Fix a lot of typos. NFC.

llvm-svn: 304974
diff --git a/polly/lib/CodeGen/CodeGeneration.cpp b/polly/lib/CodeGen/CodeGeneration.cpp
index aad2ca1..b60cc7c 100644
--- a/polly/lib/CodeGen/CodeGeneration.cpp
+++ b/polly/lib/CodeGen/CodeGeneration.cpp
@@ -10,7 +10,7 @@
 // The CodeGeneration pass takes a Scop created by ScopInfo and translates it
 // back to LLVM-IR using the ISL code generator.
 //
-// The Scop describes the high level memory behaviour of a control flow region.
+// The Scop describes the high level memory behavior of a control flow region.
 // Transformation passes can update the schedule (execution order) of statements
 // in the Scop. ISL is used to generate an abstract syntax tree that reflects
 // the updated execution order. This clast is used to create new LLVM-IR that is
@@ -253,7 +253,7 @@
 
   CodeGeneration() : ScopPass(ID) {}
 
-  /// The datalayout used
+  /// The data layout used.
   const DataLayout *DL;
 
   /// @name The analysis passes we need to generate code.