[Pipeliner] Test commit: fixed spelling mistake in comments

lib/CodeGen/MachinePipeliner.cpp

 //===- MachinePipeliner.cpp - Machine Software Pipeliner Pass -------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
 // An implementation of the Swing Modulo Scheduling (SMS) software pipeliner.
 //
 // Software pipelining (SWP) is an instruction scheduling technique for loops
-// that overlap loop iterations and explioits ILP via a compiler transformation.
+// that overlap loop iterations and exploits ILP via a compiler transformation.
 //
 // Swing Modulo Scheduling is an implementation of software pipelining
 // that generates schedules that are near optimal in terms of initiation
 // interval, register requirements, and stage count. See the papers:
 //
 // "Swing Modulo Scheduling: A Lifetime-Sensitive Approach", by J. Llosa,
 // A. Gonzalez, E. Ayguade, and M. Valero. In PACT '96 Processings of the 1996
 // Conference on Parallel Architectures and Compilation Techiniques.