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

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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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11686 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-02-21 00:30:28 +00:00
parent d10b5fd395
commit 3567937f16
1 changed files with 11 additions and 17 deletions
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28
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());
}