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Simplify this code; use a while instead of an if and a do-while.

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llvm-svn: 67400
This commit is contained in:
Dan Gohman 2009-03-20 20:42:23 +00:00
parent 0c629db2aa
commit 60cfa194d4
1 changed files with 6 additions and 9 deletions
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15
lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
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@ -105,18 +105,15 @@ void ScheduleDAGSDNodes::BuildSchedUnits() {
// See if anything is flagged to this node, if so, add them to flagged
// nodes. Nodes can have at most one flag input and one flag output. Flags
// are required the be the last operand and result of a node.
// are required to be the last operand and result of a node.
// Scan up to find flagged preds.
SDNode *N = NI;
if (N->getNumOperands() &&
N->getOperand(N->getNumOperands()-1).getValueType() == MVT::Flag) {
do {
N = N->getOperand(N->getNumOperands()-1).getNode();
assert(N->getNodeId() == -1 && "Node already inserted!");
N->setNodeId(NodeSUnit->NodeNum);
} while (N->getNumOperands() &&
N->getOperand(N->getNumOperands()-1).getValueType()== MVT::Flag);
while (N->getNumOperands() &&
N->getOperand(N->getNumOperands()-1).getValueType() == MVT::Flag) {
N = N->getOperand(N->getNumOperands()-1).getNode();
assert(N->getNodeId() == -1 && "Node already inserted!");
N->setNodeId(NodeSUnit->NodeNum);
}
// Scan down to find any flagged succs.