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>
151 lines
5.2 KiB
JavaScript
151 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 %90 RelaxedPrecision
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OpDecorate %93 RelaxedPrecision
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OpDecorate %94 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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%v4int = OpTypeVector %int 4
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%_ptr_Function_v4int = OpTypePointer Function %v4int
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%int_1065353216 = OpConstant %int 1065353216
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%int_1073741824 = OpConstant %int 1073741824
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%int_n1069547520 = OpConstant %int -1069547520
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%int_n1065353216 = OpConstant %int -1065353216
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%50 = OpConstantComposite %v4int %int_1065353216 %int_1073741824 %int_n1069547520 %int_n1065353216
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%false = OpConstantFalse %bool
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%v2int = OpTypeVector %int 2
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%60 = OpConstantComposite %v2int %int_1065353216 %int_1073741824
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%v2bool = OpTypeVector %bool 2
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%v3float = OpTypeVector %float 3
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%v3int = OpTypeVector %int 3
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%71 = OpConstantComposite %v3int %int_1065353216 %int_1073741824 %int_n1069547520
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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_v4int Function
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%83 = 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 %50
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%53 = OpCompositeExtract %float %42 0
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%52 = OpBitcast %int %53
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%54 = OpIEqual %bool %52 %int_1065353216
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OpSelectionMerge %56 None
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OpBranchConditional %54 %55 %56
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%55 = OpLabel
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%58 = OpVectorShuffle %v2float %42 %42 0 1
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%57 = OpBitcast %v2int %58
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%61 = OpIEqual %v2bool %57 %60
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%63 = OpAll %bool %61
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OpBranch %56
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%56 = OpLabel
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%64 = OpPhi %bool %false %26 %63 %55
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OpSelectionMerge %66 None
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OpBranchConditional %64 %65 %66
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%65 = OpLabel
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%68 = OpVectorShuffle %v3float %42 %42 0 1 2
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%67 = OpBitcast %v3int %68
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%72 = OpIEqual %v3bool %67 %71
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%74 = OpAll %bool %72
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OpBranch %66
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%66 = OpLabel
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%75 = OpPhi %bool %false %56 %74 %65
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OpSelectionMerge %77 None
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OpBranchConditional %75 %76 %77
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%76 = OpLabel
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%78 = OpBitcast %v4int %42
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%79 = OpIEqual %v4bool %78 %50
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%81 = OpAll %bool %79
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OpBranch %77
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%77 = OpLabel
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%82 = OpPhi %bool %false %66 %81 %76
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OpSelectionMerge %86 None
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OpBranchConditional %82 %84 %85
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%84 = OpLabel
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%87 = OpAccessChain %_ptr_Uniform_v4float %10 %int_2
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%90 = OpLoad %v4float %87
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OpStore %83 %90
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OpBranch %86
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%85 = OpLabel
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%91 = OpAccessChain %_ptr_Uniform_v4float %10 %int_3
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%93 = OpLoad %v4float %91
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OpStore %83 %93
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OpBranch %86
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%86 = OpLabel
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%94 = OpLoad %v4float %83
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OpReturnValue %94
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OpFunctionEnd
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