From the flow chart showing the stages of stellar evolution for stars greater than and less than 8 solar masses, the Red Giant would be split into the Planetary Nebula, White Dwarf and Supernova, and Neutron Star/Black Hole.
What is the stellar evolution for stars?
The Red Giant stage is the final stage of evolution for stars with masses less than 8 solar masses. However, for stars with masses greater than 8 solar masses, the Red Supergiant stage is followed by a Supernova, which then produces a Neutron Star or Black Hole.
The life of a star begins in a nebula, a giant cloud of gas and dust. The protostar is hot and dense, and it begins to fuse hydrogen atoms together in its core. When the protostar reaches hydrostatic equilibrium, it enters the main sequence stage of its life.