345d72124d
When we determine that a function only contains a single return statement, there is no need to create a temporary variable and store the result expression into a variable. Instead, we can directly replace the function-call expression with the return-statement's expression. This dramatically simplifies the final optimized output from chains of very simple inlined functions, which is a very common pattern for trees of Skia fragment processors. Change-Id: I6789064a321daf43db2e1cef4915f25ed74d6131 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/344665 Commit-Queue: John Stiles <johnstiles@google.com> Reviewed-by: Brian Osman <brianosman@google.com> Auto-Submit: John Stiles <johnstiles@google.com>
41 lines
1.3 KiB
JavaScript
41 lines
1.3 KiB
JavaScript
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %main "main" %sk_FragColor %sk_Clockwise %src %dst
|
|
OpExecutionMode %main OriginUpperLeft
|
|
OpName %sk_FragColor "sk_FragColor"
|
|
OpName %sk_Clockwise "sk_Clockwise"
|
|
OpName %src "src"
|
|
OpName %dst "dst"
|
|
OpName %main "main"
|
|
OpDecorate %sk_FragColor RelaxedPrecision
|
|
OpDecorate %sk_FragColor Location 0
|
|
OpDecorate %sk_FragColor Index 0
|
|
OpDecorate %sk_Clockwise RelaxedPrecision
|
|
OpDecorate %sk_Clockwise BuiltIn FrontFacing
|
|
OpDecorate %src RelaxedPrecision
|
|
OpDecorate %dst RelaxedPrecision
|
|
OpDecorate %16 RelaxedPrecision
|
|
OpDecorate %17 RelaxedPrecision
|
|
OpDecorate %18 RelaxedPrecision
|
|
%float = OpTypeFloat 32
|
|
%v4float = OpTypeVector %float 4
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%sk_FragColor = OpVariable %_ptr_Output_v4float Output
|
|
%bool = OpTypeBool
|
|
%_ptr_Input_bool = OpTypePointer Input %bool
|
|
%sk_Clockwise = OpVariable %_ptr_Input_bool Input
|
|
%_ptr_Input_v4float = OpTypePointer Input %v4float
|
|
%src = OpVariable %_ptr_Input_v4float Input
|
|
%dst = OpVariable %_ptr_Input_v4float Input
|
|
%void = OpTypeVoid
|
|
%14 = OpTypeFunction %void
|
|
%main = OpFunction %void None %14
|
|
%15 = OpLabel
|
|
%16 = OpLoad %v4float %src
|
|
%17 = OpLoad %v4float %dst
|
|
%18 = OpFMul %v4float %16 %17
|
|
OpStore %sk_FragColor %18
|
|
OpReturn
|
|
OpFunctionEnd
|