fixed bug #460010

[fw/sdcc] / src / mcs51 / gen.c

diff --git a/src/mcs51/gen.c b/src/mcs51/gen.c
index ac2e391e6b35a5f6d3b4b02dc129ffbf928c71a8..f239639daf51e9c5b896594c463f1bcd8d3c2876 100644 (file)
--- a/src/mcs51/gen.c
+++ b/src/mcs51/gen.c
@@ -4218,7 +4218,7 @@ hasInc (operand *op, iCode *ic)
       return lic;
     }
     /* if the operand used or deffed */
-    if (bitVectBitValue(ic->uses,op->key) || (unsigned) ic->defKey == op->key) {
+    if (bitVectBitValue(OP_USES(op),lic->key) || (unsigned) lic->defKey == op->key) {
       return NULL;
     }
     lic = lic->next;
@@ -5262,6 +5262,12 @@ genRRC (iCode * ic)
   /* move it to the result */
   size = AOP_SIZE (result);
   offset = size - 1;
+  if (size == 1) { /* special case for 1 byte */
+      l = aopGet (AOP (left), offset, FALSE, FALSE);
+      MOVA (l);
+      emitcode ("rr", "a");
+      goto release;
+  }
   CLRC;
   while (size--)
     {
@@ -5279,6 +5285,7 @@ genRRC (iCode * ic)
       MOVA (l);
     }
   emitcode ("mov", "acc.7,c");
+ release:
   aopPut (AOP (result), "a", AOP_SIZE (result) - 1);
   freeAsmop (left, NULL, ic, TRUE);
   freeAsmop (result, NULL, ic, TRUE);
@@ -5307,6 +5314,10 @@ genRLC (iCode * ic)
     {
       l = aopGet (AOP (left), offset, FALSE, FALSE);
       MOVA (l);
+      if (size == 0) { /* special case for 1 byte */
+             emitcode("rl","a");
+             goto release;
+      }
       emitcode ("add", "a,acc");
       if (AOP_SIZE (result) > 1)
        aopPut (AOP (result), "a", offset++);
@@ -5327,6 +5338,7 @@ genRLC (iCode * ic)
       MOVA (l);
     }
   emitcode ("mov", "acc.0,c");
+ release:
   aopPut (AOP (result), "a", 0);
   freeAsmop (left, NULL, ic, TRUE);
   freeAsmop (result, NULL, ic, TRUE);