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ac/nir: round components when lowering 8/16-bit loads to 32-bit

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Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34162>
This commit is contained in:
Rhys Perry 2025-05-08 11:58:57 +01:00 • committed by Marge Bot
parent f538cae743
commit ddef4bddf8
2 changed files with 8 additions and 0 deletions
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2
src/amd/common/nir/ac_nir_lower_mem_access_bit_sizes.c
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@ -103,8 +103,10 @@ lower_mem_access_cb(nir_intrinsic_op intrin, uint8_t bytes, uint8_t bit_size, ui
}
res.num_components = DIV_ROUND_UP(bytes, 4);
res.num_components = nir_round_down_components(res.num_components);
} else {
res.num_components = DIV_ROUND_UP(bytes + max_pad, 4);
res.num_components = nir_round_up_components(res.num_components);
}
res.num_components = MIN2(res.num_components, max_components);
res.bit_size = 32;

6
src/compiler/nir/nir.h
View file

@ -126,6 +126,12 @@ nir_round_up_components(unsigned n)
return (n > 5) ? util_next_power_of_two(n) : n;
}
static inline unsigned
nir_round_down_components(unsigned n)
{
return (n > 5) ? MAX2(1 << util_logbase2(n), 5) : n;
}
static inline nir_component_mask_t
nir_component_mask(unsigned num_components)
{