Revert [DAGCombiner] Avoid creating large tokenfactors in visitTokenFactor

This reverts r360171 (git commit a9d6c32eaf). A repro showing the asan/msan failures is forthcoming.

llvm-svn: 360481

llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp

@@ -1792,9 +1792,8 @@ SDValue DAGCombiner::visitTokenFactor(SDNode *N) {
   TFs.push_back(N);
 
   // Iterate through token factors.  The TFs grows when new token factors are
-  // encountered. Limit number of nodes to inline, to avoid quadratic compile
-  // times.
-  for (unsigned i = 0; i < TFs.size() && Ops.size() <= 2048; ++i) {
+  // encountered.
+  for (unsigned i = 0; i < TFs.size(); ++i) {
     SDNode *TF = TFs[i];
 
     // Check each of the operands.