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agx: Lower 8-bit ALU

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No hardware support for it.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24635>
This commit is contained in:
Alyssa Rosenzweig
2023-07-06 16:23:12 -04:00
committed by Marge Bot
parent aeac45c188
commit c3b86bcbbc
1 changed files with 18 additions and 0 deletions
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18
src/asahi/compiler/agx_compile.c
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@@ -2405,6 +2405,23 @@ mem_access_size_align_cb(nir_intrinsic_op intrin, uint8_t bytes,
};
}
static unsigned
lower_bit_size_callback(const nir_instr *instr, UNUSED void *_)
{
if (instr->type != nir_instr_type_alu)
return 0;
/* Lower 8-bit ALU to 16-bit. We check the destination, as we do not want to
* lower conversions from 8-bit to larger types. Those conversions get
* implemented natively.
*/
nir_alu_instr *alu = nir_instr_as_alu(instr);
if (alu->dest.dest.ssa.bit_size == 8)
return 16;
else
return 0;
}
static bool
agx_should_dump(nir_shader *nir, unsigned agx_dbg_bit)
{
@@ -2665,6 +2682,7 @@ agx_compile_shader_nir(nir_shader *nir, struct agx_shader_key *key,
.callback = mem_access_size_align_cb,
};
NIR_PASS_V(nir, nir_lower_mem_access_bit_sizes, &lower_mem_access_options);
NIR_PASS_V(nir, nir_lower_bit_size, lower_bit_size_callback, NULL);
NIR_PASS_V(nir, nir_lower_pack);
/* Late blend lowering creates vectors */