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Add a timer, fix a minor bug.

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Also, use RC::merge when possible, reducing the number of nodes allocated, then immediately merged away from 2985444 to 2193852 on perlbmk.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10991 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-01-28 02:05:05 +00:00
parent 64507e39da
commit 00948c05b2
1 changed files with 12 additions and 4 deletions
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16
lib/Analysis/DataStructure/DataStructure.cpp
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@ -779,7 +779,7 @@ DSNodeHandle ReachabilityCloner::getClonedNH(const DSNodeHandle &SrcNH) {
DSNode *DN = new DSNode(*SN, &Dest, true /* Null out all links */);
DN->maskNodeTypes(BitsToKeep);
NH.setNode(DN);
NH = DN;
// Next, recursively clone all outgoing links as necessary. Note that
// adding these links can cause the node to collapse itself at any time, and
@ -814,7 +814,7 @@ DSNodeHandle ReachabilityCloner::getClonedNH(const DSNodeHandle &SrcNH) {
DSNodeHandle &DestGNH = NodeMap[SrcGNH.getNode()];
assert(DestGNH.getNode() == NH.getNode() &&"Global mapping inconsistent");
Dest.getNodeForValue(GV).mergeWith(DSNodeHandle(DestGNH.getNode(),
DestGNH.getOffset()+NH.getOffset()));
DestGNH.getOffset()+SrcGNH.getOffset()));
if (CloneFlags & DSGraph::UpdateInlinedGlobals)
Dest.getInlinedGlobals().insert(GV);
@ -1619,6 +1619,7 @@ void DSGraph::removeDeadNodes(unsigned Flags) {
DSGraph::StripIncompleteBit);
// Mark all nodes reachable by (non-global) scalar nodes as alive...
{ TIME_REGION(Y, "removeDeadNodes:scalarscan");
for (ScalarMapTy::iterator I = ScalarMap.begin(), E = ScalarMap.end(); I !=E;)
if (isa<GlobalValue>(I->first)) { // Keep track of global nodes
assert(I->second.getNode() && "Null global node?");
@ -1626,8 +1627,14 @@ void DSGraph::removeDeadNodes(unsigned Flags) {
GlobalNodes.push_back(std::make_pair(I->first, I->second.getNode()));
// Make sure that all globals are cloned over as roots.
if (!(Flags & DSGraph::RemoveUnreachableGlobals))
GGCloner.getClonedNH(I->second);
if (!(Flags & DSGraph::RemoveUnreachableGlobals)) {
DSGraph::ScalarMapTy::iterator SMI =
GlobalsGraph->getScalarMap().find(I->first);
if (SMI != GlobalsGraph->getScalarMap().end())
GGCloner.merge(SMI->second, I->second);
else
GGCloner.getClonedNH(I->second);
}
++I;
} else {
// Check to see if this is a worthless node generated for non-pointer
@ -1648,6 +1655,7 @@ void DSGraph::removeDeadNodes(unsigned Flags) {
++I;
}
}
}
// The return values are alive as well.
for (ReturnNodesTy::iterator I = ReturnNodes.begin(), E = ReturnNodes.end();