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Disable some code that isn't helping matters

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14682 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-07-08 07:25:51 +00:00
parent f9a75460ee
commit 5ace1e4f6f
1 changed files with 6 additions and 1 deletions
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7
lib/Analysis/DataStructure/DataStructure.cpp
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@ -1589,20 +1589,25 @@ static void removeIdenticalCalls(std::vector<DSCallSite> &Calls) {
void DSGraph::removeTriviallyDeadNodes() {
TIME_REGION(X, "removeTriviallyDeadNodes");
#if 0
/// NOTE: This code is disabled. This slows down DSA on 177.mesa
/// substantially!
// Loop over all of the nodes in the graph, calling getNode on each field.
// This will cause all nodes to update their forwarding edges, causing
// forwarded nodes to be delete-able.
{ TIME_REGION(X, "removeTriviallyDeadNodes:node_iterate");
for (node_iterator NI = node_begin(), E = node_end(); NI != E; ++NI) {
DSNode *N = *NI;
for (unsigned l = 0, e = N->getNumLinks(); l != e; ++l)
N->getLink(l*N->getPointerSize()).getNode();
}
}
// NOTE: This code is disabled. Though it should, in theory, allow us to
// remove more nodes down below, the scan of the scalar map is incredibly
// expensive for certain programs (with large SCCs). In the future, if we can
// make the scalar map scan more efficient, then we can reenable this.
#if 0
{ TIME_REGION(X, "removeTriviallyDeadNodes:scalarmap");
// Likewise, forward any edges from the scalar nodes. While we are at it,