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ir3: use nir_lower_bit_size for 8-bit bit_count

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8-bit bit_count cannot simply use the masked result of a 16-bit
bit_count. Make sure it is properly lowered to a 16-bit bit_count.

Signed-off-by: Job Noorman <jnoorman@igalia.com>
Fixes: 8aa2cad5df ("ir3: lower relevant 8-bit ALU ops in nir_lower_bit_size")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37116>
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Job Noorman 2025-09-01 12:25:07 +02:00 • committed by Marge Bot
parent 4035520ca9
commit 603d6fe240
1 changed files with 1 additions and 0 deletions
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src/freedreno/ir3/ir3_nir.c
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@ -265,6 +265,7 @@ ir3_lower_bit_size(const nir_instr *instr, UNUSED void *data)
case nir_op_ine:
case nir_op_uge:
case nir_op_ult:
case nir_op_bit_count:
return nir_src_bit_size(alu->src[0].src) == 8 ? 16 : 0;
default:
break;