add fixme

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21887 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index fa50d4a78974b46bd73822b6db3cd4c2b464ae0d..b8c4315e51260265d24a07341d5c2481e3644f80 100644 (file)
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -306,6 +306,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {
     for (unsigned i = 0, e = Node->getNumOperands(); i != e; ++i) {
       SDOperand Op = Node->getOperand(i);
       // Fold single-use TokenFactor nodes into this token factor as we go.
+      // FIXME: This is something that the DAGCombiner should do!!
       if (Op.getOpcode() == ISD::TokenFactor && Op.hasOneUse()) {
         Changed = true;
         for (unsigned j = 0, e = Op.getNumOperands(); j != e; ++j)