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LVI: Fix use-of-uninitialized-value after r294463

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BlockValueStack can be reallocated making reference e invalid.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294572 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vitaly Buka 2017-02-09 09:28:05 +00:00
parent e75e780ee4
commit 82afb7ea06
1 changed files with 1 additions and 1 deletions
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2
lib/Analysis/LazyValueInfo.cpp
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@ -677,7 +677,7 @@ void LazyValueInfoImpl::solve() {
BlockValueStack.clear();
return;
}
std::pair<BasicBlock *, Value *> &e = BlockValueStack.back();
std::pair<BasicBlock *, Value *> e = BlockValueStack.back();
assert(BlockValueSet.count(e) && "Stack value should be in BlockValueSet!");
if (solveBlockValue(e.second, e.first)) {