Method popScopes

GPCS4/Graphics/Gcn/ControlFlowGraph/GcnStackifier.cpp:333–383

	}

	void GcnTokenListBuilder::popScopes(GcnCfgVertex vtx)
	{
		// Check if we need to close some scopes
		while (!m_scopeStack.empty())
		{
			auto& scope = m_scopeStack.back();
			switch (scope.m_kind)
			{
				case Scope::If:
				case Scope::Direct:
				{
					if (scope.m_nested && m_domTree.dominates(scope.m_vertex, vtx))
					{
						return;
					}
					
					// If the scope is not nested, add the branch token
					if (!scope.m_nested)
					{
						auto      iter   = m_loopHeaders.find(scope.m_vertex);
						GcnToken* branch = iter == m_loopHeaders.end()
											   ? m_factory.createBranch(nullptr)
											   : m_factory.createBranch(iter->second);

						m_blockScopes[scope.m_vertex].push_back(branch);
						m_insertPtr = m_tokens->insertAfter(m_insertPtr, branch);
					}
				}
					break;
				case Scope::Loop:
				{
					const auto loop = m_loopInfo.getLoop(scope.m_vertex);
					auto       iter = m_loopCounts.find(loop);
					LOG_ASSERT(iter != m_loopCounts.end(), "can't find loop.");
					uint32_t countLeft = iter->second;
					if (countLeft > 0)
					{
						return;
					}
				}
					break;
			}

			if (scope.m_endPtr != m_tokens->end())
			{
				m_insertPtr = scope.m_endPtr;
			}
		
			m_scopeStack.pop_back();
		}
	}

	GcnToken* GcnTokenListBuilder::makeCode(GcnCfgVertex vtx)
	{