pub(crate) fn compute_wasm_abi_info<Ty>(fn_abi: &mut FnAbi<'_, Ty>)Expand description
The purpose of this ABI is for matching the WebAssembly standard. This intentionally diverges from the C ABI and is specifically crafted to take advantage of LLVM’s support of multiple returns in WebAssembly.
This ABI is bad! It uses PassMode::Direct for abi::Aggregate types, which leaks LLVM
implementation details into the ABI. It’s just hard to fix because ABIs are hard to change.
Also see https://github.com/rust-lang/rust/issues/115666.