[llvm-commits] [llvm] r56921 - /llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

[Dan Gohman]

Author: djg
Date: Wed Oct  1 10:11:19 2008
New Revision: 56921

URL: http://llvm.org/viewvc/llvm-project?rev=56921&view=rev
Log:
Fold trivial two-operand tokenfactors where the operands are equal
immediately.

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=56921&r1=56920&r2=56921&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Wed Oct  1 10:11:19 2008
@@ -2320,6 +2320,7 @@
     // Fold trivial token factors.
     if (N1.getOpcode() == ISD::EntryToken) return N2;
     if (N2.getOpcode() == ISD::EntryToken) return N1;
+    if (N1 == N2) return N1;
     break;
   case ISD::CONCAT_VECTORS:
     // A CONCAT_VECTOR with all operands BUILD_VECTOR can be simplified to