ffc9dec755
We now have two functions `writeOpLoad` and `writeOpStore` which are in charge of writing SpvOpLoad and SpvOpStore instructions. `writeOpStore` also keeps track of pointer stores in a "store cache." Subsequent loads from that same pointer will be found in the cache and will return the value stored in that pointer instead. Such a cache definitely cannot work in the face of control flow, so we make the following concessions: - `pruneReachableOps` is now `pruneConditionalOps`. Any pointers that are altered inside a potentially-unreachable block are cleared from the cache entirely. - The entire store cache is cleared at all OpLabels within a loop. The cache also cannot work in the presence of swizzled stores, so we make another significant concession: - The entire store cache is cleared whenever we store into a non-memory pointer (e.g., assigning into a swizzled LValue, such as `foo.xz`). Despite these significant limitations, this manages to dramatically shrink many real-world examples. Change-Id: I0981a0cf7b45b064e153e9ada271494c8e00cad5 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/530054 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: John Stiles <johnstiles@google.com> Auto-Submit: John Stiles <johnstiles@google.com>
152 lines
5.2 KiB
JavaScript
152 lines
5.2 KiB
JavaScript
OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %_entrypoint_v "_entrypoint" %sk_FragColor %sk_Clockwise
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OpExecutionMode %_entrypoint_v OriginUpperLeft
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OpName %sk_FragColor "sk_FragColor"
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OpName %sk_Clockwise "sk_Clockwise"
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OpName %_UniformBuffer "_UniformBuffer"
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OpMemberName %_UniformBuffer 0 "testInput"
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OpMemberName %_UniformBuffer 1 "testMatrix2x2"
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OpMemberName %_UniformBuffer 2 "colorGreen"
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OpMemberName %_UniformBuffer 3 "colorRed"
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OpName %_entrypoint_v "_entrypoint_v"
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OpName %main "main"
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OpName %inputVal "inputVal"
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OpName %expectedB "expectedB"
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OpDecorate %sk_FragColor RelaxedPrecision
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OpDecorate %sk_FragColor Location 0
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OpDecorate %sk_FragColor Index 0
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OpDecorate %sk_Clockwise BuiltIn FrontFacing
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OpMemberDecorate %_UniformBuffer 0 Offset 0
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OpMemberDecorate %_UniformBuffer 1 Offset 16
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OpMemberDecorate %_UniformBuffer 1 ColMajor
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OpMemberDecorate %_UniformBuffer 1 MatrixStride 16
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OpMemberDecorate %_UniformBuffer 2 Offset 48
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OpMemberDecorate %_UniformBuffer 2 RelaxedPrecision
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OpMemberDecorate %_UniformBuffer 3 Offset 64
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OpMemberDecorate %_UniformBuffer 3 RelaxedPrecision
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OpDecorate %_UniformBuffer Block
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OpDecorate %10 Binding 0
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OpDecorate %10 DescriptorSet 0
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OpDecorate %91 RelaxedPrecision
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OpDecorate %94 RelaxedPrecision
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OpDecorate %95 RelaxedPrecision
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%sk_FragColor = OpVariable %_ptr_Output_v4float Output
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%bool = OpTypeBool
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%_ptr_Input_bool = OpTypePointer Input %bool
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%sk_Clockwise = OpVariable %_ptr_Input_bool Input
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%v2float = OpTypeVector %float 2
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%mat2v2float = OpTypeMatrix %v2float 2
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%_UniformBuffer = OpTypeStruct %float %mat2v2float %v4float %v4float
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%_ptr_Uniform__UniformBuffer = OpTypePointer Uniform %_UniformBuffer
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%10 = OpVariable %_ptr_Uniform__UniformBuffer Uniform
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%void = OpTypeVoid
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%17 = OpTypeFunction %void
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%float_0 = OpConstant %float 0
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%20 = OpConstantComposite %v2float %float_0 %float_0
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%_ptr_Function_v2float = OpTypePointer Function %v2float
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%24 = OpTypeFunction %v4float %_ptr_Function_v2float
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Uniform_mat2v2float = OpTypePointer Uniform %mat2v2float
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%int = OpTypeInt 32 1
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%int_1 = OpConstant %int 1
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%float_1 = OpConstant %float 1
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%float_n1 = OpConstant %float -1
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%41 = OpConstantComposite %v4float %float_1 %float_1 %float_n1 %float_n1
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%uint = OpTypeInt 32 0
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%v4uint = OpTypeVector %uint 4
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%_ptr_Function_v4uint = OpTypePointer Function %v4uint
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%uint_1065353216 = OpConstant %uint 1065353216
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%uint_1073741824 = OpConstant %uint 1073741824
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%uint_3225419776 = OpConstant %uint 3225419776
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%uint_3229614080 = OpConstant %uint 3229614080
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%51 = OpConstantComposite %v4uint %uint_1065353216 %uint_1073741824 %uint_3225419776 %uint_3229614080
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%false = OpConstantFalse %bool
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%v2uint = OpTypeVector %uint 2
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%v2bool = OpTypeVector %bool 2
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%v3float = OpTypeVector %float 3
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%v3uint = OpTypeVector %uint 3
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%v3bool = OpTypeVector %bool 3
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%v4bool = OpTypeVector %bool 4
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%_ptr_Uniform_v4float = OpTypePointer Uniform %v4float
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%int_2 = OpConstant %int 2
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%int_3 = OpConstant %int 3
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%_entrypoint_v = OpFunction %void None %17
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%18 = OpLabel
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%21 = OpVariable %_ptr_Function_v2float Function
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OpStore %21 %20
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%23 = OpFunctionCall %v4float %main %21
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OpStore %sk_FragColor %23
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OpReturn
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OpFunctionEnd
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%main = OpFunction %v4float None %24
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%25 = OpFunctionParameter %_ptr_Function_v2float
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%26 = OpLabel
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%inputVal = OpVariable %_ptr_Function_v4float Function
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%expectedB = OpVariable %_ptr_Function_v4uint Function
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%84 = OpVariable %_ptr_Function_v4float Function
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%29 = OpAccessChain %_ptr_Uniform_mat2v2float %10 %int_1
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%33 = OpLoad %mat2v2float %29
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%34 = OpCompositeExtract %float %33 0 0
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%35 = OpCompositeExtract %float %33 0 1
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%36 = OpCompositeExtract %float %33 1 0
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%37 = OpCompositeExtract %float %33 1 1
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%38 = OpCompositeConstruct %v4float %34 %35 %36 %37
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%42 = OpFMul %v4float %38 %41
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OpStore %inputVal %42
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OpStore %expectedB %51
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%53 = OpCompositeExtract %float %42 0
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%54 = OpBitcast %float %uint_1065353216
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%55 = OpFOrdEqual %bool %53 %54
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OpSelectionMerge %57 None
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OpBranchConditional %55 %56 %57
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%56 = OpLabel
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%58 = OpVectorShuffle %v2float %42 %42 0 1
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%60 = OpVectorShuffle %v2uint %51 %51 0 1
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%59 = OpBitcast %v2float %60
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%62 = OpFOrdEqual %v2bool %58 %59
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%64 = OpAll %bool %62
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OpBranch %57
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%57 = OpLabel
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%65 = OpPhi %bool %false %26 %64 %56
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OpSelectionMerge %67 None
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OpBranchConditional %65 %66 %67
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%66 = OpLabel
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%68 = OpVectorShuffle %v3float %42 %42 0 1 2
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%71 = OpVectorShuffle %v3uint %51 %51 0 1 2
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%70 = OpBitcast %v3float %71
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%73 = OpFOrdEqual %v3bool %68 %70
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%75 = OpAll %bool %73
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OpBranch %67
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%67 = OpLabel
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%76 = OpPhi %bool %false %57 %75 %66
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OpSelectionMerge %78 None
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OpBranchConditional %76 %77 %78
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%77 = OpLabel
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%79 = OpBitcast %v4float %51
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%80 = OpFOrdEqual %v4bool %42 %79
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%82 = OpAll %bool %80
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OpBranch %78
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%78 = OpLabel
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%83 = OpPhi %bool %false %67 %82 %77
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OpSelectionMerge %87 None
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OpBranchConditional %83 %85 %86
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%85 = OpLabel
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%88 = OpAccessChain %_ptr_Uniform_v4float %10 %int_2
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%91 = OpLoad %v4float %88
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OpStore %84 %91
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OpBranch %87
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%86 = OpLabel
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%92 = OpAccessChain %_ptr_Uniform_v4float %10 %int_3
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%94 = OpLoad %v4float %92
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OpStore %84 %94
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OpBranch %87
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%87 = OpLabel
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%95 = OpLoad %v4float %84
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OpReturnValue %95
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OpFunctionEnd
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