mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-11-30 06:50:06 +00:00
841 lines
36 KiB
C++
841 lines
36 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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#include "assembly_builder.h"
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#include "pass_fixture.h"
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#include "pass_utils.h"
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#include <algorithm>
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#include <cstdarg>
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#include <iostream>
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#include <sstream>
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#include <unordered_set>
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namespace {
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using namespace spvtools;
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using EliminateDeadConstantBasicTest = PassTest<::testing::Test>;
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TEST_F(EliminateDeadConstantBasicTest, BasicAllDeadConstants) {
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const std::vector<const char*> text = {
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// clang-format off
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"OpCapability Shader",
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"OpCapability Float64",
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"%1 = OpExtInstImport \"GLSL.std.450\"",
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"OpMemoryModel Logical GLSL450",
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"OpEntryPoint Vertex %main \"main\"",
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"OpName %main \"main\"",
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"%void = OpTypeVoid",
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"%4 = OpTypeFunction %void",
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"%bool = OpTypeBool",
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"%6 = OpConstantTrue %bool",
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"%7 = OpConstantFalse %bool",
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"%int = OpTypeInt 32 1",
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"%9 = OpConstant %int 1",
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"%uint = OpTypeInt 32 0",
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"%11 = OpConstant %uint 2",
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"%float = OpTypeFloat 32",
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"%13 = OpConstant %float 3.14",
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"%double = OpTypeFloat 64",
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"%15 = OpConstant %double 3.14159265358979",
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"%main = OpFunction %void None %4",
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"%16 = OpLabel",
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"OpReturn",
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"OpFunctionEnd",
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// clang-format on
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};
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// None of the above constants is ever used, so all of them should be
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// eliminated.
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const char* const_decl_opcodes[] = {
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" OpConstantTrue ", " OpConstantFalse ", " OpConstant ",
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};
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// Skip lines that have any one of const_decl_opcodes.
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const std::string expected_disassembly =
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SelectiveJoin(text, [&const_decl_opcodes](const char* line) {
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return std::any_of(
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std::begin(const_decl_opcodes), std::end(const_decl_opcodes),
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[&line](const char* const_decl_op) {
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return std::string(line).find(const_decl_op) != std::string::npos;
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});
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});
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SinglePassRunAndCheck<opt::EliminateDeadConstantPass>(
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JoinAllInsts(text), expected_disassembly, /* skip_nop = */ true);
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}
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TEST_F(EliminateDeadConstantBasicTest, BasicNoneDeadConstants) {
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const std::vector<const char*> text = {
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// clang-format off
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"OpCapability Shader",
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"OpCapability Float64",
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"%1 = OpExtInstImport \"GLSL.std.450\"",
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"OpMemoryModel Logical GLSL450",
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"OpEntryPoint Vertex %main \"main\"",
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"OpName %main \"main\"",
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"OpName %btv \"btv\"",
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"OpName %bfv \"bfv\"",
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"OpName %iv \"iv\"",
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"OpName %uv \"uv\"",
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"OpName %fv \"fv\"",
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"OpName %dv \"dv\"",
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"%void = OpTypeVoid",
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"%10 = OpTypeFunction %void",
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"%bool = OpTypeBool",
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"%_ptr_Function_bool = OpTypePointer Function %bool",
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"%13 = OpConstantTrue %bool",
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"%14 = OpConstantFalse %bool",
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"%int = OpTypeInt 32 1",
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"%_ptr_Function_int = OpTypePointer Function %int",
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"%17 = OpConstant %int 1",
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"%uint = OpTypeInt 32 0",
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"%_ptr_Function_uint = OpTypePointer Function %uint",
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"%20 = OpConstant %uint 2",
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"%float = OpTypeFloat 32",
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"%_ptr_Function_float = OpTypePointer Function %float",
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"%23 = OpConstant %float 3.14",
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"%double = OpTypeFloat 64",
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"%_ptr_Function_double = OpTypePointer Function %double",
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"%26 = OpConstant %double 3.14159265358979",
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"%main = OpFunction %void None %10",
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"%27 = OpLabel",
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"%btv = OpVariable %_ptr_Function_bool Function",
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"%bfv = OpVariable %_ptr_Function_bool Function",
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"%iv = OpVariable %_ptr_Function_int Function",
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"%uv = OpVariable %_ptr_Function_uint Function",
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"%fv = OpVariable %_ptr_Function_float Function",
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"%dv = OpVariable %_ptr_Function_double Function",
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"OpStore %btv %13",
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"OpStore %bfv %14",
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"OpStore %iv %17",
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"OpStore %uv %20",
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"OpStore %fv %23",
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"OpStore %dv %26",
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"OpReturn",
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"OpFunctionEnd",
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// clang-format on
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};
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// All constants are used, so none of them should be eliminated.
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SinglePassRunAndCheck<opt::EliminateDeadConstantPass>(
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JoinAllInsts(text), JoinAllInsts(text), /* skip_nop = */ true);
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}
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struct EliminateDeadConstantTestCase {
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// Type declarations and constants that should be kept.
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std::vector<std::string> used_consts;
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// Instructions that refer to constants, this is added to create uses for
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// some constants so they won't be treated as dead constants.
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std::vector<std::string> main_insts;
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// Dead constants that should be removed.
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std::vector<std::string> dead_consts;
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};
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// All types that are potentially required in EliminateDeadConstantTest.
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const std::vector<std::string> CommonTypes = {
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// clang-format off
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// scalar types
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"%bool = OpTypeBool",
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"%uint = OpTypeInt 32 0",
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"%int = OpTypeInt 32 1",
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"%float = OpTypeFloat 32",
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"%double = OpTypeFloat 64",
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// vector types
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"%v2bool = OpTypeVector %bool 2",
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"%v2uint = OpTypeVector %uint 2",
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"%v2int = OpTypeVector %int 2",
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"%v3int = OpTypeVector %int 3",
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"%v4int = OpTypeVector %int 4",
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"%v2float = OpTypeVector %float 2",
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"%v3float = OpTypeVector %float 3",
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"%v2double = OpTypeVector %double 2",
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// variable pointer types
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"%_pf_bool = OpTypePointer Function %bool",
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"%_pf_uint = OpTypePointer Function %uint",
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"%_pf_int = OpTypePointer Function %int",
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"%_pf_float = OpTypePointer Function %float",
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"%_pf_double = OpTypePointer Function %double",
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"%_pf_v2int = OpTypePointer Function %v2int",
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"%_pf_v3int = OpTypePointer Function %v3int",
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"%_pf_v2float = OpTypePointer Function %v2float",
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"%_pf_v3float = OpTypePointer Function %v3float",
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"%_pf_v2double = OpTypePointer Function %v2double",
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// struct types
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"%inner_struct = OpTypeStruct %bool %int %float %double",
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"%outer_struct = OpTypeStruct %inner_struct %int %double",
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"%flat_struct = OpTypeStruct %bool %int %float %double",
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// clang-format on
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};
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using EliminateDeadConstantTest =
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PassTest<::testing::TestWithParam<EliminateDeadConstantTestCase>>;
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TEST_P(EliminateDeadConstantTest, Custom) {
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auto& tc = GetParam();
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AssemblyBuilder builder;
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builder.AppendTypesConstantsGlobals(CommonTypes)
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.AppendTypesConstantsGlobals(tc.used_consts)
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.AppendInMain(tc.main_insts);
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const std::string expected = builder.GetCode();
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builder.AppendTypesConstantsGlobals(tc.dead_consts);
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const std::string assembly_with_dead_const = builder.GetCode();
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SinglePassRunAndCheck<opt::EliminateDeadConstantPass>(
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assembly_with_dead_const, expected, /* skip_nop = */ true);
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}
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INSTANTIATE_TEST_CASE_P(
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ScalarTypeConstants, EliminateDeadConstantTest,
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::testing::ValuesIn(std::vector<EliminateDeadConstantTestCase>({
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// clang-format off
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// Scalar type constants, one dead constant and one used constant.
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{
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/* .used_consts = */
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{
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"%used_const_int = OpConstant %int 1",
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},
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/* .main_insts = */
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{
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"%int_var = OpVariable %_pf_int Function",
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"OpStore %int_var %used_const_int",
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},
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/* .dead_consts = */
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{
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"%dead_const_int = OpConstant %int 1",
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},
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},
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{
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/* .used_consts = */
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{
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"%used_const_uint = OpConstant %uint 1",
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},
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/* .main_insts = */
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{
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"%uint_var = OpVariable %_pf_uint Function",
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"OpStore %uint_var %used_const_uint",
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},
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/* .dead_consts = */
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{
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"%dead_const_uint = OpConstant %uint 1",
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},
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},
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{
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/* .used_consts = */
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{
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"%used_const_float = OpConstant %float 3.14",
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},
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/* .main_insts = */
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{
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"%float_var = OpVariable %_pf_float Function",
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"OpStore %float_var %used_const_float",
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},
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/* .dead_consts = */
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{
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"%dead_const_float = OpConstant %float 3.14",
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},
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},
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{
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/* .used_consts = */
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{
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"%used_const_double = OpConstant %double 3.14",
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},
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/* .main_insts = */
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{
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"%double_var = OpVariable %_pf_double Function",
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"OpStore %double_var %used_const_double",
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},
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/* .dead_consts = */
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{
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"%dead_const_double = OpConstant %double 3.14",
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},
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},
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// clang-format on
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})));
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INSTANTIATE_TEST_CASE_P(
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VectorTypeConstants, EliminateDeadConstantTest,
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::testing::ValuesIn(std::vector<EliminateDeadConstantTestCase>({
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// clang-format off
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// Tests eliminating dead constant type ivec2. One dead constant vector
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// and one used constant vector, each built from its own group of
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// scalar constants.
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{
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/* .used_consts = */
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{
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"%used_int_x = OpConstant %int 1",
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"%used_int_y = OpConstant %int 2",
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"%used_v2int = OpConstantComposite %v2int %used_int_x %used_int_y",
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},
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/* .main_insts = */
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{
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"%v2int_var = OpVariable %_pf_v2int Function",
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"OpStore %v2int_var %used_v2int",
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},
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/* .dead_consts = */
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{
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"%dead_int_x = OpConstant %int 1",
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"%dead_int_y = OpConstant %int 2",
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"%dead_v2int = OpConstantComposite %v2int %dead_int_x %dead_int_y",
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},
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},
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// Tests eliminating dead constant ivec2. One dead constant vector and
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// one used constant vector. But both built from a same group of
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// scalar constants.
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{
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/* .used_consts = */
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{
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"%used_int_x = OpConstant %int 1",
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"%used_int_y = OpConstant %int 2",
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"%used_int_z = OpConstant %int 3",
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"%used_v3int = OpConstantComposite %v3int %used_int_x %used_int_y %used_int_z",
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},
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/* .main_insts = */
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{
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"%v3int_var = OpVariable %_pf_v3int Function",
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"OpStore %v3int_var %used_v3int",
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},
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/* .dead_consts = */
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{
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"%dead_v3int = OpConstantComposite %v3int %used_int_x %used_int_y %used_int_z",
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},
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},
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// Tests eliminating dead cosntant vec2. One dead constant vector and
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// one used constant vector. Each built from its own group of scalar
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// constants.
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{
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/* .used_consts = */
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{
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"%used_float_x = OpConstant %float 3.14",
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"%used_float_y = OpConstant %float 4.13",
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"%used_v2float = OpConstantComposite %v2float %used_float_x %used_float_y",
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},
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/* .main_insts = */
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{
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"%v2float_var = OpVariable %_pf_v2float Function",
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"OpStore %v2float_var %used_v2float",
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},
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/* .dead_consts = */
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{
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"%dead_float_x = OpConstant %float 3.14",
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"%dead_float_y = OpConstant %float 4.13",
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"%dead_v2float = OpConstantComposite %v2float %dead_float_x %dead_float_y",
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},
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},
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// Tests eliminating dead cosntant vec2. One dead constant vector and
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// one used constant vector. Both built from a same group of scalar
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// constants.
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{
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/* .used_consts = */
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{
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"%used_float_x = OpConstant %float 3.14",
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"%used_float_y = OpConstant %float 4.13",
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"%used_float_z = OpConstant %float 4.31",
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"%used_v3float = OpConstantComposite %v3float %used_float_x %used_float_y %used_float_z",
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},
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/* .main_insts = */
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{
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"%v3float_var = OpVariable %_pf_v3float Function",
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"OpStore %v3float_var %used_v3float",
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},
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/* .dead_consts = */
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{
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"%dead_v3float = OpConstantComposite %v3float %used_float_x %used_float_y %used_float_z",
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},
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},
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// clang-format on
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})));
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INSTANTIATE_TEST_CASE_P(
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StructTypeConstants, EliminateDeadConstantTest,
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::testing::ValuesIn(std::vector<EliminateDeadConstantTestCase>({
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// clang-format off
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// A plain struct type dead constants. All of its components are dead
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// constants too.
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{
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/* .used_consts = */ {},
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/* .main_insts = */ {},
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/* .dead_consts = */
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{
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"%dead_bool = OpConstantTrue %bool",
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"%dead_int = OpConstant %int 1",
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"%dead_float = OpConstant %float 2.5",
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"%dead_double = OpConstant %double 3.14159265358979",
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"%dead_struct = OpConstantComposite %flat_struct %dead_bool %dead_int %dead_float %dead_double",
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},
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},
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// A plain struct type dead constants. Some of its components are dead
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// constants while others are not.
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{
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/* .used_consts = */
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{
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"%used_int = OpConstant %int 1",
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"%used_double = OpConstant %double 3.14159265358979",
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},
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/* .main_insts = */
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{
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"%int_var = OpVariable %_pf_int Function",
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"OpStore %int_var %used_int",
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"%double_var = OpVariable %_pf_double Function",
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"OpStore %double_var %used_double",
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},
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/* .dead_consts = */
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{
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"%dead_bool = OpConstantTrue %bool",
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"%dead_float = OpConstant %float 2.5",
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"%dead_struct = OpConstantComposite %flat_struct %dead_bool %used_int %dead_float %used_double",
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},
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},
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// A nesting struct type dead constants. All components of both outer
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// and inner structs are dead and should be removed after dead constant
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// elimination.
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{
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/* .used_consts = */ {},
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/* .main_insts = */ {},
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/* .dead_consts = */
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{
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"%dead_bool = OpConstantTrue %bool",
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"%dead_int = OpConstant %int 1",
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"%dead_float = OpConstant %float 2.5",
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"%dead_double = OpConstant %double 3.1415926535",
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"%dead_inner_struct = OpConstantComposite %inner_struct %dead_bool %dead_int %dead_float %dead_double",
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"%dead_int2 = OpConstant %int 2",
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"%dead_double2 = OpConstant %double 1.428571428514",
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"%dead_outer_struct = OpConstantComposite %outer_struct %dead_inner_struct %dead_int2 %dead_double2",
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},
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},
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// A nesting struct type dead constants. Some of its components are
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// dead constants while others are not.
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{
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/* .used_consts = */
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{
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"%used_int = OpConstant %int 1",
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"%used_double = OpConstant %double 3.14159265358979",
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},
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/* .main_insts = */
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{
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"%int_var = OpVariable %_pf_int Function",
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"OpStore %int_var %used_int",
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"%double_var = OpVariable %_pf_double Function",
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"OpStore %double_var %used_double",
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},
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/* .dead_consts = */
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{
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"%dead_bool = OpConstantTrue %bool",
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"%dead_float = OpConstant %float 2.5",
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"%dead_inner_struct = OpConstantComposite %inner_struct %dead_bool %used_int %dead_float %used_double",
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"%dead_int = OpConstant %int 2",
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"%dead_outer_struct = OpConstantComposite %outer_struct %dead_inner_struct %dead_int %used_double",
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},
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},
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// A nesting struct case. The inner struct is used while the outer struct is not
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{
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/* .used_const = */
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{
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"%used_bool = OpConstantTrue %bool",
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"%used_int = OpConstant %int 1",
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"%used_float = OpConstant %float 1.23",
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"%used_double = OpConstant %double 1.2345678901234",
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"%used_inner_struct = OpConstantComposite %inner_struct %used_bool %used_int %used_float %used_double",
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},
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/* .main_insts = */
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{
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"%bool_var = OpVariable %_pf_bool Function",
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"%bool_from_inner_struct = OpCompositeExtract %bool %used_inner_struct 0",
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"OpStore %bool_var %bool_from_inner_struct",
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},
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/* .dead_consts = */
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{
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"%dead_int = OpConstant %int 2",
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"%dead_outer_struct = OpConstantComposite %outer_struct %used_inner_struct %dead_int %used_double"
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},
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},
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// A nesting struct case. The outer struct is used, so the inner struct should not
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// be removed even though it is not used anywhere.
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{
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/* .used_const = */
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{
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"%used_bool = OpConstantTrue %bool",
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"%used_int = OpConstant %int 1",
|
|
"%used_float = OpConstant %float 1.23",
|
|
"%used_double = OpConstant %double 1.2345678901234",
|
|
"%used_inner_struct = OpConstantComposite %inner_struct %used_bool %used_int %used_float %used_double",
|
|
"%used_outer_struct = OpConstantComposite %outer_struct %used_inner_struct %used_int %used_double"
|
|
},
|
|
/* .main_insts = */
|
|
{
|
|
"%int_var = OpVariable %_pf_int Function",
|
|
"%int_from_outer_struct = OpCompositeExtract %int %used_outer_struct 1",
|
|
"OpStore %int_var %int_from_outer_struct",
|
|
},
|
|
/* .dead_consts = */ {},
|
|
},
|
|
// clang-format on
|
|
})));
|
|
|
|
INSTANTIATE_TEST_CASE_P(
|
|
ScalarTypeSpecConstants, EliminateDeadConstantTest,
|
|
::testing::ValuesIn(std::vector<EliminateDeadConstantTestCase>({
|
|
// clang-format off
|
|
// All scalar type spec constants.
|
|
{
|
|
/* .used_consts = */
|
|
{
|
|
"%used_bool = OpSpecConstantTrue %bool",
|
|
"%used_uint = OpSpecConstant %uint 2",
|
|
"%used_int = OpSpecConstant %int 2",
|
|
"%used_float = OpSpecConstant %float 2.5",
|
|
"%used_double = OpSpecConstant %double 1.428571428514",
|
|
},
|
|
/* .main_insts = */
|
|
{
|
|
"%bool_var = OpVariable %_pf_bool Function",
|
|
"%uint_var = OpVariable %_pf_uint Function",
|
|
"%int_var = OpVariable %_pf_int Function",
|
|
"%float_var = OpVariable %_pf_float Function",
|
|
"%double_var = OpVariable %_pf_double Function",
|
|
"OpStore %bool_var %used_bool", "OpStore %uint_var %used_uint",
|
|
"OpStore %int_var %used_int", "OpStore %float_var %used_float",
|
|
"OpStore %double_var %used_double",
|
|
},
|
|
/* .dead_consts = */
|
|
{
|
|
"%dead_bool = OpSpecConstantTrue %bool",
|
|
"%dead_uint = OpSpecConstant %uint 2",
|
|
"%dead_int = OpSpecConstant %int 2",
|
|
"%dead_float = OpSpecConstant %float 2.5",
|
|
"%dead_double = OpSpecConstant %double 1.428571428514",
|
|
},
|
|
},
|
|
// clang-format on
|
|
})));
|
|
|
|
INSTANTIATE_TEST_CASE_P(
|
|
VectorTypeSpecConstants, EliminateDeadConstantTest,
|
|
::testing::ValuesIn(std::vector<EliminateDeadConstantTestCase>({
|
|
// clang-format off
|
|
// Bool vector type spec constants. One vector has all component dead,
|
|
// another vector has one dead boolean and one used boolean.
|
|
{
|
|
/* .used_consts = */
|
|
{
|
|
"%used_bool = OpSpecConstantTrue %bool",
|
|
},
|
|
/* .main_insts = */
|
|
{
|
|
"%bool_var = OpVariable %_pf_bool Function",
|
|
"OpStore %bool_var %used_bool",
|
|
},
|
|
/* .dead_consts = */
|
|
{
|
|
"%dead_bool = OpSpecConstantFalse %bool",
|
|
"%dead_bool_vec1 = OpSpecConstantComposite %v2bool %dead_bool %dead_bool",
|
|
"%dead_bool_vec2 = OpSpecConstantComposite %v2bool %dead_bool %used_bool",
|
|
},
|
|
},
|
|
|
|
// Uint vector type spec constants. One vector has all component dead,
|
|
// another vector has one dead unsigend integer and one used unsigned
|
|
// integer.
|
|
{
|
|
/* .used_consts = */
|
|
{
|
|
"%used_uint = OpSpecConstant %uint 3",
|
|
},
|
|
/* .main_insts = */
|
|
{
|
|
"%uint_var = OpVariable %_pf_uint Function",
|
|
"OpStore %uint_var %used_uint",
|
|
},
|
|
/* .dead_consts = */
|
|
{
|
|
"%dead_uint = OpSpecConstant %uint 1",
|
|
"%dead_uint_vec1 = OpSpecConstantComposite %v2uint %dead_uint %dead_uint",
|
|
"%dead_uint_vec2 = OpSpecConstantComposite %v2uint %dead_uint %used_uint",
|
|
},
|
|
},
|
|
|
|
// Int vector type spec constants. One vector has all component dead,
|
|
// another vector has one dead integer and one used integer.
|
|
{
|
|
/* .used_consts = */
|
|
{
|
|
"%used_int = OpSpecConstant %int 3",
|
|
},
|
|
/* .main_insts = */
|
|
{
|
|
"%int_var = OpVariable %_pf_int Function",
|
|
"OpStore %int_var %used_int",
|
|
},
|
|
/* .dead_consts = */
|
|
{
|
|
"%dead_int = OpSpecConstant %int 1",
|
|
"%dead_int_vec1 = OpSpecConstantComposite %v2int %dead_int %dead_int",
|
|
"%dead_int_vec2 = OpSpecConstantComposite %v2int %dead_int %used_int",
|
|
},
|
|
},
|
|
|
|
// Int vector type spec constants built with both spec constants and
|
|
// front-end constants.
|
|
{
|
|
/* .used_consts = */
|
|
{
|
|
"%used_spec_int = OpSpecConstant %int 3",
|
|
"%used_front_end_int = OpConstant %int 3",
|
|
},
|
|
/* .main_insts = */
|
|
{
|
|
"%int_var1 = OpVariable %_pf_int Function",
|
|
"OpStore %int_var1 %used_spec_int",
|
|
"%int_var2 = OpVariable %_pf_int Function",
|
|
"OpStore %int_var2 %used_front_end_int",
|
|
},
|
|
/* .dead_consts = */
|
|
{
|
|
"%dead_spec_int = OpSpecConstant %int 1",
|
|
"%dead_front_end_int = OpConstant %int 1",
|
|
// Dead front-end and dead spec constants
|
|
"%dead_int_vec1 = OpSpecConstantComposite %v2int %dead_spec_int %dead_front_end_int",
|
|
// Used front-end and dead spec constants
|
|
"%dead_int_vec2 = OpSpecConstantComposite %v2int %dead_spec_int %used_front_end_int",
|
|
// Dead front-end and used spec constants
|
|
"%dead_int_vec3 = OpSpecConstantComposite %v2int %dead_front_end_int %used_spec_int",
|
|
},
|
|
},
|
|
// clang-format on
|
|
})));
|
|
|
|
INSTANTIATE_TEST_CASE_P(
|
|
SpecConstantOp, EliminateDeadConstantTest,
|
|
::testing::ValuesIn(std::vector<EliminateDeadConstantTestCase>({
|
|
// clang-format off
|
|
// Cast operations: uint <-> int <-> bool
|
|
{
|
|
/* .used_consts = */ {},
|
|
/* .main_insts = */ {},
|
|
/* .dead_consts = */
|
|
{
|
|
// Assistant constants, only used in dead spec constant
|
|
// operations.
|
|
"%signed_zero = OpConstant %int 0",
|
|
"%signed_zero_vec = OpConstantComposite %v2int %signed_zero %signed_zero",
|
|
"%unsigned_zero = OpConstant %uint 0",
|
|
"%unsigned_zero_vec = OpConstantComposite %v2uint %unsigned_zero %unsigned_zero",
|
|
"%signed_one = OpConstant %int 1",
|
|
"%signed_one_vec = OpConstantComposite %v2int %signed_one %signed_one",
|
|
"%unsigned_one = OpConstant %uint 1",
|
|
"%unsigned_one_vec = OpConstantComposite %v2uint %unsigned_one %unsigned_one",
|
|
|
|
// Spec constants that support casting to each other.
|
|
"%dead_bool = OpSpecConstantTrue %bool",
|
|
"%dead_uint = OpSpecConstant %uint 1",
|
|
"%dead_int = OpSpecConstant %int 2",
|
|
"%dead_bool_vec = OpSpecConstantComposite %v2bool %dead_bool %dead_bool",
|
|
"%dead_uint_vec = OpSpecConstantComposite %v2uint %dead_uint %dead_uint",
|
|
"%dead_int_vec = OpSpecConstantComposite %v2int %dead_int %dead_int",
|
|
|
|
// Scalar cast to boolean spec constant.
|
|
"%int_to_bool = OpSpecConstantOp %bool INotEqual %dead_int %signed_zero",
|
|
"%uint_to_bool = OpSpecConstantOp %bool INotEqual %dead_uint %unsigned_zero",
|
|
|
|
// Vector cast to boolean spec constant.
|
|
"%int_to_bool_vec = OpSpecConstantOp %v2bool INotEqual %dead_int_vec %signed_zero_vec",
|
|
"%uint_to_bool_vec = OpSpecConstantOp %v2bool INotEqual %dead_uint_vec %unsigned_zero_vec",
|
|
|
|
// Scalar cast to int spec constant.
|
|
"%bool_to_int = OpSpecConstantOp %int Select %dead_bool %signed_one %signed_zero",
|
|
"%uint_to_int = OpSpecConstantOp %uint IAdd %dead_uint %unsigned_zero",
|
|
|
|
// Vector cast to int spec constant.
|
|
"%bool_to_int_vec = OpSpecConstantOp %v2int Select %dead_bool_vec %signed_one_vec %signed_zero_vec",
|
|
"%uint_to_int_vec = OpSpecConstantOp %v2uint IAdd %dead_uint_vec %unsigned_zero_vec",
|
|
|
|
// Scalar cast to uint spec constant.
|
|
"%bool_to_uint = OpSpecConstantOp %uint Select %dead_bool %unsigned_one %unsigned_zero",
|
|
"%int_to_uint_vec = OpSpecConstantOp %uint IAdd %dead_int %signed_zero",
|
|
|
|
// Vector cast to uint spec constant.
|
|
"%bool_to_uint_vec = OpSpecConstantOp %v2uint Select %dead_bool_vec %unsigned_one_vec %unsigned_zero_vec",
|
|
"%int_to_uint = OpSpecConstantOp %v2uint IAdd %dead_int_vec %signed_zero_vec",
|
|
},
|
|
},
|
|
|
|
// Add, sub, mul, div, rem.
|
|
{
|
|
/* .used_consts = */ {},
|
|
/* .main_insts = */ {},
|
|
/* .dead_consts = */
|
|
{
|
|
"%dead_spec_int_a = OpSpecConstant %int 1",
|
|
"%dead_spec_int_a_vec = OpSpecConstantComposite %v2int %dead_spec_int_a %dead_spec_int_a",
|
|
|
|
"%dead_spec_int_b = OpSpecConstant %int 2",
|
|
"%dead_spec_int_b_vec = OpSpecConstantComposite %v2int %dead_spec_int_b %dead_spec_int_b",
|
|
|
|
"%dead_const_int_c = OpConstant %int 3",
|
|
"%dead_const_int_c_vec = OpConstantComposite %v2int %dead_const_int_c %dead_const_int_c",
|
|
|
|
// Add
|
|
"%add_a_b = OpSpecConstantOp %int IAdd %dead_spec_int_a %dead_spec_int_b",
|
|
"%add_a_b_vec = OpSpecConstantOp %v2int IAdd %dead_spec_int_a_vec %dead_spec_int_b_vec",
|
|
|
|
// Sub
|
|
"%sub_a_b = OpSpecConstantOp %int ISub %dead_spec_int_a %dead_spec_int_b",
|
|
"%sub_a_b_vec = OpSpecConstantOp %v2int ISub %dead_spec_int_a_vec %dead_spec_int_b_vec",
|
|
|
|
// Mul
|
|
"%mul_a_b = OpSpecConstantOp %int IMul %dead_spec_int_a %dead_spec_int_b",
|
|
"%mul_a_b_vec = OpSpecConstantOp %v2int IMul %dead_spec_int_a_vec %dead_spec_int_b_vec",
|
|
|
|
// Div
|
|
"%div_a_b = OpSpecConstantOp %int SDiv %dead_spec_int_a %dead_spec_int_b",
|
|
"%div_a_b_vec = OpSpecConstantOp %v2int SDiv %dead_spec_int_a_vec %dead_spec_int_b_vec",
|
|
|
|
// Bitwise Xor
|
|
"%xor_a_b = OpSpecConstantOp %int BitwiseXor %dead_spec_int_a %dead_spec_int_b",
|
|
"%xor_a_b_vec = OpSpecConstantOp %v2int BitwiseXor %dead_spec_int_a_vec %dead_spec_int_b_vec",
|
|
|
|
// Scalar Comparison
|
|
"%less_a_b = OpSpecConstantOp %bool SLessThan %dead_spec_int_a %dead_spec_int_b",
|
|
},
|
|
},
|
|
|
|
// Vectors without used swizzles should be removed.
|
|
{
|
|
/* .used_consts = */
|
|
{
|
|
"%used_int = OpConstant %int 3",
|
|
},
|
|
/* .main_insts = */
|
|
{
|
|
"%int_var = OpVariable %_pf_int Function",
|
|
"OpStore %int_var %used_int",
|
|
},
|
|
/* .dead_consts = */
|
|
{
|
|
"%dead_int = OpConstant %int 3",
|
|
|
|
"%dead_spec_int_a = OpSpecConstant %int 1",
|
|
"%vec_a = OpSpecConstantComposite %v4int %dead_spec_int_a %dead_spec_int_a %dead_int %dead_int",
|
|
|
|
"%dead_spec_int_b = OpSpecConstant %int 2",
|
|
"%vec_b = OpSpecConstantComposite %v4int %dead_spec_int_b %dead_spec_int_b %used_int %used_int",
|
|
|
|
// Extract scalar
|
|
"%a_x = OpSpecConstantOp %int CompositeExtract %vec_a 0",
|
|
"%b_x = OpSpecConstantOp %int CompositeExtract %vec_b 0",
|
|
|
|
// Extract vector
|
|
"%a_xy = OpSpecConstantOp %v2int VectorShuffle %vec_a %vec_a 0 1",
|
|
"%b_xy = OpSpecConstantOp %v2int VectorShuffle %vec_b %vec_b 0 1",
|
|
},
|
|
},
|
|
// Vectors with used swizzles should not be removed.
|
|
{
|
|
/* .used_consts = */
|
|
{
|
|
"%used_int = OpConstant %int 3",
|
|
"%used_spec_int_a = OpSpecConstant %int 1",
|
|
"%used_spec_int_b = OpSpecConstant %int 2",
|
|
// Create vectors
|
|
"%vec_a = OpSpecConstantComposite %v4int %used_spec_int_a %used_spec_int_a %used_int %used_int",
|
|
"%vec_b = OpSpecConstantComposite %v4int %used_spec_int_b %used_spec_int_b %used_int %used_int",
|
|
// Extract vector
|
|
"%a_xy = OpSpecConstantOp %v2int VectorShuffle %vec_a %vec_a 0 1",
|
|
"%b_xy = OpSpecConstantOp %v2int VectorShuffle %vec_b %vec_b 0 1",
|
|
},
|
|
/* .main_insts = */
|
|
{
|
|
"%v2int_var_a = OpVariable %_pf_v2int Function",
|
|
"%v2int_var_b = OpVariable %_pf_v2int Function",
|
|
"OpStore %v2int_var_a %a_xy",
|
|
"OpStore %v2int_var_b %b_xy",
|
|
},
|
|
/* .dead_consts = */ {},
|
|
},
|
|
// clang-format on
|
|
})));
|
|
|
|
INSTANTIATE_TEST_CASE_P(
|
|
LongDefUseChain, EliminateDeadConstantTest,
|
|
::testing::ValuesIn(std::vector<EliminateDeadConstantTestCase>({
|
|
// clang-format off
|
|
// Long Def-Use chain with binary operations.
|
|
{
|
|
/* .used_consts = */
|
|
{
|
|
"%array_size = OpConstant %int 4",
|
|
"%type_arr_int_4 = OpTypeArray %int %array_size",
|
|
"%used_int_0 = OpConstant %int 100",
|
|
"%used_int_1 = OpConstant %int 1",
|
|
"%used_int_2 = OpSpecConstantOp %int IAdd %used_int_0 %used_int_1",
|
|
"%used_int_3 = OpSpecConstantOp %int ISub %used_int_0 %used_int_2",
|
|
"%used_int_4 = OpSpecConstantOp %int IAdd %used_int_0 %used_int_3",
|
|
"%used_int_5 = OpSpecConstantOp %int ISub %used_int_0 %used_int_4",
|
|
"%used_int_6 = OpSpecConstantOp %int IAdd %used_int_0 %used_int_5",
|
|
"%used_int_7 = OpSpecConstantOp %int ISub %used_int_0 %used_int_6",
|
|
"%used_int_8 = OpSpecConstantOp %int IAdd %used_int_0 %used_int_7",
|
|
"%used_int_9 = OpSpecConstantOp %int ISub %used_int_0 %used_int_8",
|
|
"%used_int_10 = OpSpecConstantOp %int IAdd %used_int_0 %used_int_9",
|
|
"%used_int_11 = OpSpecConstantOp %int ISub %used_int_0 %used_int_10",
|
|
"%used_int_12 = OpSpecConstantOp %int IAdd %used_int_0 %used_int_11",
|
|
"%used_int_13 = OpSpecConstantOp %int ISub %used_int_0 %used_int_12",
|
|
"%used_int_14 = OpSpecConstantOp %int IAdd %used_int_0 %used_int_13",
|
|
"%used_int_15 = OpSpecConstantOp %int ISub %used_int_0 %used_int_14",
|
|
"%used_int_16 = OpSpecConstantOp %int ISub %used_int_0 %used_int_15",
|
|
"%used_int_17 = OpSpecConstantOp %int IAdd %used_int_0 %used_int_16",
|
|
"%used_int_18 = OpSpecConstantOp %int ISub %used_int_0 %used_int_17",
|
|
"%used_int_19 = OpSpecConstantOp %int IAdd %used_int_0 %used_int_18",
|
|
"%used_int_20 = OpSpecConstantOp %int ISub %used_int_0 %used_int_19",
|
|
"%used_vec_a = OpSpecConstantComposite %v2int %used_int_18 %used_int_19",
|
|
"%used_vec_b = OpSpecConstantOp %v2int IMul %used_vec_a %used_vec_a",
|
|
"%used_int_21 = OpSpecConstantOp %int CompositeExtract %used_vec_b 0",
|
|
"%used_array = OpConstantComposite %type_arr_int_4 %used_int_20 %used_int_20 %used_int_21 %used_int_21",
|
|
},
|
|
/* .main_insts = */
|
|
{
|
|
"%int_var = OpVariable %_pf_int Function",
|
|
"%used_array_2 = OpCompositeExtract %int %used_array 2",
|
|
"OpStore %int_var %used_array_2",
|
|
},
|
|
/* .dead_consts = */
|
|
{
|
|
"%dead_int_1 = OpConstant %int 2",
|
|
"%dead_int_2 = OpSpecConstantOp %int IAdd %used_int_0 %dead_int_1",
|
|
"%dead_int_3 = OpSpecConstantOp %int ISub %used_int_0 %dead_int_2",
|
|
"%dead_int_4 = OpSpecConstantOp %int IAdd %used_int_0 %dead_int_3",
|
|
"%dead_int_5 = OpSpecConstantOp %int ISub %used_int_0 %dead_int_4",
|
|
"%dead_int_6 = OpSpecConstantOp %int IAdd %used_int_0 %dead_int_5",
|
|
"%dead_int_7 = OpSpecConstantOp %int ISub %used_int_0 %dead_int_6",
|
|
"%dead_int_8 = OpSpecConstantOp %int IAdd %used_int_0 %dead_int_7",
|
|
"%dead_int_9 = OpSpecConstantOp %int ISub %used_int_0 %dead_int_8",
|
|
"%dead_int_10 = OpSpecConstantOp %int IAdd %used_int_0 %dead_int_9",
|
|
"%dead_int_11 = OpSpecConstantOp %int ISub %used_int_0 %dead_int_10",
|
|
"%dead_int_12 = OpSpecConstantOp %int IAdd %used_int_0 %dead_int_11",
|
|
"%dead_int_13 = OpSpecConstantOp %int ISub %used_int_0 %dead_int_12",
|
|
"%dead_int_14 = OpSpecConstantOp %int IAdd %used_int_0 %dead_int_13",
|
|
"%dead_int_15 = OpSpecConstantOp %int ISub %used_int_0 %dead_int_14",
|
|
"%dead_int_16 = OpSpecConstantOp %int ISub %used_int_0 %dead_int_15",
|
|
"%dead_int_17 = OpSpecConstantOp %int IAdd %used_int_0 %dead_int_16",
|
|
"%dead_int_18 = OpSpecConstantOp %int ISub %used_int_0 %dead_int_17",
|
|
"%dead_int_19 = OpSpecConstantOp %int IAdd %used_int_0 %dead_int_18",
|
|
"%dead_int_20 = OpSpecConstantOp %int ISub %used_int_0 %dead_int_19",
|
|
"%dead_vec_a = OpSpecConstantComposite %v2int %dead_int_18 %dead_int_19",
|
|
"%dead_vec_b = OpSpecConstantOp %v2int IMul %dead_vec_a %dead_vec_a",
|
|
"%dead_int_21 = OpSpecConstantOp %int CompositeExtract %dead_vec_b 0",
|
|
"%dead_array = OpConstantComposite %type_arr_int_4 %dead_int_20 %used_int_20 %dead_int_19 %used_int_19",
|
|
},
|
|
},
|
|
// Long Def-Use chain with swizzle
|
|
// clang-format on
|
|
})));
|
|
} // anonymous namespace
|