Typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163154 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 235cf96..5e5ed0b 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -1318,7 +1318,7 @@
   // Ignore stuff that we obviously can't move.
   //
   // Treat volatile loads as stores. This is not strictly necessary for
-  // volatiles, but it is required for atomic loads. It is now allowed to move
+  // volatiles, but it is required for atomic loads. It is not allowed to move
   // a load across an atomic load with Ordering > Monotonic.
   if (mayStore() || isCall() ||
       (mayLoad() && hasOrderedMemoryRef())) {