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bi: Optimize scratch access

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Follow AGX on this, LLVM cause quite a mess with pan_pack and create
uneeded spilling.

Signed-off-by: Mary Guillemard <mary.guillemard@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32720>
This commit is contained in:
Mary Guillemard 2024-12-23 17:08:27 +01:00 • committed by Marge Bot
parent 20970bcd96
commit 1619fc596a
1 changed files with 7 additions and 0 deletions
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7
src/panfrost/compiler/bifrost_compile.c
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@ -5429,6 +5429,13 @@ bifrost_preprocess_nir(nir_shader *nir, unsigned gpu_id)
};
NIR_PASS(_, nir, nir_lower_mem_access_bit_sizes, &mem_size_options);
/* Optimize scratch access */
NIR_PASS(_, nir, nir_lower_scratch_to_var);
NIR_PASS(_, nir, nir_lower_vars_to_scratch, nir_var_function_temp, 256,
vars_to_scratch_size_align_func,
vars_to_scratch_size_align_func);
NIR_PASS(_, nir, nir_lower_indirect_derefs, nir_var_function_temp, ~0);
nir_lower_ssbo_options ssbo_opts = {
.native_loads = pan_arch(gpu_id) >= 9,
.native_offset = pan_arch(gpu_id) >= 9,