2017-05-18 20:51:55 +00:00
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// 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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template <typename T> std::vector<T> concat(const std::vector<T> &a, const std::vector<T> &b) {
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std::vector<T> ret = std::vector<T>();
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std::copy(a.begin(), a.end(), back_inserter(ret));
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std::copy(b.begin(), b.end(), back_inserter(ret));
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return ret;
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}
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namespace {
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using namespace spvtools;
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using LocalSingleBlockLoadStoreElimTest = PassTest<::testing::Test>;
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TEST_F(LocalSingleBlockLoadStoreElimTest, SimpleStoreLoadElim) {
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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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// gl_FragColor = v;
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// }
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const std::string predefs =
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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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%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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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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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 %7
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%13 = OpLabel
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%v = OpVariable %_ptr_Function_v4float Function
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%14 = OpLoad %v4float %BaseColor
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OpStore %v %14
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%15 = OpLoad %v4float %v
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OpStore %gl_FragColor %15
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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 %7
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%13 = OpLabel
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%v = OpVariable %_ptr_Function_v4float Function
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%14 = OpLoad %v4float %BaseColor
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OpStore %gl_FragColor %14
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalSingleBlockLoadStoreElimPass>(
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predefs + before, predefs + after, true, true);
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}
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TEST_F(LocalSingleBlockLoadStoreElimTest, SimpleLoadLoadElim) {
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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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// if (fi < 0)
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// v = vec4(0.0);
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// gl_FragData[0] = v;
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// gl_FragData[1] = v;
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// }
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const std::string predefs =
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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_FragData
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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 %gl_FragData "gl_FragData"
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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_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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%16 = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0
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%uint = OpTypeInt 32 0
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%uint_32 = OpConstant %uint 32
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%_arr_v4float_uint_32 = OpTypeArray %v4float %uint_32
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%_ptr_Output__arr_v4float_uint_32 = OpTypePointer Output %_arr_v4float_uint_32
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%gl_FragData = OpVariable %_ptr_Output__arr_v4float_uint_32 Output
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%int = OpTypeInt 32 1
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%int_0 = OpConstant %int 0
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%int_1 = OpConstant %int 1
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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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%25 = OpLabel
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%v = OpVariable %_ptr_Function_v4float Function
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%26 = OpLoad %v4float %BaseColor
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OpStore %v %26
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%27 = OpLoad %float %fi
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%28 = OpFOrdLessThan %bool %27 %float_0
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OpSelectionMerge %29 None
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OpBranchConditional %28 %30 %29
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%30 = OpLabel
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OpStore %v %16
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OpBranch %29
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%29 = OpLabel
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%31 = OpLoad %v4float %v
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%32 = OpAccessChain %_ptr_Output_v4float %gl_FragData %int_0
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OpStore %32 %31
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%33 = OpLoad %v4float %v
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%34 = OpAccessChain %_ptr_Output_v4float %gl_FragData %int_1
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OpStore %34 %33
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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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%25 = OpLabel
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%v = OpVariable %_ptr_Function_v4float Function
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%26 = OpLoad %v4float %BaseColor
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OpStore %v %26
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%27 = OpLoad %float %fi
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%28 = OpFOrdLessThan %bool %27 %float_0
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OpSelectionMerge %29 None
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OpBranchConditional %28 %30 %29
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%30 = OpLabel
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OpStore %v %16
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OpBranch %29
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%29 = OpLabel
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%31 = OpLoad %v4float %v
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%32 = OpAccessChain %_ptr_Output_v4float %gl_FragData %int_0
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OpStore %32 %31
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%34 = OpAccessChain %_ptr_Output_v4float %gl_FragData %int_1
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OpStore %34 %31
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalSingleBlockLoadStoreElimPass>(
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predefs + before, predefs + after, true, true);
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}
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TEST_F(LocalSingleBlockLoadStoreElimTest,
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NoStoreElimIfInterveningAccessChainLoad) {
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//
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// Note that even though the Load to %v is eliminated, the Store to %v
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// is not eliminated due to the following access chain reference.
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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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// flat in int Idx;
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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[Idx];
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// gl_FragColor = v/f;
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// }
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const std::string predefs =
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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 %Idx %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 %Idx "Idx"
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OpName %gl_FragColor "gl_FragColor"
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OpDecorate %Idx Flat
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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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%int = OpTypeInt 32 1
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%_ptr_Input_int = OpTypePointer Input %int
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%Idx = OpVariable %_ptr_Input_int Input
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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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%18 = 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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%19 = OpLoad %v4float %BaseColor
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OpStore %v %19
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%20 = OpLoad %int %Idx
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%21 = OpAccessChain %_ptr_Function_float %v %20
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%22 = OpLoad %float %21
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OpStore %f %22
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%23 = OpLoad %v4float %v
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%24 = OpLoad %float %f
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%25 = OpCompositeConstruct %v4float %24 %24 %24 %24
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%26 = OpFDiv %v4float %23 %25
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OpStore %gl_FragColor %26
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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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%18 = 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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%19 = OpLoad %v4float %BaseColor
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OpStore %v %19
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%20 = OpLoad %int %Idx
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%21 = OpAccessChain %_ptr_Function_float %v %20
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%22 = OpLoad %float %21
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%25 = OpCompositeConstruct %v4float %22 %22 %22 %22
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%26 = OpFDiv %v4float %19 %25
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OpStore %gl_FragColor %26
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalSingleBlockLoadStoreElimPass>(
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predefs + before, predefs + after, true, true);
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}
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TEST_F(LocalSingleBlockLoadStoreElimTest, NoElimIfInterveningAccessChainStore) {
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// #version 140
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//
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// in vec4 BaseColor;
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// flat in int Idx;
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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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// v[Idx] = 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" %BaseColor %Idx %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 %Idx "Idx"
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OpName %gl_FragColor "gl_FragColor"
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OpDecorate %Idx Flat
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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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%int = OpTypeInt 32 1
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%_ptr_Input_int = OpTypePointer Input %int
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%Idx = OpVariable %_ptr_Input_int Input
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%float_0 = OpConstant %float 0
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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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%main = OpFunction %void None %8
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%18 = OpLabel
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%v = OpVariable %_ptr_Function_v4float Function
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%19 = OpLoad %v4float %BaseColor
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OpStore %v %19
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%20 = OpLoad %int %Idx
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%21 = OpAccessChain %_ptr_Function_float %v %20
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OpStore %21 %float_0
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%22 = OpLoad %v4float %v
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OpStore %gl_FragColor %22
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalSingleBlockLoadStoreElimPass>(
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assembly, assembly, false, true);
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}
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TEST_F(LocalSingleBlockLoadStoreElimTest, NoElimIfInterveningFunctionCall) {
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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 foo() {
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// }
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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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// foo();
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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" %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 %foo_ "foo("
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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_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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%main = OpFunction %void None %8
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|
%14 = OpLabel
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|
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|
%v = OpVariable %_ptr_Function_v4float Function
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|
%15 = OpLoad %v4float %BaseColor
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|
OpStore %v %15
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%16 = OpFunctionCall %void %foo_
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%17 = OpLoad %v4float %v
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|
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|
OpStore %gl_FragColor %17
|
|
|
|
OpReturn
|
|
|
|
OpFunctionEnd
|
|
|
|
%foo_ = OpFunction %void None %8
|
|
|
|
%18 = OpLabel
|
|
|
|
OpReturn
|
|
|
|
OpFunctionEnd
|
|
|
|
)";
|
|
|
|
|
|
|
|
SinglePassRunAndCheck<opt::LocalSingleBlockLoadStoreElimPass>(
|
|
|
|
assembly, assembly, false, true);
|
|
|
|
}
|
|
|
|
|
2017-07-18 20:42:51 +00:00
|
|
|
TEST_F(LocalSingleBlockLoadStoreElimTest, ElimIfCopyObjectInFunction) {
|
2017-05-18 20:51:55 +00:00
|
|
|
// Note: SPIR-V hand edited to insert CopyObject
|
|
|
|
//
|
|
|
|
// #version 140
|
|
|
|
//
|
|
|
|
// in vec4 BaseColor;
|
|
|
|
//
|
|
|
|
// void main()
|
|
|
|
// {
|
|
|
|
// vec4 v1 = BaseColor;
|
|
|
|
// gl_FragData[0] = v1;
|
|
|
|
// vec4 v2 = BaseColor * 0.5;
|
|
|
|
// gl_FragData[1] = v2;
|
|
|
|
// }
|
|
|
|
|
2017-07-18 20:42:51 +00:00
|
|
|
const std::string predefs =
|
2017-05-18 20:51:55 +00:00
|
|
|
R"(OpCapability Shader
|
|
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
|
|
OpMemoryModel Logical GLSL450
|
|
|
|
OpEntryPoint Fragment %main "main" %BaseColor %gl_FragData
|
|
|
|
OpExecutionMode %main OriginUpperLeft
|
|
|
|
OpSource GLSL 140
|
|
|
|
OpName %main "main"
|
|
|
|
OpName %v1 "v1"
|
|
|
|
OpName %BaseColor "BaseColor"
|
|
|
|
OpName %gl_FragData "gl_FragData"
|
|
|
|
OpName %v2 "v2"
|
|
|
|
%void = OpTypeVoid
|
|
|
|
%8 = 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
|
|
|
|
%uint = OpTypeInt 32 0
|
|
|
|
%uint_32 = OpConstant %uint 32
|
|
|
|
%_arr_v4float_uint_32 = OpTypeArray %v4float %uint_32
|
|
|
|
%_ptr_Output__arr_v4float_uint_32 = OpTypePointer Output %_arr_v4float_uint_32
|
|
|
|
%gl_FragData = OpVariable %_ptr_Output__arr_v4float_uint_32 Output
|
|
|
|
%int = OpTypeInt 32 1
|
|
|
|
%int_0 = OpConstant %int 0
|
|
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
|
|
%float_0_5 = OpConstant %float 0.5
|
|
|
|
%int_1 = OpConstant %int 1
|
2017-07-18 20:42:51 +00:00
|
|
|
)";
|
|
|
|
|
|
|
|
const std::string before =
|
|
|
|
R"(%main = OpFunction %void None %8
|
2017-05-18 20:51:55 +00:00
|
|
|
%22 = OpLabel
|
|
|
|
%v1 = OpVariable %_ptr_Function_v4float Function
|
|
|
|
%v2 = OpVariable %_ptr_Function_v4float Function
|
|
|
|
%23 = OpLoad %v4float %BaseColor
|
|
|
|
OpStore %v1 %23
|
|
|
|
%24 = OpLoad %v4float %v1
|
|
|
|
%25 = OpAccessChain %_ptr_Output_v4float %gl_FragData %int_0
|
|
|
|
OpStore %25 %24
|
|
|
|
%26 = OpLoad %v4float %BaseColor
|
|
|
|
%27 = OpVectorTimesScalar %v4float %26 %float_0_5
|
|
|
|
%28 = OpCopyObject %_ptr_Function_v4float %v2
|
|
|
|
OpStore %28 %27
|
|
|
|
%29 = OpLoad %v4float %28
|
|
|
|
%30 = OpAccessChain %_ptr_Output_v4float %gl_FragData %int_1
|
|
|
|
OpStore %30 %29
|
|
|
|
OpReturn
|
|
|
|
OpFunctionEnd
|
2017-07-18 20:42:51 +00:00
|
|
|
)";
|
|
|
|
|
|
|
|
const std::string after =
|
|
|
|
R"(%main = OpFunction %void None %8
|
|
|
|
%22 = OpLabel
|
|
|
|
%v1 = OpVariable %_ptr_Function_v4float Function
|
|
|
|
%v2 = OpVariable %_ptr_Function_v4float Function
|
|
|
|
%23 = OpLoad %v4float %BaseColor
|
|
|
|
%25 = OpAccessChain %_ptr_Output_v4float %gl_FragData %int_0
|
|
|
|
OpStore %25 %23
|
|
|
|
%26 = OpLoad %v4float %BaseColor
|
|
|
|
%27 = OpVectorTimesScalar %v4float %26 %float_0_5
|
|
|
|
%30 = OpAccessChain %_ptr_Output_v4float %gl_FragData %int_1
|
|
|
|
OpStore %30 %27
|
|
|
|
OpReturn
|
|
|
|
OpFunctionEnd
|
2017-05-18 20:51:55 +00:00
|
|
|
)";
|
|
|
|
|
|
|
|
SinglePassRunAndCheck<opt::LocalSingleBlockLoadStoreElimPass>(
|
2017-07-18 20:42:51 +00:00
|
|
|
predefs + before, predefs + after, true, true);
|
2017-05-18 20:51:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
// TODO(greg-lunarg): Add tests to verify handling of these cases:
|
|
|
|
//
|
|
|
|
// Other target variable types
|
|
|
|
// InBounds Access Chains
|
|
|
|
// Check for correctness in the presence of function calls
|
|
|
|
// Others?
|
|
|
|
|
|
|
|
} // anonymous namespace
|