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reapply r90093 with an addition of keeping the forward
and reverse nonlocal memdep maps in synch, this should fix 255.vortex. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90107 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1156,8 +1156,21 @@ getNonLocalPointerDepFromBB(Value *Pointer, uint64_t PointeeSize,
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// that predecessor. We can still do PRE of the load, which would insert
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// a computation of the pointer in this predecessor.
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if (PredPtr == 0) {
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Result.push_back(NonLocalDepEntry(Pred,
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MemDepResult::getClobber(Pred->getTerminator())));
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// Add the entry to the Result list.
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NonLocalDepEntry Entry(Pred,
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MemDepResult::getClobber(Pred->getTerminator()));
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Result.push_back(Entry);
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// Add it to the cache for this CacheKey so that subsequent queries get
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// this result.
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Cache = &NonLocalPointerDeps[CacheKey].second;
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MemoryDependenceAnalysis::NonLocalDepInfo::iterator It =
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std::upper_bound(Cache->begin(), Cache->end(), Entry);
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Cache->insert(It, Entry);
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Cache = 0;
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// Add it to the reverse map next.
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ReverseNonLocalPtrDeps[Pred->getTerminator()].insert(CacheKey);
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continue;
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}
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