mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-12-29 03:01:08 +00:00
1c11c8690f
According to the SPIRV Spec (2.16.1): * There is at least one OpEntryPoint instruction, unless the Linkage capability is being used. * No function can be targeted by both an OpEntryPoint instruction and an OpFunctionCall instruction. Also updated unit tests to includ OpEntryPoint.
417 lines
12 KiB
C++
417 lines
12 KiB
C++
// Copyright (c) 2016 Google Inc.
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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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// Validation tests for Universal Limits. (Section 2.17 of the SPIR-V Spec)
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#include <sstream>
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#include <string>
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#include <utility>
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#include "gmock/gmock.h"
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#include "unit_spirv.h"
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#include "val_fixtures.h"
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namespace {
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using ::testing::HasSubstr;
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using ::testing::MatchesRegex;
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using std::string;
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using ValidateLimits = spvtest::ValidateBase<bool>;
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string header = R"(
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OpCapability Shader
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OpCapability Linkage
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OpMemoryModel Logical GLSL450
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)";
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TEST_F(ValidateLimits, IdLargerThanBoundBad) {
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string str = header + R"(
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; %i32 has ID 1
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%i32 = OpTypeInt 32 1
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%c = OpConstant %i32 100
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; Fake an instruction with 64 as the result id.
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; !64 = OpConstantNull %i32
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!0x3002e !1 !64
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)";
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CompileSuccessfully(str);
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ASSERT_EQ(SPV_ERROR_INVALID_BINARY, ValidateInstructions());
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EXPECT_THAT(
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getDiagnosticString(),
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HasSubstr("Result <id> '64' must be less than the ID bound '3'."));
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}
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TEST_F(ValidateLimits, IdEqualToBoundBad) {
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string str = header + R"(
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; %i32 has ID 1
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%i32 = OpTypeInt 32 1
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%c = OpConstant %i32 100
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; Fake an instruction with 64 as the result id.
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; !64 = OpConstantNull %i32
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!0x3002e !1 !64
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)";
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CompileSuccessfully(str);
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// The largest ID used in this program is 64. Let's overwrite the ID bound in
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// the header to be 64. This should result in an error because all IDs must
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// satisfy: 0 < id < bound.
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OverwriteAssembledBinary(3, 64);
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ASSERT_EQ(SPV_ERROR_INVALID_BINARY, ValidateInstructions());
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EXPECT_THAT(
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getDiagnosticString(),
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HasSubstr("Result <id> '64' must be less than the ID bound '64'."));
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}
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TEST_F(ValidateLimits, StructNumMembersGood) {
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std::ostringstream spirv;
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spirv << header << R"(
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%1 = OpTypeInt 32 0
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%2 = OpTypeStruct)";
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for (int i = 0; i < 16383; ++i) {
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spirv << " %1";
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}
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CompileSuccessfully(spirv.str());
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ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
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}
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TEST_F(ValidateLimits, StructNumMembersExceededBad) {
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std::ostringstream spirv;
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spirv << header << R"(
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%1 = OpTypeInt 32 0
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%2 = OpTypeStruct)";
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for (int i = 0; i < 16384; ++i) {
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spirv << " %1";
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}
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CompileSuccessfully(spirv.str());
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ASSERT_EQ(SPV_ERROR_INVALID_BINARY, ValidateInstructions());
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EXPECT_THAT(getDiagnosticString(),
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HasSubstr("Number of OpTypeStruct members (16384) has exceeded "
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"the limit (16383)."));
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}
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// Valid: Switch statement has 16,383 branches.
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TEST_F(ValidateLimits, SwitchNumBranchesGood) {
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std::ostringstream spirv;
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spirv << header << R"(
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%1 = OpTypeVoid
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%2 = OpTypeFunction %1
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%3 = OpTypeInt 32 0
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%4 = OpConstant %3 1234
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%5 = OpFunction %1 None %2
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%7 = OpLabel
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%8 = OpIAdd %3 %4 %4
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%9 = OpSwitch %4 %10)";
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// Now add the (literal, label) pairs
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for (int i = 0; i < 16383; ++i) {
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spirv << " 1 %10";
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}
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spirv << R"(
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%10 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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CompileSuccessfully(spirv.str());
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ASSERT_EQ(SPV_SUCCESS, ValidateInstructions());
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}
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// Invalid: Switch statement has 16,384 branches.
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TEST_F(ValidateLimits, SwitchNumBranchesBad) {
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std::ostringstream spirv;
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spirv << header << R"(
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%1 = OpTypeVoid
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%2 = OpTypeFunction %1
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%3 = OpTypeInt 32 0
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%4 = OpConstant %3 1234
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%5 = OpFunction %1 None %2
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%7 = OpLabel
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%8 = OpIAdd %3 %4 %4
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%9 = OpSwitch %4 %10)";
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// Now add the (literal, label) pairs
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for (int i = 0; i < 16384; ++i) {
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spirv << " 1 %10";
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}
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spirv << R"(
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%10 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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CompileSuccessfully(spirv.str());
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ASSERT_EQ(SPV_ERROR_INVALID_BINARY, ValidateInstructions());
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EXPECT_THAT(getDiagnosticString(),
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HasSubstr("Number of (literal, label) pairs in OpSwitch (16384) "
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"exceeds the limit (16383)."));
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}
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// Valid: OpTypeFunction with 255 arguments.
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TEST_F(ValidateLimits, OpTypeFunctionGood) {
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int num_args = 255;
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std::ostringstream spirv;
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spirv << header << R"(
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%1 = OpTypeInt 32 0
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%2 = OpTypeFunction %1)";
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// add parameters
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for (int i = 0; i < num_args; ++i) {
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spirv << " %1";
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}
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CompileSuccessfully(spirv.str());
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EXPECT_EQ(SPV_SUCCESS, ValidateInstructions());
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}
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// Invalid: OpTypeFunction with 256 arguments. (limit is 255 according to the
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// spec Universal Limits (2.17).
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TEST_F(ValidateLimits, OpTypeFunctionBad) {
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int num_args = 256;
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std::ostringstream spirv;
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spirv << header << R"(
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%1 = OpTypeInt 32 0
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%2 = OpTypeFunction %1)";
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for (int i = 0; i < num_args; ++i) {
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spirv << " %1";
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}
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CompileSuccessfully(spirv.str());
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EXPECT_EQ(SPV_ERROR_INVALID_ID, ValidateInstructions());
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EXPECT_THAT(getDiagnosticString(),
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HasSubstr("OpTypeFunction may not take more than 255 arguments. "
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"OpTypeFunction <id> '2' has 256 arguments."));
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}
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// Valid: module has 65,535 global variables.
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TEST_F(ValidateLimits, NumGlobalVarsGood) {
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int num_globals = 65535;
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std::ostringstream spirv;
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spirv << header << R"(
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%int = OpTypeInt 32 0
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%_ptr_int = OpTypePointer Input %int
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)";
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for (int i = 0; i < num_globals; ++i) {
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spirv << "%var_" << i << " = OpVariable %_ptr_int Input\n";
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}
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CompileSuccessfully(spirv.str());
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EXPECT_EQ(SPV_SUCCESS, ValidateInstructions());
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}
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// Invalid: module has 65,536 global variables (limit is 65,535).
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TEST_F(ValidateLimits, NumGlobalVarsBad) {
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int num_globals = 65536;
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std::ostringstream spirv;
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spirv << header << R"(
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%int = OpTypeInt 32 0
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%_ptr_int = OpTypePointer Input %int
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)";
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for (int i = 0; i < num_globals; ++i) {
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spirv << "%var_" << i << " = OpVariable %_ptr_int Input\n";
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}
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CompileSuccessfully(spirv.str());
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EXPECT_EQ(SPV_ERROR_INVALID_BINARY, ValidateInstructions());
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EXPECT_THAT(getDiagnosticString(),
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HasSubstr("Number of Global Variables (Storage Class other than "
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"'Function') exceeded the valid limit (65535)."));
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}
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// Valid: module has 524,287 local variables.
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TEST_F(ValidateLimits, NumLocalVarsGood) {
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int num_locals = 524287;
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std::ostringstream spirv;
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spirv << header << R"(
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%int = OpTypeInt 32 0
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%_ptr_int = OpTypePointer Function %int
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%voidt = OpTypeVoid
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%funct = OpTypeFunction %voidt
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%main = OpFunction %voidt None %funct
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%entry = OpLabel
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)";
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for (int i = 0; i < num_locals; ++i) {
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spirv << "%var_" << i << " = OpVariable %_ptr_int Function\n";
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}
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spirv << R"(
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OpReturn
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OpFunctionEnd
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)";
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CompileSuccessfully(spirv.str());
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EXPECT_EQ(SPV_SUCCESS, ValidateInstructions());
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}
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// Invalid: module has 524,288 local variables (limit is 524,287).
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TEST_F(ValidateLimits, NumLocalVarsBad) {
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int num_locals = 524288;
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std::ostringstream spirv;
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spirv << header << R"(
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%int = OpTypeInt 32 0
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%_ptr_int = OpTypePointer Function %int
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%voidt = OpTypeVoid
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%funct = OpTypeFunction %voidt
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%main = OpFunction %voidt None %funct
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%entry = OpLabel
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)";
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for (int i = 0; i < num_locals; ++i) {
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spirv << "%var_" << i << " = OpVariable %_ptr_int Function\n";
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}
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spirv << R"(
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OpReturn
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OpFunctionEnd
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)";
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CompileSuccessfully(spirv.str());
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EXPECT_EQ(SPV_ERROR_INVALID_BINARY, ValidateInstructions());
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EXPECT_THAT(getDiagnosticString(),
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HasSubstr("Number of local variables ('Function' Storage Class) "
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"exceeded the valid limit (524287)."));
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}
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// Valid: Structure nesting depth of 255.
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TEST_F(ValidateLimits, StructNestingDepthGood) {
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std::ostringstream spirv;
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spirv << header << R"(
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%int = OpTypeInt 32 0
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%s_depth_1 = OpTypeStruct %int
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)";
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for(auto i=2; i<=255; ++i) {
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spirv << "%s_depth_" << i << " = OpTypeStruct %int %s_depth_" << i-1;
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spirv << "\n";
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}
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CompileSuccessfully(spirv.str());
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EXPECT_EQ(SPV_SUCCESS, ValidateInstructions());
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}
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// Invalid: Structure nesting depth of 256.
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TEST_F(ValidateLimits, StructNestingDepthBad) {
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std::ostringstream spirv;
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spirv << header << R"(
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%int = OpTypeInt 32 0
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%s_depth_1 = OpTypeStruct %int
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)";
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for(auto i=2; i<=256; ++i) {
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spirv << "%s_depth_" << i << " = OpTypeStruct %int %s_depth_" << i-1;
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spirv << "\n";
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}
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CompileSuccessfully(spirv.str());
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EXPECT_EQ(SPV_ERROR_INVALID_BINARY, ValidateInstructions());
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EXPECT_THAT(
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getDiagnosticString(),
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HasSubstr(
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"Structure Nesting Depth may not be larger than 255. Found 256."));
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}
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// clang-format off
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// Generates an SPIRV program with the given control flow nesting depth
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void GenerateSpirvProgramWithCfgNestingDepth(std::string& str, int depth) {
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std::ostringstream spirv;
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spirv << header << R"(
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%void = OpTypeVoid
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%3 = OpTypeFunction %void
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%bool = OpTypeBool
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%12 = OpConstantTrue %bool
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%main = OpFunction %void None %3
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%5 = OpLabel
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OpBranch %6
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%6 = OpLabel
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OpLoopMerge %8 %9 None
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OpBranch %10
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%10 = OpLabel
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OpBranchConditional %12 %7 %8
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%7 = OpLabel
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)";
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int first_id = 13;
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int last_id = 14;
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// We already have 1 level of nesting due to the Loop.
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int num_if_conditions = depth-1;
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int largest_index = first_id + 2*num_if_conditions - 2;
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for (int i = first_id; i <= largest_index; i = i + 2) {
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spirv << "OpSelectionMerge %" << i+1 << " None" << "\n";
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spirv << "OpBranchConditional %12 " << "%" << i << " %" << i+1 << "\n";
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spirv << "%" << i << " = OpLabel" << "\n";
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}
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spirv << "OpBranch %9" << "\n";
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for (int i = largest_index+1; i > last_id; i = i - 2) {
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spirv << "%" << i << " = OpLabel" << "\n";
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spirv << "OpBranch %" << i-2 << "\n";
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}
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spirv << "%" << last_id << " = OpLabel" << "\n";
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spirv << "OpBranch %9" << "\n";
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spirv << R"(
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%9 = OpLabel
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OpBranch %6
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%8 = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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str = spirv.str();
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}
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// clang-format on
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// Valid: Control Flow Nesting depth is 1023.
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TEST_F(ValidateLimits, ControlFlowDepthGood) {
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std::string spirv;
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GenerateSpirvProgramWithCfgNestingDepth(spirv, 1023);
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CompileSuccessfully(spirv);
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EXPECT_EQ(SPV_SUCCESS, ValidateInstructions());
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}
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// Invalid: Control Flow Nesting depth is 1024. (limit is 1023).
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TEST_F(ValidateLimits, ControlFlowDepthBad) {
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std::string spirv;
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GenerateSpirvProgramWithCfgNestingDepth(spirv, 1024);
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CompileSuccessfully(spirv);
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EXPECT_EQ(SPV_ERROR_INVALID_CFG, ValidateInstructions());
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EXPECT_THAT(getDiagnosticString(),
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HasSubstr("Maximum Control Flow nesting depth exceeded."));
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}
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// Valid. The purpose here is to test the CFG depth calculation code when a loop
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// continue target is the loop iteself. It also exercises the case where a loop
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// is unreachable.
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TEST_F(ValidateLimits, ControlFlowNoEntryToLoopGood) {
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string str = header + R"(
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OpName %entry "entry"
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OpName %loop "loop"
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OpName %exit "exit"
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%voidt = OpTypeVoid
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%funct = OpTypeFunction %voidt
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%main = OpFunction %voidt None %funct
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%entry = OpLabel
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OpBranch %exit
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%loop = OpLabel
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OpLoopMerge %loop %loop None
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OpBranch %loop
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%exit = OpLabel
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OpReturn
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OpFunctionEnd
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)";
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CompileSuccessfully(str);
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EXPECT_EQ(SPV_SUCCESS, ValidateInstructions());
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}
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} // anonymous namespace
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