Marek Olšák
3943ed8199
ACO is still not perfect:
* It generates s_wait_loadcnt 0x0-0x3 when the only required wait instruction
is s_wait_loadcnt 0x5.
* It generates a lot of unnecessary jumps and blocks for uniform loop breaks.
Only scc1 jumps are necessary to break the loop. This is 10x better than
LLVM, but even ACO might consider using nir_intrinsic_ordered_add_loop_gfx12_amd
for the best performance.
How to print the streamout asm on any GPU:
PIGLIT_PLATFORM=gbm AMD_FORCE_FAMILY=gfx12_16pipe AMD_DEBUG=vs,mono,asm,useaco ../piglit/bin/shader-io-rate vs_out_xfb
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32570>
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