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switch over to alloca expr

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Folkert 2023-07-29 20:20:40 +02:00
parent cdd2aab217
commit 44d03eebfa
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8 changed files with 9 additions and 67 deletions
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36
crates/compiler/gen_wasm/src/low_level.rs
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@ -1992,42 +1992,6 @@ impl<'a> LowLevelCall<'a> {
backend.code_builder.i32_const(-4); // 11111111...1100
backend.code_builder.i32_and();
}
Alloca => {
// Alloca : a -> Ptr a
let arg = self.arguments[0];
let arg_layout = backend.storage.symbol_layouts.get(&arg).unwrap();
let (size, alignment_bytes) = backend
.layout_interner
.stack_size_and_alignment(*arg_layout);
let (frame_ptr, offset) = backend
.storage
.allocate_anonymous_stack_memory(size, alignment_bytes);
// write the default value into the stack memory
backend.storage.copy_value_to_memory(
&mut backend.code_builder,
frame_ptr,
offset,
arg,
);
// create a local variable for the pointer
let ptr_local_id = match backend.storage.ensure_value_has_local(
&mut backend.code_builder,
self.ret_symbol,
self.ret_storage.clone(),
) {
StoredValue::Local { local_id, .. } => local_id,
_ => internal_error!("A pointer will always be an i32"),
};
backend.code_builder.get_local(frame_ptr);
backend.code_builder.i32_const(offset as i32);
backend.code_builder.i32_add();
backend.code_builder.set_local(ptr_local_id);
}
Hash => todo!("{:?}", self.lowlevel),