* src/SDCCglobl.h,

[fw/sdcc] / src / mcs51 / peeph.def

diff --git a/src/mcs51/peeph.def b/src/mcs51/peeph.def
index 146a39f02d6189364d00fa0e545f81d0ff81c273..168866f13b164f8370f7ef32050ccaa33025813b 100644 (file)
--- a/src/mcs51/peeph.def
+++ b/src/mcs51/peeph.def
@@ -1483,15 +1483,15 @@ replace {
        mov     %1,a
 } if notVolatile %1
 
-replace {
-// acc being incremented might cause problems
-       mov     %1,a
-       inc     %1
-} by {
-       ;       Peephole 185    changed order of increment (acc incremented also!)
-       inc     a
-       mov     %1,a
-} if notVolatile %1
+//replace {
+// acc being incremented might cause problems with register tracking
+//     mov     %1,a
+//     inc     %1
+//} by {
+//     ;       Peephole 185    changed order of increment (acc incremented also!)
+//     inc     a
+//     mov     %1,a
+//} if notVolatile %1
 
 // char indexed access to: long code table[] = {4,3,2,1};
 replace restart {
@@ -1690,15 +1690,26 @@ replace {
        ;       Peephole 191    removed redundant mov
 } if notVolatile %1
 
+// applies to f.e. regression/ports/mcs51/support.c
 replace {
        mov     r%1,a
        mov     @r%2,ar%1
 } by {
        mov     r%1,a
-       ;       Peephole 192    used a instead of ar%1 as source
+       ;       Peephole 192.a  used a instead of ar%1 as source
        mov     @r%2,a
 }
 
+// applies to f.e. printf_large.c
+replace {
+       mov     ar%1,@r%2
+       mov     a,r%1
+} by {
+       ;       Peephole 192.b  used a instead of ar%1 as destination
+       mov     a,@r%2
+       mov     r%1,a
+}
+
 replace {
        jnz     %3
        mov     a,%4