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aco: lower 8/16-bit integer arithmetic

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dEQP-VK.spirv_assembly.type.* passes with the features and extensions
enabled.

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/4707>
This commit is contained in:
Rhys Perry 2020-04-06 11:15:00 +01:00
parent bcd9467d5c
commit eeccb1a941
1 changed files with 31 additions and 0 deletions
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31
src/amd/compiler/aco_instruction_selection_setup.cpp
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@ -1018,6 +1018,34 @@ get_io_masks(isel_context *ctx, unsigned shader_count, struct nir_shader *const
}
}
unsigned
lower_bit_size_callback(const nir_alu_instr *alu, void *_)
{
if (nir_op_is_vec(alu->op))
return 0;
unsigned bit_size = alu->dest.dest.ssa.bit_size;
if (nir_alu_instr_is_comparison(alu))
bit_size = nir_src_bit_size(alu->src[0].src);
if (bit_size >= 32 || bit_size == 1)
return 0;
if (alu->op == nir_op_bcsel)
return 0;
const nir_op_info *info = &nir_op_infos[alu->op];
if (info->is_conversion)
return 0;
bool is_integer = info->output_type & (nir_type_uint | nir_type_int);
for (unsigned i = 0; is_integer && (i < info->num_inputs); i++)
is_integer = info->input_types[i] & (nir_type_uint | nir_type_int);
return is_integer ? 32 : 0;
}
void
setup_nir(isel_context *ctx, nir_shader *nir)
{
@ -1062,6 +1090,9 @@ setup_nir(isel_context *ctx, nir_shader *nir)
// TODO: implement logic64 in aco, it's more effective for sgprs
nir_lower_int64(nir, nir->options->lower_int64_options);
if (nir_lower_bit_size(nir, lower_bit_size_callback, NULL))
nir_copy_prop(nir); /* allow nir_opt_idiv_const() to optimize lowered divisions */
nir_opt_idiv_const(nir, 32);
nir_lower_idiv(nir, nir_lower_idiv_precise);