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// Copyright (c) 2017 Valve Corporation
// Copyright (c) 2017 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 <memory>
#include <string>
#include <vector>
#include "test/opt/pass_fixture.h"
#include "test/opt/pass_utils.h"
namespace spvtools {
namespace opt {
namespace {
using InlineTest = PassTest<::testing::Test>;
TEST_F(InlineTest, Simple) {
// #version 140
//
// in vec4 BaseColor;
//
// float foo(vec4 bar)
// {
// return bar.x + bar.y;
// }
//
// void main()
// {
// vec4 color = vec4(foo(BaseColor));
// gl_FragColor = color;
// }
const std::vector<const char*> predefs = {
// clang-format off
"OpCapability Shader",
"%1 = OpExtInstImport \"GLSL.std.450\"",
"OpMemoryModel Logical GLSL450",
"OpEntryPoint Fragment %main \"main\" %BaseColor %gl_FragColor",
"OpExecutionMode %main OriginUpperLeft",
"OpSource GLSL 140",
"OpName %main \"main\"",
"OpName %foo_vf4_ \"foo(vf4;\"",
"OpName %bar \"bar\"",
"OpName %color \"color\"",
"OpName %BaseColor \"BaseColor\"",
"OpName %param \"param\"",
"OpName %gl_FragColor \"gl_FragColor\"",
"%void = OpTypeVoid",
"%10 = OpTypeFunction %void",
"%float = OpTypeFloat 32",
"%v4float = OpTypeVector %float 4",
"%_ptr_Function_v4float = OpTypePointer Function %v4float",
"%14 = OpTypeFunction %float %_ptr_Function_v4float",
"%uint = OpTypeInt 32 0",
"%uint_0 = OpConstant %uint 0",
"%_ptr_Function_float = OpTypePointer Function %float",
"%uint_1 = OpConstant %uint 1",
"%_ptr_Input_v4float = OpTypePointer Input %v4float",
"%BaseColor = OpVariable %_ptr_Input_v4float Input",
"%_ptr_Output_v4float = OpTypePointer Output %v4float",
"%gl_FragColor = OpVariable %_ptr_Output_v4float Output",
// clang-format on
};
const std::vector<const char*> nonEntryFuncs = {
// clang-format off
"%foo_vf4_ = OpFunction %float None %14",
"%bar = OpFunctionParameter %_ptr_Function_v4float",
"%26 = OpLabel",
"%27 = OpAccessChain %_ptr_Function_float %bar %uint_0",
"%28 = OpLoad %float %27",
"%29 = OpAccessChain %_ptr_Function_float %bar %uint_1",
"%30 = OpLoad %float %29",
"%31 = OpFAdd %float %28 %30",
"OpReturnValue %31",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> before = {
// clang-format off
"%main = OpFunction %void None %10",
"%21 = OpLabel",
"%color = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_v4float Function",
"%22 = OpLoad %v4float %BaseColor",
"OpStore %param %22",
"%23 = OpFunctionCall %float %foo_vf4_ %param",
"%24 = OpCompositeConstruct %v4float %23 %23 %23 %23",
"OpStore %color %24",
"%25 = OpLoad %v4float %color",
"OpStore %gl_FragColor %25",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> after = {
// clang-format off
"%main = OpFunction %void None %10",
"%21 = OpLabel",
"%32 = OpVariable %_ptr_Function_float Function",
"%color = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_v4float Function",
"%22 = OpLoad %v4float %BaseColor",
"OpStore %param %22",
"%33 = OpAccessChain %_ptr_Function_float %param %uint_0",
"%34 = OpLoad %float %33",
"%35 = OpAccessChain %_ptr_Function_float %param %uint_1",
"%36 = OpLoad %float %35",
"%37 = OpFAdd %float %34 %36",
"OpStore %32 %37",
"%23 = OpLoad %float %32",
"%24 = OpCompositeConstruct %v4float %23 %23 %23 %23",
"OpStore %color %24",
"%25 = OpLoad %v4float %color",
"OpStore %gl_FragColor %25",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
SinglePassRunAndCheck<InlineExhaustivePass>(
JoinAllInsts(Concat(Concat(predefs, before), nonEntryFuncs)),
JoinAllInsts(Concat(Concat(predefs, after), nonEntryFuncs)),
/* skip_nop = */ false, /* do_validate = */ true);
}
TEST_F(InlineTest, Nested) {
// #version 140
//
// in vec4 BaseColor;
//
// float foo2(float f, float f2)
// {
// return f * f2;
// }
//
// float foo(vec4 bar)
// {
// return foo2(bar.x + bar.y, bar.z);
// }
//
// void main()
// {
// vec4 color = vec4(foo(BaseColor));
// gl_FragColor = color;
// }
const std::vector<const char*> predefs = {
// clang-format off
"OpCapability Shader",
"%1 = OpExtInstImport \"GLSL.std.450\"",
"OpMemoryModel Logical GLSL450",
"OpEntryPoint Fragment %main \"main\" %BaseColor %gl_FragColor",
"OpExecutionMode %main OriginUpperLeft",
"OpSource GLSL 140",
"OpName %main \"main\"",
"OpName %foo2_f1_f1_ \"foo2(f1;f1;\"",
"OpName %f \"f\"",
"OpName %f2 \"f2\"",
"OpName %foo_vf4_ \"foo(vf4;\"",
"OpName %bar \"bar\"",
"OpName %param \"param\"",
"OpName %param_0 \"param\"",
"OpName %color \"color\"",
"OpName %BaseColor \"BaseColor\"",
"OpName %param_1 \"param\"",
"OpName %gl_FragColor \"gl_FragColor\"",
"%void = OpTypeVoid",
"%15 = OpTypeFunction %void",
"%float = OpTypeFloat 32",
"%_ptr_Function_float = OpTypePointer Function %float",
"%18 = OpTypeFunction %float %_ptr_Function_float %_ptr_Function_float",
"%v4float = OpTypeVector %float 4",
"%_ptr_Function_v4float = OpTypePointer Function %v4float",
"%21 = OpTypeFunction %float %_ptr_Function_v4float",
"%uint = OpTypeInt 32 0",
"%uint_0 = OpConstant %uint 0",
"%uint_1 = OpConstant %uint 1",
"%uint_2 = OpConstant %uint 2",
"%_ptr_Input_v4float = OpTypePointer Input %v4float",
"%BaseColor = OpVariable %_ptr_Input_v4float Input",
"%_ptr_Output_v4float = OpTypePointer Output %v4float",
"%gl_FragColor = OpVariable %_ptr_Output_v4float Output",
// clang-format on
};
const std::vector<const char*> nonEntryFuncs = {
// clang-format off
"%foo2_f1_f1_ = OpFunction %float None %18",
"%f = OpFunctionParameter %_ptr_Function_float",
"%f2 = OpFunctionParameter %_ptr_Function_float",
"%33 = OpLabel",
"%34 = OpLoad %float %f",
"%35 = OpLoad %float %f2",
"%36 = OpFMul %float %34 %35",
"OpReturnValue %36",
"OpFunctionEnd",
"%foo_vf4_ = OpFunction %float None %21",
"%bar = OpFunctionParameter %_ptr_Function_v4float",
"%37 = OpLabel",
"%param = OpVariable %_ptr_Function_float Function",
"%param_0 = OpVariable %_ptr_Function_float Function",
"%38 = OpAccessChain %_ptr_Function_float %bar %uint_0",
"%39 = OpLoad %float %38",
"%40 = OpAccessChain %_ptr_Function_float %bar %uint_1",
"%41 = OpLoad %float %40",
"%42 = OpFAdd %float %39 %41",
"OpStore %param %42",
"%43 = OpAccessChain %_ptr_Function_float %bar %uint_2",
"%44 = OpLoad %float %43",
"OpStore %param_0 %44",
"%45 = OpFunctionCall %float %foo2_f1_f1_ %param %param_0",
"OpReturnValue %45",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> before = {
// clang-format off
"%main = OpFunction %void None %15",
"%28 = OpLabel",
"%color = OpVariable %_ptr_Function_v4float Function",
"%param_1 = OpVariable %_ptr_Function_v4float Function",
"%29 = OpLoad %v4float %BaseColor",
"OpStore %param_1 %29",
"%30 = OpFunctionCall %float %foo_vf4_ %param_1",
"%31 = OpCompositeConstruct %v4float %30 %30 %30 %30",
"OpStore %color %31",
"%32 = OpLoad %v4float %color",
"OpStore %gl_FragColor %32",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> after = {
// clang-format off
"%main = OpFunction %void None %15",
"%28 = OpLabel",
"%57 = OpVariable %_ptr_Function_float Function",
"%46 = OpVariable %_ptr_Function_float Function",
"%47 = OpVariable %_ptr_Function_float Function",
"%48 = OpVariable %_ptr_Function_float Function",
"%color = OpVariable %_ptr_Function_v4float Function",
"%param_1 = OpVariable %_ptr_Function_v4float Function",
"%29 = OpLoad %v4float %BaseColor",
"OpStore %param_1 %29",
"%49 = OpAccessChain %_ptr_Function_float %param_1 %uint_0",
"%50 = OpLoad %float %49",
"%51 = OpAccessChain %_ptr_Function_float %param_1 %uint_1",
"%52 = OpLoad %float %51",
"%53 = OpFAdd %float %50 %52",
"OpStore %46 %53",
"%54 = OpAccessChain %_ptr_Function_float %param_1 %uint_2",
"%55 = OpLoad %float %54",
"OpStore %47 %55",
"%58 = OpLoad %float %46",
"%59 = OpLoad %float %47",
"%60 = OpFMul %float %58 %59",
"OpStore %57 %60",
"%56 = OpLoad %float %57",
"OpStore %48 %56",
"%30 = OpLoad %float %48",
"%31 = OpCompositeConstruct %v4float %30 %30 %30 %30",
"OpStore %color %31",
"%32 = OpLoad %v4float %color",
"OpStore %gl_FragColor %32",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
SinglePassRunAndCheck<InlineExhaustivePass>(
JoinAllInsts(Concat(Concat(predefs, before), nonEntryFuncs)),
JoinAllInsts(Concat(Concat(predefs, after), nonEntryFuncs)),
/* skip_nop = */ false, /* do_validate = */ true);
}
TEST_F(InlineTest, InOutParameter) {
// #version 400
//
// in vec4 Basecolor;
//
// void foo(inout vec4 bar)
// {
// bar.z = bar.x + bar.y;
// }
//
// void main()
// {
// vec4 b = Basecolor;
// foo(b);
// vec4 color = vec4(b.z);
// gl_FragColor = color;
// }
const std::vector<const char*> predefs = {
// clang-format off
"OpCapability Shader",
"%1 = OpExtInstImport \"GLSL.std.450\"",
"OpMemoryModel Logical GLSL450",
"OpEntryPoint Fragment %main \"main\" %Basecolor %gl_FragColor",
"OpExecutionMode %main OriginUpperLeft",
"OpSource GLSL 400",
"OpName %main \"main\"",
"OpName %foo_vf4_ \"foo(vf4;\"",
"OpName %bar \"bar\"",
"OpName %b \"b\"",
"OpName %Basecolor \"Basecolor\"",
"OpName %param \"param\"",
"OpName %color \"color\"",
"OpName %gl_FragColor \"gl_FragColor\"",
"%void = OpTypeVoid",
"%11 = OpTypeFunction %void",
"%float = OpTypeFloat 32",
"%v4float = OpTypeVector %float 4",
"%_ptr_Function_v4float = OpTypePointer Function %v4float",
"%15 = OpTypeFunction %void %_ptr_Function_v4float",
"%uint = OpTypeInt 32 0",
"%uint_0 = OpConstant %uint 0",
"%_ptr_Function_float = OpTypePointer Function %float",
"%uint_1 = OpConstant %uint 1",
"%uint_2 = OpConstant %uint 2",
"%_ptr_Input_v4float = OpTypePointer Input %v4float",
"%Basecolor = OpVariable %_ptr_Input_v4float Input",
"%_ptr_Output_v4float = OpTypePointer Output %v4float",
"%gl_FragColor = OpVariable %_ptr_Output_v4float Output",
// clang-format on
};
const std::vector<const char*> nonEntryFuncs = {
// clang-format off
"%foo_vf4_ = OpFunction %void None %15",
"%bar = OpFunctionParameter %_ptr_Function_v4float",
"%32 = OpLabel",
"%33 = OpAccessChain %_ptr_Function_float %bar %uint_0",
"%34 = OpLoad %float %33",
"%35 = OpAccessChain %_ptr_Function_float %bar %uint_1",
"%36 = OpLoad %float %35",
"%37 = OpFAdd %float %34 %36",
"%38 = OpAccessChain %_ptr_Function_float %bar %uint_2",
"OpStore %38 %37",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> before = {
// clang-format off
"%main = OpFunction %void None %11",
"%23 = OpLabel",
"%b = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_v4float Function",
"%color = OpVariable %_ptr_Function_v4float Function",
"%24 = OpLoad %v4float %Basecolor",
"OpStore %b %24",
"%25 = OpLoad %v4float %b",
"OpStore %param %25",
"%26 = OpFunctionCall %void %foo_vf4_ %param",
"%27 = OpLoad %v4float %param",
"OpStore %b %27",
"%28 = OpAccessChain %_ptr_Function_float %b %uint_2",
"%29 = OpLoad %float %28",
"%30 = OpCompositeConstruct %v4float %29 %29 %29 %29",
"OpStore %color %30",
"%31 = OpLoad %v4float %color",
"OpStore %gl_FragColor %31",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> after = {
// clang-format off
"%main = OpFunction %void None %11",
"%23 = OpLabel",
"%b = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_v4float Function",
"%color = OpVariable %_ptr_Function_v4float Function",
"%24 = OpLoad %v4float %Basecolor",
"OpStore %b %24",
"%25 = OpLoad %v4float %b",
"OpStore %param %25",
"%39 = OpAccessChain %_ptr_Function_float %param %uint_0",
"%40 = OpLoad %float %39",
"%41 = OpAccessChain %_ptr_Function_float %param %uint_1",
"%42 = OpLoad %float %41",
"%43 = OpFAdd %float %40 %42",
"%44 = OpAccessChain %_ptr_Function_float %param %uint_2",
"OpStore %44 %43",
"%27 = OpLoad %v4float %param",
"OpStore %b %27",
"%28 = OpAccessChain %_ptr_Function_float %b %uint_2",
"%29 = OpLoad %float %28",
"%30 = OpCompositeConstruct %v4float %29 %29 %29 %29",
"OpStore %color %30",
"%31 = OpLoad %v4float %color",
"OpStore %gl_FragColor %31",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
SinglePassRunAndCheck<InlineExhaustivePass>(
JoinAllInsts(Concat(Concat(predefs, before), nonEntryFuncs)),
JoinAllInsts(Concat(Concat(predefs, after), nonEntryFuncs)),
/* skip_nop = */ false, /* do_validate = */ true);
}
TEST_F(InlineTest, BranchInCallee) {
// #version 140
//
// in vec4 BaseColor;
//
// float foo(vec4 bar)
// {
// float r = bar.x;
// if (r < 0.0)
// r = -r;
// return r;
// }
//
// void main()
// {
// vec4 color = vec4(foo(BaseColor));
//
// gl_FragColor = color;
// }
const std::vector<const char*> predefs = {
// clang-format off
"OpCapability Shader",
"%1 = OpExtInstImport \"GLSL.std.450\"",
"OpMemoryModel Logical GLSL450",
"OpEntryPoint Fragment %main \"main\" %BaseColor %gl_FragColor",
"OpExecutionMode %main OriginUpperLeft",
"OpSource GLSL 140",
"OpName %main \"main\"",
"OpName %foo_vf4_ \"foo(vf4;\"",
"OpName %bar \"bar\"",
"OpName %r \"r\"",
"OpName %color \"color\"",
"OpName %BaseColor \"BaseColor\"",
"OpName %param \"param\"",
"OpName %gl_FragColor \"gl_FragColor\"",
"%void = OpTypeVoid",
"%11 = OpTypeFunction %void",
"%float = OpTypeFloat 32",
"%v4float = OpTypeVector %float 4",
"%_ptr_Function_v4float = OpTypePointer Function %v4float",
"%15 = OpTypeFunction %float %_ptr_Function_v4float",
"%_ptr_Function_float = OpTypePointer Function %float",
"%uint = OpTypeInt 32 0",
"%uint_0 = OpConstant %uint 0",
"%float_0 = OpConstant %float 0",
"%bool = OpTypeBool",
"%_ptr_Input_v4float = OpTypePointer Input %v4float",
"%BaseColor = OpVariable %_ptr_Input_v4float Input",
"%_ptr_Output_v4float = OpTypePointer Output %v4float",
"%gl_FragColor = OpVariable %_ptr_Output_v4float Output",
// clang-format on
};
const std::vector<const char*> nonEntryFuncs = {
// clang-format off
"%foo_vf4_ = OpFunction %float None %15",
"%bar = OpFunctionParameter %_ptr_Function_v4float",
"%28 = OpLabel",
"%r = OpVariable %_ptr_Function_float Function",
"%29 = OpAccessChain %_ptr_Function_float %bar %uint_0",
"%30 = OpLoad %float %29",
"OpStore %r %30",
"%31 = OpLoad %float %r",
"%32 = OpFOrdLessThan %bool %31 %float_0",
"OpSelectionMerge %33 None",
"OpBranchConditional %32 %34 %33",
"%34 = OpLabel",
"%35 = OpLoad %float %r",
"%36 = OpFNegate %float %35",
"OpStore %r %36",
"OpBranch %33",
"%33 = OpLabel",
"%37 = OpLoad %float %r",
"OpReturnValue %37",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> before = {
// clang-format off
"%main = OpFunction %void None %11",
"%23 = OpLabel",
"%color = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_v4float Function",
"%24 = OpLoad %v4float %BaseColor",
"OpStore %param %24",
"%25 = OpFunctionCall %float %foo_vf4_ %param",
"%26 = OpCompositeConstruct %v4float %25 %25 %25 %25",
"OpStore %color %26",
"%27 = OpLoad %v4float %color",
"OpStore %gl_FragColor %27",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> after = {
// clang-format off
"%main = OpFunction %void None %11",
"%23 = OpLabel",
"%38 = OpVariable %_ptr_Function_float Function",
"%39 = OpVariable %_ptr_Function_float Function",
"%color = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_v4float Function",
"%24 = OpLoad %v4float %BaseColor",
"OpStore %param %24",
"%40 = OpAccessChain %_ptr_Function_float %param %uint_0",
"%41 = OpLoad %float %40",
"OpStore %38 %41",
"%42 = OpLoad %float %38",
"%43 = OpFOrdLessThan %bool %42 %float_0",
"OpSelectionMerge %44 None",
"OpBranchConditional %43 %45 %44",
"%45 = OpLabel",
"%46 = OpLoad %float %38",
"%47 = OpFNegate %float %46",
"OpStore %38 %47",
"OpBranch %44",
"%44 = OpLabel",
"%48 = OpLoad %float %38",
"OpStore %39 %48",
"%25 = OpLoad %float %39",
"%26 = OpCompositeConstruct %v4float %25 %25 %25 %25",
"OpStore %color %26",
"%27 = OpLoad %v4float %color",
"OpStore %gl_FragColor %27",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
SinglePassRunAndCheck<InlineExhaustivePass>(
JoinAllInsts(Concat(Concat(predefs, before), nonEntryFuncs)),
JoinAllInsts(Concat(Concat(predefs, after), nonEntryFuncs)),
/* skip_nop = */ false, /* do_validate = */ true);
}
TEST_F(InlineTest, PhiAfterCall) {
// #version 140
//
// in vec4 BaseColor;
//
// float foo(float bar)
// {
// float r = bar;
// if (r < 0.0)
// r = -r;
// return r;
// }
//
// void main()
// {
// vec4 color = BaseColor;
// if (foo(color.x) > 2.0 && foo(color.y) > 2.0)
// color = vec4(0.0);
// gl_FragColor = color;
// }
const std::vector<const char*> predefs = {
// clang-format off
"OpCapability Shader",
"%1 = OpExtInstImport \"GLSL.std.450\"",
"OpMemoryModel Logical GLSL450",
"OpEntryPoint Fragment %main \"main\" %BaseColor %gl_FragColor",
"OpExecutionMode %main OriginUpperLeft",
"OpSource GLSL 140",
"OpName %main \"main\"",
"OpName %foo_f1_ \"foo(f1;\"",
"OpName %bar \"bar\"",
"OpName %r \"r\"",
"OpName %color \"color\"",
"OpName %BaseColor \"BaseColor\"",
"OpName %param \"param\"",
"OpName %param_0 \"param\"",
"OpName %gl_FragColor \"gl_FragColor\"",
"%void = OpTypeVoid",
"%12 = OpTypeFunction %void",
"%float = OpTypeFloat 32",
"%_ptr_Function_float = OpTypePointer Function %float",
"%15 = OpTypeFunction %float %_ptr_Function_float",
"%float_0 = OpConstant %float 0",
"%bool = OpTypeBool",
"%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_0 = OpConstant %uint 0",
"%float_2 = OpConstant %float 2",
"%uint_1 = OpConstant %uint 1",
"%25 = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0",
"%_ptr_Output_v4float = OpTypePointer Output %v4float",
"%gl_FragColor = OpVariable %_ptr_Output_v4float Output",
// clang-format on
};
const std::vector<const char*> nonEntryFuncs = {
// clang-format off
"%foo_f1_ = OpFunction %float None %15",
"%bar = OpFunctionParameter %_ptr_Function_float",
"%43 = OpLabel",
"%r = OpVariable %_ptr_Function_float Function",
"%44 = OpLoad %float %bar",
"OpStore %r %44",
"%45 = OpLoad %float %r",
"%46 = OpFOrdLessThan %bool %45 %float_0",
"OpSelectionMerge %47 None",
"OpBranchConditional %46 %48 %47",
"%48 = OpLabel",
"%49 = OpLoad %float %r",
"%50 = OpFNegate %float %49",
"OpStore %r %50",
"OpBranch %47",
"%47 = OpLabel",
"%51 = OpLoad %float %r",
"OpReturnValue %51",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> before = {
// clang-format off
"%main = OpFunction %void None %12",
"%27 = OpLabel",
"%color = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_float Function",
"%param_0 = OpVariable %_ptr_Function_float Function",
"%28 = OpLoad %v4float %BaseColor",
"OpStore %color %28",
"%29 = OpAccessChain %_ptr_Function_float %color %uint_0",
"%30 = OpLoad %float %29",
"OpStore %param %30",
"%31 = OpFunctionCall %float %foo_f1_ %param",
"%32 = OpFOrdGreaterThan %bool %31 %float_2",
"OpSelectionMerge %33 None",
"OpBranchConditional %32 %34 %33",
"%34 = OpLabel",
"%35 = OpAccessChain %_ptr_Function_float %color %uint_1",
"%36 = OpLoad %float %35",
"OpStore %param_0 %36",
"%37 = OpFunctionCall %float %foo_f1_ %param_0",
"%38 = OpFOrdGreaterThan %bool %37 %float_2",
"OpBranch %33",
"%33 = OpLabel",
"%39 = OpPhi %bool %32 %27 %38 %34",
"OpSelectionMerge %40 None",
"OpBranchConditional %39 %41 %40",
"%41 = OpLabel",
"OpStore %color %25",
"OpBranch %40",
"%40 = OpLabel",
"%42 = OpLoad %v4float %color",
"OpStore %gl_FragColor %42",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> after = {
// clang-format off
"%main = OpFunction %void None %12",
"%27 = OpLabel",
"%62 = OpVariable %_ptr_Function_float Function",
"%63 = OpVariable %_ptr_Function_float Function",
"%52 = OpVariable %_ptr_Function_float Function",
"%53 = OpVariable %_ptr_Function_float Function",
"%color = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_float Function",
"%param_0 = OpVariable %_ptr_Function_float Function",
"%28 = OpLoad %v4float %BaseColor",
"OpStore %color %28",
"%29 = OpAccessChain %_ptr_Function_float %color %uint_0",
"%30 = OpLoad %float %29",
"OpStore %param %30",
"%54 = OpLoad %float %param",
"OpStore %52 %54",
"%55 = OpLoad %float %52",
"%56 = OpFOrdLessThan %bool %55 %float_0",
"OpSelectionMerge %57 None",
"OpBranchConditional %56 %58 %57",
"%58 = OpLabel",
"%59 = OpLoad %float %52",
"%60 = OpFNegate %float %59",
"OpStore %52 %60",
"OpBranch %57",
"%57 = OpLabel",
"%61 = OpLoad %float %52",
"OpStore %53 %61",
"%31 = OpLoad %float %53",
"%32 = OpFOrdGreaterThan %bool %31 %float_2",
"OpSelectionMerge %33 None",
"OpBranchConditional %32 %34 %33",
"%34 = OpLabel",
"%35 = OpAccessChain %_ptr_Function_float %color %uint_1",
"%36 = OpLoad %float %35",
"OpStore %param_0 %36",
"%64 = OpLoad %float %param_0",
"OpStore %62 %64",
"%65 = OpLoad %float %62",
"%66 = OpFOrdLessThan %bool %65 %float_0",
"OpSelectionMerge %67 None",
"OpBranchConditional %66 %68 %67",
"%68 = OpLabel",
"%69 = OpLoad %float %62",
"%70 = OpFNegate %float %69",
"OpStore %62 %70",
"OpBranch %67",
"%67 = OpLabel",
"%71 = OpLoad %float %62",
"OpStore %63 %71",
"%37 = OpLoad %float %63",
"%38 = OpFOrdGreaterThan %bool %37 %float_2",
"OpBranch %33",
"%33 = OpLabel",
"%39 = OpPhi %bool %32 %57 %38 %67",
"OpSelectionMerge %40 None",
"OpBranchConditional %39 %41 %40",
"%41 = OpLabel",
"OpStore %color %25",
"OpBranch %40",
"%40 = OpLabel",
"%42 = OpLoad %v4float %color",
"OpStore %gl_FragColor %42",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
SinglePassRunAndCheck<InlineExhaustivePass>(
JoinAllInsts(Concat(Concat(predefs, before), nonEntryFuncs)),
JoinAllInsts(Concat(Concat(predefs, after), nonEntryFuncs)),
/* skip_nop = */ false, /* do_validate = */ true);
}
TEST_F(InlineTest, OpSampledImageOutOfBlock) {
// #version 450
//
// uniform texture2D t2D;
// uniform sampler samp;
// out vec4 FragColor;
// in vec4 BaseColor;
//
// float foo(vec4 bar)
// {
// float r = bar.x;
// if (r < 0.0)
// r = -r;
// return r;
// }
//
// void main()
// {
// vec4 color1 = texture(sampler2D(t2D, samp), vec2(1.0));
// vec4 color2 = vec4(foo(BaseColor));
// vec4 color3 = texture(sampler2D(t2D, samp), vec2(0.5));
// FragColor = (color1 + color2 + color3)/3;
// }
//
// Note: the before SPIR-V will need to be edited to create a use of
// the OpSampledImage across the function call.
const std::vector<const char*> predefs = {
// clang-format off
"OpCapability Shader",
"%1 = OpExtInstImport \"GLSL.std.450\"",
"OpMemoryModel Logical GLSL450",
"OpEntryPoint Fragment %main \"main\" %BaseColor %FragColor",
"OpExecutionMode %main OriginUpperLeft",
"OpSource GLSL 450",
"OpName %main \"main\"",
"OpName %foo_vf4_ \"foo(vf4;\"",
"OpName %bar \"bar\"",
"OpName %r \"r\"",
"OpName %color1 \"color1\"",
"OpName %t2D \"t2D\"",
"OpName %samp \"samp\"",
"OpName %color2 \"color2\"",
"OpName %BaseColor \"BaseColor\"",
"OpName %param \"param\"",
"OpName %color3 \"color3\"",
"OpName %FragColor \"FragColor\"",
"OpDecorate %t2D DescriptorSet 0",
"OpDecorate %samp DescriptorSet 0",
"%void = OpTypeVoid",
"%15 = OpTypeFunction %void",
"%float = OpTypeFloat 32",
"%v4float = OpTypeVector %float 4",
"%_ptr_Function_v4float = OpTypePointer Function %v4float",
"%19 = OpTypeFunction %float %_ptr_Function_v4float",
"%_ptr_Function_float = OpTypePointer Function %float",
"%uint = OpTypeInt 32 0",
"%uint_0 = OpConstant %uint 0",
"%float_0 = OpConstant %float 0",
"%bool = OpTypeBool",
"%25 = OpTypeImage %float 2D 0 0 0 1 Unknown",
"%_ptr_UniformConstant_25 = OpTypePointer UniformConstant %25",
"%t2D = OpVariable %_ptr_UniformConstant_25 UniformConstant",
"%27 = OpTypeSampler",
"%_ptr_UniformConstant_27 = OpTypePointer UniformConstant %27",
"%samp = OpVariable %_ptr_UniformConstant_27 UniformConstant",
"%29 = OpTypeSampledImage %25",
"%v2float = OpTypeVector %float 2",
"%float_1 = OpConstant %float 1",
"%32 = OpConstantComposite %v2float %float_1 %float_1",
"%_ptr_Input_v4float = OpTypePointer Input %v4float",
"%BaseColor = OpVariable %_ptr_Input_v4float Input",
"%float_0_5 = OpConstant %float 0.5",
"%35 = OpConstantComposite %v2float %float_0_5 %float_0_5",
"%_ptr_Output_v4float = OpTypePointer Output %v4float",
"%FragColor = OpVariable %_ptr_Output_v4float Output",
"%float_3 = OpConstant %float 3",
// clang-format on
};
const std::vector<const char*> nonEntryFuncs = {
// clang-format off
"%foo_vf4_ = OpFunction %float None %19",
"%bar = OpFunctionParameter %_ptr_Function_v4float",
"%56 = OpLabel",
"%r = OpVariable %_ptr_Function_float Function",
"%57 = OpAccessChain %_ptr_Function_float %bar %uint_0",
"%58 = OpLoad %float %57",
"OpStore %r %58",
"%59 = OpLoad %float %r",
"%60 = OpFOrdLessThan %bool %59 %float_0",
"OpSelectionMerge %61 None",
"OpBranchConditional %60 %62 %61",
"%62 = OpLabel",
"%63 = OpLoad %float %r",
"%64 = OpFNegate %float %63",
"OpStore %r %64",
"OpBranch %61",
"%61 = OpLabel",
"%65 = OpLoad %float %r",
"OpReturnValue %65",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> before = {
// clang-format off
"%main = OpFunction %void None %15",
"%38 = OpLabel",
"%color1 = OpVariable %_ptr_Function_v4float Function",
"%color2 = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_v4float Function",
"%color3 = OpVariable %_ptr_Function_v4float Function",
"%39 = OpLoad %25 %t2D",
"%40 = OpLoad %27 %samp",
"%41 = OpSampledImage %29 %39 %40",
"%42 = OpImageSampleImplicitLod %v4float %41 %32",
"OpStore %color1 %42",
"%43 = OpLoad %v4float %BaseColor",
"OpStore %param %43",
"%44 = OpFunctionCall %float %foo_vf4_ %param",
"%45 = OpCompositeConstruct %v4float %44 %44 %44 %44",
"OpStore %color2 %45",
"%46 = OpLoad %25 %t2D",
"%47 = OpLoad %27 %samp",
"%48 = OpImageSampleImplicitLod %v4float %41 %35",
"OpStore %color3 %48",
"%49 = OpLoad %v4float %color1",
"%50 = OpLoad %v4float %color2",
"%51 = OpFAdd %v4float %49 %50",
"%52 = OpLoad %v4float %color3",
"%53 = OpFAdd %v4float %51 %52",
"%54 = OpCompositeConstruct %v4float %float_3 %float_3 %float_3 %float_3",
"%55 = OpFDiv %v4float %53 %54",
"OpStore %FragColor %55",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> after = {
// clang-format off
"%main = OpFunction %void None %15",
"%38 = OpLabel",
"%66 = OpVariable %_ptr_Function_float Function",
"%67 = OpVariable %_ptr_Function_float Function",
"%color1 = OpVariable %_ptr_Function_v4float Function",
"%color2 = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_v4float Function",
"%color3 = OpVariable %_ptr_Function_v4float Function",
"%39 = OpLoad %25 %t2D",
"%40 = OpLoad %27 %samp",
"%41 = OpSampledImage %29 %39 %40",
"%42 = OpImageSampleImplicitLod %v4float %41 %32",
"OpStore %color1 %42",
"%43 = OpLoad %v4float %BaseColor",
"OpStore %param %43",
"%68 = OpAccessChain %_ptr_Function_float %param %uint_0",
"%69 = OpLoad %float %68",
"OpStore %66 %69",
"%70 = OpLoad %float %66",
"%71 = OpFOrdLessThan %bool %70 %float_0",
"OpSelectionMerge %72 None",
"OpBranchConditional %71 %73 %72",
"%73 = OpLabel",
"%74 = OpLoad %float %66",
"%75 = OpFNegate %float %74",
"OpStore %66 %75",
"OpBranch %72",
"%72 = OpLabel",
"%76 = OpLoad %float %66",
"OpStore %67 %76",
"%44 = OpLoad %float %67",
"%45 = OpCompositeConstruct %v4float %44 %44 %44 %44",
"OpStore %color2 %45",
"%46 = OpLoad %25 %t2D",
"%47 = OpLoad %27 %samp",
"%77 = OpSampledImage %29 %39 %40",
"%48 = OpImageSampleImplicitLod %v4float %77 %35",
"OpStore %color3 %48",
"%49 = OpLoad %v4float %color1",
"%50 = OpLoad %v4float %color2",
"%51 = OpFAdd %v4float %49 %50",
"%52 = OpLoad %v4float %color3",
"%53 = OpFAdd %v4float %51 %52",
"%54 = OpCompositeConstruct %v4float %float_3 %float_3 %float_3 %float_3",
"%55 = OpFDiv %v4float %53 %54",
"OpStore %FragColor %55",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
SinglePassRunAndCheck<InlineExhaustivePass>(
JoinAllInsts(Concat(Concat(predefs, before), nonEntryFuncs)),
JoinAllInsts(Concat(Concat(predefs, after), nonEntryFuncs)),
/* skip_nop = */ false, /* do_validate = */ true);
}
TEST_F(InlineTest, OpImageOutOfBlock) {
// #version 450
//
// uniform texture2D t2D;
// uniform sampler samp;
// uniform sampler samp2;
//
// out vec4 FragColor;
//
// in vec4 BaseColor;
//
// float foo(vec4 bar)
// {
// float r = bar.x;
// if (r < 0.0)
// r = -r;
// return r;
// }
//
// void main()
// {
// vec4 color1 = texture(sampler2D(t2D, samp), vec2(1.0));
// vec4 color2 = vec4(foo(BaseColor));
// vec4 color3 = texture(sampler2D(t2D, samp2), vec2(0.5));
// FragColor = (color1 + color2 + color3)/3;
// }
// Note: the before SPIR-V will need to be edited to create an OpImage
// from the first OpSampledImage, place it before the call and use it
// in the second OpSampledImage following the call.
const std::vector<const char*> predefs = {
// clang-format off
"OpCapability Shader",
"%1 = OpExtInstImport \"GLSL.std.450\"",
"OpMemoryModel Logical GLSL450",
"OpEntryPoint Fragment %main \"main\" %BaseColor %FragColor",
"OpExecutionMode %main OriginUpperLeft",
"OpSource GLSL 450",
"OpName %main \"main\"",
"OpName %foo_vf4_ \"foo(vf4;\"",
"OpName %bar \"bar\"",
"OpName %r \"r\"",
"OpName %color1 \"color1\"",
"OpName %t2D \"t2D\"",
"OpName %samp \"samp\"",
"OpName %color2 \"color2\"",
"OpName %BaseColor \"BaseColor\"",
"OpName %param \"param\"",
"OpName %color3 \"color3\"",
"OpName %samp2 \"samp2\"",
"OpName %FragColor \"FragColor\"",
"OpDecorate %t2D DescriptorSet 0",
"OpDecorate %samp DescriptorSet 0",
"OpDecorate %samp2 DescriptorSet 0",
"%void = OpTypeVoid",
"%16 = OpTypeFunction %void",
"%float = OpTypeFloat 32",
"%v4float = OpTypeVector %float 4",
"%_ptr_Function_v4float = OpTypePointer Function %v4float",
"%20 = OpTypeFunction %float %_ptr_Function_v4float",
"%_ptr_Function_float = OpTypePointer Function %float",
"%uint = OpTypeInt 32 0",
"%uint_0 = OpConstant %uint 0",
"%float_0 = OpConstant %float 0",
"%bool = OpTypeBool",
"%26 = OpTypeImage %float 2D 0 0 0 1 Unknown",
"%_ptr_UniformConstant_26 = OpTypePointer UniformConstant %26",
"%t2D = OpVariable %_ptr_UniformConstant_26 UniformConstant",
"%28 = OpTypeSampler",
"%_ptr_UniformConstant_28 = OpTypePointer UniformConstant %28",
"%samp = OpVariable %_ptr_UniformConstant_28 UniformConstant",
"%30 = OpTypeSampledImage %26",
"%v2float = OpTypeVector %float 2",
"%float_1 = OpConstant %float 1",
"%33 = OpConstantComposite %v2float %float_1 %float_1",
"%_ptr_Input_v4float = OpTypePointer Input %v4float",
"%BaseColor = OpVariable %_ptr_Input_v4float Input",
"%samp2 = OpVariable %_ptr_UniformConstant_28 UniformConstant",
"%float_0_5 = OpConstant %float 0.5",
"%36 = OpConstantComposite %v2float %float_0_5 %float_0_5",
"%_ptr_Output_v4float = OpTypePointer Output %v4float",
"%FragColor = OpVariable %_ptr_Output_v4float Output",
"%float_3 = OpConstant %float 3",
// clang-format on
};
const std::vector<const char*> nonEntryFuncs = {
// clang-format off
"%foo_vf4_ = OpFunction %float None %20",
"%bar = OpFunctionParameter %_ptr_Function_v4float",
"%58 = OpLabel",
"%r = OpVariable %_ptr_Function_float Function",
"%59 = OpAccessChain %_ptr_Function_float %bar %uint_0",
"%60 = OpLoad %float %59",
"OpStore %r %60",
"%61 = OpLoad %float %r",
"%62 = OpFOrdLessThan %bool %61 %float_0",
"OpSelectionMerge %63 None",
"OpBranchConditional %62 %64 %63",
"%64 = OpLabel",
"%65 = OpLoad %float %r",
"%66 = OpFNegate %float %65",
"OpStore %r %66",
"OpBranch %63",
"%63 = OpLabel",
"%67 = OpLoad %float %r",
"OpReturnValue %67",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> before = {
// clang-format off
"%main = OpFunction %void None %16",
"%39 = OpLabel",
"%color1 = OpVariable %_ptr_Function_v4float Function",
"%color2 = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_v4float Function",
"%color3 = OpVariable %_ptr_Function_v4float Function",
"%40 = OpLoad %26 %t2D",
"%41 = OpLoad %28 %samp",
"%42 = OpSampledImage %30 %40 %41",
"%43 = OpImageSampleImplicitLod %v4float %42 %33",
"%44 = OpImage %26 %42",
"%45 = OpLoad %28 %samp2",
"OpStore %color1 %43",
"%46 = OpLoad %v4float %BaseColor",
"OpStore %param %46",
"%47 = OpFunctionCall %float %foo_vf4_ %param",
"%48 = OpCompositeConstruct %v4float %47 %47 %47 %47",
"OpStore %color2 %48",
"%49 = OpSampledImage %30 %44 %45",
"%50 = OpImageSampleImplicitLod %v4float %49 %36",
"OpStore %color3 %50",
"%51 = OpLoad %v4float %color1",
"%52 = OpLoad %v4float %color2",
"%53 = OpFAdd %v4float %51 %52",
"%54 = OpLoad %v4float %color3",
"%55 = OpFAdd %v4float %53 %54",
"%56 = OpCompositeConstruct %v4float %float_3 %float_3 %float_3 %float_3",
"%57 = OpFDiv %v4float %55 %56",
"OpStore %FragColor %57",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> after = {
// clang-format off
"%main = OpFunction %void None %16",
"%39 = OpLabel",
"%68 = OpVariable %_ptr_Function_float Function",
"%69 = OpVariable %_ptr_Function_float Function",
"%color1 = OpVariable %_ptr_Function_v4float Function",
"%color2 = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_v4float Function",
"%color3 = OpVariable %_ptr_Function_v4float Function",
"%40 = OpLoad %26 %t2D",
"%41 = OpLoad %28 %samp",
"%42 = OpSampledImage %30 %40 %41",
"%43 = OpImageSampleImplicitLod %v4float %42 %33",
"%44 = OpImage %26 %42",
"%45 = OpLoad %28 %samp2",
"OpStore %color1 %43",
"%46 = OpLoad %v4float %BaseColor",
"OpStore %param %46",
"%70 = OpAccessChain %_ptr_Function_float %param %uint_0",
"%71 = OpLoad %float %70",
"OpStore %68 %71",
"%72 = OpLoad %float %68",
"%73 = OpFOrdLessThan %bool %72 %float_0",
"OpSelectionMerge %74 None",
"OpBranchConditional %73 %75 %74",
"%75 = OpLabel",
"%76 = OpLoad %float %68",
"%77 = OpFNegate %float %76",
"OpStore %68 %77",
"OpBranch %74",
"%74 = OpLabel",
"%78 = OpLoad %float %68",
"OpStore %69 %78",
"%47 = OpLoad %float %69",
"%48 = OpCompositeConstruct %v4float %47 %47 %47 %47",
"OpStore %color2 %48",
"%79 = OpSampledImage %30 %40 %41",
"%80 = OpImage %26 %79",
"%49 = OpSampledImage %30 %80 %45",
"%50 = OpImageSampleImplicitLod %v4float %49 %36",
"OpStore %color3 %50",
"%51 = OpLoad %v4float %color1",
"%52 = OpLoad %v4float %color2",
"%53 = OpFAdd %v4float %51 %52",
"%54 = OpLoad %v4float %color3",
"%55 = OpFAdd %v4float %53 %54",
"%56 = OpCompositeConstruct %v4float %float_3 %float_3 %float_3 %float_3",
"%57 = OpFDiv %v4float %55 %56",
"OpStore %FragColor %57",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
SinglePassRunAndCheck<InlineExhaustivePass>(
JoinAllInsts(Concat(Concat(predefs, before), nonEntryFuncs)),
JoinAllInsts(Concat(Concat(predefs, after), nonEntryFuncs)),
/* skip_nop = */ false, /* do_validate = */ true);
}
TEST_F(InlineTest, OpImageAndOpSampledImageOutOfBlock) {
// #version 450
//
// uniform texture2D t2D;
// uniform sampler samp;
// uniform sampler samp2;
//
// out vec4 FragColor;
//
// in vec4 BaseColor;
//
// float foo(vec4 bar)
// {
// float r = bar.x;
// if (r < 0.0)
// r = -r;
// return r;
// }
//
// void main()
// {
// vec4 color1 = texture(sampler2D(t2D, samp), vec2(1.0));
// vec4 color2 = vec4(foo(BaseColor));
// vec4 color3 = texture(sampler2D(t2D, samp2), vec2(0.5));
// FragColor = (color1 + color2 + color3)/3;
// }
// Note: the before SPIR-V will need to be edited to create an OpImage
// and subsequent OpSampledImage that is used across the function call.
const std::vector<const char*> predefs = {
// clang-format off
"OpCapability Shader",
"%1 = OpExtInstImport \"GLSL.std.450\"",
"OpMemoryModel Logical GLSL450",
"OpEntryPoint Fragment %main \"main\" %BaseColor %FragColor",
"OpExecutionMode %main OriginUpperLeft",
"OpSource GLSL 450",
"OpName %main \"main\"",
"OpName %foo_vf4_ \"foo(vf4;\"",
"OpName %bar \"bar\"",
"OpName %r \"r\"",
"OpName %color1 \"color1\"",
"OpName %t2D \"t2D\"",
"OpName %samp \"samp\"",
"OpName %color2 \"color2\"",
"OpName %BaseColor \"BaseColor\"",
"OpName %param \"param\"",
"OpName %color3 \"color3\"",
"OpName %samp2 \"samp2\"",
"OpName %FragColor \"FragColor\"",
"OpDecorate %t2D DescriptorSet 0",
"OpDecorate %samp DescriptorSet 0",
"OpDecorate %samp2 DescriptorSet 0",
"%void = OpTypeVoid",
"%16 = OpTypeFunction %void",
"%float = OpTypeFloat 32",
"%v4float = OpTypeVector %float 4",
"%_ptr_Function_v4float = OpTypePointer Function %v4float",
"%20 = OpTypeFunction %float %_ptr_Function_v4float",
"%_ptr_Function_float = OpTypePointer Function %float",
"%uint = OpTypeInt 32 0",
"%uint_0 = OpConstant %uint 0",
"%float_0 = OpConstant %float 0",
"%bool = OpTypeBool",
"%26 = OpTypeImage %float 2D 0 0 0 1 Unknown",
"%_ptr_UniformConstant_26 = OpTypePointer UniformConstant %26",
"%t2D = OpVariable %_ptr_UniformConstant_26 UniformConstant",
"%28 = OpTypeSampler",
"%_ptr_UniformConstant_28 = OpTypePointer UniformConstant %28",
"%samp = OpVariable %_ptr_UniformConstant_28 UniformConstant",
"%30 = OpTypeSampledImage %26",
"%v2float = OpTypeVector %float 2",
"%float_1 = OpConstant %float 1",
"%33 = OpConstantComposite %v2float %float_1 %float_1",
"%_ptr_Input_v4float = OpTypePointer Input %v4float",
"%BaseColor = OpVariable %_ptr_Input_v4float Input",
"%samp2 = OpVariable %_ptr_UniformConstant_28 UniformConstant",
"%float_0_5 = OpConstant %float 0.5",
"%36 = OpConstantComposite %v2float %float_0_5 %float_0_5",
"%_ptr_Output_v4float = OpTypePointer Output %v4float",
"%FragColor = OpVariable %_ptr_Output_v4float Output",
"%float_3 = OpConstant %float 3",
// clang-format on
};
const std::vector<const char*> nonEntryFuncs = {
// clang-format off
"%foo_vf4_ = OpFunction %float None %20",
"%bar = OpFunctionParameter %_ptr_Function_v4float",
"%58 = OpLabel",
"%r = OpVariable %_ptr_Function_float Function",
"%59 = OpAccessChain %_ptr_Function_float %bar %uint_0",
"%60 = OpLoad %float %59",
"OpStore %r %60",
"%61 = OpLoad %float %r",
"%62 = OpFOrdLessThan %bool %61 %float_0",
"OpSelectionMerge %63 None",
"OpBranchConditional %62 %64 %63",
"%64 = OpLabel",
"%65 = OpLoad %float %r",
"%66 = OpFNegate %float %65",
"OpStore %r %66",
"OpBranch %63",
"%63 = OpLabel",
"%67 = OpLoad %float %r",
"OpReturnValue %67",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> before = {
// clang-format off
"%main = OpFunction %void None %16",
"%39 = OpLabel",
"%color1 = OpVariable %_ptr_Function_v4float Function",
"%color2 = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_v4float Function",
"%color3 = OpVariable %_ptr_Function_v4float Function",
"%40 = OpLoad %26 %t2D",
"%41 = OpLoad %28 %samp",
"%42 = OpSampledImage %30 %40 %41",
"%43 = OpImageSampleImplicitLod %v4float %42 %33",
"%44 = OpImage %26 %42",
"%45 = OpLoad %28 %samp2",
"%46 = OpSampledImage %30 %44 %45",
"OpStore %color1 %43",
"%47 = OpLoad %v4float %BaseColor",
"OpStore %param %47",
"%48 = OpFunctionCall %float %foo_vf4_ %param",
"%49 = OpCompositeConstruct %v4float %48 %48 %48 %48",
"OpStore %color2 %49",
"%50 = OpImageSampleImplicitLod %v4float %46 %36",
"OpStore %color3 %50",
"%51 = OpLoad %v4float %color1",
"%52 = OpLoad %v4float %color2",
"%53 = OpFAdd %v4float %51 %52",
"%54 = OpLoad %v4float %color3",
"%55 = OpFAdd %v4float %53 %54",
"%56 = OpCompositeConstruct %v4float %float_3 %float_3 %float_3 %float_3",
"%57 = OpFDiv %v4float %55 %56",
"OpStore %FragColor %57",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
const std::vector<const char*> after = {
// clang-format off
"%main = OpFunction %void None %16",
"%39 = OpLabel",
"%68 = OpVariable %_ptr_Function_float Function",
"%69 = OpVariable %_ptr_Function_float Function",
"%color1 = OpVariable %_ptr_Function_v4float Function",
"%color2 = OpVariable %_ptr_Function_v4float Function",
"%param = OpVariable %_ptr_Function_v4float Function",
"%color3 = OpVariable %_ptr_Function_v4float Function",
"%40 = OpLoad %26 %t2D",
"%41 = OpLoad %28 %samp",
"%42 = OpSampledImage %30 %40 %41",
"%43 = OpImageSampleImplicitLod %v4float %42 %33",
"%44 = OpImage %26 %42",
"%45 = OpLoad %28 %samp2",
"%46 = OpSampledImage %30 %44 %45",
"OpStore %color1 %43",
"%47 = OpLoad %v4float %BaseColor",
"OpStore %param %47",
"%70 = OpAccessChain %_ptr_Function_float %param %uint_0",
"%71 = OpLoad %float %70",
"OpStore %68 %71",
"%72 = OpLoad %float %68",
"%73 = OpFOrdLessThan %bool %72 %float_0",
"OpSelectionMerge %74 None",
"OpBranchConditional %73 %75 %74",
"%75 = OpLabel",
"%76 = OpLoad %float %68",
"%77 = OpFNegate %float %76",
"OpStore %68 %77",
"OpBranch %74",
"%74 = OpLabel",
"%78 = OpLoad %float %68",
"OpStore %69 %78",
"%48 = OpLoad %float %69",
"%49 = OpCompositeConstruct %v4float %48 %48 %48 %48",
"OpStore %color2 %49",
"%79 = OpSampledImage %30 %40 %41",
"%80 = OpImage %26 %79",
"%81 = OpSampledImage %30 %80 %45",
"%50 = OpImageSampleImplicitLod %v4float %81 %36",
"OpStore %color3 %50",
"%51 = OpLoad %v4float %color1",
"%52 = OpLoad %v4float %color2",
"%53 = OpFAdd %v4float %51 %52",
"%54 = OpLoad %v4float %color3",
"%55 = OpFAdd %v4float %53 %54",
"%56 = OpCompositeConstruct %v4float %float_3 %float_3 %float_3 %float_3",
"%57 = OpFDiv %v4float %55 %56",
"OpStore %FragColor %57",
"OpReturn",
"OpFunctionEnd",
// clang-format on
};
SinglePassRunAndCheck<InlineExhaustivePass>(
JoinAllInsts(Concat(Concat(predefs, before), nonEntryFuncs)),
JoinAllInsts(Concat(Concat(predefs, after), nonEntryFuncs)),
/* skip_nop = */ false, /* do_validate = */ true);
}
TEST_F(InlineTest, EarlyReturnFunctionInlined) {
// #version 140
//
// in vec4 BaseColor;
//
// float foo(vec4 bar)
// {
// if (bar.x < 0.0)
// return 0.0;
// return bar.x;
// }
//
// void main()
// {
// vec4 color = vec4(foo(BaseColor));
// gl_FragColor = color;
// }
const std::string predefs =
R"(OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %BaseColor %gl_FragColor
OpExecutionMode %main OriginUpperLeft
OpSource GLSL 140
OpName %main "main"
OpName %foo_vf4_ "foo(vf4;"
OpName %bar "bar"
OpName %color "color"
OpName %BaseColor "BaseColor"
OpName %param "param"
OpName %gl_FragColor "gl_FragColor"
%void = OpTypeVoid
%10 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%_ptr_Function_v4float = OpTypePointer Function %v4float
%14 = OpTypeFunction %float %_ptr_Function_v4float
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%_ptr_Function_float = OpTypePointer Function %float
%float_0 = OpConstant %float 0
%bool = OpTypeBool
%_ptr_Input_v4float = OpTypePointer Input %v4float
%BaseColor = OpVariable %_ptr_Input_v4float Input
%_ptr_Output_v4float = OpTypePointer Output %v4float
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
)";
const std::string nonEntryFuncs =
R"(%foo_vf4_ = OpFunction %float None %14
%bar = OpFunctionParameter %_ptr_Function_v4float
%27 = OpLabel
%28 = OpAccessChain %_ptr_Function_float %bar %uint_0
%29 = OpLoad %float %28
%30 = OpFOrdLessThan %bool %29 %float_0
OpSelectionMerge %31 None
OpBranchConditional %30 %32 %31
%32 = OpLabel
OpReturnValue %float_0
%31 = OpLabel
%33 = OpAccessChain %_ptr_Function_float %bar %uint_0
%34 = OpLoad %float %33
OpReturnValue %34
OpFunctionEnd
)";
const std::string before =
R"(%main = OpFunction %void None %10
%22 = OpLabel
%color = OpVariable %_ptr_Function_v4float Function
%param = OpVariable %_ptr_Function_v4float Function
%23 = OpLoad %v4float %BaseColor
OpStore %param %23
%24 = OpFunctionCall %float %foo_vf4_ %param
%25 = OpCompositeConstruct %v4float %24 %24 %24 %24
OpStore %color %25
%26 = OpLoad %v4float %color
OpStore %gl_FragColor %26
OpReturn
OpFunctionEnd
)";
const std::string after =
R"(%false = OpConstantFalse %bool
%main = OpFunction %void None %10
%22 = OpLabel
%35 = OpVariable %_ptr_Function_float Function
%color = OpVariable %_ptr_Function_v4float Function
%param = OpVariable %_ptr_Function_v4float Function
%23 = OpLoad %v4float %BaseColor
OpStore %param %23
OpBranch %36
%36 = OpLabel
OpLoopMerge %37 %38 None
OpBranch %39
%39 = OpLabel
%40 = OpAccessChain %_ptr_Function_float %param %uint_0
%41 = OpLoad %float %40
%42 = OpFOrdLessThan %bool %41 %float_0
OpSelectionMerge %43 None
OpBranchConditional %42 %44 %43
%44 = OpLabel
OpStore %35 %float_0
OpBranch %37
%43 = OpLabel
%45 = OpAccessChain %_ptr_Function_float %param %uint_0
%46 = OpLoad %float %45
OpStore %35 %46
OpBranch %37
%38 = OpLabel
OpBranchConditional %false %36 %37
%37 = OpLabel
%24 = OpLoad %float %35
%25 = OpCompositeConstruct %v4float %24 %24 %24 %24
OpStore %color %25
%26 = OpLoad %v4float %color
OpStore %gl_FragColor %26
OpReturn
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(predefs + before + nonEntryFuncs,
predefs + after + nonEntryFuncs,
false, true);
}
TEST_F(InlineTest, EarlyReturnNotAppearingLastInFunctionInlined) {
// Example from https://github.com/KhronosGroup/SPIRV-Tools/issues/755
//
// Original example is derived from:
//
// #version 450
//
// float foo() {
// if (true) {
// }
// }
//
// void main() { foo(); }
//
// But the order of basic blocks in foo is changed so that the return
// block is listed second-last. There is only one return in the callee
// but it does not appear last.
const std::string predefs =
R"(OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint Vertex %main "main"
OpSource GLSL 450
OpName %main "main"
OpName %foo_ "foo("
%void = OpTypeVoid
%4 = OpTypeFunction %void
%bool = OpTypeBool
%true = OpConstantTrue %bool
)";
const std::string nonEntryFuncs =
R"(%foo_ = OpFunction %void None %4
%7 = OpLabel
OpSelectionMerge %8 None
OpBranchConditional %true %9 %8
%8 = OpLabel
OpReturn
%9 = OpLabel
OpBranch %8
OpFunctionEnd
)";
const std::string before =
R"(%main = OpFunction %void None %4
%10 = OpLabel
%11 = OpFunctionCall %void %foo_
OpReturn
OpFunctionEnd
)";
const std::string after =
R"(%main = OpFunction %void None %4
%10 = OpLabel
OpSelectionMerge %12 None
OpBranchConditional %true %13 %12
%12 = OpLabel
OpBranch %14
%13 = OpLabel
OpBranch %12
%14 = OpLabel
OpReturn
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(predefs + nonEntryFuncs + before,
predefs + nonEntryFuncs + after,
false, true);
}
TEST_F(InlineTest, ForwardReferencesInPhiInlined) {
// The basic structure of the test case is like this:
//
// int foo() {
// int result = 1;
// if (true) {
// result = 1;
// }
// return result;
// }
//
// void main() {
// int x = foo();
// }
//
// but with modifications: Using Phi instead of load/store, and the
// return block in foo appears before the "then" block.
const std::string predefs =
R"(OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Vertex %main "main"
OpSource GLSL 450
OpName %main "main"
OpName %foo_ "foo("
OpName %x "x"
%void = OpTypeVoid
%6 = OpTypeFunction %void
%int = OpTypeInt 32 1
%8 = OpTypeFunction %int
%bool = OpTypeBool
%true = OpConstantTrue %bool
%int_0 = OpConstant %int 0
%_ptr_Function_int = OpTypePointer Function %int
)";
const std::string nonEntryFuncs =
R"(%foo_ = OpFunction %int None %8
%13 = OpLabel
%14 = OpCopyObject %int %int_0
OpSelectionMerge %15 None
OpBranchConditional %true %16 %15
%15 = OpLabel
%17 = OpPhi %int %14 %13 %18 %16
OpReturnValue %17
%16 = OpLabel
%18 = OpCopyObject %int %int_0
OpBranch %15
OpFunctionEnd
)";
const std::string before =
R"(%main = OpFunction %void None %6
%19 = OpLabel
%x = OpVariable %_ptr_Function_int Function
%20 = OpFunctionCall %int %foo_
OpStore %x %20
OpReturn
OpFunctionEnd
)";
const std::string after =
R"(%main = OpFunction %void None %6
%19 = OpLabel
%21 = OpVariable %_ptr_Function_int Function
%x = OpVariable %_ptr_Function_int Function
%22 = OpCopyObject %int %int_0
OpSelectionMerge %23 None
OpBranchConditional %true %24 %23
%23 = OpLabel
%26 = OpPhi %int %22 %19 %25 %24
OpStore %21 %26
OpBranch %27
%24 = OpLabel
%25 = OpCopyObject %int %int_0
OpBranch %23
%27 = OpLabel
%20 = OpLoad %int %21
OpStore %x %20
OpReturn
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(predefs + nonEntryFuncs + before,
predefs + nonEntryFuncs + after,
false, true);
}
TEST_F(InlineTest, EarlyReturnInLoopIsNotInlined) {
// #version 140
//
// in vec4 BaseColor;
//
// float foo(vec4 bar)
// {
// while (true) {
// if (bar.x < 0.0)
// return 0.0;
// return bar.x;
// }
// }
//
// void main()
// {
// vec4 color = vec4(foo(BaseColor));
// gl_FragColor = color;
// }
const std::string assembly =
R"(OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %BaseColor %gl_FragColor
OpExecutionMode %main OriginUpperLeft
OpSource GLSL 140
OpName %main "main"
OpName %foo_vf4_ "foo(vf4;"
OpName %bar "bar"
OpName %color "color"
OpName %BaseColor "BaseColor"
OpName %param "param"
OpName %gl_FragColor "gl_FragColor"
%void = OpTypeVoid
%10 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%_ptr_Function_v4float = OpTypePointer Function %v4float
%14 = OpTypeFunction %float %_ptr_Function_v4float
%bool = OpTypeBool
%true = OpConstantTrue %bool
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%_ptr_Function_float = OpTypePointer Function %float
%float_0 = OpConstant %float 0
%_ptr_Input_v4float = OpTypePointer Input %v4float
%BaseColor = OpVariable %_ptr_Input_v4float Input
%_ptr_Output_v4float = OpTypePointer Output %v4float
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
%main = OpFunction %void None %10
%23 = OpLabel
%color = OpVariable %_ptr_Function_v4float Function
%param = OpVariable %_ptr_Function_v4float Function
%24 = OpLoad %v4float %BaseColor
OpStore %param %24
%25 = OpFunctionCall %float %foo_vf4_ %param
%26 = OpCompositeConstruct %v4float %25 %25 %25 %25
OpStore %color %26
%27 = OpLoad %v4float %color
OpStore %gl_FragColor %27
OpReturn
OpFunctionEnd
%foo_vf4_ = OpFunction %float None %14
%bar = OpFunctionParameter %_ptr_Function_v4float
%28 = OpLabel
OpBranch %29
%29 = OpLabel
OpLoopMerge %30 %31 None
OpBranch %32
%32 = OpLabel
OpBranchConditional %true %33 %30
%33 = OpLabel
%34 = OpAccessChain %_ptr_Function_float %bar %uint_0
%35 = OpLoad %float %34
%36 = OpFOrdLessThan %bool %35 %float_0
OpSelectionMerge %37 None
OpBranchConditional %36 %38 %37
%38 = OpLabel
OpReturnValue %float_0
%37 = OpLabel
%39 = OpAccessChain %_ptr_Function_float %bar %uint_0
%40 = OpLoad %float %39
OpReturnValue %40
%31 = OpLabel
OpBranch %29
%30 = OpLabel
%41 = OpUndef %float
OpReturnValue %41
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(assembly, assembly, false, true);
}
TEST_F(InlineTest, ExternalFunctionIsNotInlined) {
// In particular, don't crash.
// See report https://github.com/KhronosGroup/SPIRV-Tools/issues/605
const std::string assembly =
R"(OpCapability Addresses
OpCapability Kernel
OpCapability Linkage
OpMemoryModel Physical32 OpenCL
OpEntryPoint Kernel %1 "entry_pt"
OpDecorate %2 LinkageAttributes "external" Import
%void = OpTypeVoid
%4 = OpTypeFunction %void
%2 = OpFunction %void None %4
OpFunctionEnd
%1 = OpFunction %void None %4
%5 = OpLabel
%6 = OpFunctionCall %void %2
OpReturn
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(assembly, assembly, false, true);
}
TEST_F(InlineTest, SingleBlockLoopCallsMultiBlockCallee) {
// Example from https://github.com/KhronosGroup/SPIRV-Tools/issues/787
//
// CFG structure is:
// foo:
// fooentry -> fooexit
//
// main:
// entry -> loop
// loop -> loop, merge
// loop calls foo()
// merge
//
// Since the callee has multiple blocks, it will split the calling block
// into at least two, resulting in a new "back-half" block that contains
// the instructions after the inlined function call. If the calling block
// has an OpLoopMerge that points back to the calling block itself, then
// the OpLoopMerge can't remain in the back-half block, but must be
// moved to the end of the original calling block, and it continue target
// operand updated to point to the back-half block.
const std::string predefs =
R"(OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
OpSource OpenCL_C 120
%bool = OpTypeBool
%true = OpConstantTrue %bool
%void = OpTypeVoid
)";
const std::string nonEntryFuncs =
R"(%5 = OpTypeFunction %void
%6 = OpFunction %void None %5
%7 = OpLabel
OpBranch %8
%8 = OpLabel
OpReturn
OpFunctionEnd
)";
const std::string before =
R"(%1 = OpFunction %void None %5
%9 = OpLabel
OpBranch %10
%10 = OpLabel
%11 = OpFunctionCall %void %6
OpLoopMerge %12 %10 None
OpBranchConditional %true %10 %12
%12 = OpLabel
OpReturn
OpFunctionEnd
)";
const std::string after =
R"(%1 = OpFunction %void None %5
%9 = OpLabel
OpBranch %10
%10 = OpLabel
OpLoopMerge %12 %10 None
OpBranch %13
%13 = OpLabel
OpBranchConditional %true %10 %12
%12 = OpLabel
OpReturn
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(predefs + nonEntryFuncs + before,
predefs + nonEntryFuncs + after,
false, true);
}
TEST_F(InlineTest, MultiBlockLoopHeaderCallsMultiBlockCallee) {
// Like SingleBlockLoopCallsMultiBlockCallee but the loop has several
// blocks, but the function call still occurs in the loop header.
// Example from https://github.com/KhronosGroup/SPIRV-Tools/issues/800
const std::string predefs =
R"(OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
OpSource OpenCL_C 120
%bool = OpTypeBool
%true = OpConstantTrue %bool
%int = OpTypeInt 32 1
%int_1 = OpConstant %int 1
%int_2 = OpConstant %int 2
%int_3 = OpConstant %int 3
%int_4 = OpConstant %int 4
%int_5 = OpConstant %int 5
%void = OpTypeVoid
%11 = OpTypeFunction %void
)";
const std::string nonEntryFuncs =
R"(%12 = OpFunction %void None %11
%13 = OpLabel
%14 = OpCopyObject %int %int_1
OpBranch %15
%15 = OpLabel
%16 = OpCopyObject %int %int_2
OpReturn
OpFunctionEnd
)";
const std::string before =
R"(%1 = OpFunction %void None %11
%17 = OpLabel
OpBranch %18
%18 = OpLabel
%19 = OpCopyObject %int %int_3
%20 = OpFunctionCall %void %12
%21 = OpCopyObject %int %int_4
OpLoopMerge %22 %23 None
OpBranchConditional %true %23 %22
%23 = OpLabel
%24 = OpCopyObject %int %int_5
OpBranchConditional %true %18 %22
%22 = OpLabel
OpReturn
OpFunctionEnd
)";
const std::string after =
R"(%1 = OpFunction %void None %11
%17 = OpLabel
OpBranch %18
%18 = OpLabel
%19 = OpCopyObject %int %int_3
%25 = OpCopyObject %int %int_1
OpLoopMerge %22 %23 None
OpBranch %26
%26 = OpLabel
%27 = OpCopyObject %int %int_2
%21 = OpCopyObject %int %int_4
OpBranchConditional %true %23 %22
%23 = OpLabel
%24 = OpCopyObject %int %int_5
OpBranchConditional %true %18 %22
%22 = OpLabel
OpReturn
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(predefs + nonEntryFuncs + before,
predefs + nonEntryFuncs + after,
false, true);
}
TEST_F(InlineTest, SingleBlockLoopCallsMultiBlockCalleeHavingSelectionMerge) {
// This is similar to SingleBlockLoopCallsMultiBlockCallee except
// that calleee block also has a merge instruction in its first block.
// That merge instruction must be an OpSelectionMerge (because the entry
// block of a function can't be the header of a loop since the entry
// block can't be the target of a branch).
//
// In this case the OpLoopMerge can't be placed in the same block as
// the OpSelectionMerge, so inlining must create a new block to contain
// the callee contents.
//
// Additionally, we have two dummy OpCopyObject instructions to prove that
// the OpLoopMerge is moved to the right location.
//
// Also ensure that OpPhis within the cloned callee code are valid.
// We need to test that the predecessor blocks are remapped correctly so that
// dominance rules are satisfied
const std::string predefs =
R"(OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
OpSource OpenCL_C 120
%bool = OpTypeBool
%true = OpConstantTrue %bool
%false = OpConstantFalse %bool
%void = OpTypeVoid
%6 = OpTypeFunction %void
)";
// This callee has multiple blocks, and an OpPhi in the last block
// that references a value from the first block. This tests that
// cloned block IDs are remapped appropriately. The OpPhi dominance
// requires that the remapped %9 must be in a block that dominates
// the remapped %8.
const std::string nonEntryFuncs =
R"(%7 = OpFunction %void None %6
%8 = OpLabel
%9 = OpCopyObject %bool %true
OpSelectionMerge %10 None
OpBranchConditional %true %10 %10
%10 = OpLabel
%11 = OpPhi %bool %9 %8
OpReturn
OpFunctionEnd
)";
const std::string before =
R"(%1 = OpFunction %void None %6
%12 = OpLabel
OpBranch %13
%13 = OpLabel
%14 = OpCopyObject %bool %false
%15 = OpFunctionCall %void %7
OpLoopMerge %16 %13 None
OpBranchConditional %true %13 %16
%16 = OpLabel
OpReturn
OpFunctionEnd
)";
// Note the remapped Phi uses %17 as the parent instead
// of %13, demonstrating that the parent block has been remapped
// correctly.
const std::string after =
R"(%1 = OpFunction %void None %6
%12 = OpLabel
OpBranch %13
%13 = OpLabel
%14 = OpCopyObject %bool %false
OpLoopMerge %16 %13 None
OpBranch %17
%17 = OpLabel
%18 = OpCopyObject %bool %true
OpSelectionMerge %19 None
OpBranchConditional %true %19 %19
%19 = OpLabel
%20 = OpPhi %bool %18 %17
OpBranchConditional %true %13 %16
%16 = OpLabel
OpReturn
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(predefs + nonEntryFuncs + before,
predefs + nonEntryFuncs + after,
false, true);
}
TEST_F(InlineTest,
MultiBlockLoopHeaderCallsFromToMultiBlockCalleeHavingSelectionMerge) {
// This is similar to SingleBlockLoopCallsMultiBlockCalleeHavingSelectionMerge
// but the call is in the header block of a multi block loop.
const std::string predefs =
R"(OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
OpSource OpenCL_C 120
%bool = OpTypeBool
%true = OpConstantTrue %bool
%int = OpTypeInt 32 1
%int_1 = OpConstant %int 1
%int_2 = OpConstant %int 2
%int_3 = OpConstant %int 3
%int_4 = OpConstant %int 4
%int_5 = OpConstant %int 5
%void = OpTypeVoid
%11 = OpTypeFunction %void
)";
const std::string nonEntryFuncs =
R"(%12 = OpFunction %void None %11
%13 = OpLabel
%14 = OpCopyObject %int %int_1
OpSelectionMerge %15 None
OpBranchConditional %true %15 %15
%15 = OpLabel
%16 = OpCopyObject %int %int_2
OpReturn
OpFunctionEnd
)";
const std::string before =
R"(%1 = OpFunction %void None %11
%17 = OpLabel
OpBranch %18
%18 = OpLabel
%19 = OpCopyObject %int %int_3
%20 = OpFunctionCall %void %12
%21 = OpCopyObject %int %int_4
OpLoopMerge %22 %23 None
OpBranchConditional %true %23 %22
%23 = OpLabel
%24 = OpCopyObject %int %int_5
OpBranchConditional %true %18 %22
%22 = OpLabel
OpReturn
OpFunctionEnd
)";
const std::string after =
R"(%1 = OpFunction %void None %11
%17 = OpLabel
OpBranch %18
%18 = OpLabel
%19 = OpCopyObject %int %int_3
OpLoopMerge %22 %23 None
OpBranch %25
%25 = OpLabel
%26 = OpCopyObject %int %int_1
OpSelectionMerge %27 None
OpBranchConditional %true %27 %27
%27 = OpLabel
%28 = OpCopyObject %int %int_2
%21 = OpCopyObject %int %int_4
OpBranchConditional %true %23 %22
%23 = OpLabel
%24 = OpCopyObject %int %int_5
OpBranchConditional %true %18 %22
%22 = OpLabel
OpReturn
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(predefs + nonEntryFuncs + before,
predefs + nonEntryFuncs + after,
false, true);
}
TEST_F(
InlineTest,
SingleBlockLoopCallsMultiBlockCalleeHavingSelectionMergeAndMultiReturns) {
// This is similar to SingleBlockLoopCallsMultiBlockCalleeHavingSelectionMerge
// except that in addition to starting with a selection header, the
// callee also has multi returns.
//
// So now we have to accommodate:
// - The caller's OpLoopMerge (which must move to the first block)
// - The single-trip loop to wrap the multi returns, and
// - The callee's selection merge in its first block.
// Each of these must go into their own blocks.
const std::string predefs =
R"(OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
OpSource OpenCL_C 120
%bool = OpTypeBool
%int = OpTypeInt 32 1
%true = OpConstantTrue %bool
%false = OpConstantFalse %bool
%int_0 = OpConstant %int 0
%int_1 = OpConstant %int 1
%int_2 = OpConstant %int 2
%int_3 = OpConstant %int 3
%int_4 = OpConstant %int 4
%void = OpTypeVoid
%12 = OpTypeFunction %void
)";
const std::string nonEntryFuncs =
R"(%13 = OpFunction %void None %12
%14 = OpLabel
%15 = OpCopyObject %int %int_0
OpReturn
%16 = OpLabel
%17 = OpCopyObject %int %int_1
OpReturn
OpFunctionEnd
)";
const std::string before =
R"(%1 = OpFunction %void None %12
%18 = OpLabel
OpBranch %19
%19 = OpLabel
%20 = OpCopyObject %int %int_2
%21 = OpFunctionCall %void %13
%22 = OpCopyObject %int %int_3
OpLoopMerge %23 %19 None
OpBranchConditional %true %19 %23
%23 = OpLabel
%24 = OpCopyObject %int %int_4
OpReturn
OpFunctionEnd
)";
const std::string after =
R"(%1 = OpFunction %void None %12
%18 = OpLabel
OpBranch %19
%19 = OpLabel
%20 = OpCopyObject %int %int_2
%25 = OpCopyObject %int %int_0
OpLoopMerge %23 %19 None
OpBranch %26
%27 = OpLabel
%28 = OpCopyObject %int %int_1
OpBranch %26
%26 = OpLabel
%22 = OpCopyObject %int %int_3
OpBranchConditional %true %19 %23
%23 = OpLabel
%24 = OpCopyObject %int %int_4
OpReturn
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(predefs + nonEntryFuncs + before,
predefs + nonEntryFuncs + after,
false, true);
}
TEST_F(InlineTest, CalleeWithMultiReturnAndPhiRequiresEntryBlockRemapping) {
// The case from https://github.com/KhronosGroup/SPIRV-Tools/issues/790
//
// The callee has multiple returns, and so must be wrapped with a single-trip
// loop. That code must remap the callee entry block ID to the introduced
// loop body's ID. Otherwise you can get a dominance error in a cloned OpPhi.
const std::string predefs =
R"(OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint GLCompute %1 "main"
OpSource OpenCL_C 120
%int = OpTypeInt 32 1
%int_0 = OpConstant %int 0
%int_1 = OpConstant %int 1
%int_2 = OpConstant %int 2
%int_3 = OpConstant %int 3
%int_4 = OpConstant %int 4
%void = OpTypeVoid
%9 = OpTypeFunction %void
%bool = OpTypeBool
%false = OpConstantFalse %bool
)";
// This callee has multiple returns, and a Phi in the second block referencing
// a value generated in the entry block.
const std::string nonEntryFuncs =
R"(%12 = OpFunction %void None %9
%13 = OpLabel
%14 = OpCopyObject %int %int_0
OpBranch %15
%15 = OpLabel
%16 = OpPhi %int %14 %13
%17 = OpCopyObject %int %int_1
OpReturn
%18 = OpLabel
%19 = OpCopyObject %int %int_2
OpReturn
OpFunctionEnd
)";
const std::string before =
R"(%1 = OpFunction %void None %9
%20 = OpLabel
%21 = OpCopyObject %int %int_3
%22 = OpFunctionCall %void %12
%23 = OpCopyObject %int %int_4
OpReturn
OpFunctionEnd
)";
const std::string after =
R"(%1 = OpFunction %void None %9
%20 = OpLabel
%21 = OpCopyObject %int %int_3
%24 = OpCopyObject %int %int_0
OpBranch %25
%25 = OpLabel
%26 = OpPhi %int %24 %20
%27 = OpCopyObject %int %int_1
OpBranch %28
%29 = OpLabel
%30 = OpCopyObject %int %int_2
OpBranch %28
%28 = OpLabel
%23 = OpCopyObject %int %int_4
OpReturn
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(predefs + nonEntryFuncs + before,
predefs + nonEntryFuncs + after,
false, true);
}
TEST_F(InlineTest, NonInlinableCalleeWithSingleReturn) {
// The case from https://github.com/KhronosGroup/SPIRV-Tools/issues/2018
//
// The callee has a single return, but cannot be inlined because the
// return is inside a loop.
const std::string predefs =
R"(OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %_GLF_color
OpExecutionMode %main OriginUpperLeft
OpSource ESSL 310
OpName %main "main"
OpName %f_ "f("
OpName %i "i"
OpName %_GLF_color "_GLF_color"
OpDecorate %_GLF_color Location 0
%void = OpTypeVoid
%7 = OpTypeFunction %void
%float = OpTypeFloat 32
%9 = OpTypeFunction %float
%float_1 = OpConstant %float 1
%bool = OpTypeBool
%false = OpConstantFalse %bool
%int = OpTypeInt 32 1
%_ptr_Function_int = OpTypePointer Function %int
%int_0 = OpConstant %int 0
%int_1 = OpConstant %int 1
%v4float = OpTypeVector %float 4
%_ptr_Output_v4float = OpTypePointer Output %v4float
%_GLF_color = OpVariable %_ptr_Output_v4float Output
%float_0 = OpConstant %float 0
%20 = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0
%21 = OpConstantComposite %v4float %float_0 %float_1 %float_0 %float_1
)";
const std::string caller =
R"(%main = OpFunction %void None %7
%22 = OpLabel
%i = OpVariable %_ptr_Function_int Function
OpStore %i %int_0
OpBranch %23
%23 = OpLabel
OpLoopMerge %24 %25 None
OpBranch %26
%26 = OpLabel
%27 = OpLoad %int %i
%28 = OpSLessThan %bool %27 %int_1
OpBranchConditional %28 %29 %24
%29 = OpLabel
OpStore %_GLF_color %20
%30 = OpFunctionCall %float %f_
OpBranch %25
%25 = OpLabel
%31 = OpLoad %int %i
%32 = OpIAdd %int %31 %int_1
OpStore %i %32
OpBranch %23
%24 = OpLabel
OpStore %_GLF_color %21
OpReturn
OpFunctionEnd
)";
const std::string callee =
R"(%f_ = OpFunction %float None %9
%33 = OpLabel
OpBranch %34
%34 = OpLabel
OpLoopMerge %35 %36 None
OpBranch %37
%37 = OpLabel
OpReturnValue %float_1
%36 = OpLabel
OpBranch %34
%35 = OpLabel
OpUnreachable
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(
predefs + caller + callee, predefs + caller + callee, false, true);
}
TEST_F(InlineTest, CalleeWithSingleReturnNeedsSingleTripLoopWrapper) {
// The case from https://github.com/KhronosGroup/SPIRV-Tools/issues/2018
//
// The callee has a single return, but needs single-trip loop wrapper
// to be inlined because the return is in a selection structure.
const std::string predefs =
R"(OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %_GLF_color
OpExecutionMode %main OriginUpperLeft
OpSource ESSL 310
OpName %main "main"
OpName %f_ "f("
OpName %i "i"
OpName %_GLF_color "_GLF_color"
OpDecorate %_GLF_color Location 0
%void = OpTypeVoid
%7 = OpTypeFunction %void
%float = OpTypeFloat 32
%9 = OpTypeFunction %float
%float_1 = OpConstant %float 1
%bool = OpTypeBool
%false = OpConstantFalse %bool
%true = OpConstantTrue %bool
%int = OpTypeInt 32 1
%_ptr_Function_int = OpTypePointer Function %int
%int_0 = OpConstant %int 0
%int_1 = OpConstant %int 1
%v4float = OpTypeVector %float 4
%_ptr_Output_v4float = OpTypePointer Output %v4float
%_GLF_color = OpVariable %_ptr_Output_v4float Output
%float_0 = OpConstant %float 0
%21 = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0
%22 = OpConstantComposite %v4float %float_0 %float_1 %float_0 %float_1
)";
const std::string new_predefs =
R"(%_ptr_Function_float = OpTypePointer Function %float
)";
const std::string main_before =
R"(%main = OpFunction %void None %7
%23 = OpLabel
%i = OpVariable %_ptr_Function_int Function
OpStore %i %int_0
OpBranch %24
%24 = OpLabel
OpLoopMerge %25 %26 None
OpBranch %27
%27 = OpLabel
%28 = OpLoad %int %i
%29 = OpSLessThan %bool %28 %int_1
OpBranchConditional %29 %30 %25
%30 = OpLabel
OpStore %_GLF_color %21
%31 = OpFunctionCall %float %f_
OpBranch %26
%26 = OpLabel
%32 = OpLoad %int %i
%33 = OpIAdd %int %32 %int_1
OpStore %i %33
OpBranch %24
%25 = OpLabel
OpStore %_GLF_color %22
OpReturn
OpFunctionEnd
)";
const std::string main_after =
R"(%main = OpFunction %void None %7
%23 = OpLabel
%38 = OpVariable %_ptr_Function_float Function
%i = OpVariable %_ptr_Function_int Function
OpStore %i %int_0
OpBranch %24
%24 = OpLabel
OpLoopMerge %25 %26 None
OpBranch %27
%27 = OpLabel
%28 = OpLoad %int %i
%29 = OpSLessThan %bool %28 %int_1
OpBranchConditional %29 %30 %25
%30 = OpLabel
OpStore %_GLF_color %21
OpBranch %39
%39 = OpLabel
OpLoopMerge %40 %41 None
OpBranch %42
%42 = OpLabel
OpSelectionMerge %43 None
OpBranchConditional %true %44 %43
%44 = OpLabel
OpStore %38 %float_1
OpBranch %40
%43 = OpLabel
OpStore %38 %float_1
OpBranch %40
%41 = OpLabel
OpBranchConditional %false %39 %40
%40 = OpLabel
%31 = OpLoad %float %38
OpBranch %26
%26 = OpLabel
%32 = OpLoad %int %i
%33 = OpIAdd %int %32 %int_1
OpStore %i %33
OpBranch %24
%25 = OpLabel
OpStore %_GLF_color %22
OpReturn
OpFunctionEnd
)";
const std::string callee =
R"(%f_ = OpFunction %float None %9
%34 = OpLabel
OpSelectionMerge %35 None
OpBranchConditional %true %36 %35
%36 = OpLabel
OpReturnValue %float_1
%35 = OpLabel
OpReturnValue %float_1
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(
predefs + main_before + callee,
predefs + new_predefs + main_after + callee, false, true);
}
TEST_F(InlineTest, Decorated1) {
// Same test as Simple with the difference
// that OpFAdd in the outlined function is
// decorated with RelaxedPrecision
// Expected result is an equal decoration
// of the corresponding inlined instruction
//
// #version 140
//
// in vec4 BaseColor;
//
// float foo(vec4 bar)
// {
// return bar.x + bar.y;
// }
//
// void main()
// {
// vec4 color = vec4(foo(BaseColor));
// gl_FragColor = color;
// }
const std::string predefs =
R"(OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %BaseColor %gl_FragColor
OpExecutionMode %main OriginUpperLeft
OpSource GLSL 140
OpName %main "main"
OpName %foo_vf4_ "foo(vf4;"
OpName %bar "bar"
OpName %color "color"
OpName %BaseColor "BaseColor"
OpName %param "param"
OpName %gl_FragColor "gl_FragColor"
OpDecorate %9 RelaxedPrecision
)";
const std::string before =
R"(%void = OpTypeVoid
%11 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%_ptr_Function_v4float = OpTypePointer Function %v4float
%15 = OpTypeFunction %float %_ptr_Function_v4float
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%_ptr_Function_float = OpTypePointer Function %float
%uint_1 = OpConstant %uint 1
%_ptr_Input_v4float = OpTypePointer Input %v4float
%BaseColor = OpVariable %_ptr_Input_v4float Input
%_ptr_Output_v4float = OpTypePointer Output %v4float
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
%main = OpFunction %void None %11
%22 = OpLabel
%color = OpVariable %_ptr_Function_v4float Function
%param = OpVariable %_ptr_Function_v4float Function
%23 = OpLoad %v4float %BaseColor
OpStore %param %23
%24 = OpFunctionCall %float %foo_vf4_ %param
%25 = OpCompositeConstruct %v4float %24 %24 %24 %24
OpStore %color %25
%26 = OpLoad %v4float %color
OpStore %gl_FragColor %26
OpReturn
OpFunctionEnd
)";
const std::string after =
R"(OpDecorate %37 RelaxedPrecision
%void = OpTypeVoid
%11 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%_ptr_Function_v4float = OpTypePointer Function %v4float
%15 = OpTypeFunction %float %_ptr_Function_v4float
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%_ptr_Function_float = OpTypePointer Function %float
%uint_1 = OpConstant %uint 1
%_ptr_Input_v4float = OpTypePointer Input %v4float
%BaseColor = OpVariable %_ptr_Input_v4float Input
%_ptr_Output_v4float = OpTypePointer Output %v4float
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
%main = OpFunction %void None %11
%22 = OpLabel
%32 = OpVariable %_ptr_Function_float Function
%color = OpVariable %_ptr_Function_v4float Function
%param = OpVariable %_ptr_Function_v4float Function
%23 = OpLoad %v4float %BaseColor
OpStore %param %23
%33 = OpAccessChain %_ptr_Function_float %param %uint_0
%34 = OpLoad %float %33
%35 = OpAccessChain %_ptr_Function_float %param %uint_1
%36 = OpLoad %float %35
%37 = OpFAdd %float %34 %36
OpStore %32 %37
%24 = OpLoad %float %32
%25 = OpCompositeConstruct %v4float %24 %24 %24 %24
OpStore %color %25
%26 = OpLoad %v4float %color
OpStore %gl_FragColor %26
OpReturn
OpFunctionEnd
)";
const std::string nonEntryFuncs =
R"(%foo_vf4_ = OpFunction %float None %15
%bar = OpFunctionParameter %_ptr_Function_v4float
%27 = OpLabel
%28 = OpAccessChain %_ptr_Function_float %bar %uint_0
%29 = OpLoad %float %28
%30 = OpAccessChain %_ptr_Function_float %bar %uint_1
%31 = OpLoad %float %30
%9 = OpFAdd %float %29 %31
OpReturnValue %9
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(predefs + before + nonEntryFuncs,
predefs + after + nonEntryFuncs,
false, true);
}
TEST_F(InlineTest, Decorated2) {
// Same test as Simple with the difference
// that the Result <id> of the outlined OpFunction
// is decorated with RelaxedPrecision
// Expected result is an equal decoration
// of the created return variable
//
// #version 140
//
// in vec4 BaseColor;
//
// float foo(vec4 bar)
// {
// return bar.x + bar.y;
// }
//
// void main()
// {
// vec4 color = vec4(foo(BaseColor));
// gl_FragColor = color;
// }
const std::string predefs =
R"(OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %BaseColor %gl_FragColor
OpExecutionMode %main OriginUpperLeft
OpSource GLSL 140
OpName %main "main"
OpName %foo_vf4_ "foo(vf4;"
OpName %bar "bar"
OpName %color "color"
OpName %BaseColor "BaseColor"
OpName %param "param"
OpName %gl_FragColor "gl_FragColor"
OpDecorate %foo_vf4_ RelaxedPrecision
)";
const std::string before =
R"(%void = OpTypeVoid
%10 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%_ptr_Function_v4float = OpTypePointer Function %v4float
%14 = OpTypeFunction %float %_ptr_Function_v4float
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%_ptr_Function_float = OpTypePointer Function %float
%uint_1 = OpConstant %uint 1
%_ptr_Input_v4float = OpTypePointer Input %v4float
%BaseColor = OpVariable %_ptr_Input_v4float Input
%_ptr_Output_v4float = OpTypePointer Output %v4float
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
%main = OpFunction %void None %10
%21 = OpLabel
%color = OpVariable %_ptr_Function_v4float Function
%param = OpVariable %_ptr_Function_v4float Function
%22 = OpLoad %v4float %BaseColor
OpStore %param %22
%23 = OpFunctionCall %float %foo_vf4_ %param
%24 = OpCompositeConstruct %v4float %23 %23 %23 %23
OpStore %color %24
%25 = OpLoad %v4float %color
OpStore %gl_FragColor %25
OpReturn
OpFunctionEnd
)";
const std::string after =
R"(OpDecorate %32 RelaxedPrecision
%void = OpTypeVoid
%10 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%_ptr_Function_v4float = OpTypePointer Function %v4float
%14 = OpTypeFunction %float %_ptr_Function_v4float
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%_ptr_Function_float = OpTypePointer Function %float
%uint_1 = OpConstant %uint 1
%_ptr_Input_v4float = OpTypePointer Input %v4float
%BaseColor = OpVariable %_ptr_Input_v4float Input
%_ptr_Output_v4float = OpTypePointer Output %v4float
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
%main = OpFunction %void None %10
%21 = OpLabel
%32 = OpVariable %_ptr_Function_float Function
%color = OpVariable %_ptr_Function_v4float Function
%param = OpVariable %_ptr_Function_v4float Function
%22 = OpLoad %v4float %BaseColor
OpStore %param %22
%33 = OpAccessChain %_ptr_Function_float %param %uint_0
%34 = OpLoad %float %33
%35 = OpAccessChain %_ptr_Function_float %param %uint_1
%36 = OpLoad %float %35
%37 = OpFAdd %float %34 %36
OpStore %32 %37
%23 = OpLoad %float %32
%24 = OpCompositeConstruct %v4float %23 %23 %23 %23
OpStore %color %24
%25 = OpLoad %v4float %color
OpStore %gl_FragColor %25
OpReturn
OpFunctionEnd
)";
const std::string nonEntryFuncs =
R"(%foo_vf4_ = OpFunction %float None %14
%bar = OpFunctionParameter %_ptr_Function_v4float
%26 = OpLabel
%27 = OpAccessChain %_ptr_Function_float %bar %uint_0
%28 = OpLoad %float %27
%29 = OpAccessChain %_ptr_Function_float %bar %uint_1
%30 = OpLoad %float %29
%31 = OpFAdd %float %28 %30
OpReturnValue %31
OpFunctionEnd
)";
SinglePassRunAndCheck<InlineExhaustivePass>(predefs + before + nonEntryFuncs,
predefs + after + nonEntryFuncs,
false, true);
}
TEST_F(InlineTest, DeleteName) {
// Test that the name of the result id of the call is deleted.
const std::string before =
R"(
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint Vertex %main "main"
OpName %main "main"
OpName %main_entry "main_entry"
OpName %foo_result "foo_result"
OpName %void_fn "void_fn"
OpName %foo "foo"
OpName %foo_entry "foo_entry"
%void = OpTypeVoid
%void_fn = OpTypeFunction %void
%foo = OpFunction %void None %void_fn
%foo_entry = OpLabel
OpReturn
OpFunctionEnd
%main = OpFunction %void None %void_fn
%main_entry = OpLabel
%foo_result = OpFunctionCall %void %foo
OpReturn
OpFunctionEnd
)";
const std::string after =
R"(OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint Vertex %main "main"
OpName %main "main"
OpName %main_entry "main_entry"
OpName %void_fn "void_fn"
OpName %foo "foo"
OpName %foo_entry "foo_entry"
%void = OpTypeVoid
%void_fn = OpTypeFunction %void
%foo = OpFunction %void None %void_fn
%foo_entry = OpLabel
OpReturn
OpFunctionEnd
%main = OpFunction %void None %void_fn
%main_entry = OpLabel
OpReturn
OpFunctionEnd
)";