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NIR+ACO is the best SSA-based shader compiler for AMD GPUs that exists. There are many reasons why NIR+ACO is better than LLVM, and I have a long list that I've collected over the years, but the major ones are better GPU performance (faster GPU memory access thanks to better clauses and scheduling, a lot less SGPR/VGPR spilling, better loop support, slightly smaller shader binaries), 8x lower shader compile times, and smaller memory footprint of the IR. It also shows that NIR is a mature SSA-based shader compiler that helps drivers generate optimized code very quickly. And most importantly, radeonsi has slightly better Viewperf performance with NIR+ACO than LLVM, and that's difficult to ignore. Reviewed-by: Qiang Yu <yuq825@gmail.com> Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38070> |
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| _extra | ||
| _exts | ||
| ci | ||
| drivers | ||
| gallium | ||
| header-stubs | ||
| isl | ||
| mesa3d_theme | ||
| nir | ||
| relnotes | ||
| spirv | ||
| vulkan | ||
| amber.rst | ||
| android.rst | ||
| application-issues.rst | ||
| ARB_color_buffer_float.txt | ||
| bugs.rst | ||
| codingstyle.rst | ||
| conf.py | ||
| conform.rst | ||
| debugging.rst | ||
| devinfo.rst | ||
| dispatch.rst | ||
| download.rst | ||
| egl.rst | ||
| envvars.rst | ||
| extensions.rst | ||
| faq.rst | ||
| favicon.ico | ||
| favicon.svg | ||
| features.txt | ||
| gitlab-ci-inc.yml | ||
| gitlab-ci.yml | ||
| gpu-perf-tracing.rst | ||
| gpuvis.rst | ||
| helpwanted.rst | ||
| history.rst | ||
| index.rst | ||
| install.rst | ||
| isaspec.rst | ||
| libGL.txt | ||
| license.rst | ||
| lists.rst | ||
| macos.rst | ||
| meson.build | ||
| meson.rst | ||
| opengles.rst | ||
| perf.rst | ||
| perfetto.rst | ||
| precompiled.rst | ||
| README.UVD | ||
| README.VCE | ||
| release-calendar.csv | ||
| release-calendar.rst | ||
| release-maintainers-keys.asc | ||
| releasing.rst | ||
| relnotes.rst | ||
| repository.rst | ||
| rust.rst | ||
| rusticl.rst | ||
| shading.rst | ||
| sourcetree.rst | ||
| submittingpatches.rst | ||
| systems.rst | ||
| teflon.rst | ||
| u_trace.rst | ||
| utilities.rst | ||
| viewperf.rst | ||
| xlibdriver.rst | ||
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