James Price 11c6fcdb51 spirv: Use generic transform to process shader IO
The refactored CanonicalizeEntryPointIO transform makes it much easier
to handle SPIR-V style IO as well, and doing this removes a lot of
duplicated code. Remove all of the SPIR-V transform code for shader IO
and vertex point size.

Bug: tint:920
Change-Id: Id1b97517619b4d2fd09b45d5aee848259f3dfa77
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60840
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: James Price <jrprice@google.com>
Auto-Submit: James Price <jrprice@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
2021-08-05 17:34:19 +00:00

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; SPIR-V
; Version: 1.3
; Generator: Google Tint Compiler; 0
; Bound: 29
; Schema: 0
OpCapability Shader
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %frag_color_param_1 %x_GLF_color_1_1
OpExecutionMode %main OriginUpperLeft
OpName %frag_color_param_1 "frag_color_param_1"
OpName %x_GLF_color_1_1 "x_GLF_color_1_1"
OpName %x_GLF_color "x_GLF_color"
OpName %frag_color "frag_color"
OpName %main_1 "main_1"
OpName %main_out "main_out"
OpMemberName %main_out 0 "x_GLF_color_1"
OpName %main_inner "main_inner"
OpName %frag_color_param "frag_color_param"
OpName %main "main"
OpDecorate %frag_color_param_1 Location 0
OpDecorate %x_GLF_color_1_1 Location 0
OpMemberDecorate %main_out 0 Offset 0
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%_ptr_Input_v4float = OpTypePointer Input %v4float
%frag_color_param_1 = OpVariable %_ptr_Input_v4float Input
%_ptr_Output_v4float = OpTypePointer Output %v4float
%7 = OpConstantNull %v4float
%x_GLF_color_1_1 = OpVariable %_ptr_Output_v4float Output %7
%_ptr_Private_v4float = OpTypePointer Private %v4float
%x_GLF_color = OpVariable %_ptr_Private_v4float Private %7
%frag_color = OpVariable %_ptr_Private_v4float Private %7
%void = OpTypeVoid
%11 = OpTypeFunction %void
%main_out = OpTypeStruct %v4float
%16 = OpTypeFunction %main_out %v4float
%main_1 = OpFunction %void None %11
%14 = OpLabel
%15 = OpLoad %v4float %frag_color
OpStore %x_GLF_color %15
OpReturn
OpFunctionEnd
%main_inner = OpFunction %main_out None %16
%frag_color_param = OpFunctionParameter %v4float
%20 = OpLabel
OpStore %frag_color %frag_color_param
%21 = OpFunctionCall %void %main_1
%22 = OpLoad %v4float %x_GLF_color
%23 = OpCompositeConstruct %main_out %22
OpReturnValue %23
OpFunctionEnd
%main = OpFunction %void None %11
%25 = OpLabel
%27 = OpLoad %v4float %frag_color_param_1
%26 = OpFunctionCall %main_out %main_inner %27
%28 = OpCompositeExtract %v4float %26 0
OpStore %x_GLF_color_1_1 %28
OpReturn
OpFunctionEnd