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https://github.com/KhronosGroup/SPIRV-Tools
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79a00649b4
A few optimizations are updates to handle code that is suppose to be using the logical addressing mode, but still has variables that contain pointers as long as the pointer are to opaque objects. This is called "relaxed logical addressing". |Instruction::GetBaseAddress| will check that pointers that are use meet the relaxed logical addressing rules. Optimization that now handle relaxed logical addressing instead of logical addressing are: - aggressive dead-code elimination - local access chain convert - local store elimination passes.
830 lines
24 KiB
C++
830 lines
24 KiB
C++
// Copyright (c) 2017 Valve Corporation
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// Copyright (c) 2017 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 "pass_fixture.h"
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#include "pass_utils.h"
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namespace {
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using namespace spvtools;
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using LocalSingleStoreElimTest = PassTest<::testing::Test>;
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TEST_F(LocalSingleStoreElimTest, PositiveAndNegative) {
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// Single store to v is optimized. Multiple store to
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// f is not optimized.
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//
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// #version 140
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//
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// in vec4 BaseColor;
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// in float fi;
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//
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// void main()
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// {
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// vec4 v = BaseColor;
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// float f = fi;
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// if (f < 0)
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// f = 0.0;
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// gl_FragColor = v + f;
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// }
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const std::string predefs_before =
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R"(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" %BaseColor %fi %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %v "v"
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OpName %BaseColor "BaseColor"
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OpName %f "f"
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OpName %fi "fi"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%9 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_float = OpTypePointer Function %float
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%_ptr_Input_float = OpTypePointer Input %float
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%fi = OpVariable %_ptr_Input_float Input
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%float_0 = OpConstant %float 0
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%bool = OpTypeBool
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string predefs_after =
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R"(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" %BaseColor %fi %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %BaseColor "BaseColor"
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OpName %f "f"
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OpName %fi "fi"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%9 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_float = OpTypePointer Function %float
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%_ptr_Input_float = OpTypePointer Input %float
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%fi = OpVariable %_ptr_Input_float Input
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%float_0 = OpConstant %float 0
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%bool = OpTypeBool
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string before =
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R"(%main = OpFunction %void None %9
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%19 = OpLabel
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%v = OpVariable %_ptr_Function_v4float Function
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%f = OpVariable %_ptr_Function_float Function
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%20 = OpLoad %v4float %BaseColor
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OpStore %v %20
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%21 = OpLoad %float %fi
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OpStore %f %21
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%22 = OpLoad %float %f
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%23 = OpFOrdLessThan %bool %22 %float_0
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OpSelectionMerge %24 None
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OpBranchConditional %23 %25 %24
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%25 = OpLabel
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OpStore %f %float_0
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OpBranch %24
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%24 = OpLabel
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%26 = OpLoad %v4float %v
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%27 = OpLoad %float %f
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%28 = OpCompositeConstruct %v4float %27 %27 %27 %27
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%29 = OpFAdd %v4float %26 %28
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OpStore %gl_FragColor %29
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OpReturn
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OpFunctionEnd
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)";
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const std::string after =
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R"(%main = OpFunction %void None %9
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%19 = OpLabel
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%f = OpVariable %_ptr_Function_float Function
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%20 = OpLoad %v4float %BaseColor
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%21 = OpLoad %float %fi
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OpStore %f %21
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%22 = OpLoad %float %f
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%23 = OpFOrdLessThan %bool %22 %float_0
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OpSelectionMerge %24 None
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OpBranchConditional %23 %25 %24
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%25 = OpLabel
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OpStore %f %float_0
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OpBranch %24
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%24 = OpLabel
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%27 = OpLoad %float %f
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%28 = OpCompositeConstruct %v4float %27 %27 %27 %27
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%29 = OpFAdd %v4float %20 %28
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OpStore %gl_FragColor %29
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalSingleStoreElimPass>(
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predefs_before + before, predefs_after + after, true, true);
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}
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TEST_F(LocalSingleStoreElimTest, MultipleLoads) {
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// Single store to multiple loads of v is optimized.
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//
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// #version 140
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//
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// in vec4 BaseColor;
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// in float fi;
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//
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// void main()
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// {
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// vec4 v = BaseColor;
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// float f = fi;
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// if (f < 0)
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// f = 0.0;
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// gl_FragColor = v + f;
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// }
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const std::string predefs_before =
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R"(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" %BaseColor %fi %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %v "v"
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OpName %BaseColor "BaseColor"
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OpName %fi "fi"
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OpName %r "r"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%9 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Input_float = OpTypePointer Input %float
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%fi = OpVariable %_ptr_Input_float Input
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%float_0 = OpConstant %float 0
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%bool = OpTypeBool
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%float_1 = OpConstant %float 1
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string predefs_after =
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R"(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" %BaseColor %fi %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %BaseColor "BaseColor"
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OpName %fi "fi"
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OpName %r "r"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%9 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Input_float = OpTypePointer Input %float
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%fi = OpVariable %_ptr_Input_float Input
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%float_0 = OpConstant %float 0
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%bool = OpTypeBool
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%float_1 = OpConstant %float 1
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string before =
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R"(%main = OpFunction %void None %9
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%19 = OpLabel
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%v = OpVariable %_ptr_Function_v4float Function
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%r = OpVariable %_ptr_Function_v4float Function
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%20 = OpLoad %v4float %BaseColor
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OpStore %v %20
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%21 = OpLoad %float %fi
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%22 = OpFOrdLessThan %bool %21 %float_0
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OpSelectionMerge %23 None
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OpBranchConditional %22 %24 %25
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%24 = OpLabel
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%26 = OpLoad %v4float %v
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OpStore %r %26
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OpBranch %23
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%25 = OpLabel
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%27 = OpLoad %v4float %v
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%28 = OpCompositeConstruct %v4float %float_1 %float_1 %float_1 %float_1
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%29 = OpFSub %v4float %28 %27
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OpStore %r %29
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OpBranch %23
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%23 = OpLabel
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%30 = OpLoad %v4float %r
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OpStore %gl_FragColor %30
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OpReturn
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OpFunctionEnd
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)";
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const std::string after =
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R"(%main = OpFunction %void None %9
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%19 = OpLabel
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%r = OpVariable %_ptr_Function_v4float Function
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%20 = OpLoad %v4float %BaseColor
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%21 = OpLoad %float %fi
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%22 = OpFOrdLessThan %bool %21 %float_0
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OpSelectionMerge %23 None
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OpBranchConditional %22 %24 %25
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%24 = OpLabel
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OpStore %r %20
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OpBranch %23
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%25 = OpLabel
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%28 = OpCompositeConstruct %v4float %float_1 %float_1 %float_1 %float_1
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%29 = OpFSub %v4float %28 %20
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OpStore %r %29
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OpBranch %23
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%23 = OpLabel
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%30 = OpLoad %v4float %r
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OpStore %gl_FragColor %30
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalSingleStoreElimPass>(
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predefs_before + before, predefs_after + after, true, true);
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}
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TEST_F(LocalSingleStoreElimTest, NoStoreElimWithInterveningAccessChainLoad) {
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// Last load of v is eliminated, but access chain load and store of v isn't
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//
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// #version 140
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//
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// in vec4 BaseColor;
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//
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// void main()
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// {
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// vec4 v = BaseColor;
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// float f = v[3];
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// gl_FragColor = v * f;
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// }
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const std::string predefs_before =
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R"(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" %BaseColor %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %v "v"
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OpName %BaseColor "BaseColor"
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OpName %f "f"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%8 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_float = OpTypePointer Function %float
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%uint = OpTypeInt 32 0
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%uint_3 = OpConstant %uint 3
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string predefs_after =
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R"(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" %BaseColor %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %v "v"
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OpName %BaseColor "BaseColor"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%8 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_float = OpTypePointer Function %float
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%uint = OpTypeInt 32 0
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%uint_3 = OpConstant %uint 3
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string before =
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R"(%main = OpFunction %void None %8
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%17 = OpLabel
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%v = OpVariable %_ptr_Function_v4float Function
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%f = OpVariable %_ptr_Function_float Function
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%18 = OpLoad %v4float %BaseColor
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OpStore %v %18
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%19 = OpAccessChain %_ptr_Function_float %v %uint_3
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%20 = OpLoad %float %19
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OpStore %f %20
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%21 = OpLoad %v4float %v
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%22 = OpLoad %float %f
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%23 = OpVectorTimesScalar %v4float %21 %22
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OpStore %gl_FragColor %23
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OpReturn
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OpFunctionEnd
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)";
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const std::string after =
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R"(%main = OpFunction %void None %8
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%17 = OpLabel
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%v = OpVariable %_ptr_Function_v4float Function
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%18 = OpLoad %v4float %BaseColor
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OpStore %v %18
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%19 = OpAccessChain %_ptr_Function_float %v %uint_3
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%20 = OpLoad %float %19
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%23 = OpVectorTimesScalar %v4float %18 %20
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OpStore %gl_FragColor %23
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalSingleStoreElimPass>(
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predefs_before + before, predefs_after + after, true, true);
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}
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TEST_F(LocalSingleStoreElimTest, NoReplaceOfDominatingPartialStore) {
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// Note: SPIR-V hand edited to initialize v to vec4(0.0)
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//
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// #version 140
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//
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// in vec4 BaseColor;
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//
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// void main()
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// {
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// vec4 v;
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// float v[1] = 1.0;
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// gl_FragColor = v;
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// }
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const std::string assembly =
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R"(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" %gl_FragColor %BaseColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %v "v"
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OpName %gl_FragColor "gl_FragColor"
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OpName %BaseColor "BaseColor"
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%void = OpTypeVoid
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%7 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%float_0 = OpConstant %float 0
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%12 = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0
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%float_1 = OpConstant %float 1
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%uint = OpTypeInt 32 0
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%uint_1 = OpConstant %uint 1
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%_ptr_Function_float = OpTypePointer Function %float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%main = OpFunction %void None %7
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%19 = OpLabel
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%v = OpVariable %_ptr_Function_v4float Function %12
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%20 = OpAccessChain %_ptr_Function_float %v %uint_1
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OpStore %20 %float_1
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%21 = OpLoad %v4float %v
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OpStore %gl_FragColor %21
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalSingleStoreElimPass>(assembly, assembly, true,
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true);
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}
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TEST_F(LocalSingleStoreElimTest, ElimIfCopyObjectInFunction) {
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// Note: hand edited to insert OpCopyObject
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//
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// #version 140
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//
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// in vec4 BaseColor;
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// in float fi;
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//
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// void main()
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// {
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// vec4 v = BaseColor;
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// float f = fi;
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// if (f < 0)
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// f = 0.0;
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// gl_FragColor = v + f;
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// }
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const std::string predefs_before =
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R"(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" %BaseColor %fi %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %v "v"
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OpName %BaseColor "BaseColor"
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OpName %f "f"
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OpName %fi "fi"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%9 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_float = OpTypePointer Function %float
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%_ptr_Input_float = OpTypePointer Input %float
|
|
%fi = OpVariable %_ptr_Input_float Input
|
|
%float_0 = OpConstant %float 0
|
|
%bool = OpTypeBool
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
|
|
)";
|
|
|
|
const std::string predefs_after =
|
|
R"(OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %main "main" %BaseColor %fi %gl_FragColor
|
|
OpExecutionMode %main OriginUpperLeft
|
|
OpSource GLSL 140
|
|
OpName %main "main"
|
|
OpName %BaseColor "BaseColor"
|
|
OpName %f "f"
|
|
OpName %fi "fi"
|
|
OpName %gl_FragColor "gl_FragColor"
|
|
%void = OpTypeVoid
|
|
%9 = OpTypeFunction %void
|
|
%float = OpTypeFloat 32
|
|
%v4float = OpTypeVector %float 4
|
|
%_ptr_Function_v4float = OpTypePointer Function %v4float
|
|
%_ptr_Input_v4float = OpTypePointer Input %v4float
|
|
%BaseColor = OpVariable %_ptr_Input_v4float Input
|
|
%_ptr_Function_float = OpTypePointer Function %float
|
|
%_ptr_Input_float = OpTypePointer Input %float
|
|
%fi = OpVariable %_ptr_Input_float Input
|
|
%float_0 = OpConstant %float 0
|
|
%bool = OpTypeBool
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
|
|
)";
|
|
|
|
const std::string before =
|
|
R"(%main = OpFunction %void None %9
|
|
%19 = OpLabel
|
|
%v = OpVariable %_ptr_Function_v4float Function
|
|
%f = OpVariable %_ptr_Function_float Function
|
|
%20 = OpLoad %v4float %BaseColor
|
|
OpStore %v %20
|
|
%21 = OpLoad %float %fi
|
|
OpStore %f %21
|
|
%22 = OpLoad %float %f
|
|
%23 = OpFOrdLessThan %bool %22 %float_0
|
|
OpSelectionMerge %24 None
|
|
OpBranchConditional %23 %25 %24
|
|
%25 = OpLabel
|
|
OpStore %f %float_0
|
|
OpBranch %24
|
|
%24 = OpLabel
|
|
%26 = OpCopyObject %_ptr_Function_v4float %v
|
|
%27 = OpLoad %v4float %26
|
|
%28 = OpLoad %float %f
|
|
%29 = OpCompositeConstruct %v4float %28 %28 %28 %28
|
|
%30 = OpFAdd %v4float %27 %29
|
|
OpStore %gl_FragColor %30
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
const std::string after =
|
|
R"(%main = OpFunction %void None %9
|
|
%19 = OpLabel
|
|
%f = OpVariable %_ptr_Function_float Function
|
|
%20 = OpLoad %v4float %BaseColor
|
|
%21 = OpLoad %float %fi
|
|
OpStore %f %21
|
|
%22 = OpLoad %float %f
|
|
%23 = OpFOrdLessThan %bool %22 %float_0
|
|
OpSelectionMerge %24 None
|
|
OpBranchConditional %23 %25 %24
|
|
%25 = OpLabel
|
|
OpStore %f %float_0
|
|
OpBranch %24
|
|
%24 = OpLabel
|
|
%28 = OpLoad %float %f
|
|
%29 = OpCompositeConstruct %v4float %28 %28 %28 %28
|
|
%30 = OpFAdd %v4float %20 %29
|
|
OpStore %gl_FragColor %30
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndCheck<opt::LocalSingleStoreElimPass>(
|
|
predefs_before + before, predefs_after + after, true, true);
|
|
}
|
|
|
|
TEST_F(LocalSingleStoreElimTest, NoOptIfStoreNotDominating) {
|
|
// Single store to f not optimized because it does not dominate
|
|
// the load.
|
|
//
|
|
// #version 140
|
|
//
|
|
// in vec4 BaseColor;
|
|
// in float fi;
|
|
//
|
|
// void main()
|
|
// {
|
|
// float f;
|
|
// if (fi < 0)
|
|
// f = 0.5;
|
|
// if (fi < 0)
|
|
// gl_FragColor = BaseColor * f;
|
|
// else
|
|
// gl_FragColor = BaseColor;
|
|
// }
|
|
|
|
const std::string assembly =
|
|
R"(OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %main "main" %fi %gl_FragColor %BaseColor
|
|
OpExecutionMode %main OriginUpperLeft
|
|
OpSource GLSL 140
|
|
OpName %main "main"
|
|
OpName %fi "fi"
|
|
OpName %f "f"
|
|
OpName %gl_FragColor "gl_FragColor"
|
|
OpName %BaseColor "BaseColor"
|
|
%void = OpTypeVoid
|
|
%8 = OpTypeFunction %void
|
|
%float = OpTypeFloat 32
|
|
%_ptr_Input_float = OpTypePointer Input %float
|
|
%fi = OpVariable %_ptr_Input_float Input
|
|
%float_0 = OpConstant %float 0
|
|
%bool = OpTypeBool
|
|
%_ptr_Function_float = OpTypePointer Function %float
|
|
%float_0_5 = OpConstant %float 0.5
|
|
%v4float = OpTypeVector %float 4
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
|
|
%_ptr_Input_v4float = OpTypePointer Input %v4float
|
|
%BaseColor = OpVariable %_ptr_Input_v4float Input
|
|
%main = OpFunction %void None %8
|
|
%18 = OpLabel
|
|
%f = OpVariable %_ptr_Function_float Function
|
|
%19 = OpLoad %float %fi
|
|
%20 = OpFOrdLessThan %bool %19 %float_0
|
|
OpSelectionMerge %21 None
|
|
OpBranchConditional %20 %22 %21
|
|
%22 = OpLabel
|
|
OpStore %f %float_0_5
|
|
OpBranch %21
|
|
%21 = OpLabel
|
|
%23 = OpLoad %float %fi
|
|
%24 = OpFOrdLessThan %bool %23 %float_0
|
|
OpSelectionMerge %25 None
|
|
OpBranchConditional %24 %26 %27
|
|
%26 = OpLabel
|
|
%28 = OpLoad %v4float %BaseColor
|
|
%29 = OpLoad %float %f
|
|
%30 = OpVectorTimesScalar %v4float %28 %29
|
|
OpStore %gl_FragColor %30
|
|
OpBranch %25
|
|
%27 = OpLabel
|
|
%31 = OpLoad %v4float %BaseColor
|
|
OpStore %gl_FragColor %31
|
|
OpBranch %25
|
|
%25 = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndCheck<opt::LocalSingleStoreElimPass>(assembly, assembly, true,
|
|
true);
|
|
}
|
|
|
|
TEST_F(LocalSingleStoreElimTest, OptInitializedVariableLikeStore) {
|
|
// Initialized variable f is optimized like it was a store.
|
|
// Note: The SPIR-V was edited to turn the store to f to an
|
|
// an initialization.
|
|
//
|
|
// #version 140
|
|
//
|
|
// void main()
|
|
// {
|
|
// float f = 0.0;
|
|
// gl_FragColor = vec4(f);
|
|
// }
|
|
|
|
const std::string predefs_before =
|
|
R"(OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %main "main" %gl_FragColor
|
|
OpExecutionMode %main OriginUpperLeft
|
|
OpSource GLSL 140
|
|
OpName %main "main"
|
|
OpName %f "f"
|
|
OpName %gl_FragColor "gl_FragColor"
|
|
OpDecorate %gl_FragColor Location 0
|
|
%void = OpTypeVoid
|
|
%6 = OpTypeFunction %void
|
|
%float = OpTypeFloat 32
|
|
%_ptr_Function_float = OpTypePointer Function %float
|
|
%float_0 = OpConstant %float 0
|
|
%v4float = OpTypeVector %float 4
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
|
|
)";
|
|
|
|
const std::string predefs_after =
|
|
R"(OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %main "main" %gl_FragColor
|
|
OpExecutionMode %main OriginUpperLeft
|
|
OpSource GLSL 140
|
|
OpName %main "main"
|
|
OpName %gl_FragColor "gl_FragColor"
|
|
OpDecorate %gl_FragColor Location 0
|
|
%void = OpTypeVoid
|
|
%6 = OpTypeFunction %void
|
|
%float = OpTypeFloat 32
|
|
%_ptr_Function_float = OpTypePointer Function %float
|
|
%float_0 = OpConstant %float 0
|
|
%v4float = OpTypeVector %float 4
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
|
|
)";
|
|
|
|
const std::string before =
|
|
R"(%main = OpFunction %void None %6
|
|
%12 = OpLabel
|
|
%f = OpVariable %_ptr_Function_float Function %float_0
|
|
%13 = OpLoad %float %f
|
|
%14 = OpCompositeConstruct %v4float %13 %13 %13 %13
|
|
OpStore %gl_FragColor %14
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
const std::string after =
|
|
R"(%main = OpFunction %void None %6
|
|
%12 = OpLabel
|
|
%14 = OpCompositeConstruct %v4float %float_0 %float_0 %float_0 %float_0
|
|
OpStore %gl_FragColor %14
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndCheck<opt::LocalSingleStoreElimPass>(
|
|
predefs_before + before, predefs_after + after, true, true);
|
|
}
|
|
|
|
TEST_F(LocalSingleStoreElimTest, PointerVariable) {
|
|
// Test that checks if a pointer variable is removed.
|
|
|
|
const std::string before =
|
|
R"(OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %1 "main" %2
|
|
OpExecutionMode %1 OriginUpperLeft
|
|
OpMemberDecorate %_struct_3 0 Offset 0
|
|
OpDecorate %_runtimearr__struct_3 ArrayStride 16
|
|
OpMemberDecorate %_struct_5 0 Offset 0
|
|
OpDecorate %_struct_5 BufferBlock
|
|
OpMemberDecorate %_struct_6 0 Offset 0
|
|
OpDecorate %_struct_6 BufferBlock
|
|
OpDecorate %2 Location 0
|
|
OpDecorate %7 DescriptorSet 0
|
|
OpDecorate %7 Binding 0
|
|
%void = OpTypeVoid
|
|
%10 = OpTypeFunction %void
|
|
%int = OpTypeInt 32 1
|
|
%uint = OpTypeInt 32 0
|
|
%float = OpTypeFloat 32
|
|
%v4float = OpTypeVector %float 4
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%_ptr_Uniform_v4float = OpTypePointer Uniform %v4float
|
|
%_struct_3 = OpTypeStruct %v4float
|
|
%_runtimearr__struct_3 = OpTypeRuntimeArray %_struct_3
|
|
%_struct_5 = OpTypeStruct %_runtimearr__struct_3
|
|
%_ptr_Uniform__struct_5 = OpTypePointer Uniform %_struct_5
|
|
%_struct_6 = OpTypeStruct %int
|
|
%_ptr_Uniform__struct_6 = OpTypePointer Uniform %_struct_6
|
|
%_ptr_Function__ptr_Uniform__struct_5 = OpTypePointer Function %_ptr_Uniform__struct_5
|
|
%_ptr_Function__ptr_Uniform__struct_6 = OpTypePointer Function %_ptr_Uniform__struct_6
|
|
%int_0 = OpConstant %int 0
|
|
%uint_0 = OpConstant %uint 0
|
|
%2 = OpVariable %_ptr_Output_v4float Output
|
|
%7 = OpVariable %_ptr_Uniform__struct_5 Uniform
|
|
%1 = OpFunction %void None %10
|
|
%23 = OpLabel
|
|
%24 = OpVariable %_ptr_Function__ptr_Uniform__struct_5 Function
|
|
OpStore %24 %7
|
|
%26 = OpLoad %_ptr_Uniform__struct_5 %24
|
|
%27 = OpAccessChain %_ptr_Uniform_v4float %26 %int_0 %uint_0 %int_0
|
|
%28 = OpLoad %v4float %27
|
|
%29 = OpCopyObject %v4float %28
|
|
OpStore %2 %28
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
const std::string after =
|
|
R"(OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %1 "main" %2
|
|
OpExecutionMode %1 OriginUpperLeft
|
|
OpMemberDecorate %_struct_3 0 Offset 0
|
|
OpDecorate %_runtimearr__struct_3 ArrayStride 16
|
|
OpMemberDecorate %_struct_5 0 Offset 0
|
|
OpDecorate %_struct_5 BufferBlock
|
|
OpMemberDecorate %_struct_6 0 Offset 0
|
|
OpDecorate %_struct_6 BufferBlock
|
|
OpDecorate %2 Location 0
|
|
OpDecorate %7 DescriptorSet 0
|
|
OpDecorate %7 Binding 0
|
|
%void = OpTypeVoid
|
|
%10 = OpTypeFunction %void
|
|
%int = OpTypeInt 32 1
|
|
%uint = OpTypeInt 32 0
|
|
%float = OpTypeFloat 32
|
|
%v4float = OpTypeVector %float 4
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%_ptr_Uniform_v4float = OpTypePointer Uniform %v4float
|
|
%_struct_3 = OpTypeStruct %v4float
|
|
%_runtimearr__struct_3 = OpTypeRuntimeArray %_struct_3
|
|
%_struct_5 = OpTypeStruct %_runtimearr__struct_3
|
|
%_ptr_Uniform__struct_5 = OpTypePointer Uniform %_struct_5
|
|
%_struct_6 = OpTypeStruct %int
|
|
%_ptr_Uniform__struct_6 = OpTypePointer Uniform %_struct_6
|
|
%_ptr_Function__ptr_Uniform__struct_5 = OpTypePointer Function %_ptr_Uniform__struct_5
|
|
%_ptr_Function__ptr_Uniform__struct_6 = OpTypePointer Function %_ptr_Uniform__struct_6
|
|
%int_0 = OpConstant %int 0
|
|
%uint_0 = OpConstant %uint 0
|
|
%2 = OpVariable %_ptr_Output_v4float Output
|
|
%7 = OpVariable %_ptr_Uniform__struct_5 Uniform
|
|
%1 = OpFunction %void None %10
|
|
%23 = OpLabel
|
|
%27 = OpAccessChain %_ptr_Uniform_v4float %7 %int_0 %uint_0 %int_0
|
|
%28 = OpLoad %v4float %27
|
|
%29 = OpCopyObject %v4float %28
|
|
OpStore %2 %28
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
|
|
SinglePassRunAndCheck<opt::LocalSingleStoreElimPass>(before, after, true,
|
|
true);
|
|
}
|
|
|
|
// TODO(greg-lunarg): Add tests to verify handling of these cases:
|
|
//
|
|
// Other types
|
|
// Others?
|
|
|
|
} // anonymous namespace
|