Fix typos in comment.

llvm-svn: 360921
diff --git a/llvm/lib/Passes/PassBuilder.cpp b/llvm/lib/Passes/PassBuilder.cpp
index 3fb963f..e4d1527 100644
--- a/llvm/lib/Passes/PassBuilder.cpp
+++ b/llvm/lib/Passes/PassBuilder.cpp
@@ -944,7 +944,7 @@
 
   // Optimize PHIs by speculating around them when profitable. Note that this
   // pass needs to be run after any PRE or similar pass as it is essentially
-  // inserting redudnancies into the progrem. This even includes SimplifyCFG.
+  // inserting redundancies into the program. This even includes SimplifyCFG.
   OptimizePM.addPass(SpeculateAroundPHIsPass());
 
   for (auto &C : OptimizerLastEPCallbacks)