From ca66978a5aadddf7895b49b44076c574e7e6a0b0 Mon Sep 17 00:00:00 2001
From: Divy Srivastava <dj.srivastava23@gmail.com>
Date: Sun, 27 Nov 2022 05:54:28 -0800
Subject: feat(ops): fast calls for Wasm (#16776)

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]>,
) {
  // ...
}
```
---
 ops/optimizer_tests/wasm_op.rs | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 ops/optimizer_tests/wasm_op.rs

(limited to 'ops/optimizer_tests/wasm_op.rs')

diff --git a/ops/optimizer_tests/wasm_op.rs b/ops/optimizer_tests/wasm_op.rs
new file mode 100644
index 000000000..b18f32fd1
--- /dev/null
+++ b/ops/optimizer_tests/wasm_op.rs
@@ -0,0 +1,3 @@
+fn op_wasm(memory: Option<&mut [u8]>) {
+  // @test-attr:wasm
+}
-- 
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