24 bool isIdempotentRMW(AtomicRMWInst& RMWI) {  in isIdempotentRMW()
27     case AtomicRMWInst::FAdd: // -0.0  in isIdempotentRMW()
29     case AtomicRMWInst::FSub: // +0.0  in isIdempotentRMW()
40     case AtomicRMWInst::Add:  in isIdempotentRMW()
41     case AtomicRMWInst::Sub:  in isIdempotentRMW()
42     case AtomicRMWInst::Or:  in isIdempotentRMW()
43     case AtomicRMWInst::Xor:  in isIdempotentRMW()
45     case AtomicRMWInst::And:  in isIdempotentRMW()
47     case AtomicRMWInst::Min:  in isIdempotentRMW()
49     case AtomicRMWInst::Max:  in isIdempotentRMW()
51     case AtomicRMWInst::UMin:  in isIdempotentRMW()
53     case AtomicRMWInst::UMax:  in isIdempotentRMW()
62 bool isSaturating(AtomicRMWInst& RMWI) {  in isSaturating()
65     case AtomicRMWInst::FMax:  in isSaturating()
68     case AtomicRMWInst::FMin:  in isSaturating()
71     case AtomicRMWInst::FAdd:  in isSaturating()
72     case AtomicRMWInst::FSub:  in isSaturating()
85   case AtomicRMWInst::Xchg:  in isSaturating()
87   case AtomicRMWInst::Or:  in isSaturating()
89   case AtomicRMWInst::And:  in isSaturating()
91   case AtomicRMWInst::Min:  in isSaturating()
93   case AtomicRMWInst::Max:  in isSaturating()
95   case AtomicRMWInst::UMin:  in isSaturating()
97   case AtomicRMWInst::UMax:  in isSaturating()
103 Instruction *InstCombinerImpl::visitAtomicRMWInst(AtomicRMWInst &RMWI) {  in visitAtomicRMWInst()
114       RMWI.getOperation() != AtomicRMWInst::Xchg) {  in visitAtomicRMWInst()
115     RMWI.setOperation(AtomicRMWInst::Xchg);  in visitAtomicRMWInst()
131       RMWI.getOperation() != AtomicRMWInst::Or) {  in visitAtomicRMWInst()
132     RMWI.setOperation(AtomicRMWInst::Or);  in visitAtomicRMWInst()
135              RMWI.getOperation() != AtomicRMWInst::FAdd) {  in visitAtomicRMWInst()
136     RMWI.setOperation(AtomicRMWInst::FAdd);  in visitAtomicRMWInst()