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Opt: Fix HasLoads to not report decoration as load.

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This commit is contained in:
GregF 2017-11-06 11:25:24 -07:00 committed by Diego Novillo
parent d86c7ce808
commit ac04b2faea
2 changed files with 138 additions and 1 deletions
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2
source/opt/mem_pass.cpp
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@ -174,7 +174,7 @@ bool MemPass::HasLoads(uint32_t varId) const {
// better handling of non-store/name.
if (IsNonPtrAccessChain(op) || op == SpvOpCopyObject) {
if (HasLoads(u.inst->result_id())) return true;
} else if (op != SpvOpStore && op != SpvOpName)
} else if (op != SpvOpStore && op != SpvOpName && !IsNonTypeDecorate(op))
return true;
}
return false;

137
test/opt/local_ssa_elim_test.cpp
View File

@ -847,6 +847,143 @@ OpFunctionEnd
true, true);
}
TEST_F(LocalSSAElimTest, DecoratedVar) {
// SPIR-V hand edited to decorate v
// #version 450
//
// layout (location=0) in vec4 BaseColor;
// layout (location=1) in float f;
// layout (location=0) out vec4 OutColor;
//
// void main()
// {
// vec4 v;
// if (f >= 0)
// v = BaseColor * 0.5;
// else
// v = BaseColor + vec4(0.1,0.1,0.1,0.1);
// OutColor = v;
// }
const std::string predefs_before =
R"(OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %f %BaseColor %OutColor
OpExecutionMode %main OriginUpperLeft
OpSource GLSL 450
OpName %main "main"
OpName %f "f"
OpName %v "v"
OpName %BaseColor "BaseColor"
OpName %OutColor "OutColor"
OpDecorate %v RelaxedPrecision
OpDecorate %f Location 1
OpDecorate %BaseColor Location 0
OpDecorate %OutColor Location 0
%void = OpTypeVoid
%8 = OpTypeFunction %void
%float = OpTypeFloat 32
%_ptr_Input_float = OpTypePointer Input %float
%f = OpVariable %_ptr_Input_float Input
%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
%float_0_5 = OpConstant %float 0.5
%float_0_1 = OpConstant %float 0.1
%18 = OpConstantComposite %v4float %float_0_1 %float_0_1 %float_0_1 %float_0_1
%_ptr_Output_v4float = OpTypePointer Output %v4float
%OutColor = OpVariable %_ptr_Output_v4float Output
)";
const std::string predefs_after =
R"(OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %f %BaseColor %OutColor
OpExecutionMode %main OriginUpperLeft
OpSource GLSL 450
OpName %main "main"
OpName %f "f"
OpName %BaseColor "BaseColor"
OpName %OutColor "OutColor"
OpDecorate %f Location 1
OpDecorate %BaseColor Location 0
OpDecorate %OutColor Location 0
%void = OpTypeVoid
%8 = OpTypeFunction %void
%float = OpTypeFloat 32
%_ptr_Input_float = OpTypePointer Input %float
%f = OpVariable %_ptr_Input_float Input
%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
%float_0_5 = OpConstant %float 0.5
%float_0_1 = OpConstant %float 0.1
%18 = OpConstantComposite %v4float %float_0_1 %float_0_1 %float_0_1 %float_0_1
%_ptr_Output_v4float = OpTypePointer Output %v4float
%OutColor = OpVariable %_ptr_Output_v4float Output
)";
const std::string before =
R"(%main = OpFunction %void None %8
%20 = OpLabel
%v = OpVariable %_ptr_Function_v4float Function
%21 = OpLoad %float %f
%22 = OpFOrdGreaterThanEqual %bool %21 %float_0
OpSelectionMerge %23 None
OpBranchConditional %22 %24 %25
%24 = OpLabel
%26 = OpLoad %v4float %BaseColor
%27 = OpVectorTimesScalar %v4float %26 %float_0_5
OpStore %v %27
OpBranch %23
%25 = OpLabel
%28 = OpLoad %v4float %BaseColor
%29 = OpFAdd %v4float %28 %18
OpStore %v %29
OpBranch %23
%23 = OpLabel
%30 = OpLoad %v4float %v
OpStore %OutColor %30
OpReturn
OpFunctionEnd
)";
const std::string after =
R"(%main = OpFunction %void None %8
%20 = OpLabel
%21 = OpLoad %float %f
%22 = OpFOrdGreaterThanEqual %bool %21 %float_0
OpSelectionMerge %23 None
OpBranchConditional %22 %24 %25
%24 = OpLabel
%26 = OpLoad %v4float %BaseColor
%27 = OpVectorTimesScalar %v4float %26 %float_0_5
OpBranch %23
%25 = OpLabel
%28 = OpLoad %v4float %BaseColor
%29 = OpFAdd %v4float %28 %18
OpBranch %23
%23 = OpLabel
%31 = OpPhi %v4float %27 %24 %29 %25
OpStore %OutColor %31
OpReturn
OpFunctionEnd
)";
SinglePassRunAndCheck<opt::LocalMultiStoreElimPass>(
predefs_before + before,
predefs_after + after,
true, true);
}
TEST_F(LocalSSAElimTest, IfThen) {
// #version 140
//