mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-12-26 17:51:02 +00:00
752 lines
18 KiB
C++
752 lines
18 KiB
C++
// 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 <string>
|
|
|
|
#include "test/opt/pass_fixture.h"
|
|
#include "test/opt/pass_utils.h"
|
|
|
|
namespace spvtools {
|
|
namespace opt {
|
|
namespace {
|
|
|
|
using BlockMergeTest = PassTest<::testing::Test>;
|
|
|
|
TEST_F(BlockMergeTest, Simple) {
|
|
// Note: SPIR-V hand edited to insert block boundary
|
|
// between two statements in main.
|
|
//
|
|
// #version 140
|
|
//
|
|
// in vec4 BaseColor;
|
|
//
|
|
// void main()
|
|
// {
|
|
// vec4 v = BaseColor;
|
|
// gl_FragColor = v;
|
|
// }
|
|
|
|
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 %v "v"
|
|
OpName %BaseColor "BaseColor"
|
|
OpName %gl_FragColor "gl_FragColor"
|
|
%void = OpTypeVoid
|
|
%7 = OpTypeFunction %void
|
|
%float = OpTypeFloat 32
|
|
%v4float = OpTypeVector %float 4
|
|
%_ptr_Function_v4float = OpTypePointer Function %v4float
|
|
%_ptr_Input_v4float = OpTypePointer Input %v4float
|
|
%BaseColor = OpVariable %_ptr_Input_v4float Input
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
|
|
)";
|
|
|
|
const std::string before =
|
|
R"(%main = OpFunction %void None %7
|
|
%13 = OpLabel
|
|
%v = OpVariable %_ptr_Function_v4float Function
|
|
%14 = OpLoad %v4float %BaseColor
|
|
OpStore %v %14
|
|
OpBranch %15
|
|
%15 = OpLabel
|
|
%16 = OpLoad %v4float %v
|
|
OpStore %gl_FragColor %16
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
const std::string after =
|
|
R"(%main = OpFunction %void None %7
|
|
%13 = OpLabel
|
|
%v = OpVariable %_ptr_Function_v4float Function
|
|
%14 = OpLoad %v4float %BaseColor
|
|
OpStore %v %14
|
|
%16 = OpLoad %v4float %v
|
|
OpStore %gl_FragColor %16
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndCheck<BlockMergePass>(predefs + before, predefs + after, true,
|
|
true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, EmptyBlock) {
|
|
// Note: SPIR-V hand edited to insert empty block
|
|
// after two statements in main.
|
|
//
|
|
// #version 140
|
|
//
|
|
// in vec4 BaseColor;
|
|
//
|
|
// void main()
|
|
// {
|
|
// vec4 v = BaseColor;
|
|
// gl_FragColor = v;
|
|
// }
|
|
|
|
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 %v "v"
|
|
OpName %BaseColor "BaseColor"
|
|
OpName %gl_FragColor "gl_FragColor"
|
|
%void = OpTypeVoid
|
|
%7 = OpTypeFunction %void
|
|
%float = OpTypeFloat 32
|
|
%v4float = OpTypeVector %float 4
|
|
%_ptr_Function_v4float = OpTypePointer Function %v4float
|
|
%_ptr_Input_v4float = OpTypePointer Input %v4float
|
|
%BaseColor = OpVariable %_ptr_Input_v4float Input
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
|
|
)";
|
|
|
|
const std::string before =
|
|
R"(%main = OpFunction %void None %7
|
|
%13 = OpLabel
|
|
%v = OpVariable %_ptr_Function_v4float Function
|
|
%14 = OpLoad %v4float %BaseColor
|
|
OpStore %v %14
|
|
OpBranch %15
|
|
%15 = OpLabel
|
|
%16 = OpLoad %v4float %v
|
|
OpStore %gl_FragColor %16
|
|
OpBranch %17
|
|
%17 = OpLabel
|
|
OpBranch %18
|
|
%18 = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
const std::string after =
|
|
R"(%main = OpFunction %void None %7
|
|
%13 = OpLabel
|
|
%v = OpVariable %_ptr_Function_v4float Function
|
|
%14 = OpLoad %v4float %BaseColor
|
|
OpStore %v %14
|
|
%16 = OpLoad %v4float %v
|
|
OpStore %gl_FragColor %16
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndCheck<BlockMergePass>(predefs + before, predefs + after, true,
|
|
true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, NestedInControlFlow) {
|
|
// Note: SPIR-V hand edited to insert block boundary
|
|
// between OpFMul and OpStore in then-part.
|
|
//
|
|
// #version 140
|
|
// in vec4 BaseColor;
|
|
//
|
|
// layout(std140) uniform U_t
|
|
// {
|
|
// bool g_B ;
|
|
// } ;
|
|
//
|
|
// void main()
|
|
// {
|
|
// vec4 v = BaseColor;
|
|
// if (g_B)
|
|
// vec4 v = v * 0.25;
|
|
// gl_FragColor = v;
|
|
// }
|
|
|
|
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 %v "v"
|
|
OpName %BaseColor "BaseColor"
|
|
OpName %U_t "U_t"
|
|
OpMemberName %U_t 0 "g_B"
|
|
OpName %_ ""
|
|
OpName %v_0 "v"
|
|
OpName %gl_FragColor "gl_FragColor"
|
|
OpMemberDecorate %U_t 0 Offset 0
|
|
OpDecorate %U_t Block
|
|
OpDecorate %_ DescriptorSet 0
|
|
%void = OpTypeVoid
|
|
%10 = OpTypeFunction %void
|
|
%float = OpTypeFloat 32
|
|
%v4float = OpTypeVector %float 4
|
|
%_ptr_Function_v4float = OpTypePointer Function %v4float
|
|
%_ptr_Input_v4float = OpTypePointer Input %v4float
|
|
%BaseColor = OpVariable %_ptr_Input_v4float Input
|
|
%uint = OpTypeInt 32 0
|
|
%U_t = OpTypeStruct %uint
|
|
%_ptr_Uniform_U_t = OpTypePointer Uniform %U_t
|
|
%_ = OpVariable %_ptr_Uniform_U_t Uniform
|
|
%int = OpTypeInt 32 1
|
|
%int_0 = OpConstant %int 0
|
|
%_ptr_Uniform_uint = OpTypePointer Uniform %uint
|
|
%bool = OpTypeBool
|
|
%uint_0 = OpConstant %uint 0
|
|
%float_0_25 = OpConstant %float 0.25
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
|
|
)";
|
|
|
|
const std::string before =
|
|
R"(%main = OpFunction %void None %10
|
|
%24 = OpLabel
|
|
%v = OpVariable %_ptr_Function_v4float Function
|
|
%v_0 = OpVariable %_ptr_Function_v4float Function
|
|
%25 = OpLoad %v4float %BaseColor
|
|
OpStore %v %25
|
|
%26 = OpAccessChain %_ptr_Uniform_uint %_ %int_0
|
|
%27 = OpLoad %uint %26
|
|
%28 = OpINotEqual %bool %27 %uint_0
|
|
OpSelectionMerge %29 None
|
|
OpBranchConditional %28 %30 %29
|
|
%30 = OpLabel
|
|
%31 = OpLoad %v4float %v
|
|
%32 = OpVectorTimesScalar %v4float %31 %float_0_25
|
|
OpBranch %33
|
|
%33 = OpLabel
|
|
OpStore %v_0 %32
|
|
OpBranch %29
|
|
%29 = OpLabel
|
|
%34 = OpLoad %v4float %v
|
|
OpStore %gl_FragColor %34
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
const std::string after =
|
|
R"(%main = OpFunction %void None %10
|
|
%24 = OpLabel
|
|
%v = OpVariable %_ptr_Function_v4float Function
|
|
%v_0 = OpVariable %_ptr_Function_v4float Function
|
|
%25 = OpLoad %v4float %BaseColor
|
|
OpStore %v %25
|
|
%26 = OpAccessChain %_ptr_Uniform_uint %_ %int_0
|
|
%27 = OpLoad %uint %26
|
|
%28 = OpINotEqual %bool %27 %uint_0
|
|
OpSelectionMerge %29 None
|
|
OpBranchConditional %28 %30 %29
|
|
%30 = OpLabel
|
|
%31 = OpLoad %v4float %v
|
|
%32 = OpVectorTimesScalar %v4float %31 %float_0_25
|
|
OpStore %v_0 %32
|
|
OpBranch %29
|
|
%29 = OpLabel
|
|
%34 = OpLoad %v4float %v
|
|
OpStore %gl_FragColor %34
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndCheck<BlockMergePass>(predefs + before, predefs + after, true,
|
|
true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, PhiInSuccessorOfMergedBlock) {
|
|
const std::string text = R"(
|
|
; CHECK: OpSelectionMerge [[merge:%\w+]] None
|
|
; CHECK-NEXT: OpBranchConditional {{%\w+}} [[then:%\w+]] [[else:%\w+]]
|
|
; CHECK: [[then]] = OpLabel
|
|
; CHECK-NEXT: OpBranch [[merge]]
|
|
; CHECK: [[else]] = OpLabel
|
|
; CHECK-NEXT: OpBranch [[merge]]
|
|
; CHECK: [[merge]] = OpLabel
|
|
; CHECK-NEXT: OpPhi {{%\w+}} %true [[then]] %false [[else]]
|
|
OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %func "func"
|
|
OpExecutionMode %func OriginUpperLeft
|
|
%void = OpTypeVoid
|
|
%bool = OpTypeBool
|
|
%true = OpConstantTrue %bool
|
|
%false = OpConstantFalse %bool
|
|
%functy = OpTypeFunction %void
|
|
%func = OpFunction %void None %functy
|
|
%entry = OpLabel
|
|
OpSelectionMerge %merge None
|
|
OpBranchConditional %true %then %else
|
|
%then = OpLabel
|
|
OpBranch %then_next
|
|
%then_next = OpLabel
|
|
OpBranch %merge
|
|
%else = OpLabel
|
|
OpBranch %merge
|
|
%merge = OpLabel
|
|
%phi = OpPhi %bool %true %then_next %false %else
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndMatch<BlockMergePass>(text, true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, UpdateMergeInstruction) {
|
|
const std::string text = R"(
|
|
; CHECK: OpSelectionMerge [[merge:%\w+]] None
|
|
; CHECK-NEXT: OpBranchConditional {{%\w+}} [[then:%\w+]] [[else:%\w+]]
|
|
; CHECK: [[then]] = OpLabel
|
|
; CHECK-NEXT: OpBranch [[merge]]
|
|
; CHECK: [[else]] = OpLabel
|
|
; CHECK-NEXT: OpBranch [[merge]]
|
|
; CHECK: [[merge]] = OpLabel
|
|
; CHECK-NEXT: OpReturn
|
|
OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %func "func"
|
|
OpExecutionMode %func OriginUpperLeft
|
|
%void = OpTypeVoid
|
|
%bool = OpTypeBool
|
|
%true = OpConstantTrue %bool
|
|
%false = OpConstantFalse %bool
|
|
%functy = OpTypeFunction %void
|
|
%func = OpFunction %void None %functy
|
|
%entry = OpLabel
|
|
OpSelectionMerge %real_merge None
|
|
OpBranchConditional %true %then %else
|
|
%then = OpLabel
|
|
OpBranch %merge
|
|
%else = OpLabel
|
|
OpBranch %merge
|
|
%merge = OpLabel
|
|
OpBranch %real_merge
|
|
%real_merge = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndMatch<BlockMergePass>(text, true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, TwoMergeBlocksCannotBeMerged) {
|
|
const std::string text = R"(
|
|
; CHECK: OpSelectionMerge [[outer_merge:%\w+]] None
|
|
; CHECK: OpSelectionMerge [[inner_merge:%\w+]] None
|
|
; CHECK: [[inner_merge]] = OpLabel
|
|
; CHECK-NEXT: OpBranch [[outer_merge]]
|
|
; CHECK: [[outer_merge]] = OpLabel
|
|
; CHECK-NEXT: OpReturn
|
|
OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %func "func"
|
|
OpExecutionMode %func OriginUpperLeft
|
|
%void = OpTypeVoid
|
|
%bool = OpTypeBool
|
|
%true = OpConstantTrue %bool
|
|
%false = OpConstantFalse %bool
|
|
%functy = OpTypeFunction %void
|
|
%func = OpFunction %void None %functy
|
|
%entry = OpLabel
|
|
OpSelectionMerge %outer_merge None
|
|
OpBranchConditional %true %then %else
|
|
%then = OpLabel
|
|
OpBranch %inner_header
|
|
%else = OpLabel
|
|
OpBranch %inner_header
|
|
%inner_header = OpLabel
|
|
OpSelectionMerge %inner_merge None
|
|
OpBranchConditional %true %inner_then %inner_else
|
|
%inner_then = OpLabel
|
|
OpBranch %inner_merge
|
|
%inner_else = OpLabel
|
|
OpBranch %inner_merge
|
|
%inner_merge = OpLabel
|
|
OpBranch %outer_merge
|
|
%outer_merge = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndMatch<BlockMergePass>(text, true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, MergeContinue) {
|
|
const std::string text = R"(
|
|
; CHECK: OpBranch [[header:%\w+]]
|
|
; CHECK: [[header]] = OpLabel
|
|
; CHECK-NEXT: OpLogicalAnd
|
|
; CHECK-NEXT: OpLoopMerge {{%\w+}} [[header]] None
|
|
; CHECK-NEXT: OpBranch [[header]]
|
|
OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %func "func"
|
|
OpExecutionMode %func OriginUpperLeft
|
|
%void = OpTypeVoid
|
|
%bool = OpTypeBool
|
|
%true = OpConstantTrue %bool
|
|
%false = OpConstantFalse %bool
|
|
%functy = OpTypeFunction %void
|
|
%func = OpFunction %void None %functy
|
|
%entry = OpLabel
|
|
OpBranch %header
|
|
%header = OpLabel
|
|
OpLoopMerge %merge %continue None
|
|
OpBranch %continue
|
|
%continue = OpLabel
|
|
%op = OpLogicalAnd %bool %true %false
|
|
OpBranch %header
|
|
%merge = OpLabel
|
|
OpUnreachable
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndMatch<BlockMergePass>(text, true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, TwoHeadersCannotBeMerged) {
|
|
const std::string text = R"(
|
|
; CHECK: OpBranch [[loop_header:%\w+]]
|
|
; CHECK: [[loop_header]] = OpLabel
|
|
; CHECK-NEXT: OpLoopMerge
|
|
; CHECK-NEXT: OpBranch [[if_header:%\w+]]
|
|
; CHECK: [[if_header]] = OpLabel
|
|
; CHECK-NEXT: OpSelectionMerge
|
|
OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %func "func"
|
|
OpExecutionMode %func OriginUpperLeft
|
|
%void = OpTypeVoid
|
|
%bool = OpTypeBool
|
|
%true = OpConstantTrue %bool
|
|
%false = OpConstantFalse %bool
|
|
%functy = OpTypeFunction %void
|
|
%func = OpFunction %void None %functy
|
|
%entry = OpLabel
|
|
OpBranch %header
|
|
%header = OpLabel
|
|
OpLoopMerge %merge %continue None
|
|
OpBranch %inner_header
|
|
%inner_header = OpLabel
|
|
OpSelectionMerge %continue None
|
|
OpBranchConditional %true %then %continue
|
|
%then = OpLabel
|
|
OpBranch %continue
|
|
%continue = OpLabel
|
|
OpBranchConditional %false %merge %header
|
|
%merge = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndMatch<BlockMergePass>(text, true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, RemoveStructuredDeclaration) {
|
|
// Note: SPIR-V hand edited remove dead branch and add block
|
|
// before continue block
|
|
//
|
|
// #version 140
|
|
// in vec4 BaseColor;
|
|
//
|
|
// void main()
|
|
// {
|
|
// while (true) {
|
|
// break;
|
|
// }
|
|
// gl_FragColor = BaseColor;
|
|
// }
|
|
|
|
const std::string assembly =
|
|
R"(
|
|
; CHECK: OpLabel
|
|
; CHECK: [[header:%\w+]] = OpLabel
|
|
; CHECK-NOT: OpLoopMerge
|
|
; CHECK: OpReturn
|
|
; CHECK: [[continue:%\w+]] = OpLabel
|
|
; CHECK-NEXT: OpBranch [[header]]
|
|
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %main "main" %gl_FragColor %BaseColor
|
|
OpExecutionMode %main OriginUpperLeft
|
|
OpSource GLSL 140
|
|
OpName %main "main"
|
|
OpName %gl_FragColor "gl_FragColor"
|
|
OpName %BaseColor "BaseColor"
|
|
%void = OpTypeVoid
|
|
%6 = OpTypeFunction %void
|
|
%bool = OpTypeBool
|
|
%true = OpConstantTrue %bool
|
|
%float = OpTypeFloat 32
|
|
%v4float = OpTypeVector %float 4
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%gl_FragColor = OpVariable %_ptr_Output_v4float Output
|
|
%_ptr_Input_v4float = OpTypePointer Input %v4float
|
|
%BaseColor = OpVariable %_ptr_Input_v4float Input
|
|
%main = OpFunction %void None %6
|
|
%13 = OpLabel
|
|
OpBranch %14
|
|
%14 = OpLabel
|
|
OpLoopMerge %15 %16 None
|
|
OpBranch %17
|
|
%17 = OpLabel
|
|
OpBranch %15
|
|
%18 = OpLabel
|
|
OpBranch %16
|
|
%16 = OpLabel
|
|
OpBranch %14
|
|
%15 = OpLabel
|
|
%19 = OpLoad %v4float %BaseColor
|
|
OpStore %gl_FragColor %19
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndMatch<BlockMergePass>(assembly, true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, DontMergeKill) {
|
|
const std::string text = R"(
|
|
; CHECK: OpLoopMerge [[merge:%\w+]] [[cont:%\w+]] None
|
|
; CHECK-NEXT: OpBranch [[ret:%\w+]]
|
|
; CHECK: [[ret:%\w+]] = OpLabel
|
|
; CHECK-NEXT: OpKill
|
|
; CHECK-DAG: [[cont]] = OpLabel
|
|
; CHECK-DAG: [[merge]] = OpLabel
|
|
OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %func "func"
|
|
OpExecutionMode %func OriginUpperLeft
|
|
%void = OpTypeVoid
|
|
%bool = OpTypeBool
|
|
%functy = OpTypeFunction %void
|
|
%func = OpFunction %void None %functy
|
|
%1 = OpLabel
|
|
OpBranch %2
|
|
%2 = OpLabel
|
|
OpLoopMerge %3 %4 None
|
|
OpBranch %5
|
|
%5 = OpLabel
|
|
OpKill
|
|
%4 = OpLabel
|
|
OpBranch %2
|
|
%3 = OpLabel
|
|
OpUnreachable
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndMatch<BlockMergePass>(text, true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, DontMergeUnreachable) {
|
|
const std::string text = R"(
|
|
; CHECK: OpLoopMerge [[merge:%\w+]] [[cont:%\w+]] None
|
|
; CHECK-NEXT: OpBranch [[ret:%\w+]]
|
|
; CHECK: [[ret:%\w+]] = OpLabel
|
|
; CHECK-NEXT: OpUnreachable
|
|
; CHECK-DAG: [[cont]] = OpLabel
|
|
; CHECK-DAG: [[merge]] = OpLabel
|
|
OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %func "func"
|
|
OpExecutionMode %func OriginUpperLeft
|
|
%void = OpTypeVoid
|
|
%bool = OpTypeBool
|
|
%functy = OpTypeFunction %void
|
|
%func = OpFunction %void None %functy
|
|
%1 = OpLabel
|
|
OpBranch %2
|
|
%2 = OpLabel
|
|
OpLoopMerge %3 %4 None
|
|
OpBranch %5
|
|
%5 = OpLabel
|
|
OpUnreachable
|
|
%4 = OpLabel
|
|
OpBranch %2
|
|
%3 = OpLabel
|
|
OpUnreachable
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndMatch<BlockMergePass>(text, true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, DontMergeReturn) {
|
|
const std::string text = R"(
|
|
; CHECK: OpLoopMerge [[merge:%\w+]] [[cont:%\w+]] None
|
|
; CHECK-NEXT: OpBranch [[ret:%\w+]]
|
|
; CHECK: [[ret:%\w+]] = OpLabel
|
|
; CHECK-NEXT: OpReturn
|
|
; CHECK-DAG: [[cont]] = OpLabel
|
|
; CHECK-DAG: [[merge]] = OpLabel
|
|
OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %func "func"
|
|
OpExecutionMode %func OriginUpperLeft
|
|
%void = OpTypeVoid
|
|
%bool = OpTypeBool
|
|
%functy = OpTypeFunction %void
|
|
%func = OpFunction %void None %functy
|
|
%1 = OpLabel
|
|
OpBranch %2
|
|
%2 = OpLabel
|
|
OpLoopMerge %3 %4 None
|
|
OpBranch %5
|
|
%5 = OpLabel
|
|
OpReturn
|
|
%4 = OpLabel
|
|
OpBranch %2
|
|
%3 = OpLabel
|
|
OpUnreachable
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndMatch<BlockMergePass>(text, true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, DontMergeSwitch) {
|
|
const std::string text = R"(
|
|
; CHECK: OpLoopMerge [[merge:%\w+]] [[cont:%\w+]] None
|
|
; CHECK-NEXT: OpBranch [[ret:%\w+]]
|
|
; CHECK: [[ret:%\w+]] = OpLabel
|
|
; CHECK-NEXT: OpSwitch
|
|
; CHECK-DAG: [[cont]] = OpLabel
|
|
; CHECK-DAG: [[merge]] = OpLabel
|
|
OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %func "func"
|
|
OpExecutionMode %func OriginUpperLeft
|
|
%void = OpTypeVoid
|
|
%bool = OpTypeBool
|
|
%int = OpTypeInt 32 1
|
|
%int_0 = OpConstant %int 0
|
|
%functy = OpTypeFunction %void
|
|
%func = OpFunction %void None %functy
|
|
%1 = OpLabel
|
|
OpBranch %2
|
|
%2 = OpLabel
|
|
OpLoopMerge %3 %4 None
|
|
OpBranch %5
|
|
%5 = OpLabel
|
|
OpSwitch %int_0 %6
|
|
%6 = OpLabel
|
|
OpReturn
|
|
%4 = OpLabel
|
|
OpBranch %2
|
|
%3 = OpLabel
|
|
OpUnreachable
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndMatch<BlockMergePass>(text, true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, DontMergeReturnValue) {
|
|
const std::string text = R"(
|
|
; CHECK: OpLoopMerge [[merge:%\w+]] [[cont:%\w+]] None
|
|
; CHECK-NEXT: OpBranch [[ret:%\w+]]
|
|
; CHECK: [[ret:%\w+]] = OpLabel
|
|
; CHECK-NEXT: OpReturn
|
|
; CHECK-DAG: [[cont]] = OpLabel
|
|
; CHECK-DAG: [[merge]] = OpLabel
|
|
OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %func "func"
|
|
OpExecutionMode %func OriginUpperLeft
|
|
%void = OpTypeVoid
|
|
%bool = OpTypeBool
|
|
%functy = OpTypeFunction %void
|
|
%otherfuncty = OpTypeFunction %bool
|
|
%true = OpConstantTrue %bool
|
|
%func = OpFunction %void None %functy
|
|
%1 = OpLabel
|
|
%2 = OpFunctionCall %bool %3
|
|
OpReturn
|
|
OpFunctionEnd
|
|
%3 = OpFunction %bool None %otherfuncty
|
|
%4 = OpLabel
|
|
OpBranch %5
|
|
%5 = OpLabel
|
|
OpLoopMerge %6 %7 None
|
|
OpBranch %8
|
|
%8 = OpLabel
|
|
OpReturnValue %true
|
|
%7 = OpLabel
|
|
OpBranch %5
|
|
%6 = OpLabel
|
|
OpUnreachable
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndMatch<BlockMergePass>(text, true);
|
|
}
|
|
|
|
TEST_F(BlockMergeTest, MergeHeaders) {
|
|
// Merge two headers when the second is the merge block of the first.
|
|
const std::string text = R"(
|
|
; CHECK: OpFunction
|
|
; CHECK-NEXT: OpLabel
|
|
; CHECK-NEXT: OpBranch [[header:%\w+]]
|
|
; CHECK-NEXT: [[header]] = OpLabel
|
|
; CHECK-NEXT: OpSelectionMerge [[merge:%\w+]]
|
|
; CHECK: [[merge]] = OpLabel
|
|
; CHEKC: OpReturn
|
|
OpCapability Shader
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %func "func"
|
|
OpExecutionMode %func OriginUpperLeft
|
|
%void = OpTypeVoid
|
|
%bool = OpTypeBool
|
|
%functy = OpTypeFunction %void
|
|
%otherfuncty = OpTypeFunction %bool
|
|
%true = OpConstantTrue %bool
|
|
%func = OpFunction %void None %functy
|
|
%1 = OpLabel
|
|
OpBranch %5
|
|
%5 = OpLabel
|
|
OpLoopMerge %8 %7 None
|
|
OpBranch %8
|
|
%7 = OpLabel
|
|
OpBranch %5
|
|
%8 = OpLabel
|
|
OpSelectionMerge %m None
|
|
OpBranchConditional %true %a %m
|
|
%a = OpLabel
|
|
OpBranch %m
|
|
%m = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|
|
)";
|
|
|
|
SinglePassRunAndMatch<BlockMergePass>(text, true);
|
|
}
|
|
|
|
// TODO(greg-lunarg): Add tests to verify handling of these cases:
|
|
//
|
|
// More complex control flow
|
|
// Others?
|
|
|
|
} // namespace
|
|
} // namespace opt
|
|
} // namespace spvtools
|