Method emitControlFlowEndIf

GPCS4/Graphics/Gcn/GcnCompilerFlowControl.cpp:398–443

	}

	void GcnCompiler::emitControlFlowEndIf(const GcnToken& token)
	{
		if (m_controlFlowStack.size() == 0 ||
			m_controlFlowStack.back().type != GcnCfgBlockType::If)
		{
			Logger::exception("GcnCompiler: 'EndIf' without 'If' found");
		}

		// Remove the block from the stack, it's closed
		GcnCfgBlock block = m_controlFlowStack.back();
		m_controlFlowStack.pop_back();

		uint32_t labelMerge = m_blockTerminators.empty()
								  ? block.b_if.labelEnd
								  : m_blockTerminators.back();

		// Write out the 'if' header
		m_module.beginInsertion(block.b_if.headerPtr);

		m_module.opSelectionMerge(
			labelMerge,
			spv::SelectionControlMaskNone);

		m_module.opBranchConditional(
			block.b_if.conditionId,
			block.b_if.labelIf,
			block.b_if.labelElse != 0
				? block.b_if.labelElse
				: labelMerge);

		m_module.endInsertion();

		if (m_blockTerminators.empty())
		{
			// End the active 'if' or 'else' block
			m_module.opBranch(labelMerge);
			m_module.opLabel(labelMerge);
		}
		else
		{
			// if the block is already closed by other terminator instruction,
			// then don't emit branch
			// remove the terminator
			m_blockTerminators.pop_back();
		}
	}

	void GcnCompiler::emitControlFlowLoop(const GcnToken& token)
	{