Make flag and chain edges visually distinguishable from value edges in DOT
output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31067 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
index f68c227..2c392d9 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGPrinter.cpp
@@ -41,6 +41,20 @@
const SelectionDAG *Graph) {
return true;
}
+
+ /// If you want to override the dot attributes printed for a particular
+ /// edge, override this method.
+ template<typename EdgeIter>
+ static std::string getEdgeAttributes(const void *Node, EdgeIter EI) {
+ SDOperand Op = EI.getNode()->getOperand(EI.getOperand());
+ MVT::ValueType VT = Op.getValueType();
+ if (VT == MVT::Flag)
+ return "color=red,style=bold";
+ else if (VT == MVT::Other)
+ return "style=dashed";
+ return "";
+ }
+
static std::string getNodeLabel(const SDNode *Node,
const SelectionDAG *Graph);
@@ -114,7 +128,8 @@
Op += LBB->getName();
//Op += " " + (const void*)BBDN->getBasicBlock();
} else if (const RegisterSDNode *R = dyn_cast<RegisterSDNode>(Node)) {
- if (G && R->getReg() != 0 && MRegisterInfo::isPhysicalRegister(R->getReg())) {
+ if (G && R->getReg() != 0 &&
+ MRegisterInfo::isPhysicalRegister(R->getReg())) {
Op = Op + " " + G->getTarget().getRegisterInfo()->getName(R->getReg());
} else {
Op += " #" + utostr(R->getReg());