Method getDebugStackVariable

src/bin2llvmir/optimizations/stack/stack.cpp:293–327

* Find a value that is being added to the stack pointer register in \p root. * Find a debug variable with offset equal to this value. */

 * Find a debug variable with offset equal to this value.
 */
const retdec::common::Object* StackAnalysis::getDebugStackVariable(
		llvm::Function* fnc,
		SymbolicTree& root)
{
	auto baseOffset = getBaseOffset(root);
	if (!baseOffset.has_value())
	{
		return nullptr;
	}

	if (_dbgf == nullptr)
	{
		return nullptr;
	}

	auto* debugFnc = _dbgf->getFunction(_config->getFunctionAddress(fnc));
	if (debugFnc == nullptr)
	{
		return nullptr;
	}

	for (auto& var : debugFnc->locals)
	{
		if (!var.getStorage().isStack())
		{
			continue;
		}
		if (var.getStorage().getStackOffset() == baseOffset)
		{
			return &var;
		}
	}

	return nullptr;
}

const retdec::common::Object* StackAnalysis::getConfigStackVariable(
		llvm::Function* fnc,