Make the logic for determining function alignment more explicit.  No functionality change.

llvm-svn: 131012
diff --git a/llvm/lib/Target/PTX/PTXISelLowering.cpp b/llvm/lib/Target/PTX/PTXISelLowering.cpp
index 23b93da..e9b1d8c 100644
--- a/llvm/lib/Target/PTX/PTXISelLowering.cpp
+++ b/llvm/lib/Target/PTX/PTXISelLowering.cpp
@@ -65,7 +65,9 @@
   
   // need to lower SETCC of Preds into bitwise logic
   setOperationAction(ISD::SETCC, MVT::i1, Custom);
-  
+
+  setMinFunctionAlignment(2);
+
   // Compute derived properties from the register classes
   computeRegisterProperties();
 }