Eliminate the RegSDNode class, which 3 nodes (CopyFromReg/CopyToReg/ImplicitDef)

used to tack a register number onto the node.

Instead of doing this, make a new node, RegisterSDNode, which is a leaf
containing a register number.  These three operations just become normal
DAG nodes now, instead of requiring special handling.

Note that with this change, it is no longer correct to make illegal
CopyFromReg/CopyToReg nodes.  The legalizer will not touch them, and this
is bad, so don't do it. :)

llvm-svn: 22806

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
index a60acc12080..20cec1f11d8 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
@@ -72,8 +72,8 @@ std::string DOTGraphTraits<SelectionDAG*>::getNodeLabel(const SDNode *Node,
     if (LBB)
       Op += LBB->getName();
     //Op += " " + (const void*)BBDN->getBasicBlock();
-  } else if (const RegSDNode *C2V = dyn_cast<RegSDNode>(Node)) {
-    Op += " #" + utostr(C2V->getReg());
+  } else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(Node)) {
+    Op += " #" + utostr(R->getReg());
   } else if (const ExternalSymbolSDNode *ES =
              dyn_cast<ExternalSymbolSDNode>(Node)) {
     Op += "'" + std::string(ES->getSymbol()) + "'";