Guard print() functions only used by dump() functions.

Summary:
Since  r293359, most dump() function are only defined when
`!defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)` holds. print() functions
only used by dump() functions are now unused in release builds,
generating lots of warnings. This patch only defines some print()
functions if they are used.

Reviewers: MatzeB

Reviewed By: MatzeB

Subscribers: arsenm, mzolotukhin, nhaehnle, llvm-commits

Differential Revision: https://reviews.llvm.org/D35949

llvm-svn: 309553
diff --git a/llvm/lib/CodeGen/MachinePipeliner.cpp b/llvm/lib/CodeGen/MachinePipeliner.cpp
index 19e9a50..94ab062 100644
--- a/llvm/lib/CodeGen/MachinePipeliner.cpp
+++ b/llvm/lib/CodeGen/MachinePipeliner.cpp
@@ -3960,6 +3960,7 @@
   DEBUG(dump(););
 }
 
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 /// Print the schedule information to the given output.
 void SMSchedule::print(raw_ostream &os) const {
   // Iterate over each cycle.
@@ -3975,7 +3976,6 @@
   }
 }
 
-#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 /// Utility function used for debugging to print the schedule.
 LLVM_DUMP_METHOD void SMSchedule::dump() const { print(dbgs()); }
 #endif