This movie could be anywhere from 1980s-1990s, English language

A guy builds a girlfriend, she starts as code, he builds her from scratch and she sometimes gets jealous, eventually she becomes a military secret and can beat a super computer. He uploads her to the internet so she can live forever but she takes over and starts carrying out cyber attacks.

When they communicate it’s like her face appears on the computer maybe if im remembering correctly, could be in the form of ascii art on the screen

She may or may not get her own body at some point

By the end I think he has to delete her, I don’t remember if he lives or dies.