Rename SDep's isSpecial to isArtificial, to make this field a little
less mysterious.

llvm-svn: 59782
diff --git a/llvm/lib/CodeGen/ScheduleDAG.cpp b/llvm/lib/CodeGen/ScheduleDAG.cpp
index cf9896b..046d337 100644
--- a/llvm/lib/CodeGen/ScheduleDAG.cpp
+++ b/llvm/lib/CodeGen/ScheduleDAG.cpp
@@ -188,7 +188,7 @@
       else
         cerr << "   val #";
       cerr << I->Dep << " - SU(" << I->Dep->NodeNum << ")";
-      if (I->isSpecial)
+      if (I->isArtificial)
         cerr << " *";
       cerr << "\n";
     }
@@ -202,7 +202,7 @@
       else
         cerr << "   val #";
       cerr << I->Dep << " - SU(" << I->Dep->NodeNum << ")";
-      if (I->isSpecial)
+      if (I->isArtificial)
         cerr << " *";
       cerr << "\n";
     }