SPIRV-Tools/source/val/validate_non_uniform.cpp

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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 "source/val/validate.h"
#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/validation_state.h"
namespace spvtools {
namespace val {
namespace {
spv_result_t ValidateExecutionScope(ValidationState_t& _,
const Instruction* inst, uint32_t scope) {
SpvOp opcode = inst->opcode();
bool is_int32 = false, is_const_int32 = false;
uint32_t value = 0;
std::tie(is_int32, is_const_int32, value) = _.EvalInt32IfConst(scope);
if (!is_int32) {
return _.diag(SPV_ERROR_INVALID_DATA, inst)
<< spvOpcodeString(opcode)
<< ": expected Execution Scope to be a 32-bit int";
}
if (!is_const_int32) {
return SPV_SUCCESS;
}
if (spvIsVulkanEnv(_.context()->target_env) &&
_.context()->target_env != SPV_ENV_VULKAN_1_0 &&
value != SpvScopeSubgroup) {
return _.diag(SPV_ERROR_INVALID_DATA, inst)
<< spvOpcodeString(opcode)
<< ": in Vulkan environment Execution scope is limited to "
"Subgroup";
}
if (value != SpvScopeSubgroup && value != SpvScopeWorkgroup) {
return _.diag(SPV_ERROR_INVALID_DATA, inst)
<< spvOpcodeString(opcode)
<< ": Execution scope is limited to Subgroup or Workgroup";
}
return SPV_SUCCESS;
}
spv_result_t ValidateGroupNonUniformBallotBitCount(ValidationState_t& _,
const Instruction* inst) {
// Scope is already checked by ValidateExecutionScope() above.
const uint32_t result_type = inst->type_id();
if (!_.IsUnsignedIntScalarType(result_type)) {
return _.diag(SPV_ERROR_INVALID_DATA, inst)
<< "Expected Result Type to be an unsigned integer type scalar.";
}
const auto value = inst->GetOperandAs<uint32_t>(4);
const auto value_type = _.FindDef(value)->type_id();
if (!_.IsUnsignedIntVectorType(value_type) ||
_.GetDimension(value_type) != 4) {
return _.diag(SPV_ERROR_INVALID_DATA, inst) << "Expected Value to be a "
"vector of four components "
"of integer type scalar";
}
return SPV_SUCCESS;
}
} // namespace
// Validates correctness of non-uniform group instructions.
spv_result_t NonUniformPass(ValidationState_t& _, const Instruction* inst) {
const SpvOp opcode = inst->opcode();
if (spvOpcodeIsNonUniformGroupOperation(opcode)) {
const uint32_t execution_scope = inst->word(3);
if (auto error = ValidateExecutionScope(_, inst, execution_scope)) {
return error;
}
}
switch (opcode) {
case SpvOpGroupNonUniformBallotBitCount:
return ValidateGroupNonUniformBallotBitCount(_, inst);
default:
break;
}
return SPV_SUCCESS;
}
} // namespace val
} // namespace spvtools