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Initial support for carrying MachineInstrs in SUnits.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59278 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2008-11-14 00:06:09 +00:00
parent c3c129fd8b
commit f449bf36ef
3 changed files with 66 additions and 8 deletions
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lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
+17 -4
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@@ -420,11 +420,24 @@ namespace llvm {
static void addCustomGraphFeatures(ScheduleDAG *G,
GraphWriter<ScheduleDAG*> &GW) {
// Draw a special "GraphRoot" node to indicate the root of the graph.
GW.emitSimpleNode(0, "plaintext=circle", "GraphRoot");
const SDNode *N = G->DAG->getRoot().getNode();
if (N && N->getNodeId() != -1)
GW.emitEdge(0, -1, &G->SUnits[N->getNodeId()], -1,
"color=blue,style=dashed");
if (G->DAG) {
// For an SDNode-based ScheduleDAG, point to the root of the ScheduleDAG.
const SDNode *N = G->DAG->getRoot().getNode();
if (N && N->getNodeId() != -1)
GW.emitEdge(0, -1, &G->SUnits[N->getNodeId()], -1,
"color=blue,style=dashed");
} else {
// For a MachineInstr-based ScheduleDAG, find a root to point to.
for (unsigned i = 0, e = G->SUnits.size(); i != e; ++i) {
if (G->SUnits[i].Succs.empty()) {
GW.emitEdge(0, -1, &G->SUnits[i], -1,
"color=blue,style=dashed");
break;
}
}
}
}
};
}