diff --git a/include/llvm/Target/TargetSelectionDAG.td b/include/llvm/Target/TargetSelectionDAG.td
index 216416baa93..2d822de4ad6 100644
--- a/include/llvm/Target/TargetSelectionDAG.td
+++ b/include/llvm/Target/TargetSelectionDAG.td
@@ -205,7 +205,7 @@ def SDTPrefetch : SDTypeProfile<0, 4, [     // prefetch
   SDTCisPtrTy<0>, SDTCisSameAs<1, 2>, SDTCisSameAs<1, 3>, SDTCisInt<1>
 ]>;
 
-def SDTMemBarrier : SDTypeProfile<0, 5, [   // memory barier
+def SDTMemBarrier : SDTypeProfile<0, 5, [   // memory barrier
   SDTCisSameAs<0,1>,  SDTCisSameAs<0,2>,  SDTCisSameAs<0,3>, SDTCisSameAs<0,4>,
   SDTCisInt<0>
 ]>;
diff --git a/lib/Target/R600/SIInsertWaits.cpp b/lib/Target/R600/SIInsertWaits.cpp
index 173332674ff..7dfc31bdfa0 100644
--- a/lib/Target/R600/SIInsertWaits.cpp
+++ b/lib/Target/R600/SIInsertWaits.cpp
@@ -273,17 +273,17 @@ bool SIInsertWaits::insertWait(MachineBasicBlock &MBB,
       continue;
 
     NeedWait = true;
-    
+
     if (Ordered[i]) {
       unsigned Value = LastIssued.Array[i] - Required.Array[i];
 
-      // adjust the value to the real hardware posibilities
+      // Adjust the value to the real hardware possibilities.
       Counts.Array[i] = std::min(Value, WaitCounts.Array[i]);
 
     } else
       Counts.Array[i] = 0;
 
-    // Remember on what we have waited on
+    // Remember on what we have waited on.
     WaitedOn.Array[i] = LastIssued.Array[i] - Counts.Array[i];
   }