Differential D78369 Diff 265778 llvm/lib/Transforms/Scalar/DeadStoreElimination.cpp

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	Instruction *DeadInst = NowDeadInsts.pop_back_val();			Instruction *DeadInst = NowDeadInsts.pop_back_val();
	// Mark the DeadInst as dead in the list of throwable instructions.			// Mark the DeadInst as dead in the list of throwable instructions.
	auto It = ThrowableInst.find(DeadInst);			auto It = ThrowableInst.find(DeadInst);
	if (It != ThrowableInst.end())			if (It != ThrowableInst.end())
	ThrowableInst[It->first] = false;			ThrowableInst[It->first] = false;
	++NumFastOther;			++NumFastOther;

	// Try to preserve debug information attached to the dead instruction.			// Try to preserve debug information attached to the dead instruction.
	salvageDebugInfoOrMarkUndef(*DeadInst);			salvageDebugInfo(*DeadInst);
	salvageKnowledge(DeadInst);			salvageKnowledge(DeadInst);

	// This instruction is dead, zap it, in stages. Start by removing it from			// This instruction is dead, zap it, in stages. Start by removing it from
	// MemDep, which needs to know the operands and needs it to be in the			// MemDep, which needs to know the operands and needs it to be in the
	// function.			// function.
	MD.removeInstruction(DeadInst);			MD.removeInstruction(DeadInst);

	for (unsigned op = 0, e = DeadInst->getNumOperands(); op != e; ++op) {			for (unsigned op = 0, e = DeadInst->getNumOperands(); op != e; ++op) {
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