Author: lattner
Date: Mon Nov 19 14:21:32 2007
New Revision: 44239
URL: http://llvm.org/viewvc/llvm-project?rev=44239&view=rev
Log:
Implement splitting of UNDEF nodes. This is the first step towards fixing PR1811
Modified:
llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
URL:
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp?rev=44239&r1=44238&r2=44239&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp Mon Nov 19 14:21:32 2007
@@ -6265,6 +6265,10 @@
Node->dump(&DAG);
#endif
assert(0 && "Unhandled operation in SplitVectorOp!");
+ case ISD::UNDEF:
+ Lo = DAG.getNode(ISD::UNDEF, NewVT_Lo);
+ Hi = DAG.getNode(ISD::UNDEF, NewVT_Hi);
+ break;
case ISD::BUILD_PAIR:
Lo = Node->getOperand(0);
Hi = Node->getOperand(1);
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