Cleanup dump() functions.

We had various variants of defining dump() functions in LLVM. Normalize
them (this should just consistently implement the things discussed in
http://lists.llvm.org/pipermail/cfe-dev/2014-January/034323.html

For reference:
- Public headers should just declare the dump() method but not use
  LLVM_DUMP_METHOD or #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
- The definition of a dump method should look like this:
  #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
  LLVM_DUMP_METHOD void MyClass::dump() {
    // print stuff to dbgs()...
  }
  #endif

llvm-svn: 293359
diff --git a/llvm/lib/CodeGen/MachinePipeliner.cpp b/llvm/lib/CodeGen/MachinePipeliner.cpp
index 43a1809..f816e27 100644
--- a/llvm/lib/CodeGen/MachinePipeliner.cpp
+++ b/llvm/lib/CodeGen/MachinePipeliner.cpp
@@ -552,7 +552,9 @@
     os << "\n";
   }
 
-  void dump() const { print(dbgs()); }
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+  LLVM_DUMP_METHOD void dump() const { print(dbgs()); }
+#endif
 };
 
 /// This class repesents the scheduled code.  The main data structure is a
@@ -3980,5 +3982,7 @@
   }
 }
 
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 /// Utility function used for debugging to print the schedule.
-void SMSchedule::dump() const { print(dbgs()); }
+LLVM_DUMP_METHOD void SMSchedule::dump() const { print(dbgs()); }
+#endif