[llvm-commits] CVS: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp

[Chris Lattner]

Changes in directory llvm/lib/CodeGen/SelectionDAG:

SelectionDAG.cpp updated: 1.295 -> 1.296
---
Log message:

Constant fold bitconvert(undef)


---
Diffs of the changes:  (+2 -0)

 SelectionDAG.cpp |    2 ++
 1 files changed, 2 insertions(+)


Index: llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:1.295 llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:1.296
--- llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:1.295	Sat Apr  1 20:51:27 2006
+++ llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp	Mon Apr  3 20:02:22 2006
@@ -1167,6 +1167,8 @@
     if (VT == Operand.getValueType()) return Operand;  // noop conversion.
     if (OpOpcode == ISD::BIT_CONVERT)  // bitconv(bitconv(x)) -> bitconv(x)
       return getNode(ISD::BIT_CONVERT, VT, Operand.getOperand(0));
+    if (OpOpcode == ISD::UNDEF)
+      return getNode(ISD::UNDEF, VT);
     break;
   case ISD::SCALAR_TO_VECTOR:
     assert(MVT::isVector(VT) && !MVT::isVector(Operand.getValueType()) &&