* \file nir_opt_intrinsics.c
*/
+static nir_intrinsic_instr *
+lower_subgroups_64bit_split_intrinsic(nir_builder *b, nir_intrinsic_instr *intrin,
+ unsigned int component)
+{
+ nir_ssa_def *comp;
+ if (component == 0)
+ comp = nir_unpack_64_2x32_split_x(b, intrin->src[0].ssa);
+ else
+ comp = nir_unpack_64_2x32_split_y(b, intrin->src[0].ssa);
+
+ nir_intrinsic_instr *intr = nir_intrinsic_instr_create(b->shader, intrin->intrinsic);
+ nir_ssa_dest_init(&intr->instr, &intr->dest, 1, 32, NULL);
+ intr->const_index[0] = intrin->const_index[0];
+ intr->const_index[1] = intrin->const_index[1];
+ intr->src[0] = nir_src_for_ssa(comp);
+ if (nir_intrinsic_infos[intrin->intrinsic].num_srcs == 2)
+ nir_src_copy(&intr->src[1], &intrin->src[1], intr);
+
+ intr->num_components = 1;
+ nir_builder_instr_insert(b, &intr->instr);
+ return intr;
+}
+
+static nir_ssa_def *
+lower_subgroup_op_to_32bit(nir_builder *b, nir_intrinsic_instr *intrin)
+{
+ assert(intrin->src[0].ssa->bit_size == 64);
+ nir_intrinsic_instr *intr_x = lower_subgroups_64bit_split_intrinsic(b, intrin, 0);
+ nir_intrinsic_instr *intr_y = lower_subgroups_64bit_split_intrinsic(b, intrin, 1);
+ return nir_pack_64_2x32_split(b, &intr_x->dest.ssa, &intr_y->dest.ssa);
+}
+
static nir_ssa_def *
ballot_type_to_uint(nir_builder *b, nir_ssa_def *value, unsigned bit_size)
{
}
static nir_ssa_def *
-lower_subgroup_op_to_scalar(nir_builder *b, nir_intrinsic_instr *intrin)
+lower_subgroup_op_to_scalar(nir_builder *b, nir_intrinsic_instr *intrin,
+ bool lower_to_32bit)
{
/* This is safe to call on scalar things but it would be silly */
assert(intrin->dest.ssa.num_components > 1);
chan_intrin->const_index[0] = intrin->const_index[0];
chan_intrin->const_index[1] = intrin->const_index[1];
- nir_builder_instr_insert(b, &chan_intrin->instr);
-
- reads[i] = &chan_intrin->dest.ssa;
+ if (lower_to_32bit && chan_intrin->src[0].ssa->bit_size == 64) {
+ reads[i] = lower_subgroup_op_to_32bit(b, chan_intrin);
+ } else {
+ nir_builder_instr_insert(b, &chan_intrin->instr);
+ reads[i] = &chan_intrin->dest.ssa;
+ }
}
return nir_vec(b, reads, intrin->num_components);
return result;
}
+static nir_ssa_def *
+lower_vote_eq_to_ballot(nir_builder *b, nir_intrinsic_instr *intrin,
+ const nir_lower_subgroups_options *options)
+{
+ assert(intrin->src[0].is_ssa);
+ nir_ssa_def *value = intrin->src[0].ssa;
+
+ /* We have to implicitly lower to scalar */
+ nir_ssa_def *all_eq = NULL;
+ for (unsigned i = 0; i < intrin->num_components; i++) {
+ nir_intrinsic_instr *rfi =
+ nir_intrinsic_instr_create(b->shader,
+ nir_intrinsic_read_first_invocation);
+ nir_ssa_dest_init(&rfi->instr, &rfi->dest,
+ 1, value->bit_size, NULL);
+ rfi->num_components = 1;
+ rfi->src[0] = nir_src_for_ssa(nir_channel(b, value, i));
+ nir_builder_instr_insert(b, &rfi->instr);
+
+ nir_ssa_def *is_eq;
+ if (intrin->intrinsic == nir_intrinsic_vote_feq) {
+ is_eq = nir_feq(b, &rfi->dest.ssa, nir_channel(b, value, i));
+ } else {
+ is_eq = nir_ieq(b, &rfi->dest.ssa, nir_channel(b, value, i));
+ }
+
+ if (all_eq == NULL) {
+ all_eq = is_eq;
+ } else {
+ all_eq = nir_iand(b, all_eq, is_eq);
+ }
+ }
+
+ nir_intrinsic_instr *ballot =
+ nir_intrinsic_instr_create(b->shader, nir_intrinsic_ballot);
+ nir_ssa_dest_init(&ballot->instr, &ballot->dest,
+ 1, options->ballot_bit_size, NULL);
+ ballot->num_components = 1;
+ ballot->src[0] = nir_src_for_ssa(nir_inot(b, all_eq));
+ nir_builder_instr_insert(b, &ballot->instr);
+
+ return nir_ieq(b, &ballot->dest.ssa,
+ nir_imm_intN_t(b, 0, options->ballot_bit_size));
+}
+
static nir_ssa_def *
lower_shuffle(nir_builder *b, nir_intrinsic_instr *intrin,
- bool lower_to_scalar)
+ bool lower_to_scalar, bool lower_to_32bit)
{
nir_ssa_def *index = nir_load_subgroup_invocation(b);
switch (intrin->intrinsic) {
intrin->dest.ssa.bit_size, NULL);
if (lower_to_scalar && shuffle->num_components > 1) {
- return lower_subgroup_op_to_scalar(b, shuffle);
+ return lower_subgroup_op_to_scalar(b, shuffle, lower_to_32bit);
+ } else if (lower_to_32bit && shuffle->src[0].ssa->bit_size == 64) {
+ return lower_subgroup_op_to_32bit(b, shuffle);
} else {
nir_builder_instr_insert(b, &shuffle->instr);
return &shuffle->dest.ssa;
case nir_intrinsic_vote_feq:
case nir_intrinsic_vote_ieq:
if (options->lower_vote_trivial)
- return nir_imm_int(b, NIR_TRUE);
+ return nir_imm_true(b);
+
+ if (options->lower_vote_eq_to_ballot)
+ return lower_vote_eq_to_ballot(b, intrin, options);
if (options->lower_to_scalar && intrin->num_components > 1)
return lower_vote_eq_to_scalar(b, intrin);
case nir_intrinsic_read_invocation:
case nir_intrinsic_read_first_invocation:
if (options->lower_to_scalar && intrin->num_components > 1)
- return lower_subgroup_op_to_scalar(b, intrin);
+ return lower_subgroup_op_to_scalar(b, intrin, false);
break;
case nir_intrinsic_load_subgroup_eq_mask:
assert(intrin->src[1].is_ssa);
return nir_i2b(b, nir_iand(b, nir_ushr(b, int_val,
intrin->src[1].ssa),
- nir_imm_int(b, 1)));
+ nir_imm_intN_t(b, 1, options->ballot_bit_size)));
case nir_intrinsic_ballot_bit_count_reduce:
return nir_bit_count(b, int_val);
case nir_intrinsic_ballot_find_lsb:
case nir_intrinsic_shuffle:
if (options->lower_to_scalar && intrin->num_components > 1)
- return lower_subgroup_op_to_scalar(b, intrin);
+ return lower_subgroup_op_to_scalar(b, intrin, options->lower_shuffle_to_32bit);
+ else if (options->lower_shuffle_to_32bit && intrin->src[0].ssa->bit_size == 64)
+ return lower_subgroup_op_to_32bit(b, intrin);
break;
case nir_intrinsic_shuffle_xor:
case nir_intrinsic_shuffle_up:
case nir_intrinsic_shuffle_down:
if (options->lower_shuffle)
- return lower_shuffle(b, intrin, options->lower_to_scalar);
+ return lower_shuffle(b, intrin, options->lower_to_scalar, options->lower_shuffle_to_32bit);
else if (options->lower_to_scalar && intrin->num_components > 1)
- return lower_subgroup_op_to_scalar(b, intrin);
+ return lower_subgroup_op_to_scalar(b, intrin, options->lower_shuffle_to_32bit);
+ else if (options->lower_shuffle_to_32bit && intrin->src[0].ssa->bit_size == 64)
+ return lower_subgroup_op_to_32bit(b, intrin);
break;
case nir_intrinsic_quad_broadcast:
case nir_intrinsic_quad_swap_vertical:
case nir_intrinsic_quad_swap_diagonal:
if (options->lower_quad)
- return lower_shuffle(b, intrin, options->lower_to_scalar);
+ return lower_shuffle(b, intrin, options->lower_to_scalar, false);
else if (options->lower_to_scalar && intrin->num_components > 1)
- return lower_subgroup_op_to_scalar(b, intrin);
+ return lower_subgroup_op_to_scalar(b, intrin, false);
break;
case nir_intrinsic_reduce:
case nir_intrinsic_inclusive_scan:
case nir_intrinsic_exclusive_scan:
if (options->lower_to_scalar && intrin->num_components > 1)
- return lower_subgroup_op_to_scalar(b, intrin);
+ return lower_subgroup_op_to_scalar(b, intrin, false);
break;
default:
projects / mesa.git / blobdiff