* doc/Makefile,

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

diff --git a/src/z80/peeph.def b/src/z80/peeph.def
index ee3597876774958cbecbefd1aae2be36fa12f299..1ff4aa80724b561c4a236ad278e6d9154edc894d 100644 (file)
--- a/src/z80/peeph.def
+++ b/src/z80/peeph.def
@@ -6,7 +6,7 @@ replace {
 replace restart {
        ld %1,%1
 } by {
-        ; Removed redundent load
+       ; Removed redundent load
 }
 replace restart {
        xor a,a
@@ -94,26 +94,32 @@ replace restart {
        xor     a,a
        ld      a,#0x00
 } by {
-        xor     a,a
+       xor     a,a
 }
 replace {
-        ld      e,#0x00
-        ld      d,#0x00
+       ld      e,#0x00
+       ld      d,#0x00
 } by {
-        ld      de,#0x0000
+       ld      de,#0x0000
 }
 replace {
        ld      l,#0x00
        ld      h,#0x00
 } by {
-        ld      hl,#0x0000
+       ld      hl,#0x0000
+}
+replace {
+       ld      c,#0x00
+       ld      b,#0x00
+} by {
+       ld      bc,#0x0000
 }
 replace restart {
        ld      %1,a
        ld      a,%1
 } by {
-        ld     %1,a
-}
+       ld      %1,a
+} if notVolatile %1
 replace restart {
        jp      %1,%2
        jr      %3
@@ -133,14 +139,14 @@ replace {
        ld      h,b
        push    hl
 } by {
-        push   de
-        push    bc
+       push    de
+       push    bc
 }
 replace {
        and     a,#%1
        or      a,a
 } by {
-        and     a,#%1
+       and     a,#%1
 }
 replace {
        ld      b,l
@@ -167,16 +173,16 @@ replace {
        push    af
        inc     sp
 } by {
-        push    bc
-        inc     sp
+       push    bc
+       inc     sp
 }
 replace {
        ld      a,d
        push    af
        inc     sp
 } by {
-        push    de
-        inc     sp
+       push    de
+       inc     sp
 }
 replace {
        ld      a,%1
@@ -201,3 +207,13 @@ replace {
        ld      e,l
        ld      d,h
 }
+replace {
+       ld      %1,%2
+       ld      %3,%4
+       ld      %2,%1
+       ld      %4,%3
+} by {
+       ld      %1,%2
+       ld      %3,%4
+}
+