[llvm-commits] [llvm] r49676 - /llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

[Dan Gohman]

Author: djg
Date: Mon Apr 14 13:43:25 2008
New Revision: 49676

URL: http://llvm.org/viewvc/llvm-project?rev=49676&view=rev
Log:
Avoid creating MERGE_VALUES nodes for single values.

Modified:
    llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp?rev=49676&r1=49675&r2=49676&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Mon Apr 14 13:43:25 2008
@@ -1848,7 +1848,8 @@
   unsigned OpOpcode = Operand.Val->getOpcode();
   switch (Opcode) {
   case ISD::TokenFactor:
-    return Operand;         // Factor of one node?  No factor.
+  case ISD::MERGE_VALUES:
+    return Operand;         // Factor or merge of one node?  No need.
   case ISD::FP_ROUND: assert(0 && "Invalid method to make FP_ROUND node");
   case ISD::FP_EXTEND:
     assert(MVT::isFloatingPoint(VT) &&