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Fix a bug, don't drop indirect call sites, especially if there is nothing known about them yet, and restore a simple version of a removed function

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28857 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Lenharth 2006-06-19 15:42:47 +00:00
parent ca0dc56742
commit 3770500f88
1 changed files with 27 additions and 1 deletions
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28
lib/Analysis/DataStructure/DataStructure.cpp
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@ -938,7 +938,10 @@ void DSNode::mergeWith(const DSNodeHandle &NH, unsigned Offset) {
// two node handles, since "this" may get merged away at intermediate steps.
DSNodeHandle CurNodeH(this, Offset);
DSNodeHandle NHCopy(NH);
DSNode::MergeNodes(CurNodeH, NHCopy);
if (CurNodeH.getOffset() >= NHCopy.getOffset())
DSNode::MergeNodes(CurNodeH, NHCopy);
else
DSNode::MergeNodes(NHCopy, CurNodeH);
}
@ -1594,6 +1597,13 @@ void DSGraph::mergeInGraph(const DSCallSite &CS,
for (afc_iterator I = Graph.afc_begin(), E = Graph.afc_end(); I!=E; ++I)
if (SCCFinder.PathExistsToClonedNode(*I))
AuxCallToCopy.push_back(&*I);
else if (I->isIndirectCall()){
//If the call node doesn't have any callees, clone it
std::vector< Function *> List;
I->getCalleeNode()->addFullFunctionList(List);
if (!List.size())
AuxCallToCopy.push_back(&*I);
}
const DSScalarMap &GSM = Graph.getScalarMap();
for (DSScalarMap::global_iterator GI = GSM.global_begin(),
@ -2397,3 +2407,19 @@ void DSGraph::computeCalleeCallerMapping(DSCallSite CS, const Function &Callee,
computeNodeMapping(CalleeSM[*GI], CallerSM[*GI], NodeMap);
}
}
/// updateFromGlobalGraph - This function rematerializes global nodes and
/// nodes reachable from them from the globals graph into the current graph.
///
void DSGraph::updateFromGlobalGraph() {
TIME_REGION(X, "updateFromGlobalGraph");
ReachabilityCloner RC(*this, *GlobalsGraph, 0);
// Clone the non-up-to-date global nodes into this graph.
for (DSScalarMap::global_iterator I = getScalarMap().global_begin(),
E = getScalarMap().global_end(); I != E; ++I) {
DSScalarMap::iterator It = GlobalsGraph->ScalarMap.find(*I);
if (It != GlobalsGraph->ScalarMap.end())
RC.merge(getNodeForValue(*I), It->second);
}
}