[CodeGen] Take a MachineMemOperand::Flags in MachineFunction::getMachineMemOperand.

Summary:
Previously we took an unsigned.

Hooray for type-safety.

Reviewers: chandlerc

Subscribers: dsanders, llvm-commits

Differential Revision: http://reviews.llvm.org/D22282

llvm-svn: 275591
diff --git a/llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp b/llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp
index cbae108..25b2aff 100644
--- a/llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp
+++ b/llvm/lib/Target/Hexagon/HexagonSplitDouble.cpp
@@ -642,7 +642,7 @@
   MachineFunction &MF = *B.getParent();
   for (auto &MO : MI->memoperands()) {
     const MachinePointerInfo &Ptr = MO->getPointerInfo();
-    unsigned F = MO->getFlags();
+    MachineMemOperand::Flags F = MO->getFlags();
     int A = MO->getAlignment();
 
     auto *Tmp1 = MF.getMachineMemOperand(Ptr, F, 4/*size*/, A);