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wasm: delete ReturnMethod::ZigPackedStruct

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Brian Carroll 2022-09-09 18:38:38 +01:00 • committed by Brendan Hansknecht
parent 564de99a43
commit cc2b8b5d19
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4 changed files with 22 additions and 71 deletions
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25
crates/compiler/gen_wasm/src/low_level.rs
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@ -135,7 +135,7 @@ impl<'a> LowLevelCall<'a> {
/// For numerical ops, this just pushes the arguments to the Wasm VM's value stack
/// It implements the calling convention used by Zig for both numbers and structs
/// Result is the type signature of the call
fn load_args(&self, backend: &mut WasmBackend<'a, '_>) -> (usize, bool, bool) {
fn load_args(&self, backend: &mut WasmBackend<'a, '_>) -> (usize, bool) {
backend.storage.load_symbols_for_call(
backend.env.arena,
&mut backend.code_builder,
@ -147,29 +147,8 @@ impl<'a> LowLevelCall<'a> {
}
fn load_args_and_call_zig(&self, backend: &mut WasmBackend<'a, '_>, name: &'a str) {
let (num_wasm_args, has_return_val, ret_zig_packed_struct) = self.load_args(backend);
let (num_wasm_args, has_return_val) = self.load_args(backend);
backend.call_host_fn_after_loading_args(name, num_wasm_args, has_return_val);
if ret_zig_packed_struct {
match self.ret_storage {
StoredValue::StackMemory {
size,
alignment_bytes,
..
} => {
// The address of the return value was already loaded before the call
let align = Align::from(alignment_bytes);
if size > 4 {
backend.code_builder.i64_store(align, 0);
} else {
backend.code_builder.i32_store(align, 0);
}
}
_ => {
internal_error!("Zig packed struct should always be stored to StackMemory")
}
}
}
}
/// Wrap an integer that should have less than 32 bits, but is represented in Wasm as i32.