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Change ScheduleDAG's SUnitMap from DenseMap<SDNode*, vector<SUnit*> >

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to DenseMap<SDNode*, SUnit*>, and adjust the way cloned SUnit nodes are
handled so that only the original node needs to be in the map.
This speeds up llc on 447.dealII.llvm.bc by about 2%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52576 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-06-21 15:52:51 +00:00
parent 4ce138cc55
commit 4c8c83022b
5 changed files with 54 additions and 42 deletions
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lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
+1 -1
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@@ -303,7 +303,7 @@ namespace llvm {
GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
if (G->DAG.getRoot().Val &&
G->SUnitMap.find(G->DAG.getRoot().Val) != G->SUnitMap.end())
GW.emitEdge(0, -1, G->SUnitMap[G->DAG.getRoot().Val].front(), -1, "");
GW.emitEdge(0, -1, G->SUnitMap[G->DAG.getRoot().Val], -1, "");
}
};
}