validate_instruction.cpp | Explore in Territory

// Copyright (c) 2015-2016 The Khronos Group Inc.
//
// 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.

// Performs validation on instructions that appear inside of a SPIR-V block.

#include <cassert>
#include <sstream>
#include <string>
#include <vector>

#include "source/enum_set.h"
#include "source/enum_string_mapping.h"
#include "source/extensions.h"
#include "source/opcode.h"
#include "source/operand.h"
#include "source/spirv_constant.h"
#include "source/spirv_target_env.h"
#include "source/spirv_validator_options.h"
#include "source/util/string_utils.h"
#include "source/val/validate.h"
#include "source/val/validation_state.h"

namespace spvtools {
namespace val {
namespace {

std::string ToString(const CapabilitySet& capabilities,
                     const AssemblyGrammar& grammar) { … }

// Returns capabilities that enable an opcode.  An empty result is interpreted
// as no prohibition of use of the opcode.  If the result is non-empty, then
// the opcode may only be used if at least one of the capabilities is specified
// by the module.
CapabilitySet EnablingCapabilitiesForOp(const ValidationState_t& state,
                                        spv::Op opcode) { … }

// Returns SPV_SUCCESS if, for the given operand, the target environment
// satsifies minimum version requirements, or if the module declares an
// enabling extension for the operand.  Otherwise emit a diagnostic and
// return an error code.
spv_result_t OperandVersionExtensionCheck(
    ValidationState_t& _, const Instruction* inst, size_t which_operand,
    const spv_operand_desc_t& operand_desc, uint32_t word) { … }

// Returns SPV_SUCCESS if the given operand is enabled by capabilities declared
// in the module.  Otherwise issues an error message and returns
// SPV_ERROR_INVALID_CAPABILITY.
spv_result_t CheckRequiredCapabilities(ValidationState_t& state,
                                       const Instruction* inst,
                                       size_t which_operand,
                                       const spv_parsed_operand_t& operand,
                                       uint32_t word) { … }

// Returns SPV_ERROR_INVALID_BINARY and emits a diagnostic if the instruction
// is explicitly reserved in the SPIR-V core spec.  Otherwise return
// SPV_SUCCESS.
spv_result_t ReservedCheck(ValidationState_t& _, const Instruction* inst) { … }

// Returns SPV_ERROR_INVALID_CAPABILITY and emits a diagnostic if the
// instruction is invalid because the required capability isn't declared
// in the module.
spv_result_t CapabilityCheck(ValidationState_t& _, const Instruction* inst) { … }

// Checks that the instruction can be used in this target environment's base
// version. Assumes that CapabilityCheck has checked direct capability
// dependencies for the opcode.
spv_result_t VersionCheck(ValidationState_t& _, const Instruction* inst) { … }

// Checks that the Resuld <id> is within the valid bound.
spv_result_t LimitCheckIdBound(ValidationState_t& _, const Instruction* inst) { … }

// Checks that the number of OpTypeStruct members is within the limit.
spv_result_t LimitCheckStruct(ValidationState_t& _, const Instruction* inst) { … }

// Checks that the number of (literal, label) pairs in OpSwitch is within
// the limit.
spv_result_t LimitCheckSwitch(ValidationState_t& _, const Instruction* inst) { … }

// Ensure the number of variables of the given class does not exceed the
// limit.
spv_result_t LimitCheckNumVars(ValidationState_t& _, const uint32_t var_id,
                               const spv::StorageClass storage_class) { … }

// Parses OpExtension instruction and logs warnings if unsuccessful.
spv_result_t CheckIfKnownExtension(ValidationState_t& _,
                                   const Instruction* inst) { … }

}  // namespace

spv_result_t InstructionPass(ValidationState_t& _, const Instruction* inst) { … }

}  // namespace val
}  // namespace spvtools
chromium/third_party/spirv-tools/src/source/val/validate_instruction.cpp
