rdna emu (only compute)

an emulator for RDNA (and eventually CDNA) GPUs. most of the focus right now is around RDNA 3.5 and RDNA 3 (these are very similar). the goal is to get correctnes first, and then focus on timing data, debugging, and profiling outputs like sqtt.

• i still need to do a full pass through the code to 1) cut line count 2) make sure the tests are testing the right things and 3) add a lot of comments
• clean up and re-write the docs/ folder (right now it's kind of ai slop)
• make one md file that contains all the documentation about rdna and make sure the emulator lines up with the spec

the repo is probably still called rdna-sim. whoops

instructions left to implement

• s_barrier
• s_delay_alu
• v_dual_* operations (done, tentative implementation is correct)
• buffer_atomic reads and writes to global memory and LDS-
• s_setreg and s_getreg
• accurate s_clause emulation
• s_waitcnt_depctr
• swizzle instructions (ds_swizzle_*)

gpu simulation related items left to implement

• accurate wave scheduling
• resource management
• usage of the flat_scratch memory
• race conditions when reading and writing memory
• trap handler: ttmp0..ttmp15, TBA and TMA
• vscnt and related counters per wave
• accurate wmma simulation

correctness tests / result comparision with kernels run on real amd gpus

sqtt performance trace emulation