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[LCG] Add the really, *really* boring edge insertion case: adding an

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edge entirely within an existing SCC. Shockingly, making the connected
component more connected is ... a total snooze fest. =]

Anyways, its wired up, and I even added a test case to make sure it
pretty much sorta works. =D

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207631 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2014-04-30 10:48:36 +00:00
parent 0a78097774
commit 491f476b8b
3 changed files with 74 additions and 4 deletions
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23
lib/Analysis/LazyCallGraph.cpp
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@ -76,11 +76,16 @@ LazyCallGraph::Node::Node(LazyCallGraph &G, Function &F)
}
void LazyCallGraph::Node::insertEdgeInternal(Function &Callee) {
CalleeIndexMap.insert(std::make_pair(&Callee, Callees.size()));
if (Node *N = G->lookup(Callee))
Callees.push_back(N);
else
Callees.push_back(&Callee);
return insertEdgeInternal(*N);
CalleeIndexMap.insert(std::make_pair(&Callee, Callees.size()));
Callees.push_back(&Callee);
}
void LazyCallGraph::Node::insertEdgeInternal(Node &CalleeN) {
CalleeIndexMap.insert(std::make_pair(&CalleeN.getFunction(), Callees.size()));
Callees.push_back(&CalleeN);
}
void LazyCallGraph::Node::removeEdgeInternal(Function &Callee) {
@ -157,6 +162,16 @@ void LazyCallGraph::SCC::insert(Node &N) {
G->SCCMap[&N] = this;
}
void LazyCallGraph::SCC::insertIntraSCCEdge(Node &CallerN, Node &CalleeN) {
// First insert it into the caller.
CallerN.insertEdgeInternal(CalleeN);
assert(G->SCCMap.lookup(&CallerN) == this && "Caller must be in this SCC.");
assert(G->SCCMap.lookup(&CalleeN) == this && "Callee must be in this SCC.");
// Nothing changes about this SCC or any other.
}
void LazyCallGraph::SCC::removeInterSCCEdge(Node &CallerN, Node &CalleeN) {
// First remove it from the node.
CallerN.removeEdgeInternal(CalleeN.getFunction());