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Add support for bottom-up graphs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19446 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -39,6 +39,13 @@ struct DefaultDOTGraphTraits {
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return "";
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}
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/// renderGraphFromBottomUp - If this function returns true, the graph is
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/// emitted bottom-up instead of top-down. This requires graphviz 2.0 to work
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/// though.
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static bool renderGraphFromBottomUp() {
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return false;
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}
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/// getNodeLabel - Given a node and a pointer to the top level graph, return
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/// the label to print in the node.
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static std::string getNodeLabel(const void *Node, const void *Graph) {
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@ -78,6 +78,9 @@ public:
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else
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O << "digraph " << Name << " {\n";
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if (DOTTraits::renderGraphFromBottomUp())
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O << "\trankdir=\"BT\";\n";
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std::string GraphName = DOTTraits::getGraphName(G);
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if (!GraphName.empty())
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O << "\tlabel=\"" << DOT::EscapeString(GraphName) << "\";\n";
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@ -106,14 +109,17 @@ public:
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O << "\tNode" << reinterpret_cast<const void*>(Node) << " [shape=record,";
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if (!NodeAttributes.empty()) O << NodeAttributes << ",";
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O << "label=\"{"
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<< DOT::EscapeString(DOTTraits::getNodeLabel(Node, G));
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O << "label=\"{";
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if (!DOTTraits::renderGraphFromBottomUp())
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O << DOT::EscapeString(DOTTraits::getNodeLabel(Node, G));
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// Print out the fields of the current node...
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child_iterator EI = GTraits::child_begin(Node);
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child_iterator EE = GTraits::child_end(Node);
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if (EI != EE) {
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O << "|{";
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if (!DOTTraits::renderGraphFromBottomUp()) O << "|";
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O << "{";
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for (unsigned i = 0; EI != EE && i != 64; ++EI, ++i) {
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if (i) O << "|";
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@ -123,7 +129,11 @@ public:
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if (EI != EE)
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O << "|<g64>truncated...";
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O << "}";
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if (DOTTraits::renderGraphFromBottomUp()) O << "|";
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}
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if (DOTTraits::renderGraphFromBottomUp())
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O << DOT::EscapeString(DOTTraits::getNodeLabel(Node, G));
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O << "}\"];\n"; // Finish printing the "node" line
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// Output all of the edges now
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