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 9fd073d688f13fdb31038f39d1442acba74e4943..5090d4b8f45c3d20fd4b3461426eab013995c83c 100644 (file)
--- a/src/z80/peeph.def
+++ b/src/z80/peeph.def
@@ -1,5 +1,110 @@
-replace restart {
+replace {
+       ld (hl),(hl)
+} by {
+       ERROR - peephole - caught (hl),(hl)
+}
+replace {
        ld %1,%1
 } by {
-       ; Removed redundent load
+        ; Removed redundent load
+}
+replace restart {
+       xor a,a
+       or a,%1
+       or a,a
+       jp %2,%3
+} by {
+       xor     a,a
+       or      a,%1
+       jp      %2,%3
+}
+replace restart {
+       cp a,#0x00
+       jp nz,%1
+} by {
+       or      a,a
+       jp      nz,%1
+}
+replace restart {
+       jp nz,%1
+       jp      %2
+%1:
+       jp      %3
+%2:
+} by {
+       jp      z,%2
+%1:
+       jp      %3
+%2:
+}
+replace restart {
+       jp      nz,%1
+       jp      %2
+%1:
+} by {
+       jp      z,%2
+%1:
+}
+replace restart {
+       jp      z,%1
+       jp      %2
+%1:
+} by {
+       jp      nz,%2
+%1:
+}
+replace restart {
+       or      a,%1
+       or      a,a
+} by {
+       or      a,%1
+}
+replace restart {
+       or      a,%1)
+        or      a,a
+} by {
+       or      a,%1)
+}
+replace restart {
+       xor     a,a
+       or      a,%1
+       jp      nz,%2
+       xor     a,a
+       or      a,%3
+       jp      z,%2
+} by {
+       xor     a,a
+       or      a,%1
+       jp      nz,%2
+       or      a,%3
+       jp      z,%2
+}
+replace restart {
+       jp      nz,%1
+       inc     %3)
+%1:
+       jp      %2
+} by {
+       jp      nz,%2
+       inc     %3)
+%1:
+       jp      %2
+}
+replace restart {
+       xor     a,a
+       ld      a,#0x00
+} 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
 }