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/Transforms/IPO/SampleProfile.cpp b/llvm/lib/Transforms/IPO/SampleProfile.cpp
index 6baada2..c8d07e6 100644
--- a/llvm/lib/Transforms/IPO/SampleProfile.cpp
+++ b/llvm/lib/Transforms/IPO/SampleProfile.cpp
@@ -423,6 +423,7 @@
          0xffff;
 }
 
+#ifndef NDEBUG
 /// \brief Print the weight of edge \p E on stream \p OS.
 ///
 /// \param OS  Stream to emit the output to.
@@ -453,6 +454,7 @@
   uint64_t W = (I == BlockWeights.end() ? 0 : I->second);
   OS << "weight[" << BB->getName() << "]: " << W << "\n";
 }
+#endif
 
 /// \brief Get the weight for an instruction.
 ///
diff --git a/llvm/lib/Transforms/Scalar/GuardWidening.cpp b/llvm/lib/Transforms/Scalar/GuardWidening.cpp
index fb7c6e1..c4aeccb 100644
--- a/llvm/lib/Transforms/Scalar/GuardWidening.cpp
+++ b/llvm/lib/Transforms/Scalar/GuardWidening.cpp
@@ -664,6 +664,7 @@
   return PA;
 }
 
+#ifndef NDEBUG
 StringRef GuardWideningImpl::scoreTypeToString(WideningScore WS) {
   switch (WS) {
   case WS_IllegalOrNegative:
@@ -678,6 +679,7 @@
 
   llvm_unreachable("Fully covered switch above!");
 }
+#endif
 
 char GuardWideningLegacyPass::ID = 0;
 
diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
index 5c8f7e0..bd71769 100644
--- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
+++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp
@@ -195,11 +195,11 @@
 
 } // end anonymous namespace
 
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 void RegSortData::print(raw_ostream &OS) const {
   OS << "[NumUses=" << UsedByIndices.count() << ']';
 }
 
-#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 LLVM_DUMP_METHOD void RegSortData::dump() const {
   print(errs()); errs() << '\n';
 }
@@ -1350,6 +1350,7 @@
   return TTI.isLSRCostLess(C, Other.C);
 }
 
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 void Cost::print(raw_ostream &OS) const {
   if (InsnsCost)
     OS << C.Insns << " instruction" << (C.Insns == 1 ? " " : "s ");
@@ -1370,7 +1371,6 @@
     OS << ", plus " << C.SetupCost << " setup cost";
 }
 
-#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 LLVM_DUMP_METHOD void Cost::dump() const {
   print(errs()); errs() << '\n';
 }
@@ -3859,12 +3859,12 @@
 
 } // end anonymous namespace
 
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 void WorkItem::print(raw_ostream &OS) const {
   OS << "in formulae referencing " << *OrigReg << " in use " << LUIdx
      << " , add offset " << Imm;
 }
 
-#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 LLVM_DUMP_METHOD void WorkItem::dump() const {
   print(errs()); errs() << '\n';
 }
@@ -5364,13 +5364,13 @@
   }
 }
 
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 void LSRInstance::print(raw_ostream &OS) const {
   print_factors_and_types(OS);
   print_fixups(OS);
   print_uses(OS);
 }
 
-#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
 LLVM_DUMP_METHOD void LSRInstance::dump() const {
   print(errs()); errs() << '\n';
 }