82   uint32_t varId = ptrId;  in IsPtr()  local
83   Instruction* ptrInst = get_def_use_mgr()->GetDef(varId);  in IsPtr()
85     varId = ptrInst->GetSingleWordInOperand(kCopyObjectOperandInIdx);  in IsPtr()
86     ptrInst = get_def_use_mgr()->GetDef(varId);  in IsPtr()
96 Instruction* MemPass::GetPtr(uint32_t ptrId, uint32_t* varId) {  in GetPtr()  argument
97   *varId = ptrId;  in GetPtr()
98   Instruction* ptrInst = get_def_use_mgr()->GetDef(*varId);  in GetPtr()
102     *varId = 0;  in GetPtr()
113     *varId = varInst->result_id();  in GetPtr()
115     *varId = 0;  in GetPtr()
126 Instruction* MemPass::GetPtr(Instruction* ip, uint32_t* varId) {  in GetPtr()  argument
132   return GetPtr(ptrId, varId);  in GetPtr()
149 bool MemPass::HasLoads(uint32_t varId) const {  in HasLoads()
150   return !get_def_use_mgr()->WhileEachUser(varId, [this](Instruction* user) {  in HasLoads()
165 bool MemPass::IsLiveVar(uint32_t varId) const {  in IsLiveVar()
166   const Instruction* varInst = get_def_use_mgr()->GetDef(varId);  in IsLiveVar()
176   return HasLoads(varId);  in IsLiveVar()
204     uint32_t varId = 0;  in DCEInst()  local
206     if (di->opcode() == SpvOpLoad) (void)GetPtr(di, &varId);  in DCEInst()
220     if (varId != 0 && !IsLiveVar(varId)) AddStores(varId, &deadInsts);  in DCEInst()
227 bool MemPass::HasOnlySupportedRefs(uint32_t varId) {  in HasOnlySupportedRefs()  argument
228   return get_def_use_mgr()->WhileEachUser(varId, [this](Instruction* user) {  in HasOnlySupportedRefs()
259 bool MemPass::IsTargetVar(uint32_t varId) {  in IsTargetVar()  argument
260   if (varId == 0) {  in IsTargetVar()
264   if (seen_non_target_vars_.find(varId) != seen_non_target_vars_.end())  in IsTargetVar()
266   if (seen_target_vars_.find(varId) != seen_target_vars_.end()) return true;  in IsTargetVar()
267   const Instruction* varInst = get_def_use_mgr()->GetDef(varId);  in IsTargetVar()
273     seen_non_target_vars_.insert(varId);  in IsTargetVar()
280     seen_non_target_vars_.insert(varId);  in IsTargetVar()
283   seen_target_vars_.insert(varId);  in IsTargetVar()
495           uint32_t varId;  in CollectTargetVars()  local
496           (void)GetPtr(&inst, &varId);  in CollectTargetVars()
497           if (!IsTargetVar(varId)) break;  in CollectTargetVars()
498           if (HasOnlySupportedRefs(varId)) break;  in CollectTargetVars()
499           seen_non_target_vars_.insert(varId);  in CollectTargetVars()
500           seen_target_vars_.erase(varId);  in CollectTargetVars()