index be2cd557dab2b2d474a8cd39592b887a8cf60d3a..1ffe50d88d13263fc9f0b52d6e264444ce5d3938 100644 (file)
--- a/src/pic/peeph.def
+++ b/src/pic/peeph.def
@@ -164,7 +164,7 @@ replace restart {
 replace restart {
        decf    %1,f
        movf    %1,w
-       btfss   status,z
+       btfss   _STATUS,z
        goto    %2
 } by {
        ; peep 3 - decf/mov/skpz to decfsz
@@ -223,7 +223,17 @@ replace restart {
        movf    %2,w
        xorwf   %1,w
 } by {
-       ; peep 9 - Removed redundant move
+       ; peep 9a - Removed redundant move
        movwf   %1
        xorwf   %2,w
 }
+
+replace restart {
+       movwf   %1
+       movf    %2,w
+       iorwf   %1,w
+} by {
+       ; peep 9b - Removed redundant move
+       movwf   %1
+       iorwf   %2,w
+}