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Add support for bottom-up graphs.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19446 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-01-11 00:24:59 +00:00
parent fc08d9c789
commit 89a1ed5839
2 changed files with 20 additions and 3 deletions
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7
include/llvm/Support/DOTGraphTraits.h
View File

@ -39,6 +39,13 @@ struct DefaultDOTGraphTraits {
return "";
}
/// renderGraphFromBottomUp - If this function returns true, the graph is
/// emitted bottom-up instead of top-down. This requires graphviz 2.0 to work
/// though.
static bool renderGraphFromBottomUp() {
return false;
}
/// getNodeLabel - Given a node and a pointer to the top level graph, return
/// the label to print in the node.
static std::string getNodeLabel(const void *Node, const void *Graph) {

16
include/llvm/Support/GraphWriter.h
View File

@ -78,6 +78,9 @@ public:
else
O << "digraph " << Name << " {\n";
if (DOTTraits::renderGraphFromBottomUp())
O << "\trankdir=\"BT\";\n";
std::string GraphName = DOTTraits::getGraphName(G);
if (!GraphName.empty())
O << "\tlabel=\"" << DOT::EscapeString(GraphName) << "\";\n";
@ -106,14 +109,17 @@ public:
O << "\tNode" << reinterpret_cast<const void*>(Node) << " [shape=record,";
if (!NodeAttributes.empty()) O << NodeAttributes << ",";
O << "label=\"{"
<< DOT::EscapeString(DOTTraits::getNodeLabel(Node, G));
O << "label=\"{";
if (!DOTTraits::renderGraphFromBottomUp())
O << DOT::EscapeString(DOTTraits::getNodeLabel(Node, G));
// Print out the fields of the current node...
child_iterator EI = GTraits::child_begin(Node);
child_iterator EE = GTraits::child_end(Node);
if (EI != EE) {
O << "|{";
if (!DOTTraits::renderGraphFromBottomUp()) O << "|";
O << "{";
for (unsigned i = 0; EI != EE && i != 64; ++EI, ++i) {
if (i) O << "|";
@ -123,7 +129,11 @@ public:
if (EI != EE)
O << "|<g64>truncated...";
O << "}";
if (DOTTraits::renderGraphFromBottomUp()) O << "|";
}
if (DOTTraits::renderGraphFromBottomUp())
O << DOT::EscapeString(DOTTraits::getNodeLabel(Node, G));
O << "}\"];\n"; // Finish printing the "node" line
// Output all of the edges now