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agx: Implement nir_op_unpack_64_2x32_split_{x,y}

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Used in the umul_extended lowering.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19590>
This commit is contained in:
Alyssa Rosenzweig 2022-10-23 20:45:25 -04:00 • committed by Marge Bot
parent ea88ebefb9
commit 74a884f73c
1 changed files with 13 additions and 0 deletions
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13
src/asahi/compiler/agx_compile.c
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@ -1020,6 +1020,19 @@ agx_emit_alu(agx_builder *b, nir_alu_instr *instr)
return agx_convert_to(b, dst, agx_immediate(mode), s0, AGX_ROUND_RTE);
}
/* Split a 64-bit word into 32-bit parts. Do not use null destinations to
* let us CSE (and coalesce) the splits when both x and y are split.
*/
case nir_op_unpack_64_2x32_split_x:
case nir_op_unpack_64_2x32_split_y:
{
agx_instr *split = agx_split(b, 2, s0);
unsigned comp = instr->op == nir_op_unpack_64_2x32_split_y ? 1 : 0;
split->dest[comp] = dst;
split->dest[1 - comp] = agx_temp(b->shader, dst.size);
return split;
}
case nir_op_vec2:
case nir_op_vec3:
case nir_op_vec4: