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Fix a bug Sabre was having where the DAG root was a group. The group dominator

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needed to be added to the ordering list, not the first member of the group.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24816 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey 2005-12-18 04:40:52 +00:00
parent 9022ed955a
commit bd2b621486
1 changed files with 6 additions and 1 deletions
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7
lib/CodeGen/SelectionDAG/ScheduleDAG.cpp
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@ -682,7 +682,12 @@ void SimpleSched::IncludeNode(NodeInfo *NI) {
/// Note that the ordering in the Nodes vector is reversed.
void SimpleSched::VisitAll() {
// Add first element to list
Ordering.push_back(getNI(DAG.getRoot().Val));
NodeInfo *NI = getNI(DAG.getRoot().Val);
if (NI->isInGroup()) {
Ordering.push_back(NI->Group->getDominator());
} else {
Ordering.push_back(NI);
}
// Iterate through all nodes that have been added
for (unsigned i = 0; i < Ordering.size(); i++) { // note: size() varies