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// Copyright (c) 2017 Pierre Moreau
//
// 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.
#include <string>
#include "gmock/gmock.h"
#include "test/link/linker_fixture.h"
namespace spvtools {
namespace {
using ::testing::HasSubstr;
class IdsLimit : public spvtest::LinkerTest {
public:
IdsLimit() { binaries.reserve(2u); }
void SetUp() override {
const uint32_t id_bound = SPV_LIMIT_RESULT_ID_BOUND - 1u;
const uint32_t constant_count =
id_bound -
2u; // One ID is used for TypeBool, and (constant_count + 1) < id_bound
// This is needed, as otherwise the ID bound will get reset to 1 while
// running the RemoveDuplicates pass.
spvtest::Binary common_binary = {
// clang-format off
spv::MagicNumber,
spv::Version,
SPV_GENERATOR_WORD(SPV_GENERATOR_KHRONOS, 0),
id_bound, // NOTE: Bound
0u, // NOTE: Schema; reserved
static_cast<uint32_t>(spv::Op::OpCapability) | 2u << spv::WordCountShift,
static_cast<uint32_t>(spv::Capability::Shader),
static_cast<uint32_t>(spv::Op::OpMemoryModel) | 3u << spv::WordCountShift,
static_cast<uint32_t>(spv::AddressingModel::Logical),
static_cast<uint32_t>(spv::MemoryModel::Simple),
static_cast<uint32_t>(spv::Op::OpTypeBool) | 2u << spv::WordCountShift,
1u // NOTE: Result ID
// clang-format on
};
binaries.push_back({});
spvtest::Binary& binary = binaries.back();
binary.reserve(common_binary.size() + constant_count * 3u);
binary.insert(binary.end(), common_binary.cbegin(), common_binary.cend());
for (uint32_t i = 0u; i < constant_count; ++i) {
binary.push_back(static_cast<uint32_t>(spv::Op::OpConstantTrue) |
3u << spv::WordCountShift);
binary.push_back(1u); // NOTE: Type ID
binary.push_back(2u + i); // NOTE: Result ID
}
}
void TearDown() override { binaries.clear(); }
spvtest::Binaries binaries;
};
spvtest::Binary CreateBinary(uint32_t id_bound) {
return {
// clang-format off
// Header
spv::MagicNumber,
spv::Version,
SPV_GENERATOR_WORD(SPV_GENERATOR_KHRONOS, 0),
id_bound, // NOTE: Bound
0u, // NOTE: Schema; reserved
// OpCapability Shader
static_cast<uint32_t>(spv::Op::OpCapability) | 2u << spv::WordCountShift,
static_cast<uint32_t>(spv::Capability::Shader),
// OpMemoryModel Logical Simple
static_cast<uint32_t>(spv::Op::OpMemoryModel) | 3u << spv::WordCountShift,
static_cast<uint32_t>(spv::AddressingModel::Logical),
static_cast<uint32_t>(spv::MemoryModel::Simple)
// clang-format on
};
}
TEST_F(IdsLimit, DISABLED_UnderLimit) {
spvtest::Binary linked_binary;
ASSERT_EQ(SPV_SUCCESS, Link(binaries, &linked_binary)) << GetErrorMessage();
EXPECT_THAT(GetErrorMessage(), std::string());
EXPECT_EQ(0x3FFFFFu, linked_binary[3]);
}
TEST_F(IdsLimit, DISABLED_OverLimit) {
spvtest::Binary& binary = binaries.back();
const uint32_t id_bound = binary[3];
binary[3] = id_bound + 1u;
binary.push_back(static_cast<uint32_t>(spv::Op::OpConstantFalse) |
3u << spv::WordCountShift);
binary.push_back(1u); // NOTE: Type ID
binary.push_back(id_bound); // NOTE: Result ID
spvtest::Binary linked_binary;
ASSERT_EQ(SPV_SUCCESS, Link(binaries, &linked_binary)) << GetErrorMessage();
EXPECT_THAT(
GetErrorMessage(),
HasSubstr("The minimum limit of IDs, 4194303, was exceeded: 4194304 is "
"the current ID bound."));
EXPECT_EQ(0x400000u, linked_binary[3]);
}
TEST_F(IdsLimit, DISABLED_Overflow) {
spvtest::Binaries binaries = {CreateBinary(0xFFFFFFFFu),
CreateBinary(0x00000002u)};
spvtest::Binary linked_binary;
EXPECT_EQ(SPV_ERROR_INVALID_DATA, Link(binaries, &linked_binary));
EXPECT_THAT(
GetErrorMessage(),
HasSubstr("Too many IDs (4294967296): combining all modules would "
"overflow the 32-bit word of the SPIR-V header."));
}
} // namespace
} // namespace spvtools
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