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Instead of cloning the globals for main into the globals graph at the end of 

BU propagation, clone the globals into the GG of EACH FUNCTION that finishes
processing!  The GlobalsGraph *must* include all globals and effects from
all functions in the program.  Fixing this makes pool allocation work better
on 175.vpr, but it still ultimately crashes.

llvm-svn: 11686
This commit is contained in:
Chris Lattner 2004-02-21 00:30:28 +00:00
parent 6a4e39677e
commit ab66f3d143
1 changed files with 11 additions and 17 deletions
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28
llvm/lib/Analysis/DataStructure/BottomUpClosure.cpp
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@ -57,23 +57,6 @@ bool BUDataStructures::run(Module &M) {
NumCallEdges += ActualCallees.size();
// At the end of the BU phase, clone the BU graph for main into the globals
// graph to make sure it has everything.
if (MainFunc) {
DSGraph &MainGraph = getOrCreateGraph(MainFunc);
DSScalarMap &MainSM = MainGraph.getScalarMap();
ReachabilityCloner RC(*GlobalsGraph, MainGraph, DSGraph::StripAllocaBit);
// Clone everything reachable from globals in the "main" graph into the
// globals graph.
for (DSScalarMap::global_iterator I = MainSM.global_begin(),
E = MainSM.global_end(); I != E; ++I)
RC.getClonedNH(MainSM[*I]);
}
// At the end of the bottom-up pass, the globals graph becomes complete.
// FIXME: This is not the right way to do this, but it is sorta better than
// nothing! In particular, externally visible globals and unresolvable call
@ -329,5 +312,16 @@ void BUDataStructures::calculateGraph(DSGraph &Graph) {
// reach live nodes as live.
Graph.removeDeadNodes(DSGraph::KeepUnreachableGlobals);
// When this graph is finalized, clone the globals in the graph into the
// globals graph to make sure it has everything, from all graphs.
DSScalarMap &MainSM = Graph.getScalarMap();
ReachabilityCloner RC(*GlobalsGraph, Graph, DSGraph::StripAllocaBit);
// Clone everything reachable from globals in the "main" graph into the
// globals graph.
for (DSScalarMap::global_iterator I = MainSM.global_begin(),
E = MainSM.global_end(); I != E; ++I)
RC.getClonedNH(MainSM[*I]);
//Graph.writeGraphToFile(std::cerr, "bu_" + F.getName());
}