mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-10-19 19:40:13 +00:00
525bc38062
This pass eliminates components of output variables that are not stored to. Currently this just eliminates trailing components of arrays and structs, all of which are dead. WARNING: This pass is not designed to be a standalone pass as it can cause interface incompatibiliies with the following shader in the pipeline. See the comment in optimizer.hpp for best usage. This pass is currently available only through the API; it is not available in the CLI. This commit also fixes a bug in CreateDecoration() which is part of the system of generating SPIR-V from the Type manager.
618 lines
22 KiB
C++
618 lines
22 KiB
C++
// Copyright (c) 2022 The Khronos Group Inc.
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// Copyright (c) 2022 LunarG 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 <vector>
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#include "gmock/gmock.h"
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#include "test/opt/pass_fixture.h"
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#include "test/opt/pass_utils.h"
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namespace spvtools {
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namespace opt {
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namespace {
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using ElimDeadInputComponentsTest = PassTest<::testing::Test>;
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TEST_F(ElimDeadInputComponentsTest, ElimOneConstantIndex) {
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// Should reduce to uv[2]
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//
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// #version 450
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//
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// layout(location = 0) in vec4 uv[8];
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//
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// out gl_PerVertex {
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// vec4 gl_Position;
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// };
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//
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// void main()
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// {
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// gl_Position = uv[1];
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// }
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const std::string text = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Vertex %main "main" %_ %uv
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OpSource GLSL 450
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OpName %main "main"
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OpName %gl_PerVertex "gl_PerVertex"
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OpMemberName %gl_PerVertex 0 "gl_Position"
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OpName %_ ""
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OpName %uv "uv"
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OpMemberDecorate %gl_PerVertex 0 BuiltIn Position
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OpDecorate %gl_PerVertex Block
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OpDecorate %uv Location 0
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%void = OpTypeVoid
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%3 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%gl_PerVertex = OpTypeStruct %v4float
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%_ptr_Output_gl_PerVertex = OpTypePointer Output %gl_PerVertex
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%_ = OpVariable %_ptr_Output_gl_PerVertex Output
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%int = OpTypeInt 32 1
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%int_0 = OpConstant %int 0
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%uint = OpTypeInt 32 0
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%uint_8 = OpConstant %uint 8
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%_arr_v4float_uint_8 = OpTypeArray %v4float %uint_8
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%_ptr_Input__arr_v4float_uint_8 = OpTypePointer Input %_arr_v4float_uint_8
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%uv = OpVariable %_ptr_Input__arr_v4float_uint_8 Input
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%int_1 = OpConstant %int 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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;CHECK-NOT: %uv = OpVariable %_ptr_Input__arr_v4float_uint_8 Input
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;CHECK: %uv = OpVariable %_ptr_Input__arr_v4float_uint_2 Input
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%main = OpFunction %void None %3
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%5 = OpLabel
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%20 = OpAccessChain %_ptr_Input_v4float %uv %int_1
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%21 = OpLoad %v4float %20
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%23 = OpAccessChain %_ptr_Output_v4float %_ %int_0
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OpStore %23 %21
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OpReturn
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OpFunctionEnd
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)";
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SetTargetEnv(SPV_ENV_VULKAN_1_3);
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SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
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SinglePassRunAndMatch<EliminateDeadInputComponentsPass>(text, true);
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}
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TEST_F(ElimDeadInputComponentsTest, ElimOneConstantIndexInBounds) {
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// Same as ElimOneConstantIndex but with OpInBoundsAccessChain
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const std::string text = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Vertex %main "main" %_ %uv
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OpSource GLSL 450
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OpName %main "main"
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OpName %gl_PerVertex "gl_PerVertex"
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OpMemberName %gl_PerVertex 0 "gl_Position"
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OpName %_ ""
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OpName %uv "uv"
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OpMemberDecorate %gl_PerVertex 0 BuiltIn Position
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OpDecorate %gl_PerVertex Block
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OpDecorate %uv Location 0
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%void = OpTypeVoid
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%3 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%gl_PerVertex = OpTypeStruct %v4float
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%_ptr_Output_gl_PerVertex = OpTypePointer Output %gl_PerVertex
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%_ = OpVariable %_ptr_Output_gl_PerVertex Output
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%int = OpTypeInt 32 1
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%int_0 = OpConstant %int 0
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%uint = OpTypeInt 32 0
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%uint_8 = OpConstant %uint 8
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%_arr_v4float_uint_8 = OpTypeArray %v4float %uint_8
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%_ptr_Input__arr_v4float_uint_8 = OpTypePointer Input %_arr_v4float_uint_8
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%uv = OpVariable %_ptr_Input__arr_v4float_uint_8 Input
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%int_1 = OpConstant %int 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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;CHECK-NOT: %uv = OpVariable %_ptr_Input__arr_v4float_uint_8 Input
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;CHECK: %uv = OpVariable %_ptr_Input__arr_v4float_uint_2 Input
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%main = OpFunction %void None %3
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%5 = OpLabel
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%20 = OpInBoundsAccessChain %_ptr_Input_v4float %uv %int_1
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%21 = OpLoad %v4float %20
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%23 = OpAccessChain %_ptr_Output_v4float %_ %int_0
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OpStore %23 %21
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OpReturn
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OpFunctionEnd
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)";
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SetTargetEnv(SPV_ENV_VULKAN_1_3);
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SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
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SinglePassRunAndMatch<EliminateDeadInputComponentsPass>(text, true);
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}
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TEST_F(ElimDeadInputComponentsTest, ElimTwoConstantIndices) {
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// Should reduce to uv[4]
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//
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// #version 450
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//
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// layout(location = 0) in vec4 uv[8];
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//
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// out gl_PerVertex {
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// vec4 gl_Position;
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// };
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//
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// void main()
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// {
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// gl_Position = uv[1] + uv[3];
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// }
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const std::string text = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Vertex %main "main" %_ %uv
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OpSource GLSL 450
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OpName %main "main"
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OpName %gl_PerVertex "gl_PerVertex"
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OpMemberName %gl_PerVertex 0 "gl_Position"
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OpName %_ ""
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OpName %uv "uv"
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OpMemberDecorate %gl_PerVertex 0 BuiltIn Position
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OpDecorate %gl_PerVertex Block
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OpDecorate %uv Location 0
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%void = OpTypeVoid
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%3 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%gl_PerVertex = OpTypeStruct %v4float
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%_ptr_Output_gl_PerVertex = OpTypePointer Output %gl_PerVertex
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%_ = OpVariable %_ptr_Output_gl_PerVertex Output
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%int = OpTypeInt 32 1
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%int_0 = OpConstant %int 0
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%uint = OpTypeInt 32 0
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%uint_8 = OpConstant %uint 8
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%_arr_v4float_uint_8 = OpTypeArray %v4float %uint_8
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%_ptr_Input__arr_v4float_uint_8 = OpTypePointer Input %_arr_v4float_uint_8
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%uv = OpVariable %_ptr_Input__arr_v4float_uint_8 Input
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%int_1 = OpConstant %int 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%int_3 = OpConstant %int 3
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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;CHECK-NOT: %uv = OpVariable %_ptr_Input__arr_v4float_uint_8 Input
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;CHECK: %uv = OpVariable %_ptr_Input__arr_v4float_uint_4 Input
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%main = OpFunction %void None %3
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%5 = OpLabel
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%20 = OpAccessChain %_ptr_Input_v4float %uv %int_1
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%21 = OpLoad %v4float %20
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%23 = OpAccessChain %_ptr_Input_v4float %uv %int_3
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%24 = OpLoad %v4float %23
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%25 = OpFAdd %v4float %21 %24
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%27 = OpAccessChain %_ptr_Output_v4float %_ %int_0
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OpStore %27 %25
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OpReturn
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OpFunctionEnd
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)";
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SetTargetEnv(SPV_ENV_VULKAN_1_3);
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SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
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SinglePassRunAndMatch<EliminateDeadInputComponentsPass>(text, true);
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}
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TEST_F(ElimDeadInputComponentsTest, NoElimMaxConstantIndex) {
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// Should not reduce uv[8] because of max index of 7
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//
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// #version 450
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//
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// layout(location = 0) in vec4 uv[8];
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//
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// out gl_PerVertex {
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// vec4 gl_Position;
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// };
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//
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// void main()
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// {
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// gl_Position = uv[1] + uv[7];
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// }
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const std::string text = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Vertex %main "main" %_ %uv
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OpSource GLSL 450
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OpName %main "main"
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OpName %gl_PerVertex "gl_PerVertex"
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OpMemberName %gl_PerVertex 0 "gl_Position"
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OpName %_ ""
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OpName %uv "uv"
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OpMemberDecorate %gl_PerVertex 0 BuiltIn Position
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OpDecorate %gl_PerVertex Block
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OpDecorate %uv Location 0
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%void = OpTypeVoid
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%3 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%gl_PerVertex = OpTypeStruct %v4float
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%_ptr_Output_gl_PerVertex = OpTypePointer Output %gl_PerVertex
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%_ = OpVariable %_ptr_Output_gl_PerVertex Output
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%int = OpTypeInt 32 1
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%int_0 = OpConstant %int 0
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%uint = OpTypeInt 32 0
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%uint_8 = OpConstant %uint 8
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%_arr_v4float_uint_8 = OpTypeArray %v4float %uint_8
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%_ptr_Input__arr_v4float_uint_8 = OpTypePointer Input %_arr_v4float_uint_8
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%uv = OpVariable %_ptr_Input__arr_v4float_uint_8 Input
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%int_1 = OpConstant %int 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%int_7 = OpConstant %int 7
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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;CHECK: %uv = OpVariable %_ptr_Input__arr_v4float_uint_8 Input
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%main = OpFunction %void None %3
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%5 = OpLabel
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%20 = OpAccessChain %_ptr_Input_v4float %uv %int_1
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%21 = OpLoad %v4float %20
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%23 = OpAccessChain %_ptr_Input_v4float %uv %int_7
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%24 = OpLoad %v4float %23
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%25 = OpFAdd %v4float %21 %24
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%27 = OpAccessChain %_ptr_Output_v4float %_ %int_0
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OpStore %27 %25
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OpReturn
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OpFunctionEnd
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)";
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SetTargetEnv(SPV_ENV_VULKAN_1_3);
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SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
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SinglePassRunAndMatch<EliminateDeadInputComponentsPass>(text, true);
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}
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TEST_F(ElimDeadInputComponentsTest, NoElimNonConstantIndex) {
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// Should not reduce uv[8] because of non-constant index of ui
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//
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// #version 450
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//
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// layout(location = 0) in vec4 uv[8];
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//
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// out gl_PerVertex {
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// vec4 gl_Position;
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// };
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//
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// uniform ubname {
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// int ui;
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// } ubinst;
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//
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// void main()
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// {
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// gl_Position = uv[1] + uv[ubinst.ui];
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// }
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const std::string text = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Vertex %main "main" %_ %uv %ubinst
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OpSource GLSL 450
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OpName %main "main"
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OpName %gl_PerVertex "gl_PerVertex"
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OpMemberName %gl_PerVertex 0 "gl_Position"
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OpName %_ ""
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OpName %uv "uv"
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OpName %ubname "ubname"
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OpMemberName %ubname 0 "ui"
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OpName %ubinst "ubinst"
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OpMemberDecorate %gl_PerVertex 0 BuiltIn Position
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OpDecorate %gl_PerVertex Block
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OpDecorate %uv Location 0
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OpMemberDecorate %ubname 0 Offset 0
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OpDecorate %ubname Block
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OpDecorate %ubinst DescriptorSet 0
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OpDecorate %ubinst Binding 0
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%void = OpTypeVoid
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%3 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%gl_PerVertex = OpTypeStruct %v4float
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%_ptr_Output_gl_PerVertex = OpTypePointer Output %gl_PerVertex
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%_ = OpVariable %_ptr_Output_gl_PerVertex Output
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%int = OpTypeInt 32 1
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%int_0 = OpConstant %int 0
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%uint = OpTypeInt 32 0
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%uint_8 = OpConstant %uint 8
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%_arr_v4float_uint_8 = OpTypeArray %v4float %uint_8
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%_ptr_Input__arr_v4float_uint_8 = OpTypePointer Input %_arr_v4float_uint_8
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%uv = OpVariable %_ptr_Input__arr_v4float_uint_8 Input
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%int_1 = OpConstant %int 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%ubname = OpTypeStruct %int
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%_ptr_Uniform_ubname = OpTypePointer Uniform %ubname
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%ubinst = OpVariable %_ptr_Uniform_ubname Uniform
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%_ptr_Uniform_int = OpTypePointer Uniform %int
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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;CHECK: %uv = OpVariable %_ptr_Input__arr_v4float_uint_8 Input
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%main = OpFunction %void None %3
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%5 = OpLabel
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%20 = OpAccessChain %_ptr_Input_v4float %uv %int_1
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%21 = OpLoad %v4float %20
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%26 = OpAccessChain %_ptr_Uniform_int %ubinst %int_0
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%27 = OpLoad %int %26
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%28 = OpAccessChain %_ptr_Input_v4float %uv %27
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%29 = OpLoad %v4float %28
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%30 = OpFAdd %v4float %21 %29
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%32 = OpAccessChain %_ptr_Output_v4float %_ %int_0
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OpStore %32 %30
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OpReturn
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OpFunctionEnd
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)";
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SetTargetEnv(SPV_ENV_VULKAN_1_3);
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SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
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SinglePassRunAndMatch<EliminateDeadInputComponentsPass>(text, true);
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}
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TEST_F(ElimDeadInputComponentsTest, NoElimNonIndexedAccessChain) {
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// Should not change due to non-indexed access chain
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const std::string text = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Vertex %main "main" %_ %uv
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OpSource GLSL 450
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OpName %main "main"
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OpName %gl_PerVertex "gl_PerVertex"
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OpMemberName %gl_PerVertex 0 "gl_Position"
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OpName %_ ""
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OpName %uv "uv"
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OpMemberDecorate %gl_PerVertex 0 BuiltIn Position
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OpDecorate %gl_PerVertex Block
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OpDecorate %uv Location 0
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%void = OpTypeVoid
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%3 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%gl_PerVertex = OpTypeStruct %v4float
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%_ptr_Output_gl_PerVertex = OpTypePointer Output %gl_PerVertex
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%_ = OpVariable %_ptr_Output_gl_PerVertex Output
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%int = OpTypeInt 32 1
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%int_0 = OpConstant %int 0
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%uint = OpTypeInt 32 0
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%uint_8 = OpConstant %uint 8
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%_arr_v4float_uint_8 = OpTypeArray %v4float %uint_8
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%_ptr_Input__arr_v4float_uint_8 = OpTypePointer Input %_arr_v4float_uint_8
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%uv = OpVariable %_ptr_Input__arr_v4float_uint_8 Input
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%int_1 = OpConstant %int 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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;CHECK: %uv = OpVariable %_ptr_Input__arr_v4float_uint_8 Input
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%main = OpFunction %void None %3
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%5 = OpLabel
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%20 = OpAccessChain %_ptr_Input__arr_v4float_uint_8 %uv
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OpReturn
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OpFunctionEnd
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)";
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SetTargetEnv(SPV_ENV_VULKAN_1_3);
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SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
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SinglePassRunAndMatch<EliminateDeadInputComponentsPass>(text, true);
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}
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TEST_F(ElimDeadInputComponentsTest, ElimStructMember) {
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// Should eliminate uv
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//
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// #version 450
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//
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// in Vertex {
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// vec4 Cd;
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// vec2 uv;
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// } iVert;
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//
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// out vec4 fragColor;
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//
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// void main()
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// {
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// vec4 color = vec4(iVert.Cd);
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// fragColor = color;
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// }
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const std::string text = R"(
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %main "main" %iVert %fragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 450
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OpName %main "main"
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OpName %Vertex "Vertex"
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OpMemberName %Vertex 0 "Cd"
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OpMemberName %Vertex 1 "uv"
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OpName %iVert "iVert"
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OpName %fragColor "fragColor"
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OpDecorate %Vertex Block
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OpDecorate %iVert Location 0
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OpDecorate %fragColor Location 0
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%void = OpTypeVoid
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%3 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%v2float = OpTypeVector %float 2
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%Vertex = OpTypeStruct %v4float %v2float
|
|
; CHECK: %Vertex = OpTypeStruct %v4float %v2float
|
|
; CHECK: [[sty:%\w+]] = OpTypeStruct %v4float
|
|
%_ptr_Input_Vertex = OpTypePointer Input %Vertex
|
|
; CHECK: [[pty:%\w+]] = OpTypePointer Input [[sty]]
|
|
%iVert = OpVariable %_ptr_Input_Vertex Input
|
|
; CHECK: %iVert = OpVariable [[pty]] Input
|
|
%int = OpTypeInt 32 1
|
|
%int_0 = OpConstant %int 0
|
|
%_ptr_Input_v4float = OpTypePointer Input %v4float
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%fragColor = OpVariable %_ptr_Output_v4float Output
|
|
%main = OpFunction %void None %3
|
|
%5 = OpLabel
|
|
%17 = OpAccessChain %_ptr_Input_v4float %iVert %int_0
|
|
%18 = OpLoad %v4float %17
|
|
OpStore %fragColor %18
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SetTargetEnv(SPV_ENV_VULKAN_1_3);
|
|
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
|
|
SinglePassRunAndMatch<EliminateDeadInputComponentsPass>(text, true);
|
|
}
|
|
|
|
TEST_F(ElimDeadInputComponentsTest, ElimOutputStructMember) {
|
|
// Should eliminate uv from Vertex and all but gl_Position from gl_PerVertex
|
|
//
|
|
// #version 450
|
|
//
|
|
// out Vertex {
|
|
// vec4 Cd;
|
|
// vec2 uv;
|
|
// } oVert;
|
|
//
|
|
// in vec3 P;
|
|
//
|
|
// void main()
|
|
// {
|
|
// vec4 worldSpacePos = vec4(P, 1);
|
|
// oVert.Cd = vec4(1, 0.5, 0, 1);
|
|
// gl_Position = worldSpacePos;
|
|
// }
|
|
|
|
const std::string text = R"(
|
|
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Vertex %main "main" %P %oVert %_
|
|
OpSource GLSL 450
|
|
OpName %main "main"
|
|
OpName %P "P"
|
|
OpName %Vertex "Vertex"
|
|
OpMemberName %Vertex 0 "Cd"
|
|
OpMemberName %Vertex 1 "uv"
|
|
OpName %oVert "oVert"
|
|
OpName %gl_PerVertex "gl_PerVertex"
|
|
OpMemberName %gl_PerVertex 0 "gl_Position"
|
|
OpMemberName %gl_PerVertex 1 "gl_PointSize"
|
|
OpMemberName %gl_PerVertex 2 "gl_ClipDistance"
|
|
OpMemberName %gl_PerVertex 3 "gl_CullDistance"
|
|
OpName %_ ""
|
|
OpDecorate %P Location 0
|
|
OpDecorate %Vertex Block
|
|
OpDecorate %oVert Location 0
|
|
OpMemberDecorate %gl_PerVertex 0 BuiltIn Position
|
|
OpMemberDecorate %gl_PerVertex 1 BuiltIn PointSize
|
|
OpMemberDecorate %gl_PerVertex 2 BuiltIn ClipDistance
|
|
OpMemberDecorate %gl_PerVertex 3 BuiltIn CullDistance
|
|
OpDecorate %gl_PerVertex Block
|
|
%void = OpTypeVoid
|
|
%3 = OpTypeFunction %void
|
|
%float = OpTypeFloat 32
|
|
%v4float = OpTypeVector %float 4
|
|
%v3float = OpTypeVector %float 3
|
|
%_ptr_Input_v3float = OpTypePointer Input %v3float
|
|
%P = OpVariable %_ptr_Input_v3float Input
|
|
%float_1 = OpConstant %float 1
|
|
%v2float = OpTypeVector %float 2
|
|
%Vertex = OpTypeStruct %v4float %v2float
|
|
%_ptr_Output_Vertex = OpTypePointer Output %Vertex
|
|
%oVert = OpVariable %_ptr_Output_Vertex Output
|
|
%int = OpTypeInt 32 1
|
|
%int_0 = OpConstant %int 0
|
|
%float_0_5 = OpConstant %float 0.5
|
|
%float_0 = OpConstant %float 0
|
|
%27 = OpConstantComposite %v4float %float_1 %float_0_5 %float_0 %float_1
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%uint = OpTypeInt 32 0
|
|
%uint_1 = OpConstant %uint 1
|
|
%_arr_float_uint_1 = OpTypeArray %float %uint_1
|
|
%gl_PerVertex = OpTypeStruct %v4float %float %_arr_float_uint_1 %_arr_float_uint_1
|
|
%_ptr_Output_gl_PerVertex = OpTypePointer Output %gl_PerVertex
|
|
%_ = OpVariable %_ptr_Output_gl_PerVertex Output
|
|
; CHECK: %Vertex = OpTypeStruct %v4float %v2float
|
|
; CHECK: %gl_PerVertex = OpTypeStruct %v4float %float %_arr_float_uint_1 %_arr_float_uint_1
|
|
; CHECK: %_ptr_Output_gl_PerVertex = OpTypePointer Output %gl_PerVertex
|
|
; CHECK: [[sty:%\w+]] = OpTypeStruct %v4float
|
|
; CHECK: [[pty:%\w+]] = OpTypePointer Output [[sty]]
|
|
; CHECK: %oVert = OpVariable [[pty]] Output
|
|
; CHECK: [[sty2:%\w+]] = OpTypeStruct %v4float
|
|
; CHECK: [[pty2:%\w+]] = OpTypePointer Output [[sty2]]
|
|
; CHECK: %_ = OpVariable [[pty2]] Output
|
|
%main = OpFunction %void None %3
|
|
%5 = OpLabel
|
|
%13 = OpLoad %v3float %P
|
|
%15 = OpCompositeExtract %float %13 0
|
|
%16 = OpCompositeExtract %float %13 1
|
|
%17 = OpCompositeExtract %float %13 2
|
|
%18 = OpCompositeConstruct %v4float %15 %16 %17 %float_1
|
|
%29 = OpAccessChain %_ptr_Output_v4float %oVert %int_0
|
|
OpStore %29 %27
|
|
%37 = OpAccessChain %_ptr_Output_v4float %_ %int_0
|
|
OpStore %37 %18
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SetTargetEnv(SPV_ENV_VULKAN_1_3);
|
|
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
|
|
SinglePassRunAndMatch<EliminateDeadInputComponentsPass>(text, true, true);
|
|
}
|
|
|
|
TEST_F(ElimDeadInputComponentsTest, ElimOutputArrayMembers) {
|
|
// Should reduce to uv[2]
|
|
//
|
|
// #version 450
|
|
//
|
|
// layout(location = 0) out vec2 uv[8];
|
|
//
|
|
// void main()
|
|
// {
|
|
// uv[1] = vec2(1, 0.5);
|
|
// }
|
|
|
|
const std::string text = R"(
|
|
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Vertex %main "main" %uv
|
|
OpSource GLSL 450
|
|
OpName %main "main"
|
|
OpName %uv "uv"
|
|
OpDecorate %uv Location 0
|
|
%void = OpTypeVoid
|
|
%3 = OpTypeFunction %void
|
|
%float = OpTypeFloat 32
|
|
%v2float = OpTypeVector %float 2
|
|
%uint = OpTypeInt 32 0
|
|
%uint_8 = OpConstant %uint 8
|
|
%_arr_v2float_uint_8 = OpTypeArray %v2float %uint_8
|
|
%_ptr_Output__arr_v2float_uint_8 = OpTypePointer Output %_arr_v2float_uint_8
|
|
%uv = OpVariable %_ptr_Output__arr_v2float_uint_8 Output
|
|
;CHECK-NOT: %uv = OpVariable %_ptr_Output__arr_v2float_uint_8 Output
|
|
;CHECK: %uv = OpVariable %_ptr_Output__arr_v2float_uint_2 Output
|
|
%int = OpTypeInt 32 1
|
|
%int_1 = OpConstant %int 1
|
|
%float_1 = OpConstant %float 1
|
|
%float_0_5 = OpConstant %float 0.5
|
|
%17 = OpConstantComposite %v2float %float_1 %float_0_5
|
|
%_ptr_Output_v2float = OpTypePointer Output %v2float
|
|
%main = OpFunction %void None %3
|
|
%5 = OpLabel
|
|
%19 = OpAccessChain %_ptr_Output_v2float %uv %int_1
|
|
OpStore %19 %17
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SetTargetEnv(SPV_ENV_VULKAN_1_3);
|
|
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
|
|
SinglePassRunAndMatch<EliminateDeadInputComponentsPass>(text, true, true);
|
|
}
|
|
|
|
} // namespace
|
|
} // namespace opt
|
|
} // namespace spvtools
|