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

llvm-svn: 67400
This commit is contained in:
Dan Gohman 2009-03-20 20:42:23 +00:00
parent 2460c0c37c
commit 3bdc4bdba6
1 changed files with 6 additions and 9 deletions
llvm/lib/CodeGen/SelectionDAG
ScheduleDAGSDNodes.cpp

15
llvm/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
View File

@ -105,18 +105,15 @@ void ScheduleDAGSDNodes::BuildSchedUnits() {
// See if anything is flagged to this node, if so, add them to flagged // 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 // 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. // Scan up to find flagged preds.
SDNode *N = NI; SDNode *N = NI;
if (N->getNumOperands() && while (N->getNumOperands() &&
N->getOperand(N->getNumOperands()-1).getValueType() == MVT::Flag) { N->getOperand(N->getNumOperands()-1).getValueType() == MVT::Flag) {
do { N = N->getOperand(N->getNumOperands()-1).getNode();
N = N->getOperand(N->getNumOperands()-1).getNode(); assert(N->getNodeId() == -1 && "Node already inserted!");
assert(N->getNodeId() == -1 && "Node already inserted!"); N->setNodeId(NodeSUnit->NodeNum);
N->setNodeId(NodeSUnit->NodeNum);
} while (N->getNumOperands() &&
N->getOperand(N->getNumOperands()-1).getValueType()== MVT::Flag);
} }
// Scan down to find any flagged succs. // Scan down to find any flagged succs.