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469 lines
18 KiB
469 lines
18 KiB
// Copyright (c) 2018 Google LLC.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "source/opcode.h"
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#include "source/val/instruction.h"
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#include "source/val/validate.h"
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#include "source/val/validation_state.h"
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namespace spvtools {
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namespace val {
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namespace {
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spv_result_t ValidateConstantBool(ValidationState_t& _,
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const Instruction* inst) {
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auto type = _.FindDef(inst->type_id());
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if (!type || type->opcode() != SpvOpTypeBool) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< "Op" << spvOpcodeString(inst->opcode()) << " Result Type <id> '"
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<< _.getIdName(inst->type_id()) << "' is not a boolean type.";
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}
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return SPV_SUCCESS;
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}
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spv_result_t ValidateConstantComposite(ValidationState_t& _,
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const Instruction* inst) {
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std::string opcode_name = std::string("Op") + spvOpcodeString(inst->opcode());
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const auto result_type = _.FindDef(inst->type_id());
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if (!result_type || !spvOpcodeIsComposite(result_type->opcode())) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Result Type <id> '"
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<< _.getIdName(inst->type_id()) << "' is not a composite type.";
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}
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const auto constituent_count = inst->words().size() - 3;
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switch (result_type->opcode()) {
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case SpvOpTypeVector: {
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const auto component_count = result_type->GetOperandAs<uint32_t>(2);
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if (component_count != constituent_count) {
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// TODO: Output ID's on diagnostic
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name
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<< " Constituent <id> count does not match "
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"Result Type <id> '"
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<< _.getIdName(result_type->id())
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<< "'s vector component count.";
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}
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const auto component_type =
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_.FindDef(result_type->GetOperandAs<uint32_t>(1));
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if (!component_type) {
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return _.diag(SPV_ERROR_INVALID_ID, result_type)
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<< "Component type is not defined.";
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}
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for (size_t constituent_index = 2;
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constituent_index < inst->operands().size(); constituent_index++) {
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const auto constituent_id =
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inst->GetOperandAs<uint32_t>(constituent_index);
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const auto constituent = _.FindDef(constituent_id);
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if (!constituent ||
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!spvOpcodeIsConstantOrUndef(constituent->opcode())) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(constituent_id)
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<< "' is not a constant or undef.";
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}
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const auto constituent_result_type = _.FindDef(constituent->type_id());
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if (!constituent_result_type ||
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component_type->opcode() != constituent_result_type->opcode()) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(constituent_id)
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<< "'s type does not match Result Type <id> '"
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<< _.getIdName(result_type->id()) << "'s vector element type.";
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}
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}
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} break;
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case SpvOpTypeMatrix: {
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const auto column_count = result_type->GetOperandAs<uint32_t>(2);
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if (column_count != constituent_count) {
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// TODO: Output ID's on diagnostic
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name
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<< " Constituent <id> count does not match "
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"Result Type <id> '"
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<< _.getIdName(result_type->id()) << "'s matrix column count.";
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}
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const auto column_type = _.FindDef(result_type->words()[2]);
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if (!column_type) {
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return _.diag(SPV_ERROR_INVALID_ID, result_type)
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<< "Column type is not defined.";
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}
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const auto component_count = column_type->GetOperandAs<uint32_t>(2);
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const auto component_type =
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_.FindDef(column_type->GetOperandAs<uint32_t>(1));
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if (!component_type) {
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return _.diag(SPV_ERROR_INVALID_ID, column_type)
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<< "Component type is not defined.";
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}
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for (size_t constituent_index = 2;
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constituent_index < inst->operands().size(); constituent_index++) {
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const auto constituent_id =
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inst->GetOperandAs<uint32_t>(constituent_index);
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const auto constituent = _.FindDef(constituent_id);
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if (!constituent ||
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!spvOpcodeIsConstantOrUndef(constituent->opcode())) {
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// The message says "... or undef" because the spec does not say
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// undef is a constant.
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(constituent_id)
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<< "' is not a constant or undef.";
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}
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const auto vector = _.FindDef(constituent->type_id());
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if (!vector) {
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return _.diag(SPV_ERROR_INVALID_ID, constituent)
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<< "Result type is not defined.";
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}
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if (column_type->opcode() != vector->opcode()) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(constituent_id)
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<< "' type does not match Result Type <id> '"
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<< _.getIdName(result_type->id()) << "'s matrix column type.";
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}
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const auto vector_component_type =
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_.FindDef(vector->GetOperandAs<uint32_t>(1));
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if (component_type->id() != vector_component_type->id()) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(constituent_id)
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<< "' component type does not match Result Type <id> '"
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<< _.getIdName(result_type->id())
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<< "'s matrix column component type.";
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}
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if (component_count != vector->words()[3]) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(constituent_id)
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<< "' vector component count does not match Result Type <id> '"
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<< _.getIdName(result_type->id())
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<< "'s vector component count.";
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}
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}
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} break;
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case SpvOpTypeArray: {
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auto element_type = _.FindDef(result_type->GetOperandAs<uint32_t>(1));
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if (!element_type) {
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return _.diag(SPV_ERROR_INVALID_ID, result_type)
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<< "Element type is not defined.";
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}
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const auto length = _.FindDef(result_type->GetOperandAs<uint32_t>(2));
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if (!length) {
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return _.diag(SPV_ERROR_INVALID_ID, result_type)
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<< "Length is not defined.";
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}
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bool is_int32;
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bool is_const;
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uint32_t value;
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std::tie(is_int32, is_const, value) = _.EvalInt32IfConst(length->id());
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if (is_int32 && is_const && value != constituent_count) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name
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<< " Constituent count does not match "
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"Result Type <id> '"
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<< _.getIdName(result_type->id()) << "'s array length.";
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}
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for (size_t constituent_index = 2;
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constituent_index < inst->operands().size(); constituent_index++) {
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const auto constituent_id =
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inst->GetOperandAs<uint32_t>(constituent_index);
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const auto constituent = _.FindDef(constituent_id);
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if (!constituent ||
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!spvOpcodeIsConstantOrUndef(constituent->opcode())) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(constituent_id)
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<< "' is not a constant or undef.";
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}
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const auto constituent_type = _.FindDef(constituent->type_id());
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if (!constituent_type) {
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return _.diag(SPV_ERROR_INVALID_ID, constituent)
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<< "Result type is not defined.";
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}
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if (element_type->id() != constituent_type->id()) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(constituent_id)
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<< "'s type does not match Result Type <id> '"
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<< _.getIdName(result_type->id()) << "'s array element type.";
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}
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}
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} break;
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case SpvOpTypeStruct: {
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const auto member_count = result_type->words().size() - 2;
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if (member_count != constituent_count) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(inst->type_id())
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<< "' count does not match Result Type <id> '"
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<< _.getIdName(result_type->id()) << "'s struct member count.";
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}
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for (uint32_t constituent_index = 2, member_index = 1;
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constituent_index < inst->operands().size();
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constituent_index++, member_index++) {
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const auto constituent_id =
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inst->GetOperandAs<uint32_t>(constituent_index);
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const auto constituent = _.FindDef(constituent_id);
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if (!constituent ||
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!spvOpcodeIsConstantOrUndef(constituent->opcode())) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(constituent_id)
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<< "' is not a constant or undef.";
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}
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const auto constituent_type = _.FindDef(constituent->type_id());
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if (!constituent_type) {
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return _.diag(SPV_ERROR_INVALID_ID, constituent)
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<< "Result type is not defined.";
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}
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const auto member_type_id =
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result_type->GetOperandAs<uint32_t>(member_index);
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const auto member_type = _.FindDef(member_type_id);
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if (!member_type || member_type->id() != constituent_type->id()) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(constituent_id)
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<< "' type does not match the Result Type <id> '"
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<< _.getIdName(result_type->id()) << "'s member type.";
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}
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}
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} break;
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case SpvOpTypeCooperativeMatrixNV: {
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if (1 != constituent_count) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(inst->type_id()) << "' count must be one.";
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}
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const auto constituent_id = inst->GetOperandAs<uint32_t>(2);
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const auto constituent = _.FindDef(constituent_id);
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if (!constituent || !spvOpcodeIsConstantOrUndef(constituent->opcode())) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(constituent_id)
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<< "' is not a constant or undef.";
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}
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const auto constituent_type = _.FindDef(constituent->type_id());
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if (!constituent_type) {
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return _.diag(SPV_ERROR_INVALID_ID, constituent)
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<< "Result type is not defined.";
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}
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const auto component_type_id = result_type->GetOperandAs<uint32_t>(1);
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const auto component_type = _.FindDef(component_type_id);
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if (!component_type || component_type->id() != constituent_type->id()) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< opcode_name << " Constituent <id> '"
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<< _.getIdName(constituent_id)
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<< "' type does not match the Result Type <id> '"
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<< _.getIdName(result_type->id()) << "'s component type.";
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}
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} break;
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default:
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break;
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}
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return SPV_SUCCESS;
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}
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spv_result_t ValidateConstantSampler(ValidationState_t& _,
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const Instruction* inst) {
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const auto result_type = _.FindDef(inst->type_id());
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if (!result_type || result_type->opcode() != SpvOpTypeSampler) {
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return _.diag(SPV_ERROR_INVALID_ID, result_type)
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<< "OpConstantSampler Result Type <id> '"
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<< _.getIdName(inst->type_id()) << "' is not a sampler type.";
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}
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return SPV_SUCCESS;
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}
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// True if instruction defines a type that can have a null value, as defined by
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// the SPIR-V spec. Tracks composite-type components through module to check
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// nullability transitively.
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bool IsTypeNullable(const std::vector<uint32_t>& instruction,
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const ValidationState_t& _) {
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uint16_t opcode;
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uint16_t word_count;
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spvOpcodeSplit(instruction[0], &word_count, &opcode);
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switch (static_cast<SpvOp>(opcode)) {
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case SpvOpTypeBool:
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case SpvOpTypeInt:
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case SpvOpTypeFloat:
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case SpvOpTypeEvent:
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case SpvOpTypeDeviceEvent:
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case SpvOpTypeReserveId:
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case SpvOpTypeQueue:
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return true;
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case SpvOpTypeArray:
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case SpvOpTypeMatrix:
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case SpvOpTypeCooperativeMatrixNV:
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case SpvOpTypeVector: {
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auto base_type = _.FindDef(instruction[2]);
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return base_type && IsTypeNullable(base_type->words(), _);
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}
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case SpvOpTypeStruct: {
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for (size_t elementIndex = 2; elementIndex < instruction.size();
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++elementIndex) {
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auto element = _.FindDef(instruction[elementIndex]);
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if (!element || !IsTypeNullable(element->words(), _)) return false;
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}
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return true;
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}
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case SpvOpTypePointer:
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if (instruction[2] == SpvStorageClassPhysicalStorageBuffer) {
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return false;
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}
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return true;
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default:
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return false;
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}
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}
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spv_result_t ValidateConstantNull(ValidationState_t& _,
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const Instruction* inst) {
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const auto result_type = _.FindDef(inst->type_id());
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if (!result_type || !IsTypeNullable(result_type->words(), _)) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< "OpConstantNull Result Type <id> '"
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<< _.getIdName(inst->type_id()) << "' cannot have a null value.";
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}
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return SPV_SUCCESS;
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}
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// Validates that OpSpecConstant specializes to either int or float type.
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spv_result_t ValidateSpecConstant(ValidationState_t& _,
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const Instruction* inst) {
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// Operand 0 is the <id> of the type that we're specializing to.
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auto type_id = inst->GetOperandAs<const uint32_t>(0);
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auto type_instruction = _.FindDef(type_id);
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auto type_opcode = type_instruction->opcode();
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if (type_opcode != SpvOpTypeInt && type_opcode != SpvOpTypeFloat) {
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return _.diag(SPV_ERROR_INVALID_DATA, inst) << "Specialization constant "
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"must be an integer or "
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"floating-point number.";
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}
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return SPV_SUCCESS;
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}
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spv_result_t ValidateSpecConstantOp(ValidationState_t& _,
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const Instruction* inst) {
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const auto op = inst->GetOperandAs<SpvOp>(2);
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// The binary parser already ensures that the op is valid for *some*
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// environment. Here we check restrictions.
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switch (op) {
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case SpvOpQuantizeToF16:
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if (!_.HasCapability(SpvCapabilityShader)) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< "Specialization constant operation " << spvOpcodeString(op)
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<< " requires Shader capability";
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}
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break;
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case SpvOpUConvert:
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if (!_.features().uconvert_spec_constant_op &&
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!_.HasCapability(SpvCapabilityKernel)) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< "Prior to SPIR-V 1.4, specialization constant operation "
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"UConvert requires Kernel capability or extension "
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"SPV_AMD_gpu_shader_int16";
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}
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break;
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case SpvOpConvertFToS:
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case SpvOpConvertSToF:
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case SpvOpConvertFToU:
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case SpvOpConvertUToF:
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case SpvOpConvertPtrToU:
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case SpvOpConvertUToPtr:
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case SpvOpGenericCastToPtr:
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case SpvOpPtrCastToGeneric:
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case SpvOpBitcast:
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case SpvOpFNegate:
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case SpvOpFAdd:
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case SpvOpFSub:
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case SpvOpFMul:
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case SpvOpFDiv:
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case SpvOpFRem:
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case SpvOpFMod:
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case SpvOpAccessChain:
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case SpvOpInBoundsAccessChain:
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case SpvOpPtrAccessChain:
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case SpvOpInBoundsPtrAccessChain:
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if (!_.HasCapability(SpvCapabilityKernel)) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
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<< "Specialization constant operation " << spvOpcodeString(op)
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<< " requires Kernel capability";
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}
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break;
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default:
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break;
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}
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// TODO(dneto): Validate result type and arguments to the various operations.
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return SPV_SUCCESS;
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}
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} // namespace
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spv_result_t ConstantPass(ValidationState_t& _, const Instruction* inst) {
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switch (inst->opcode()) {
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case SpvOpConstantTrue:
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case SpvOpConstantFalse:
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case SpvOpSpecConstantTrue:
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case SpvOpSpecConstantFalse:
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if (auto error = ValidateConstantBool(_, inst)) return error;
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break;
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case SpvOpConstantComposite:
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case SpvOpSpecConstantComposite:
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if (auto error = ValidateConstantComposite(_, inst)) return error;
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break;
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case SpvOpConstantSampler:
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if (auto error = ValidateConstantSampler(_, inst)) return error;
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break;
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case SpvOpConstantNull:
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if (auto error = ValidateConstantNull(_, inst)) return error;
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break;
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case SpvOpSpecConstant:
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if (auto error = ValidateSpecConstant(_, inst)) return error;
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break;
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case SpvOpSpecConstantOp:
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if (auto error = ValidateSpecConstantOp(_, inst)) return error;
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break;
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default:
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break;
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}
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// Generally disallow creating 8- or 16-bit constants unless the full
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// capabilities are present.
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if (spvOpcodeIsConstant(inst->opcode()) &&
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_.HasCapability(SpvCapabilityShader) &&
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!_.IsPointerType(inst->type_id()) &&
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_.ContainsLimitedUseIntOrFloatType(inst->type_id())) {
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return _.diag(SPV_ERROR_INVALID_ID, inst)
|
|
<< "Cannot form constants of 8- or 16-bit types";
|
|
}
|
|
|
|
return SPV_SUCCESS;
|
|
}
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|
|
|
} // namespace val
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} // namespace spvtools
|