* device/lib/Makefile.in: fixed bug in target objects-pic16,

[fw/sdcc] / src / SDCClrange.c

diff --git a/src/SDCClrange.c b/src/SDCClrange.c
index 1c2c8493d53d05ad8217944d321e8fbd1d788579..ddf84ae8251d18e77308fd548a34bec3ccf7b0fc 100644 (file)
--- a/src/SDCClrange.c
+++ b/src/SDCClrange.c
@@ -219,7 +219,8 @@ findNextUseSym (eBBlock *ebp, iCode *ic, symbol * sym)
   if (ebp->visited)
     return 0;
 
-  ebp->visited = 1;
+  if (ic == ebp->sch)
+    ebp->visited = 1;
 
   /* for all remaining instructions in current block */
   for (uic = ic; uic; uic = uic->next)
@@ -535,7 +536,9 @@ computeClash (eBBlock ** ebbs, int count)
                      IS_ITEMP(IC_RESULT(ic)) &&
                      (IS_ITEMP(IC_LEFT(ic)) || IS_ITEMP(IC_RIGHT(ic))))
                    {
-                     if (OP_SYMBOL(IC_RESULT(ic))->key == key1)
+                     if (OP_SYMBOL(IC_RESULT(ic))->key == key1
+                         && sym1->liveFrom == ic->seq
+                         && sym2->liveTo == ic->seq)
                        {
                          if (IS_SYMOP(IC_LEFT(ic)))
                            if (OP_SYMBOL(IC_LEFT(ic))->key == key2)
@@ -545,7 +548,9 @@ computeClash (eBBlock ** ebbs, int count)
                              continue;
                        }
 
-                     if (OP_SYMBOL(IC_RESULT(ic))->key == key2)
+                     if (OP_SYMBOL(IC_RESULT(ic))->key == key2
+                         && sym2->liveFrom == ic->seq
+                         && sym1->liveTo == ic->seq)
                        {
                          if (IS_SYMOP(IC_LEFT(ic)))
                            if (OP_SYMBOL(IC_LEFT(ic))->key == key1)