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

[Chris Lattner]

Changes in directory llvm/lib/CodeGen/SelectionDAG:

LegalizeDAG.cpp updated: 1.109 -> 1.110
---
Log message:

Make sure to expand all nodes, avoiding unintentional node duplication.


---
Diffs of the changes:  (+7 -0)

 LegalizeDAG.cpp |    7 +++++++
 1 files changed, 7 insertions(+)


Index: llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
diff -u llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.109 llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.110
--- llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp:1.109	Thu May 12 01:04:14 2005
+++ llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp	Thu May 12 01:54:21 2005
@@ -2168,6 +2168,13 @@
 
   TargetLowering::ArgListTy Args;
   const Type *ArgTy = MVT::getTypeForValueType(Source.getValueType());
+
+  // Expand the source, then glue it back together for the call.  We must expand
+  // the source in case it is shared (this pass of legalize must traverse it).
+  SDOperand SrcLo, SrcHi;
+  ExpandOp(Source, SrcLo, SrcHi);
+  Source = DAG.getNode(ISD::BUILD_PAIR, Source.getValueType(), SrcLo, SrcHi);
+
   Args.push_back(std::make_pair(Source, ArgTy));
 
   // We don't care about token chains for libcalls.  We just use the entry