2001-10-21 Michael Hope <michaelh@juju.net.nz>

[fw/sdcc] / src / z80 / peeph.def

diff --git a/src/z80/peeph.def b/src/z80/peeph.def
index 00375bed908c6e805d7da9ff135fa021a033673d..5090d4b8f45c3d20fd4b3461426eab013995c83c 100644 (file)
--- a/src/z80/peeph.def
+++ b/src/z80/peeph.def
@@ -1,12 +1,12 @@
-replace restart {
+replace {
        ld (hl),(hl)
 } by {
        ERROR - peephole - caught (hl),(hl)
 }
-replace restart {
+replace {
        ld %1,%1
 } by {
-       ; Rule 1: Removed redundent load
+        ; Removed redundent load
 }
 replace restart {
        xor a,a
@@ -22,7 +22,6 @@ replace restart {
        cp a,#0x00
        jp nz,%1
 } by {
-        ; Rule 3: Changed cp #0 to or
        or      a,a
        jp      nz,%1
 }
@@ -33,7 +32,6 @@ replace restart {
        jp      %3
 %2:
 } by {
-       ; Rule 4: Changed jp order
        jp      z,%2
 %1:
        jp      %3
@@ -44,7 +42,6 @@ replace restart {
        jp      %2
 %1:
 } by {
-       ; Rule 5: Changed jump logic
        jp      z,%2
 %1:
 }
@@ -53,7 +50,6 @@ replace restart {
        jp      %2
 %1:
 } by {
-       ; Rule 6: Changed jump logic
        jp      nz,%2
 %1:
 }
@@ -61,14 +57,12 @@ replace restart {
        or      a,%1
        or      a,a
 } by {
-       ; Rule 7: Removed redundent or
        or      a,%1
 }
 replace restart {
        or      a,%1)
         or      a,a
 } by {
-       ; Rule 8: Removed redundent or for (ix)
        or      a,%1)
 }
 replace restart {
@@ -102,3 +96,15 @@ replace restart {
 } by {
         xor     a,a
 }
+replace restart {
+        ld      e,#0x00
+        ld      d,#0x00
+} by {
+        ld      de,#0x0000
+}
+replace restart {
+       ld      %1,a
+       ld      a,%1
+} by {
+        ld     %1,a
+}