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Fix for PR2190. Memdep's non-local caching was checking dirtied blocks in the

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wrong order.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49499 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2008-04-10 22:13:32 +00:00
parent 3bd659ba20
commit f062f10231
1 changed files with 4 additions and 2 deletions
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6
lib/Analysis/MemoryDependenceAnalysis.cpp
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@ -181,7 +181,9 @@ void MemoryDependenceAnalysis::nonLocalHelper(Instruction* query,
// Current stack of the DFS
SmallVector<BasicBlock*, 4> stack;
stack.push_back(block);
for (pred_iterator PI = pred_begin(block), PE = pred_end(block);
PI != PE; ++PI)
stack.push_back(*PI);
// Do a basic DFS
while (!stack.empty()) {
@ -208,7 +210,7 @@ void MemoryDependenceAnalysis::nonLocalHelper(Instruction* query,
// If we re-encounter the starting block, we still need to search it
// because there might be a dependency in the starting block AFTER
// the position of the query. This is necessary to get loops right.
} else if (BB == block && stack.size() > 1) {
} else if (BB == block) {
visited.insert(BB);
Instruction* localDep = getDependency(query, 0, BB);