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This PR introduces Wasm ops. These calls are optimized for entry from
Wasm land.
The `#[op(wasm)]` attribute is opt-in.
Last parameter `Option<&mut [u8]>` is the memory slice of the Wasm
module *when entered from a Fast API call*. Otherwise, the user is
expected to implement logic to obtain the memory if `None`
```rust
#[op(wasm)]
pub fn op_args_get(
offset: i32,
buffer_offset: i32,
memory: Option<&mut [u8]>,
) {
// ...
}
```
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The optimization was missed in the optimizer rewrite
https://github.com/denoland/deno/pull/16514
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Upgrade fast_call tests to full (both tier) codegen tests.
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See https://github.com/denoland/deno/pull/16814#discussion_r1032744083.
Allows nullable buffers in low-level ops like FFI:
```rust
fn op_ffi_ptr_of<FP>(
state: &mut OpState,
buf: *const u8,
out: &mut [u32],
)
where
FP: FfiPermissions + 'static {
// ..
}
```
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Implements fast scheduling of deferred op futures.
```rs
#[op(fast)]
async fn op_read(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
buf: &mut [u8],
) -> Result<u32, Error> {
// ...
}
```
The future is scheduled via a fast API call and polled by the event loop
after being woken up by its waker.
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