Add support for the isLoad and isStore flags, needed by the instruction scheduler

llvm-svn: 16554
diff --git a/llvm/utils/TableGen/CodeGenInstruction.h b/llvm/utils/TableGen/CodeGenInstruction.h
index 8551a55..82df28a 100644
--- a/llvm/utils/TableGen/CodeGenInstruction.h
+++ b/llvm/utils/TableGen/CodeGenInstruction.h
@@ -71,6 +71,8 @@
     bool isBranch;
     bool isBarrier;
     bool isCall;
+    bool isLoad;
+    bool isStore;
     bool isTwoAddress;
     bool isTerminator;
     bool hasDelaySlot;