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Fix a bug that was causing several miscompilations on SPEC.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40746 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
2007-08-02 17:56:05 +00:00
parent a326b5da4b
commit 1c2763d3fe
2 changed files with 21 additions and 7 deletions
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18
lib/Analysis/MemoryDependenceAnalysis.cpp
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@@ -111,19 +111,31 @@ void MemoryDependenceAnalysis::nonLocalHelper(Instruction* query,
while (!stack.empty()) {
BasicBlock* BB = stack.back();
visited.insert(BB);
if (resp.count(BB)) {
if (visited.count(BB)) {
stack.pop_back();
continue;
}
if (BB != block) {
visited.insert(BB);
Instruction* localDep = getDependency(query, 0, BB);
if (localDep != NonLocal) {
resp.insert(std::make_pair(BB, localDep));
stack.pop_back();
continue;
}
} else if (BB == block && stack.size() > 1) {
visited.insert(BB);
Instruction* localDep = getDependency(query, 0, BB);
if (localDep != query)
resp.insert(std::make_pair(BB, localDep));
stack.pop_back();
continue;
}
bool predOnStack = false;