* Use a new approach for shader BRX targets
* Make shader cache actually work
* Improve the shader pattern matching a bit
* Extend LDC search to predecessor blocks, catches more cases
* Nit
* Only save the amount of constant buffer data actually used. Avoids crashes on partially mapped buffers
* Ignore Rd on predicate instructions, as they do not have a Rd register (catches more cases)
* Add support for CAL and RET shader instructions
* Remove unused stuff
* Fix a bug that could cause the wrong values to be passed to a function
* Avoid repopulating function id dictionary every time
* PR feedback
* Fix vertex shader A/B merge
