Improve pass documentation and comments.

Patch by Matthijs Kooijman!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50861 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Scalar/LoopDeletion.cpp b/lib/Transforms/Scalar/LoopDeletion.cpp
index 1ea2f6a..02a5ca9 100644
--- a/lib/Transforms/Scalar/LoopDeletion.cpp
+++ b/lib/Transforms/Scalar/LoopDeletion.cpp
@@ -7,10 +7,10 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// This file implements the Dead Loop Elimination Pass.  This pass is
-// responsible for eliminating loops with non-infinite computable trip counts
-// that have no side effects or volatile instructions, and do not contribute
-// to the computation of the function's return value.
+// This file implements the Dead Loop Deletion Pass. This pass is responsible
+// for eliminating loops with non-infinite computable trip counts that have no
+// side effects or volatile instructions, and do not contribute to the
+// computation of the function's return value.
 //
 //===----------------------------------------------------------------------===//