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Fix a use-after-free.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109468 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -41,8 +41,6 @@ CriticalAntiDepBreaker::~CriticalAntiDepBreaker() {
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}
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void CriticalAntiDepBreaker::StartBlock(MachineBasicBlock *BB) {
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Classes.clear();
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const unsigned BBSize = BB->size();
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for (unsigned i = 0, e = TRI->getNumRegs(); i != e; ++i) {
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// Clear out the register class data.
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