brute force reverse engineering a mali gpu?

brute force is guessing all possible combinations, it only works for small passwords in a resonable amount of time. It is possible but it would take billions of years to get the source code.

Unfortunately, it's physically impossible. Firstly, as megurineturilli has pointed out, actually guessing a working combination would take billions of years. On top of that, though, there's the issue of comments. These are as much a part of the source code as the executable parts- without them a program is just a long list of somehow relevant commands- but, since the compiled code completely omits them, the only way to reconstruct them is through artificial intelligence, an insider leak, or reverse engineering.

If effective encryption is utilized then you cannot do reverse engineering. My understanding is, about mali gpu software no effective steps have been taken stopping reverse engineering?

My reference to brute force actions was not about decryption. Rather it was setting a frame for what code is relevant and by brute force then test all of them. It was a question, I do not know if one can do it?