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radv: relax shared alignment requirements in mem_vectorize_callback

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fossil-db (GFX10.3):
Totals from 13 (0.01% of 139391) affected shaders:
CodeSize: 241316 -> 238684 (-1.09%)
Instrs: 42251 -> 41912 (-0.80%); split: -0.81%, +0.01%
Cycles: 1991192 -> 1974668 (-0.83%); split: -0.83%, +0.00%
VMEM: 4067 -> 4102 (+0.86%)
SMEM: 569 -> 578 (+1.58%)
SClause: 848 -> 858 (+1.18%)
Copies: 3077 -> 2992 (-2.76%); split: -3.12%, +0.36%

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8762>
This commit is contained in:
Rhys Perry 2021-01-28 14:33:04 +00:00 • committed by Marge Bot
parent 4feca7ecde
commit c2d57f55a8
1 changed files with 3 additions and 1 deletions
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4
src/amd/vulkan/radv_pipeline.c
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@ -3081,8 +3081,10 @@ mem_vectorize_callback(unsigned align_mul, unsigned align_offset,
FALLTHROUGH;
case nir_intrinsic_load_shared:
case nir_intrinsic_store_shared:
if (bit_size * num_components > 64) /* 96 and 128 bit loads require 128 bit alignment and are split otherwise */
if (bit_size * num_components == 96) /* 96 bit loads require 128 bit alignment and are split otherwise */
return align % 16 == 0;
else if (bit_size * num_components == 128) /* 128 bit loads require 64 bit alignment and are split otherwise */
return align % 8 == 0;
else
return align % (bit_size == 8 ? 2 : 4) == 0;
default: