81   uint32_t varId = ptrId;  in IsPtr()  local
82   Instruction* ptrInst = get_def_use_mgr()->GetDef(varId);  in IsPtr()
84     varId = ptrInst->GetSingleWordInOperand(kCopyObjectOperandInIdx);  in IsPtr()
85     ptrInst = get_def_use_mgr()->GetDef(varId);  in IsPtr()
95 Instruction* MemPass::GetPtr(uint32_t ptrId, uint32_t* varId) {  in GetPtr()  argument
96   *varId = ptrId;  in GetPtr()
97   Instruction* ptrInst = get_def_use_mgr()->GetDef(*varId);  in GetPtr()
107     *varId = varInst->result_id();  in GetPtr()
109     *varId = 0;  in GetPtr()
120 Instruction* MemPass::GetPtr(Instruction* ip, uint32_t* varId) {  in GetPtr()  argument
126   return GetPtr(ptrId, varId);  in GetPtr()
143 bool MemPass::HasLoads(uint32_t varId) const {  in HasLoads()
144   return !get_def_use_mgr()->WhileEachUser(varId, [this](Instruction* user) {  in HasLoads()
159 bool MemPass::IsLiveVar(uint32_t varId) const {  in IsLiveVar()
160   const Instruction* varInst = get_def_use_mgr()->GetDef(varId);  in IsLiveVar()
170   return HasLoads(varId);  in IsLiveVar()
198     uint32_t varId = 0;  in DCEInst()  local
200     if (di->opcode() == SpvOpLoad) (void)GetPtr(di, &varId);  in DCEInst()
214     if (varId != 0 && !IsLiveVar(varId)) AddStores(varId, &deadInsts);  in DCEInst()
221 bool MemPass::HasOnlySupportedRefs(uint32_t varId) {  in HasOnlySupportedRefs()  argument
222   return get_def_use_mgr()->WhileEachUser(varId, [this](Instruction* user) {  in HasOnlySupportedRefs()
244 bool MemPass::IsTargetVar(uint32_t varId) {  in IsTargetVar()  argument
245   if (varId == 0) {  in IsTargetVar()
249   if (seen_non_target_vars_.find(varId) != seen_non_target_vars_.end())  in IsTargetVar()
251   if (seen_target_vars_.find(varId) != seen_target_vars_.end()) return true;  in IsTargetVar()
252   const Instruction* varInst = get_def_use_mgr()->GetDef(varId);  in IsTargetVar()
258     seen_non_target_vars_.insert(varId);  in IsTargetVar()
265     seen_non_target_vars_.insert(varId);  in IsTargetVar()
268   seen_target_vars_.insert(varId);  in IsTargetVar()
480           uint32_t varId;  in CollectTargetVars()  local
481           (void)GetPtr(&inst, &varId);  in CollectTargetVars()
482           if (!IsTargetVar(varId)) break;  in CollectTargetVars()
483           if (HasOnlySupportedRefs(varId)) break;  in CollectTargetVars()
484           seen_non_target_vars_.insert(varId);  in CollectTargetVars()
485           seen_target_vars_.erase(varId);  in CollectTargetVars()