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// Copyright (c) 2022 The Khronos Group Inc.
// Copyright (c) 2022 LunarG Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <unordered_set>
#include "gmock/gmock.h"
#include "test/opt/pass_fixture.h"
#include "test/opt/pass_utils.h"
namespace spvtools {
namespace opt {
namespace {
using ElimDeadOutputStoresTest = PassTest<::testing::Test>;
TEST_F(ElimDeadOutputStoresTest, VertMultipleLocations) {
// #version 450
//
// layout(location = 2) out Vertex
// {
// vec4 color0;
// vec4 color1;
// vec4 color2[3];
// } oVert;
//
// void main()
// {
// oVert.color0 = vec4(0.0,0.0,0.0,0.0);
// oVert.color1 = vec4(0.1,0.0,0.0,0.0);
// oVert.color2[0] = vec4(0.2,0.0,0.0,0.0);
// oVert.color2[1] = vec4(0.3,0.0,0.0,0.0);
// oVert.color2[2] = vec4(0.4,0.0,0.0,0.0);
// }
const std::string text = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Vertex %main "main" %oVert
OpSource GLSL 450
OpName %main "main"
OpName %Vertex "Vertex"
OpMemberName %Vertex 0 "color0"
OpMemberName %Vertex 1 "color1"
OpMemberName %Vertex 2 "color2"
OpName %oVert "oVert"
OpDecorate %Vertex Block
OpDecorate %oVert Location 2
%void = OpTypeVoid
%3 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%uint = OpTypeInt 32 0
%uint_3 = OpConstant %uint 3
%_arr_v4float_uint_3 = OpTypeArray %v4float %uint_3
%Vertex = OpTypeStruct %v4float %v4float %_arr_v4float_uint_3
%_ptr_Output_Vertex = OpTypePointer Output %Vertex
%oVert = OpVariable %_ptr_Output_Vertex Output
%int = OpTypeInt 32 1
%int_0 = OpConstant %int 0
%float_0 = OpConstant %float 0
%17 = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0
%_ptr_Output_v4float = OpTypePointer Output %v4float
%int_1 = OpConstant %int 1
%float_0_100000001 = OpConstant %float 0.100000001
%22 = OpConstantComposite %v4float %float_0_100000001 %float_0 %float_0 %float_0
%int_2 = OpConstant %int 2
%float_0_200000003 = OpConstant %float 0.200000003
%26 = OpConstantComposite %v4float %float_0_200000003 %float_0 %float_0 %float_0
%float_0_300000012 = OpConstant %float 0.300000012
%29 = OpConstantComposite %v4float %float_0_300000012 %float_0 %float_0 %float_0
%float_0_400000006 = OpConstant %float 0.400000006
%32 = OpConstantComposite %v4float %float_0_400000006 %float_0 %float_0 %float_0
%main = OpFunction %void None %3
%5 = OpLabel
%19 = OpAccessChain %_ptr_Output_v4float %oVert %int_0
OpStore %19 %17
;CHECK: OpStore %19 %17
%23 = OpAccessChain %_ptr_Output_v4float %oVert %int_1
OpStore %23 %22
;CHECK-NOT: OpStore %23 %22
%27 = OpAccessChain %_ptr_Output_v4float %oVert %int_2 %int_0
OpStore %27 %26
;CHECK-NOT: OpStore %27 %26
%30 = OpAccessChain %_ptr_Output_v4float %oVert %int_2 %int_1
OpStore %30 %29
;CHECK: OpStore %30 %29
%33 = OpAccessChain %_ptr_Output_v4float %oVert %int_2 %int_2
OpStore %33 %32
;CHECK-NOT: OpStore %33 %32
OpReturn
OpFunctionEnd
)";
SetTargetEnv(SPV_ENV_VULKAN_1_3);
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
std::unordered_set<uint32_t> live_inputs;
std::unordered_set<uint32_t> live_builtins;
live_inputs.insert(2);
live_inputs.insert(5);
SinglePassRunAndMatch<EliminateDeadOutputStoresPass>(text, true, &live_inputs,
&live_builtins);
}
TEST_F(ElimDeadOutputStoresTest, VertMatrix) {
// #version 450
//
// layout(location = 2) out Vertex
// {
// vec4 color0;
// vec4 color1;
// mat4 color2;
// mat4 color3;
// mat4 color4;
// } oVert;
//
// void main()
// {
// oVert.color0 = vec4(0.0,0.0,0.0,0.0);
// oVert.color1 = vec4(0.1,0.0,0.0,0.0);
// oVert.color2[2] = vec4(0.2,0.0,0.0,0.0);
// oVert.color3[1] = vec4(0.3,0.0,0.0,0.0);
// oVert.color4[0] = vec4(0.4,0.0,0.0,0.0);
// }
const std::string text = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Vertex %main "main" %oVert
OpSource GLSL 450
OpName %main "main"
OpName %Vertex "Vertex"
OpMemberName %Vertex 0 "color0"
OpMemberName %Vertex 1 "color1"
OpMemberName %Vertex 2 "color2"
OpMemberName %Vertex 3 "color3"
OpMemberName %Vertex 4 "color4"
OpName %oVert "oVert"
OpDecorate %Vertex Block
OpDecorate %oVert Location 2
%void = OpTypeVoid
%3 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%mat4v4float = OpTypeMatrix %v4float 4
%Vertex = OpTypeStruct %v4float %v4float %mat4v4float %mat4v4float %mat4v4float
%_ptr_Output_Vertex = OpTypePointer Output %Vertex
%oVert = OpVariable %_ptr_Output_Vertex Output
%int = OpTypeInt 32 1
%int_0 = OpConstant %int 0
%float_0 = OpConstant %float 0
%15 = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0
%_ptr_Output_v4float = OpTypePointer Output %v4float
%int_1 = OpConstant %int 1
%float_0_100000001 = OpConstant %float 0.100000001
%20 = OpConstantComposite %v4float %float_0_100000001 %float_0 %float_0 %float_0
%int_2 = OpConstant %int 2
%float_0_200000003 = OpConstant %float 0.200000003
%24 = OpConstantComposite %v4float %float_0_200000003 %float_0 %float_0 %float_0
%int_3 = OpConstant %int 3
%float_0_300000012 = OpConstant %float 0.300000012
%28 = OpConstantComposite %v4float %float_0_300000012 %float_0 %float_0 %float_0
%int_4 = OpConstant %int 4
%float_0_400000006 = OpConstant %float 0.400000006
%32 = OpConstantComposite %v4float %float_0_400000006 %float_0 %float_0 %float_0
%main = OpFunction %void None %3
%5 = OpLabel
%17 = OpAccessChain %_ptr_Output_v4float %oVert %int_0
OpStore %17 %15
; CHECK: OpStore %17 %15
%21 = OpAccessChain %_ptr_Output_v4float %oVert %int_1
OpStore %21 %20
; CHECK-NOT: OpStore %21 %20
%25 = OpAccessChain %_ptr_Output_v4float %oVert %int_2 %int_2
OpStore %25 %24
; CHECK-NOT: OpStore %25 %24
%29 = OpAccessChain %_ptr_Output_v4float %oVert %int_3 %int_1
OpStore %29 %28
; CHECK: OpStore %29 %28
%33 = OpAccessChain %_ptr_Output_v4float %oVert %int_4 %int_0
OpStore %33 %32
; CHECK-NOT: OpStore %33 %32
OpReturn
OpFunctionEnd
)";
SetTargetEnv(SPV_ENV_VULKAN_1_3);
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
std::unordered_set<uint32_t> live_inputs;
std::unordered_set<uint32_t> live_builtins;
live_inputs.insert(2);
live_inputs.insert(8);
live_inputs.insert(9);
live_inputs.insert(10);
live_inputs.insert(11);
SinglePassRunAndMatch<EliminateDeadOutputStoresPass>(text, true, &live_inputs,
&live_builtins);
}
TEST_F(ElimDeadOutputStoresTest, VertMemberLocs) {
// #version 450
//
// out Vertex
// {
// layout (location = 1) vec4 Cd;
// layout (location = 0) vec2 uv;
// } oVert;
//
// layout (location = 0) in vec3 P;
//
// void main()
// {
// oVert.uv = vec2(0.1, 0.7);
// oVert.Cd = vec4(1, 0.5, 0, 1);
// gl_Position = vec4(P, 1);
// }
const std::string text = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Vertex %main "main" %oVert %_ %P
OpSource GLSL 450
OpName %main "main"
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 %_ ""
OpName %P "P"
OpMemberDecorate %Vertex 0 Location 1
OpMemberDecorate %Vertex 1 Location 0
OpDecorate %Vertex Block
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
OpDecorate %P Location 0
%void = OpTypeVoid
%3 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%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_1 = OpConstant %int 1
%float_0_100000001 = OpConstant %float 0.100000001
%float_0_699999988 = OpConstant %float 0.699999988
%16 = OpConstantComposite %v2float %float_0_100000001 %float_0_699999988
%_ptr_Output_v2float = OpTypePointer Output %v2float
%int_0 = OpConstant %int 0
%float_1 = OpConstant %float 1
%float_0_5 = OpConstant %float 0.5
%float_0 = OpConstant %float 0
%23 = 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
%v3float = OpTypeVector %float 3
%_ptr_Input_v3float = OpTypePointer Input %v3float
%P = OpVariable %_ptr_Input_v3float Input
%main = OpFunction %void None %3
%5 = OpLabel
%18 = OpAccessChain %_ptr_Output_v2float %oVert %int_1
OpStore %18 %16
; CHECK-NOT: OpStore %18 %16
%25 = OpAccessChain %_ptr_Output_v4float %oVert %int_0
OpStore %25 %23
; CHECK: OpStore %25 %23
%35 = OpLoad %v3float %P
%36 = OpCompositeExtract %float %35 0
%37 = OpCompositeExtract %float %35 1
%38 = OpCompositeExtract %float %35 2
%39 = OpCompositeConstruct %v4float %36 %37 %38 %float_1
%40 = OpAccessChain %_ptr_Output_v4float %_ %int_0
OpStore %40 %39
OpReturn
OpFunctionEnd
)";
SetTargetEnv(SPV_ENV_VULKAN_1_3);
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
std::unordered_set<uint32_t> live_inputs;
std::unordered_set<uint32_t> live_builtins;
live_inputs.insert(1);
SinglePassRunAndMatch<EliminateDeadOutputStoresPass>(text, true, &live_inputs,
&live_builtins);
}
TEST_F(ElimDeadOutputStoresTest, ArrayedOutput) {
// Tests elimination of arrayed output as seen in Tesc shaders.
//
// #version 450
//
// layout (vertices = 4) out;
//
// layout (location = 0) in vec3 N[];
// layout (location = 1) in vec3 P[];
//
// layout (location = 5) out Vertex
// {
// vec4 c;
// vec3 n;
// vec3 f[10];
// } oVert[];
//
// void main()
// {
// oVert[gl_InvocationID].c = vec4(1, 0, 0, 1);
// oVert[gl_InvocationID].n = N[gl_InvocationID];
// oVert[gl_InvocationID].f[3] = vec3(0, 1, 0);
// vec4 worldSpacePos = vec4(P[gl_InvocationID], 1);
// gl_out[gl_InvocationID].gl_Position = worldSpacePos;
// }
const std::string text = R"(
OpCapability Tessellation
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint TessellationControl %main "main" %oVert %gl_InvocationID %N %P %gl_out
OpExecutionMode %main OutputVertices 4
OpSource GLSL 450
OpName %main "main"
OpName %Vertex "Vertex"
OpMemberName %Vertex 0 "c"
OpMemberName %Vertex 1 "n"
OpMemberName %Vertex 2 "f"
OpName %oVert "oVert"
OpName %gl_InvocationID "gl_InvocationID"
OpName %N "N"
OpName %P "P"
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 %gl_out "gl_out"
OpDecorate %Vertex Block
OpDecorate %oVert Location 5
OpDecorate %gl_InvocationID BuiltIn InvocationId
OpDecorate %N Location 0
OpDecorate %P Location 1
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
%uint = OpTypeInt 32 0
%uint_10 = OpConstant %uint 10
%_arr_v3float_uint_10 = OpTypeArray %v3float %uint_10
%Vertex = OpTypeStruct %v4float %v3float %_arr_v3float_uint_10
%uint_4 = OpConstant %uint 4
%_arr_Vertex_uint_4 = OpTypeArray %Vertex %uint_4
%_ptr_Output__arr_Vertex_uint_4 = OpTypePointer Output %_arr_Vertex_uint_4
%oVert = OpVariable %_ptr_Output__arr_Vertex_uint_4 Output
%int = OpTypeInt 32 1
%_ptr_Input_int = OpTypePointer Input %int
%gl_InvocationID = OpVariable %_ptr_Input_int Input
%int_0 = OpConstant %int 0
%float_1 = OpConstant %float 1
%float_0 = OpConstant %float 0
%24 = OpConstantComposite %v4float %float_1 %float_0 %float_0 %float_1
%_ptr_Output_v4float = OpTypePointer Output %v4float
%int_1 = OpConstant %int 1
%uint_32 = OpConstant %uint 32
%_arr_v3float_uint_32 = OpTypeArray %v3float %uint_32
%_ptr_Input__arr_v3float_uint_32 = OpTypePointer Input %_arr_v3float_uint_32
%N = OpVariable %_ptr_Input__arr_v3float_uint_32 Input
%_ptr_Input_v3float = OpTypePointer Input %v3float
%_ptr_Output_v3float = OpTypePointer Output %v3float
%int_2 = OpConstant %int 2
%int_3 = OpConstant %int 3
%42 = OpConstantComposite %v3float %float_0 %float_1 %float_0
%P = OpVariable %_ptr_Input__arr_v3float_uint_32 Input
%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
%_arr_gl_PerVertex_uint_4 = OpTypeArray %gl_PerVertex %uint_4
%_ptr_Output__arr_gl_PerVertex_uint_4 = OpTypePointer Output %_arr_gl_PerVertex_uint_4
%gl_out = OpVariable %_ptr_Output__arr_gl_PerVertex_uint_4 Output
%main = OpFunction %void None %3
%5 = OpLabel
%20 = OpLoad %int %gl_InvocationID
%26 = OpAccessChain %_ptr_Output_v4float %oVert %20 %int_0
OpStore %26 %24
; CHECK: OpStore %26 %24
%35 = OpAccessChain %_ptr_Input_v3float %N %20
%36 = OpLoad %v3float %35
%38 = OpAccessChain %_ptr_Output_v3float %oVert %20 %int_1
OpStore %38 %36
; CHECK-NOT: OpStore %38 %36
%43 = OpAccessChain %_ptr_Output_v3float %oVert %20 %int_2 %int_3
OpStore %43 %42
; CHECK: OpStore %43 %42
%48 = OpAccessChain %_ptr_Input_v3float %P %20
%49 = OpLoad %v3float %48
%50 = OpCompositeExtract %float %49 0
%51 = OpCompositeExtract %float %49 1
%52 = OpCompositeExtract %float %49 2
%53 = OpCompositeConstruct %v4float %50 %51 %52 %float_1
%62 = OpAccessChain %_ptr_Output_v4float %gl_out %20 %int_0
OpStore %62 %53
OpReturn
OpFunctionEnd
)";
SetTargetEnv(SPV_ENV_VULKAN_1_3);
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
std::unordered_set<uint32_t> live_inputs;
std::unordered_set<uint32_t> live_builtins;
live_inputs.insert(5);
live_inputs.insert(10);
SinglePassRunAndMatch<EliminateDeadOutputStoresPass>(text, true, &live_inputs,
&live_builtins);
}
TEST_F(ElimDeadOutputStoresTest, ArrayedOutputMemberLocs) {
// Tests elimination of member location with arrayed output as seen in
// Tesc shaders.
//
// #version 450
//
// layout (vertices = 4) out;
//
// layout (location = 0) in vec3 N[];
// layout (location = 1) in vec3 P[];
//
// out Vertex
// {
// layout (location = 1) vec4 c;
// layout (location = 3) vec3 n;
// layout (location = 5) vec3 f[10];
// } oVert[];
//
// void main()
// {
// oVert[gl_InvocationID].c = vec4(1, 0, 0, 1);
// oVert[gl_InvocationID].n = N[gl_InvocationID];
// oVert[gl_InvocationID].f[3] = vec3(0, 1, 0);
// vec4 worldSpacePos = vec4(P[gl_InvocationID], 1);
// gl_out[gl_InvocationID].gl_Position = worldSpacePos;
// }
const std::string text = R"(
OpCapability Tessellation
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint TessellationControl %main "main" %oVert %gl_InvocationID %N %P %gl_out
OpExecutionMode %main OutputVertices 4
OpSource GLSL 450
OpName %main "main"
OpName %Vertex "Vertex"
OpMemberName %Vertex 0 "c"
OpMemberName %Vertex 1 "n"
OpMemberName %Vertex 2 "f"
OpName %oVert "oVert"
OpName %gl_InvocationID "gl_InvocationID"
OpName %N "N"
OpName %P "P"
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 %gl_out "gl_out"
OpMemberDecorate %Vertex 0 Location 1
OpMemberDecorate %Vertex 1 Location 3
OpMemberDecorate %Vertex 2 Location 5
OpDecorate %Vertex Block
OpDecorate %gl_InvocationID BuiltIn InvocationId
OpDecorate %N Location 0
OpDecorate %P Location 1
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
%uint = OpTypeInt 32 0
%uint_10 = OpConstant %uint 10
%_arr_v3float_uint_10 = OpTypeArray %v3float %uint_10
%Vertex = OpTypeStruct %v4float %v3float %_arr_v3float_uint_10
%uint_4 = OpConstant %uint 4
%_arr_Vertex_uint_4 = OpTypeArray %Vertex %uint_4
%_ptr_Output__arr_Vertex_uint_4 = OpTypePointer Output %_arr_Vertex_uint_4
%oVert = OpVariable %_ptr_Output__arr_Vertex_uint_4 Output
%int = OpTypeInt 32 1
%_ptr_Input_int = OpTypePointer Input %int
%gl_InvocationID = OpVariable %_ptr_Input_int Input
%int_0 = OpConstant %int 0
%float_1 = OpConstant %float 1
%float_0 = OpConstant %float 0
%24 = OpConstantComposite %v4float %float_1 %float_0 %float_0 %float_1
%_ptr_Output_v4float = OpTypePointer Output %v4float
%int_1 = OpConstant %int 1
%uint_32 = OpConstant %uint 32
%_arr_v3float_uint_32 = OpTypeArray %v3float %uint_32
%_ptr_Input__arr_v3float_uint_32 = OpTypePointer Input %_arr_v3float_uint_32
%N = OpVariable %_ptr_Input__arr_v3float_uint_32 Input
%_ptr_Input_v3float = OpTypePointer Input %v3float
%_ptr_Output_v3float = OpTypePointer Output %v3float
%int_2 = OpConstant %int 2
%int_3 = OpConstant %int 3
%42 = OpConstantComposite %v3float %float_0 %float_1 %float_0
%P = OpVariable %_ptr_Input__arr_v3float_uint_32 Input
%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
%_arr_gl_PerVertex_uint_4 = OpTypeArray %gl_PerVertex %uint_4
%_ptr_Output__arr_gl_PerVertex_uint_4 = OpTypePointer Output %_arr_gl_PerVertex_uint_4
%gl_out = OpVariable %_ptr_Output__arr_gl_PerVertex_uint_4 Output
%main = OpFunction %void None %3
%5 = OpLabel
%20 = OpLoad %int %gl_InvocationID
%26 = OpAccessChain %_ptr_Output_v4float %oVert %20 %int_0
OpStore %26 %24
;CHECK: OpStore %26 %24
%35 = OpAccessChain %_ptr_Input_v3float %N %20
%36 = OpLoad %v3float %35
%38 = OpAccessChain %_ptr_Output_v3float %oVert %20 %int_1
OpStore %38 %36
;CHECK-NOT: OpStore %38 %36
%43 = OpAccessChain %_ptr_Output_v3float %oVert %20 %int_2 %int_3
OpStore %43 %42
;CHECK: OpStore %43 %42
%48 = OpAccessChain %_ptr_Input_v3float %P %20
%49 = OpLoad %v3float %48
%50 = OpCompositeExtract %float %49 0
%51 = OpCompositeExtract %float %49 1
%52 = OpCompositeExtract %float %49 2
%53 = OpCompositeConstruct %v4float %50 %51 %52 %float_1
%62 = OpAccessChain %_ptr_Output_v4float %gl_out %20 %int_0
OpStore %62 %53
OpReturn
OpFunctionEnd
)";
SetTargetEnv(SPV_ENV_VULKAN_1_3);
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
std::unordered_set<uint32_t> live_inputs;
std::unordered_set<uint32_t> live_builtins;
live_inputs.insert(1);
live_inputs.insert(8);
SinglePassRunAndMatch<EliminateDeadOutputStoresPass>(text, true, &live_inputs,
&live_builtins);
}
TEST_F(ElimDeadOutputStoresTest, ScalarBuiltins) {
// Tests elimination of scalar builtins as seen in vert shaders.
//
// #version 460
//
// layout (location = 0) in vec3 P;
//
// void main()
// {
// gl_Position = vec4(P, 1.0);
// gl_PointSize = 1.0;
// }
const std::string text = R"(
OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Vertex %main "main" %_ %P
OpSource GLSL 460
OpName %main "main"
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 %_ ""
OpName %P "P"
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
OpDecorate %P Location 0
%void = OpTypeVoid
%3 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%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
%int = OpTypeInt 32 1
%int_0 = OpConstant %int 0
%v3float = OpTypeVector %float 3
%_ptr_Input_v3float = OpTypePointer Input %v3float
%P = OpVariable %_ptr_Input_v3float Input
%float_1 = OpConstant %float 1
%_ptr_Output_v4float = OpTypePointer Output %v4float
%int_1 = OpConstant %int 1
%_ptr_Output_float = OpTypePointer Output %float
%main = OpFunction %void None %3
%5 = OpLabel
%19 = OpLoad %v3float %P
%21 = OpCompositeExtract %float %19 0
%22 = OpCompositeExtract %float %19 1
%23 = OpCompositeExtract %float %19 2
%24 = OpCompositeConstruct %v4float %21 %22 %23 %float_1
%26 = OpAccessChain %_ptr_Output_v4float %_ %int_0
OpStore %26 %24
;CHECK: OpStore %26 %24
%29 = OpAccessChain %_ptr_Output_float %_ %int_1
OpStore %29 %float_1
;CHECK-NOT: OpStore %29 %float_1
OpReturn
OpFunctionEnd
)";
SetTargetEnv(SPV_ENV_VULKAN_1_3);
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
std::unordered_set<uint32_t> live_inputs;
std::unordered_set<uint32_t> live_builtins;
// Omit spv::BuiltIn::PointSize
live_builtins.insert((uint32_t)spv::BuiltIn::ClipDistance);
live_builtins.insert((uint32_t)spv::BuiltIn::CullDistance);
SinglePassRunAndMatch<EliminateDeadOutputStoresPass>(text, true, &live_inputs,
&live_builtins);
}
TEST_F(ElimDeadOutputStoresTest, ArrayedBuiltins) {
// Tests elimination of arrayed builtins as seen in geom, tesc, and tese
// shaders.
//
// #version 460
//
// layout(triangle_strip, max_vertices = 3) out;
// layout(triangles) in;
//
// void main()
// {
// for (int i = 0; i < 3; i++)
// {
// gl_Position = gl_in[i].gl_Position;
// gl_PointSize = gl_in[i].gl_PointSize;
//
// EmitVertex();
// }
//
// EndPrimitive();
// }
const std::string text = R"(
OpCapability Geometry
OpCapability GeometryPointSize
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Geometry %main "main" %_ %gl_in
OpExecutionMode %main Triangles
OpExecutionMode %main Invocations 1
OpExecutionMode %main OutputTriangleStrip
OpExecutionMode %main OutputVertices 3
OpSource GLSL 460
OpName %main "main"
OpName %i "i"
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 %_ ""
OpName %gl_PerVertex_0 "gl_PerVertex"
OpMemberName %gl_PerVertex_0 0 "gl_Position"
OpMemberName %gl_PerVertex_0 1 "gl_PointSize"
OpMemberName %gl_PerVertex_0 2 "gl_ClipDistance"
OpMemberName %gl_PerVertex_0 3 "gl_CullDistance"
OpName %gl_in "gl_in"
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
OpMemberDecorate %gl_PerVertex_0 0 BuiltIn Position
OpMemberDecorate %gl_PerVertex_0 1 BuiltIn PointSize
OpMemberDecorate %gl_PerVertex_0 2 BuiltIn ClipDistance
OpMemberDecorate %gl_PerVertex_0 3 BuiltIn CullDistance
OpDecorate %gl_PerVertex_0 Block
%void = OpTypeVoid
%3 = OpTypeFunction %void
%int = OpTypeInt 32 1
%_ptr_Function_int = OpTypePointer Function %int
%int_0 = OpConstant %int 0
%int_3 = OpConstant %int 3
%bool = OpTypeBool
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%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
%gl_PerVertex_0 = OpTypeStruct %v4float %float %_arr_float_uint_1 %_arr_float_uint_1
%uint_3 = OpConstant %uint 3
%_arr_gl_PerVertex_0_uint_3 = OpTypeArray %gl_PerVertex_0 %uint_3
%_ptr_Input__arr_gl_PerVertex_0_uint_3 = OpTypePointer Input %_arr_gl_PerVertex_0_uint_3
%gl_in = OpVariable %_ptr_Input__arr_gl_PerVertex_0_uint_3 Input
%_ptr_Input_v4float = OpTypePointer Input %v4float
%_ptr_Output_v4float = OpTypePointer Output %v4float
%int_1 = OpConstant %int 1
%_ptr_Input_float = OpTypePointer Input %float
%_ptr_Output_float = OpTypePointer Output %float
%main = OpFunction %void None %3
%5 = OpLabel
%i = OpVariable %_ptr_Function_int Function
OpStore %i %int_0
OpBranch %10
%10 = OpLabel
OpLoopMerge %12 %13 None
OpBranch %14
%14 = OpLabel
%15 = OpLoad %int %i
%18 = OpSLessThan %bool %15 %int_3
OpBranchConditional %18 %11 %12
%11 = OpLabel
%32 = OpLoad %int %i
%34 = OpAccessChain %_ptr_Input_v4float %gl_in %32 %int_0
%35 = OpLoad %v4float %34
%37 = OpAccessChain %_ptr_Output_v4float %_ %int_0
OpStore %37 %35
;CHECK: OpStore %37 %35
%39 = OpLoad %int %i
%41 = OpAccessChain %_ptr_Input_float %gl_in %39 %int_1
%42 = OpLoad %float %41
%44 = OpAccessChain %_ptr_Output_float %_ %int_1
OpStore %44 %42
;CHECK-NOT: OpStore %44 %42
OpEmitVertex
OpBranch %13
%13 = OpLabel
%45 = OpLoad %int %i
%46 = OpIAdd %int %45 %int_1
OpStore %i %46
OpBranch %10
%12 = OpLabel
OpEndPrimitive
OpReturn
OpFunctionEnd
)";
SetTargetEnv(SPV_ENV_VULKAN_1_3);
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
std::unordered_set<uint32_t> live_inputs;
std::unordered_set<uint32_t> live_builtins;
// Omit spv::BuiltIn::PointSize
live_builtins.insert((uint32_t)spv::BuiltIn::ClipDistance);
live_builtins.insert((uint32_t)spv::BuiltIn::CullDistance);
SinglePassRunAndMatch<EliminateDeadOutputStoresPass>(text, true, &live_inputs,
&live_builtins);
}
TEST_F(ElimDeadOutputStoresTest, ArrayedOutputPatchLocs) {
// Tests elimination of location with arrayed patch output as seen in
// Tesc shaders.
//
// #version 450 core
//
// layout(vertices = 4) out;
//
// layout(location=0) patch out float patchOut0[2];
// layout(location=2) patch out float patchOut1[2];
//
// void main()
// {
// patchOut0[1] = 0.0; // Dead loc 1
// patchOut1[1] = 1.0; // Live loc 3
// }
const std::string text = R"(
OpCapability Tessellation
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint TessellationControl %main "main" %patchOut0 %patchOut1
OpExecutionMode %main OutputVertices 4
OpSource GLSL 450
OpName %main "main"
OpName %patchOut0 "patchOut0"
OpName %patchOut1 "patchOut1"
OpDecorate %patchOut0 Patch
OpDecorate %patchOut0 Location 0
OpDecorate %patchOut1 Patch
OpDecorate %patchOut1 Location 2
%void = OpTypeVoid
%3 = OpTypeFunction %void
%float = OpTypeFloat 32
%uint = OpTypeInt 32 0
%uint_2 = OpConstant %uint 2
%_arr_float_uint_2 = OpTypeArray %float %uint_2
%_ptr_Output__arr_float_uint_2 = OpTypePointer Output %_arr_float_uint_2
%patchOut0 = OpVariable %_ptr_Output__arr_float_uint_2 Output
%int = OpTypeInt 32 1
%int_1 = OpConstant %int 1
%float_0 = OpConstant %float 0
%_ptr_Output_float = OpTypePointer Output %float
%patchOut1 = OpVariable %_ptr_Output__arr_float_uint_2 Output
%float_1 = OpConstant %float 1
%main = OpFunction %void None %3
%5 = OpLabel
%16 = OpAccessChain %_ptr_Output_float %patchOut0 %int_1
OpStore %16 %float_0
;CHECK-NOT: OpStore %16 %float_0
%19 = OpAccessChain %_ptr_Output_float %patchOut1 %int_1
OpStore %19 %float_1
;CHECK: OpStore %19 %float_1
OpReturn
OpFunctionEnd
)";
SetTargetEnv(SPV_ENV_VULKAN_1_3);
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
std::unordered_set<uint32_t> live_inputs;
std::unordered_set<uint32_t> live_builtins;
live_inputs.insert(3);
SinglePassRunAndMatch<EliminateDeadOutputStoresPass>(text, true, &live_inputs,
&live_builtins);
}
TEST_F(ElimDeadOutputStoresTest, VertMultipleLocationsF16) {
// #version 450
//
// layout(location = 2) out Vertex
// {
// f16vec4 color0;
// f16vec4 color1;
// f16vec4 color2[3];
// } oVert;
//
// void main()
// {
// oVert.color0 = f16vec4(0.0,0.0,0.0,0.0);
// oVert.color1 = f16vec4(0.1,0.0,0.0,0.0);
// oVert.color2[0] = f16vec4(0.2,0.0,0.0,0.0);
// oVert.color2[1] = f16vec4(0.3,0.0,0.0,0.0);
// oVert.color2[2] = f16vec4(0.4,0.0,0.0,0.0);
// }
const std::string text = R"(
OpCapability Shader
OpCapability Float16
OpCapability StorageInputOutput16
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Vertex %main "main" %oVert
OpSource GLSL 450
OpName %main "main"
OpName %Vertex "Vertex"
OpMemberName %Vertex 0 "color0"
OpMemberName %Vertex 1 "color1"
OpMemberName %Vertex 2 "color2"
OpName %oVert "oVert"
OpDecorate %Vertex Block
OpDecorate %oVert Location 2
%void = OpTypeVoid
%3 = OpTypeFunction %void
%half = OpTypeFloat 32
%v4half = OpTypeVector %half 4
%uint = OpTypeInt 32 0
%uint_3 = OpConstant %uint 3
%_arr_v4half_uint_3 = OpTypeArray %v4half %uint_3
%Vertex = OpTypeStruct %v4half %v4half %_arr_v4half_uint_3
%_ptr_Output_Vertex = OpTypePointer Output %Vertex
%oVert = OpVariable %_ptr_Output_Vertex Output
%int = OpTypeInt 32 1
%int_0 = OpConstant %int 0
%half_0 = OpConstant %half 0
%17 = OpConstantComposite %v4half %half_0 %half_0 %half_0 %half_0
%_ptr_Output_v4half = OpTypePointer Output %v4half
%int_1 = OpConstant %int 1
%half_0_100000001 = OpConstant %half 0.100000001
%22 = OpConstantComposite %v4half %half_0_100000001 %half_0 %half_0 %half_0
%int_2 = OpConstant %int 2
%half_0_200000003 = OpConstant %half 0.200000003
%26 = OpConstantComposite %v4half %half_0_200000003 %half_0 %half_0 %half_0
%half_0_300000012 = OpConstant %half 0.300000012
%29 = OpConstantComposite %v4half %half_0_300000012 %half_0 %half_0 %half_0
%half_0_400000006 = OpConstant %half 0.400000006
%32 = OpConstantComposite %v4half %half_0_400000006 %half_0 %half_0 %half_0
%main = OpFunction %void None %3
%5 = OpLabel
%19 = OpAccessChain %_ptr_Output_v4half %oVert %int_0
OpStore %19 %17
;CHECK: OpStore %19 %17
%23 = OpAccessChain %_ptr_Output_v4half %oVert %int_1
OpStore %23 %22
;CHECK-NOT: OpStore %23 %22
%27 = OpAccessChain %_ptr_Output_v4half %oVert %int_2 %int_0
OpStore %27 %26
;CHECK-NOT: OpStore %27 %26
%30 = OpAccessChain %_ptr_Output_v4half %oVert %int_2 %int_1
OpStore %30 %29
;CHECK: OpStore %30 %29
%33 = OpAccessChain %_ptr_Output_v4half %oVert %int_2 %int_2
OpStore %33 %32
;CHECK-NOT: OpStore %33 %32
OpReturn
OpFunctionEnd
)";
SetTargetEnv(SPV_ENV_VULKAN_1_3);
SetAssembleOptions(SPV_TEXT_TO_BINARY_OPTION_PRESERVE_NUMERIC_IDS);
std::unordered_set<uint32_t> live_inputs;
std::unordered_set<uint32_t> live_builtins;
live_inputs.insert(2);
live_inputs.insert(5);
SinglePassRunAndMatch<EliminateDeadOutputStoresPass>(text, true, &live_inputs,
&live_builtins);
}
} // namespace
} // namespace opt
} // namespace spvtools