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James Price a5d73ce965 transform/shader_io: Generate a wrapper function 
This is a major reworking of this transform. The old transform code
was getting unwieldy, with part of the complication coming from the
handling of multiple return statements. By generating a wrapper
function instead, we can avoid a lot of this complexity.

The original entry point function is stripped of all shader IO
attributes (as well as `stage` and `workgroup_size`), but the body is
left unmodified. A new entry point wrapper function is introduced
which calls the original function, packing/unpacking the shader inputs
as necessary, and propagates the result to the corresponding shader
outputs.

The new code has been refactored to use a state object with the
different parts of the transform split into separate functions, which
makes it much more manageable.

Fixed: tint:1076
Bug: tint:920
Change-Id: I3490a0ea7a3509a4e198ce730e476516649d8d96
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60521
Auto-Submit: James Price <jrprice@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: James Price <jrprice@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
 		2021-08-04 22:15:28 +00:00
..
0dc614.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
0dc614.wgsl.expected.hlsl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
0dc614.wgsl.expected.msl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
0dc614.wgsl.expected.spvasm tools: Return position from generated vertex shaders 2021-06-04 17:31:48 +00:00
0dc614.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
03c7e3.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
03c7e3.wgsl.expected.hlsl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
03c7e3.wgsl.expected.msl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
03c7e3.wgsl.expected.spvasm tools: Return position from generated vertex shaders 2021-06-04 17:31:48 +00:00
03c7e3.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
46c5d3.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
46c5d3.wgsl.expected.hlsl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
46c5d3.wgsl.expected.msl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
46c5d3.wgsl.expected.spvasm tools: Return position from generated vertex shaders 2021-06-04 17:31:48 +00:00
46c5d3.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
82b28f.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
82b28f.wgsl.expected.hlsl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
82b28f.wgsl.expected.msl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
82b28f.wgsl.expected.spvasm tools: Return position from generated vertex shaders 2021-06-04 17:31:48 +00:00
82b28f.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
93cfc4.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
93cfc4.wgsl.expected.hlsl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
93cfc4.wgsl.expected.msl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
93cfc4.wgsl.expected.spvasm tools: Return position from generated vertex shaders 2021-06-04 17:31:48 +00:00
93cfc4.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
3941e1.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
3941e1.wgsl.expected.hlsl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
3941e1.wgsl.expected.msl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
3941e1.wgsl.expected.spvasm tools: Return position from generated vertex shaders 2021-06-04 17:31:48 +00:00
3941e1.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
a45171.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
a45171.wgsl.expected.hlsl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
a45171.wgsl.expected.msl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
a45171.wgsl.expected.spvasm tools: Return position from generated vertex shaders 2021-06-04 17:31:48 +00:00
a45171.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
aa28ad.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
aa28ad.wgsl.expected.hlsl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
aa28ad.wgsl.expected.msl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
aa28ad.wgsl.expected.spvasm tools: Return position from generated vertex shaders 2021-06-04 17:31:48 +00:00
aa28ad.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
af326d.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
af326d.wgsl.expected.hlsl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
af326d.wgsl.expected.msl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
af326d.wgsl.expected.spvasm tools: Return position from generated vertex shaders 2021-06-04 17:31:48 +00:00
af326d.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
c70bb7.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
c70bb7.wgsl.expected.hlsl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
c70bb7.wgsl.expected.msl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
c70bb7.wgsl.expected.spvasm tools: Return position from generated vertex shaders 2021-06-04 17:31:48 +00:00
c70bb7.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
c76fa6.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
c76fa6.wgsl.expected.hlsl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
c76fa6.wgsl.expected.msl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
c76fa6.wgsl.expected.spvasm tools: Return position from generated vertex shaders 2021-06-04 17:31:48 +00:00
c76fa6.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
c73147.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00
c73147.wgsl.expected.hlsl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
c73147.wgsl.expected.msl transform/shader_io: Generate a wrapper function 2021-08-04 22:15:28 +00:00
c73147.wgsl.expected.spvasm tools: Return position from generated vertex shaders 2021-06-04 17:31:48 +00:00
c73147.wgsl.expected.wgsl validation: compute shader must include 'workgroup_size' in its attributes 2021-06-29 18:39:44 +00:00