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transform/shader_io: Generate a wrapper function

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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>
This commit is contained in:
James Price
2021-08-04 22:15:28 +00:00
committed by Tint LUCI CQ
parent 3e92e9f8ba
commit a5d73ce965
3866 changed files with 49323 additions and 26508 deletions
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9
test/ptr_ref/load/local/ptr_workgroup.wgsl.expected.hlsl
View File

@@ -4,14 +4,17 @@ struct tint_symbol_1 {
uint local_invocation_index : SV_GroupIndex;
};
[numthreads(1, 1, 1)]
void main(tint_symbol_1 tint_symbol) {
const uint local_invocation_index = tint_symbol.local_invocation_index;
void main_inner(uint local_invocation_index) {
{
i = 0;
}
GroupMemoryBarrierWithGroupSync();
i = 123;
const int use = (i + 1);
}
[numthreads(1, 1, 1)]
void main(tint_symbol_1 tint_symbol) {
main_inner(tint_symbol.local_invocation_index);
return;
}

14
test/ptr_ref/load/local/ptr_workgroup.wgsl.expected.msl
View File

@@ -1,14 +1,18 @@
#include <metal_stdlib>
using namespace metal;
kernel void tint_symbol(uint local_invocation_index [[thread_index_in_threadgroup]]) {
threadgroup int tint_symbol_2;
void tint_symbol_inner(uint local_invocation_index, threadgroup int* const tint_symbol_1) {
{
tint_symbol_2 = int();
*(tint_symbol_1) = int();
}
threadgroup_barrier(mem_flags::mem_threadgroup);
tint_symbol_2 = 123;
int const use = as_type<int>((as_type<uint>(tint_symbol_2) + as_type<uint>(1)));
*(tint_symbol_1) = 123;
int const use = as_type<int>((as_type<uint>(*(tint_symbol_1)) + as_type<uint>(1)));
}
kernel void tint_symbol(uint local_invocation_index [[thread_index_in_threadgroup]]) {
threadgroup int tint_symbol_2;
tint_symbol_inner(local_invocation_index, &(tint_symbol_2));
return;
}