dawn-cmake/test/intrinsics/gen/atomicAdd/d5db1d.wgsl.expected.msl
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

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#include <metal_stdlib>
using namespace metal;
void atomicAdd_d5db1d(threadgroup atomic_uint* const tint_symbol) {
uint res = atomic_fetch_add_explicit(tint_symbol, 1u, memory_order_relaxed);
}
void compute_main_inner(uint local_invocation_index, threadgroup atomic_uint* const tint_symbol_1) {
{
atomic_store_explicit(tint_symbol_1, uint(), memory_order_relaxed);
}
threadgroup_barrier(mem_flags::mem_threadgroup);
atomicAdd_d5db1d(tint_symbol_1);
}
kernel void compute_main(uint local_invocation_index [[thread_index_in_threadgroup]]) {
threadgroup atomic_uint tint_symbol_2;
compute_main_inner(local_invocation_index, &(tint_symbol_2));
return;
}