Fix typo.

llvm-svn: 234706
diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
index ef0c10f..7c239cb 100644
--- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
+++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp
@@ -1502,7 +1502,7 @@
     if (isa<DbgInfoIntrinsic>(I))
       continue;
 
-    // Only speculatively execution a single instruction (not counting the
+    // Only speculatively execute a single instruction (not counting the
     // terminator) for now.
     ++SpeculationCost;
     if (SpeculationCost > 1)