lib/IR/ConstantFold.cpp

1244   if (ConstantInt *CI1 = dyn_cast<ConstantInt>(C1)) {
1246       const APInt &C1V = CI1->getValue();
1252         return ConstantInt::get(CI1->getContext(), C1V + C2V);
1254         return ConstantInt::get(CI1->getContext(), C1V - C2V);
1256         return ConstantInt::get(CI1->getContext(), C1V * C2V);
1259         return ConstantInt::get(CI1->getContext(), C1V.udiv(C2V));
1263           return UndefValue::get(CI1->getType());   // MIN_INT / -1 -> undef
1264         return ConstantInt::get(CI1->getContext(), C1V.sdiv(C2V));
1267         return ConstantInt::get(CI1->getContext(), C1V.urem(C2V));
1271           return UndefValue::get(CI1->getType());   // MIN_INT % -1 -> undef
1272         return ConstantInt::get(CI1->getContext(), C1V.srem(C2V));
1274         return ConstantInt::get(CI1->getContext(), C1V & C2V);
1276         return ConstantInt::get(CI1->getContext(), C1V | C2V);
1278         return ConstantInt::get(CI1->getContext(), C1V ^ C2V);
1281           return ConstantInt::get(CI1->getContext(), C1V.shl(C2V));
1285           return ConstantInt::get(CI1->getContext(), C1V.lshr(C2V));
1289           return ConstantInt::get(CI1->getContext(), C1V.ashr(C2V));
1302       if (CI1->isZero()) return C1;