static void
validate_deref_chain(nir_deref *deref, validate_state *state)
{
assert(deref->child == NULL || ralloc_parent(deref->child) == deref);
nir_deref *parent = NULL;
while (deref != NULL) {
switch (deref->deref_type) {
case nir_deref_type_array:
assert(deref->type == glsl_get_array_element(parent->type));
if (nir_deref_as_array(deref)->deref_array_type ==
nir_deref_array_type_indirect)
validate_src(&nir_deref_as_array(deref)->indirect, state);
break;
case nir_deref_type_struct:
assert(deref->type ==
glsl_get_struct_field(parent->type,
nir_deref_as_struct(deref)->index));
break;
case nir_deref_type_var:
break;
default:
assert(!"Invalid deref type");
break;
}
parent = deref;
deref = deref->child;
}
}
static void
validate_reg_src(nir_src *src, validate_state *state)
{
assert(src->reg.reg != NULL);
struct hash_entry *entry;
entry = _mesa_hash_table_search(state->regs, src->reg.reg);
assert(entry);
reg_validate_state *reg_state = (reg_validate_state *) entry->data;
if (state->instr) {
_mesa_set_add(reg_state->uses, src);
} else {
assert(state->if_stmt);
_mesa_set_add(reg_state->if_uses, src);
}
if (!src->reg.reg->is_global) {
assert(reg_state->where_defined == state->impl &&
"using a register declared in a different function");
}
assert((src->reg.reg->num_array_elems == 0 ||
src->reg.base_offset < src->reg.reg->num_array_elems) &&
"definitely out-of-bounds array access");
if (src->reg.indirect) {
assert(src->reg.reg->num_array_elems != 0);
assert((src->reg.indirect->is_ssa ||
src->reg.indirect->reg.indirect == NULL) &&
"only one level of indirection allowed");
validate_src(src->reg.indirect, state);
}
}
static void
validate_reg_dest(nir_reg_dest *dest, validate_state *state)
{
assert(dest->reg != NULL);
assert(dest->parent_instr == state->instr);
struct hash_entry *entry2;
entry2 = _mesa_hash_table_search(state->regs, dest->reg);
assert(entry2);
reg_validate_state *reg_state = (reg_validate_state *) entry2->data;
_mesa_set_add(reg_state->defs, dest);
if (!dest->reg->is_global) {
assert(reg_state->where_defined == state->impl &&
"writing to a register declared in a different function");
}
assert((dest->reg->num_array_elems == 0 ||
dest->base_offset < dest->reg->num_array_elems) &&
"definitely out-of-bounds array access");
if (dest->indirect) {
assert(dest->reg->num_array_elems != 0);
assert((dest->indirect->is_ssa || dest->indirect->reg.indirect == NULL) &&
"only one level of indirection allowed");
validate_src(dest->indirect, state);
}
}
static void
validate_deref_chain(nir_deref *deref, nir_variable_mode mode,
validate_state *state)
{
validate_assert(state, deref->child == NULL || ralloc_parent(deref->child) == deref);
nir_deref *parent = NULL;
while (deref != NULL) {
switch (deref->deref_type) {
case nir_deref_type_array:
if (mode == nir_var_shared) {
/* Shared variables have a bit more relaxed rules because we need
* to be able to handle array derefs on vectors. Fortunately,
* nir_lower_io handles these just fine.
*/
validate_assert(state, glsl_type_is_array(parent->type) ||
glsl_type_is_matrix(parent->type) ||
glsl_type_is_vector(parent->type));
} else {
/* Most of NIR cannot handle array derefs on vectors */
validate_assert(state, glsl_type_is_array(parent->type) ||
glsl_type_is_matrix(parent->type));
}
validate_assert(state, deref->type == glsl_get_array_element(parent->type));
if (nir_deref_as_array(deref)->deref_array_type ==
nir_deref_array_type_indirect)
validate_src(&nir_deref_as_array(deref)->indirect, state, 32, 1);
break;
case nir_deref_type_struct:
assume(parent); /* cannot happen: deref change starts w/ nir_deref_var */
validate_assert(state, deref->type ==
glsl_get_struct_field(parent->type,
nir_deref_as_struct(deref)->index));
break;
case nir_deref_type_var:
break;
default:
validate_assert(state, !"Invalid deref type");
break;
}
parent = deref;
deref = deref->child;
}
}
static void
validate_tex_instr(nir_tex_instr *instr, validate_state *state)
{
validate_dest(&instr->dest, state);
bool src_type_seen[nir_num_tex_src_types];
for (unsigned i = 0; i < nir_num_tex_src_types; i++)
src_type_seen[i] = false;
for (unsigned i = 0; i < instr->num_srcs; i++) {
assert(!src_type_seen[instr->src[i].src_type]);
src_type_seen[instr->src[i].src_type] = true;
validate_src(&instr->src[i].src, state);
}
if (instr->sampler != NULL)
validate_deref_var(instr, instr->sampler, state);
}
static void
validate_alu_src(nir_alu_instr *instr, unsigned index, validate_state *state)
{
nir_alu_src *src = &instr->src[index];
unsigned num_components;
unsigned src_bit_size;
if (src->src.is_ssa) {
src_bit_size = src->src.ssa->bit_size;
num_components = src->src.ssa->num_components;
} else {
src_bit_size = src->src.reg.reg->bit_size;
if (src->src.reg.reg->is_packed)
num_components = 4; /* can't check anything */
else
num_components = src->src.reg.reg->num_components;
}
for (unsigned i = 0; i < 4; i++) {
validate_assert(state, src->swizzle[i] < 4);
if (nir_alu_instr_channel_used(instr, index, i))
validate_assert(state, src->swizzle[i] < num_components);
}
nir_alu_type src_type = nir_op_infos[instr->op].input_types[index];
/* 8-bit float isn't a thing */
if (nir_alu_type_get_base_type(src_type) == nir_type_float)
validate_assert(state, src_bit_size == 16 || src_bit_size == 32 || src_bit_size == 64);
if (nir_alu_type_get_type_size(src_type)) {
/* This source has an explicit bit size */
validate_assert(state, nir_alu_type_get_type_size(src_type) == src_bit_size);
} else {
if (!nir_alu_type_get_type_size(nir_op_infos[instr->op].output_type)) {
unsigned dest_bit_size =
instr->dest.dest.is_ssa ? instr->dest.dest.ssa.bit_size
: instr->dest.dest.reg.reg->bit_size;
validate_assert(state, dest_bit_size == src_bit_size);
}
}
validate_src(&src->src, state);
}
static void
validate_phi_src(nir_phi_instr *instr, nir_block *pred, validate_state *state)
{
state->instr = &instr->instr;
validate_assert(state, instr->dest.is_ssa);
exec_list_validate(&instr->srcs);
nir_foreach_phi_src(src, instr) {
if (src->pred == pred) {
validate_assert(state, src->src.is_ssa);
validate_src(&src->src, state, instr->dest.ssa.bit_size,
instr->dest.ssa.num_components);
state->instr = NULL;
return;
}
}
abort();
}
static void
validate_alu_src(nir_alu_instr *instr, unsigned index, validate_state *state)
{
nir_alu_src *src = &instr->src[index];
unsigned num_components;
if (src->src.is_ssa)
num_components = src->src.ssa->num_components;
else {
if (src->src.reg.reg->is_packed)
num_components = 4; /* can't check anything */
else
num_components = src->src.reg.reg->num_components;
}
for (unsigned i = 0; i < 4; i++) {
assert(src->swizzle[i] < 4);
if (nir_alu_instr_channel_used(instr, index, i))
assert(src->swizzle[i] < num_components);
}
validate_src(&src->src, state);
}
static void
validate_intrinsic_instr(nir_intrinsic_instr *instr, validate_state *state)
{
unsigned num_srcs = nir_intrinsic_infos[instr->intrinsic].num_srcs;
for (unsigned i = 0; i < num_srcs; i++) {
unsigned components_read =
nir_intrinsic_infos[instr->intrinsic].src_components[i];
if (components_read == 0)
components_read = instr->num_components;
assert(components_read > 0);
if (instr->src[i].is_ssa) {
assert(components_read <= instr->src[i].ssa->num_components);
} else if (!instr->src[i].reg.reg->is_packed) {
assert(components_read <= instr->src[i].reg.reg->num_components);
}
validate_src(&instr->src[i], state);
}
if (nir_intrinsic_infos[instr->intrinsic].has_dest) {
unsigned components_written =
nir_intrinsic_infos[instr->intrinsic].dest_components;
if (components_written == 0)
components_written = instr->num_components;
assert(components_written > 0);
if (instr->dest.is_ssa) {
assert(components_written <= instr->dest.ssa.num_components);
} else if (!instr->dest.reg.reg->is_packed) {
assert(components_written <= instr->dest.reg.reg->num_components);
}
validate_dest(&instr->dest, state);
}
unsigned num_vars = nir_intrinsic_infos[instr->intrinsic].num_variables;
for (unsigned i = 0; i < num_vars; i++) {
validate_deref_var(instr, instr->variables[i], state);
}
switch (instr->intrinsic) {
case nir_intrinsic_load_var:
assert(instr->variables[0]->var->data.mode != nir_var_shader_out);
break;
case nir_intrinsic_store_var:
assert(instr->variables[0]->var->data.mode != nir_var_shader_in &&
instr->variables[0]->var->data.mode != nir_var_uniform &&
instr->variables[0]->var->data.mode != nir_var_shader_storage);
break;
case nir_intrinsic_copy_var:
assert(instr->variables[0]->var->data.mode != nir_var_shader_in &&
instr->variables[0]->var->data.mode != nir_var_uniform &&
instr->variables[0]->var->data.mode != nir_var_shader_storage);
assert(instr->variables[1]->var->data.mode != nir_var_shader_out);
break;
default:
break;
}
}
static void
validate_intrinsic_instr(nir_intrinsic_instr *instr, validate_state *state)
{
unsigned num_srcs = nir_intrinsic_infos[instr->intrinsic].num_srcs;
for (unsigned i = 0; i < num_srcs; i++) {
unsigned components_read =
nir_intrinsic_infos[instr->intrinsic].src_components[i];
if (components_read == 0)
components_read = instr->num_components;
validate_assert(state, components_read > 0);
if (instr->src[i].is_ssa) {
validate_assert(state, components_read <= instr->src[i].ssa->num_components);
} else if (!instr->src[i].reg.reg->is_packed) {
validate_assert(state, components_read <= instr->src[i].reg.reg->num_components);
}
validate_src(&instr->src[i], state);
}
unsigned num_vars = nir_intrinsic_infos[instr->intrinsic].num_variables;
for (unsigned i = 0; i < num_vars; i++) {
validate_deref_var(instr, instr->variables[i], state);
}
if (nir_intrinsic_infos[instr->intrinsic].has_dest) {
unsigned components_written =
nir_intrinsic_infos[instr->intrinsic].dest_components;
if (components_written == 0)
components_written = instr->num_components;
validate_assert(state, components_written > 0);
if (instr->dest.is_ssa) {
validate_assert(state, components_written <= instr->dest.ssa.num_components);
} else if (!instr->dest.reg.reg->is_packed) {
validate_assert(state, components_written <= instr->dest.reg.reg->num_components);
}
validate_dest(&instr->dest, state);
}
switch (instr->intrinsic) {
case nir_intrinsic_load_var: {
const struct glsl_type *type =
nir_deref_tail(&instr->variables[0]->deref)->type;
validate_assert(state, glsl_type_is_vector_or_scalar(type) ||
(instr->variables[0]->var->data.mode == nir_var_uniform &&
glsl_get_base_type(type) == GLSL_TYPE_SUBROUTINE));
validate_assert(state, instr->num_components == glsl_get_vector_elements(type));
break;
}
case nir_intrinsic_store_var: {
const struct glsl_type *type =
nir_deref_tail(&instr->variables[0]->deref)->type;
validate_assert(state, glsl_type_is_vector_or_scalar(type) ||
(instr->variables[0]->var->data.mode == nir_var_uniform &&
glsl_get_base_type(type) == GLSL_TYPE_SUBROUTINE));
validate_assert(state, instr->num_components == glsl_get_vector_elements(type));
validate_assert(state, instr->variables[0]->var->data.mode != nir_var_shader_in &&
instr->variables[0]->var->data.mode != nir_var_uniform &&
instr->variables[0]->var->data.mode != nir_var_shader_storage);
validate_assert(state, (nir_intrinsic_write_mask(instr) & ~((1 << instr->num_components) - 1)) == 0);
break;
}
case nir_intrinsic_copy_var:
validate_assert(state, nir_deref_tail(&instr->variables[0]->deref)->type ==
nir_deref_tail(&instr->variables[1]->deref)->type);
validate_assert(state, instr->variables[0]->var->data.mode != nir_var_shader_in &&
instr->variables[0]->var->data.mode != nir_var_uniform &&
instr->variables[0]->var->data.mode != nir_var_shader_storage);
break;
default:
break;
}
}
