[LICM] Suppress a compiler warning noticed by one of the bots

llvm-svn: 339388
diff --git a/llvm/lib/Transforms/Scalar/LICM.cpp b/llvm/lib/Transforms/Scalar/LICM.cpp
index dbb9bc6..4150d9f 100644
--- a/llvm/lib/Transforms/Scalar/LICM.cpp
+++ b/llvm/lib/Transforms/Scalar/LICM.cpp
@@ -697,6 +697,7 @@
     if (!UniqueI)
       // other memory op, give up
       return false;
+    (void)FI; //suppress unused variable warning
     assert(UniqueI == FI && "AS must contain FI");
     return true;
   }