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pan/bi: v2x16 conversions don't replicate

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They swizzle just like anything else.  Technically, we could maybe do a
little better than the generic case for these since they only read 8
bits per 16 bits in the destination but the generic case is correct,
even if it isn't optimal.

Fixes: f7d44a46cd ("pan/bi: Optimize replication")
Reviewed-by: Lars-Ivar Hesselberg Simonsen <lars-ivar.simonsen@arm.com>
Reviewed-by: Christoph Pillmayer <christoph.pillmayer@arm.com>
Reviewed-by: Lorenzo Rossi <lorenzo.rossi@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/40576>
This commit is contained in:
Faith Ekstrand 2026-03-24 18:09:35 -04:00 • committed by Marge Bot
parent dbefdb2376
commit 8dc458225b
1 changed files with 0 additions and 10 deletions
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10
src/panfrost/compiler/bifrost/bi_lower_swizzle.c
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@ -167,16 +167,6 @@ bi_instr_replicates(bi_instr *I, BITSET_WORD *replicates_16)
case BI_OPCODE_V2F32_TO_V2F16:
return bi_is_value_equiv(I->src[0], I->src[1]);
case BI_OPCODE_V2F16_TO_V2S16:
case BI_OPCODE_V2F16_TO_V2U16:
case BI_OPCODE_V2S16_TO_V2F16:
case BI_OPCODE_V2S8_TO_V2F16:
case BI_OPCODE_V2S8_TO_V2S16:
case BI_OPCODE_V2U16_TO_V2F16:
case BI_OPCODE_V2U8_TO_V2F16:
case BI_OPCODE_V2U8_TO_V2U16:
return true;
/* 16-bit transcendentals are defined to output zero in their
* upper half, so they do not replicate
*/