Added some more peephole rules

git-svn-id: https://sdcc.svn.sourceforge.net/svnroot/sdcc/trunk/sdcc@1982 4a8a32a2-be11-0410-ad9d-d568d2c75423

diff --git a/src/ds390/peeph.def b/src/ds390/peeph.def
index 812d288bade3e58edc6ec0bbe0e2347f8793c4a0..91d7579a4891926f18a27fa3ba75c19dcbe706ee 100644 (file)
--- a/src/ds390/peeph.def
+++ b/src/ds390/peeph.def
@@ -2114,7 +2114,7 @@ replace {
        mov     r%4,a
        movx    @dptr,a
 }
-
+       
 replace {
        mov     r%1,dpl
        mov     r%2,dph
@@ -2129,6 +2129,76 @@ replace {
        mov     r%3,dpx
 }
 
+replace {
+        mov     dpl,r%1
+        mov     dph,r%2
+        mov     dpx,r%3
+        movx    a,@dptr
+        mov     r%4,a
+        orl     ar%4,#%5
+        mov     dpl,r%1
+        mov     dph,r%2
+        mov     dpx,r%3
+        mov     a,r1
+        movx    @dptr,a
+} by {
+       ; Peephole 230.e save reload dptr
+        mov     dpl,r%1
+        mov     dph,r%2
+        mov     dpx,r%3
+        movx    a,@dptr
+        orl     a,#%5
+        mov     r%4,a
+        movx    @dptr,a
+}
+       
+replace {
+        mov     dpl,r%1
+        mov     dph,r%2
+        mov     dpx,r%3
+        movx    a,@dptr
+        mov     r%4,a
+        anl     ar%4,#%5
+        mov     dpl,r%1
+        mov     dph,r%2
+        mov     dpx,r%3
+        mov     a,r1
+        movx    @dptr,a
+} by {
+       ; Peephole 230.e save reload dptr
+        mov     dpl,r%1
+        mov     dph,r%2
+        mov     dpx,r%3
+        movx    a,@dptr
+        anl     a,#%5
+        mov     r%4,a
+        movx    @dptr,a
+}
+
+replace {
+       mov     r%1,dpl
+       mov     r%2,dph
+       mov     r%3,dpx
+       mov     a,r%4
+       inc     dps
+       movx    @dptr,a
+       inc     dptr
+       mov     dps,#0
+       mov     dpl,r%1
+       mov     dph,r%2
+       mov     dpx,r%3
+} by {
+       ; Peephole 230.f save reload dptr
+       mov     r%1,dpl
+       mov     r%2,dph
+       mov     r%3,dpx
+       mov     a,r%4
+       inc     dps
+       movx    @dptr,a
+       inc     dptr
+       mov     dps,#0
+}
+       
 replace {
        mov     ar%1,r%2
        mov     ar%3,r%1
@@ -2181,6 +2251,17 @@ replace {
        mov     r%4,a
 } by {
        ; Peehole 232.b simplified xch
-       mov     r%3,#%1
-       mov     r%4,#%2
-}
\ No newline at end of file
+       mov     r%3,#%2
+       mov     r%4,#%1
+}
+
+replace {
+       mov     dpl1,#%1
+       mov     dph1,#(%1 >> 8)
+       mov     dpx1,#(%1 >> 16)
+} by {
+       ; Peephole 233 24 bit load of dptr1
+       inc     dps
+       mov     dptr,#%1
+       dec     dps
+}