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Fix for PR2190. Memdep's non-local caching was checking dirtied blocks in the
wrong order. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49499 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -181,7 +181,9 @@ void MemoryDependenceAnalysis::nonLocalHelper(Instruction* query,
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// Current stack of the DFS
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SmallVector<BasicBlock*, 4> stack;
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stack.push_back(block);
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for (pred_iterator PI = pred_begin(block), PE = pred_end(block);
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PI != PE; ++PI)
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stack.push_back(*PI);
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// Do a basic DFS
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while (!stack.empty()) {
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@ -208,7 +210,7 @@ void MemoryDependenceAnalysis::nonLocalHelper(Instruction* query,
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// If we re-encounter the starting block, we still need to search it
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// because there might be a dependency in the starting block AFTER
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// the position of the query. This is necessary to get loops right.
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} else if (BB == block && stack.size() > 1) {
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} else if (BB == block) {
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visited.insert(BB);
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Instruction* localDep = getDependency(query, 0, BB);
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