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// Copyright (c) 2018 Google LLC.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Validates correctness of barrier SPIR-V instructions.
#include <string>
#include "source/diagnostic.h"
#include "source/opcode.h"
#include "source/spirv_constant.h"
#include "source/spirv_target_env.h"
#include "source/util/bitutils.h"
#include "source/val/instruction.h"
#include "source/val/validate.h"
#include "source/val/validate_memory_semantics.h"
#include "source/val/validate_scopes.h"
#include "source/val/validation_state.h"
namespace spvtools {
namespace val {
// Validates correctness of barrier instructions.
spv_result_t BarriersPass(ValidationState_t& _, const Instruction* inst) {
const SpvOp opcode = inst->opcode();
const uint32_t result_type = inst->type_id();
switch (opcode) {
case SpvOpControlBarrier: {
if (_.version() < SPV_SPIRV_VERSION_WORD(1, 3)) {
_.function(inst->function()->id())
->RegisterExecutionModelLimitation(
[](SpvExecutionModel model, std::string* message) {
if (model != SpvExecutionModelTessellationControl &&
model != SpvExecutionModelGLCompute &&
model != SpvExecutionModelKernel &&
model != SpvExecutionModelTaskNV &&
model != SpvExecutionModelMeshNV) {
if (message) {
*message =
"OpControlBarrier requires one of the following "
"Execution "
"Models: TessellationControl, GLCompute, Kernel, "
"MeshNV or TaskNV";
}
return false;
}
return true;
});
}
const uint32_t execution_scope = inst->word(1);
const uint32_t memory_scope = inst->word(2);
if (auto error = ValidateExecutionScope(_, inst, execution_scope)) {
return error;
}
if (auto error = ValidateMemoryScope(_, inst, memory_scope)) {
return error;
}
if (auto error = ValidateMemorySemantics(_, inst, 2, memory_scope)) {
return error;
}
break;
}
case SpvOpMemoryBarrier: {
const uint32_t memory_scope = inst->word(1);
if (auto error = ValidateMemoryScope(_, inst, memory_scope)) {
return error;
}
if (auto error = ValidateMemorySemantics(_, inst, 1, memory_scope)) {
return error;
}
break;
}
case SpvOpNamedBarrierInitialize: {
if (_.GetIdOpcode(result_type) != SpvOpTypeNamedBarrier) {
return _.diag(SPV_ERROR_INVALID_DATA, inst)
<< spvOpcodeString(opcode)
<< ": expected Result Type to be OpTypeNamedBarrier";
}
const uint32_t subgroup_count_type = _.GetOperandTypeId(inst, 2);
if (!_.IsIntScalarType(subgroup_count_type) ||
_.GetBitWidth(subgroup_count_type) != 32) {
return _.diag(SPV_ERROR_INVALID_DATA, inst)
<< spvOpcodeString(opcode)
<< ": expected Subgroup Count to be a 32-bit int";
}
break;
}
case SpvOpMemoryNamedBarrier: {
const uint32_t named_barrier_type = _.GetOperandTypeId(inst, 0);
if (_.GetIdOpcode(named_barrier_type) != SpvOpTypeNamedBarrier) {
return _.diag(SPV_ERROR_INVALID_DATA, inst)
<< spvOpcodeString(opcode)
<< ": expected Named Barrier to be of type OpTypeNamedBarrier";
}
const uint32_t memory_scope = inst->word(2);
if (auto error = ValidateMemoryScope(_, inst, memory_scope)) {
return error;
}
if (auto error = ValidateMemorySemantics(_, inst, 2, memory_scope)) {
return error;
}
break;
}
default:
break;
}
return SPV_SUCCESS;
}
} // namespace val
} // namespace spvtools
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