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/RegAllocPBQP.cpp b/llvm/lib/CodeGen/RegAllocPBQP.cpp
index 101b30b..e4a0217 100644
--- a/llvm/lib/CodeGen/RegAllocPBQP.cpp
+++ b/llvm/lib/CodeGen/RegAllocPBQP.cpp
@@ -840,7 +840,8 @@
   });
 }
 
-void PBQP::RegAlloc::PBQPRAGraph::dump(raw_ostream &OS) const {
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+LLVM_DUMP_METHOD void PBQP::RegAlloc::PBQPRAGraph::dump(raw_ostream &OS) const {
   for (auto NId : nodeIds()) {
     const Vector &Costs = getNodeCosts(NId);
     assert(Costs.getLength() != 0 && "Empty vector in graph.");
@@ -861,7 +862,10 @@
   }
 }
 
-LLVM_DUMP_METHOD void PBQP::RegAlloc::PBQPRAGraph::dump() const { dump(dbgs()); }
+LLVM_DUMP_METHOD void PBQP::RegAlloc::PBQPRAGraph::dump() const {
+  dump(dbgs());
+}
+#endif
 
 void PBQP::RegAlloc::PBQPRAGraph::printDot(raw_ostream &OS) const {
   OS << "graph {\n";