SelectionDAGDumper: Avoid unnecessary newlines

[MatzeB]

Summary

Before:

t0 = EntryToken:ch

  t0: <multiple use>
      t0: <multiple use>
    t1 = CopyFromReg:v4f32,ch t0, Register:v4f32  %vreg0

    t25 = IMPLICIT_DEF:v4f32

  t26 = HADDPSrr:v4f32 t1, t25

t23 = CopyToReg:ch,glue t0, Register:v4f32  %XMM0, t26

  t23: <multiple use>
  t23: <multiple use>
t24 = RETQ:ch Register:v4f32  %XMM0, t23, t23:1

After:

  t0: <multiple use>
      t0: <multiple use>
    t1 = CopyFromReg:v4f32,ch t0, Register:v4f32  %vreg0
  t26 = X86ISD::FHADD:v4f32 t1, undef:v4f32
t23 = CopyToReg:ch,glue t0, Register:v4f32  %XMM0, t26
  t23: <multiple use>
  t21 = TargetConstant:i16<0>
  t23: <multiple use>
t24 = X86ISD::RET_FLAG:ch t23, t21, Register:v4f32  %XMM0, t23:1

[MatzeB]

ping

[resistor]

LGTM.

llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp

void SDNode::print_details(raw_ostream &OS, const SelectionDAG *G) const {
   }
 }
 
 static void DumpNodes(const SDNode *N, unsigned indent, const SelectionDAG *G) {
   for (const SDValue &Op : N->op_values())
     if (Op.getNode()->hasOneUse())
       DumpNodes(Op.getNode(), indent+2, G);
     else
-      dbgs() << "\n" << std::string(indent+2, ' ')
-             << PrintNodeId(*Op.getNode()) << ": <multiple use>";
+      dbgs() << std::string(indent+2, ' ')
+             << PrintNodeId(*Op.getNode()) << ": <multiple use>\n";
 
-  dbgs() << '\n';
   dbgs().indent(indent);
   N->dump(G);
 }
 
 void SelectionDAG::dump() const {
-  dbgs() << "SelectionDAG has " << AllNodes.size() << " nodes:";
+  dbgs() << "SelectionDAG has " << AllNodes.size() << " nodes:\n";
 
   for (allnodes_const_iterator I = allnodes_begin(), E = allnodes_end();
        I != E; ++I) {
     const SDNode *N = I;
     if (!N->hasOneUse() && N != getRoot().getNode())
       DumpNodes(N, 2, this);
   }