[fijal]

Hi, I'm Maciek, I work on compilers. I would love to know how branch prediction in modern CPUs work, sadly they won't tell me (trade secrets).

You should really improve your metaphors.

[ectoplasm]

Just search ACM for branch prediction papers at ASPLOS or similar conferences and look for corporate affiliation. IBM, Intel, and others routinely publish this stuff. It's usually patented first, so you can also check the USPTO.