fixed bug #460010

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

diff --git a/src/mcs51/ralloc.c b/src/mcs51/ralloc.c
index 6b9c977a9b09c35e22fa2eddc33487e883e89772..aaa47ce21bdd617cc95e56ee02f1f7645ca2c96c 100644 (file)
--- a/src/mcs51/ralloc.c
+++ b/src/mcs51/ralloc.c
@@ -1432,6 +1432,7 @@ regTypeNum ()
              (ic = hTabItemWithKey (iCodehTab,
                                     bitVectFirstBit (sym->defs))) &&
              POINTER_GET (ic) &&
+             !sym->noSpilLoc &&
              !IS_BITVAR (sym->etype))
            {
 
@@ -2139,6 +2140,10 @@ packRegsForAccUse (iCode * ic)
       IC_LEFT (uic)->key != IC_RESULT (ic)->key)
     return;
 
+#if 0
+  // this is too dangerous and need further restrictions
+  // see bug #447547
+
   /* if one of them is a literal then we can */
   if ((IC_LEFT (uic) && IS_OP_LITERAL (IC_LEFT (uic))) ||
       (IC_RIGHT (uic) && IS_OP_LITERAL (IC_RIGHT (uic))))
@@ -2146,6 +2151,7 @@ packRegsForAccUse (iCode * ic)
       OP_SYMBOL (IC_RESULT (ic))->accuse = 1;
       return;
     }
+#endif
 
   /* if the other one is not on stack then we can */
   if (IC_LEFT (uic)->key == IC_RESULT (ic)->key &&