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Don't forget the existing root.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19531 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-01-13 19:53:14 +00:00
parent 39ce11b97b
commit 5a6c6d98d5
1 changed files with 2 additions and 4 deletions
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6
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -878,10 +878,8 @@ void SelectionDAGISel::BuildSelectionDAG(SelectionDAG &DAG, BasicBlock *LLVMBB,
ConstantsOut.clear();
// Turn all of the unordered chains into one factored node.
switch (UnorderedChains.size()) {
case 0: break;
case 1: DAG.setRoot(UnorderedChains[0]); break;
default:
if (!UnorderedChains.empty()) {
UnorderedChains.push_back(DAG.getRoot());
DAG.setRoot(DAG.getNode(ISD::TokenFactor, MVT::Other, UnorderedChains));
}