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Clean up DSGraph::removeDeadNodes interface

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@4660 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-11-09 21:00:49 +00:00
parent 96517253a1
commit 65f2897f2c
7 changed files with 20 additions and 32 deletions
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33
lib/Analysis/DataStructure/DataStructure.cpp
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@ -981,10 +981,7 @@ static void markGlobalsAlive(DSGraph &G, std::set<DSNode*> &Alive,
// from the caller's graph entirely. This is only appropriate to use when
// inlining graphs.
//
void DSGraph::removeDeadNodes(bool KeepAllGlobals, bool KeepCalls) {
assert((!KeepAllGlobals || KeepCalls) && // FIXME: This should be an enum!
"KeepAllGlobals without KeepCalls is meaningless");
void DSGraph::removeDeadNodes(bool KeepAllGlobals) {
// Reduce the amount of work we have to do...
removeTriviallyDeadNodes(KeepAllGlobals);
@ -994,19 +991,17 @@ void DSGraph::removeDeadNodes(bool KeepAllGlobals, bool KeepCalls) {
std::set<DSNode*> Alive;
// If KeepCalls, mark all nodes reachable by call nodes as alive...
if (KeepCalls) {
for (unsigned i = 0, e = FunctionCalls.size(); i != e; ++i) {
for (unsigned j = 0, e = FunctionCalls[i].getNumPtrArgs(); j != e; ++j)
markAlive(FunctionCalls[i].getPtrArg(j).getNode(), Alive);
markAlive(FunctionCalls[i].getRetVal().getNode(), Alive);
markAlive(FunctionCalls[i].getCallee().getNode(), Alive);
}
for (unsigned i = 0, e = AuxFunctionCalls.size(); i != e; ++i) {
for (unsigned j = 0, e = AuxFunctionCalls[i].getNumPtrArgs(); j != e; ++j)
markAlive(AuxFunctionCalls[i].getPtrArg(j).getNode(), Alive);
markAlive(AuxFunctionCalls[i].getRetVal().getNode(), Alive);
markAlive(AuxFunctionCalls[i].getCallee().getNode(), Alive);
}
for (unsigned i = 0, e = FunctionCalls.size(); i != e; ++i) {
for (unsigned j = 0, e = FunctionCalls[i].getNumPtrArgs(); j != e; ++j)
markAlive(FunctionCalls[i].getPtrArg(j).getNode(), Alive);
markAlive(FunctionCalls[i].getRetVal().getNode(), Alive);
markAlive(FunctionCalls[i].getCallee().getNode(), Alive);
}
for (unsigned i = 0, e = AuxFunctionCalls.size(); i != e; ++i) {
for (unsigned j = 0, e = AuxFunctionCalls[i].getNumPtrArgs(); j != e; ++j)
markAlive(AuxFunctionCalls[i].getPtrArg(j).getNode(), Alive);
markAlive(AuxFunctionCalls[i].getRetVal().getNode(), Alive);
markAlive(AuxFunctionCalls[i].getCallee().getNode(), Alive);
}
// Mark all nodes reachable by scalar nodes as alive...
@ -1022,7 +1017,7 @@ void DSGraph::removeDeadNodes(bool KeepAllGlobals, bool KeepCalls) {
// Of course, if KeepAllGlobals is specified, they would be live already.
if (!KeepAllGlobals)
markGlobalsAlive(*this, Alive, !KeepCalls);
markGlobalsAlive(*this, Alive, false);
// Loop over all unreachable nodes, dropping their references...
vector<DSNode*> DeadNodes;
@ -1157,7 +1152,7 @@ void GlobalDSGraph::cloneGlobals(DSGraph& Graph, bool CloneCalls) {
if (CloneCalls)
GlobalsGraph->cloneCalls(Graph);
GlobalsGraph->removeDeadNodes(/*KeepAllGlobals*/ true, /*KeepCalls*/ true);
GlobalsGraph->removeDeadNodes(/*KeepAllGlobals*/ true);
#endif
}