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When making a clone of a DSGraph from the BU pass, make sure to remember that

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this clone is supposed to be used for *ALL* of the functions in the SCC.

This fixes the memory explosion problem the TD pass was having, reducing the
memory growth from 24MB -> 3.5MB on povray and 270MB ->8.3MB on perlbmk!
This obviously also speeds up the TD pass *a lot*.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20763 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-03-22 01:50:42 +00:00
parent 3bc703ba22
commit 9308a35532
1 changed files with 8 additions and 1 deletions
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9
lib/Analysis/DataStructure/TopDownClosure.cpp
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@ -105,8 +105,8 @@ bool TDDataStructures::runOnModule(Module &M) {
for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
if (!I->isExternal())
getOrCreateDSGraph(*I);
return false;
}
//return false;
#endif
@ -154,6 +154,13 @@ DSGraph &TDDataStructures::getOrCreateDSGraph(Function &F) {
assert(G->getAuxFunctionCalls().empty() && "Cloned aux calls?");
G->setPrintAuxCalls();
G->setGlobalsGraph(GlobalsGraph);
// Note that this graph is the graph for ALL of the function in the SCC, not
// just F.
for (DSGraph::retnodes_iterator RI = G->retnodes_begin(),
E = G->retnodes_end(); RI != E; ++RI)
if (RI->first != &F)
DSInfo[RI->first] = G;
}
return *G;
}