* src/SDCClrange.c (computeClash): fixed bug #971834

[fw/sdcc] / src / SDCClrange.c

diff --git a/src/SDCClrange.c b/src/SDCClrange.c
index 1c2c8493d53d05ad8217944d321e8fbd1d788579..fe7eadc6c14524451ecc6fbd8f03c7a1d9791ad6 100644 (file)
--- a/src/SDCClrange.c
+++ b/src/SDCClrange.c
@@ -535,7 +535,9 @@ 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 +547,9 @@ 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)