Fix typo

Author: kasuga-fj

llvm/include/llvm/CodeGen/MachinePipeliner.h

@@ -118,7 +118,7 @@ class MachinePipeliner : public MachineFunctionPass {
   bool useWindowScheduler(bool Changed);
 };
 
-/// Represents a dependnece between two instruction.
+/// Represents a dependence between two instruction.
 class SwingSchedulerDDGEdge {
   SUnit *Dst = nullptr;
   SDep Pred;

llvm/lib/CodeGen/MachinePipeliner.cpp

@@ -1894,7 +1894,7 @@ static bool pred_L(SetVector<SUnit *> &NodeOrder,
 
     // FIXME: The following loop-carried dependencies may also need to be
     // considered.
-    //   - Physical register dependnecies (true-dependnece and WAW).
+    //   - Physical register dependencies (true-dependence and WAW).
     //   - Memory dependencies.
     for (const auto &OE : DDG->getOutEdges(SU)) {
       SUnit *SuccSU = OE.getDst();