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implement signed checked addition

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Folkert 2022-08-23 20:23:01 +02:00
parent b43c0ac1e3
commit 6869c5d5c8
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4 changed files with 93 additions and 6 deletions
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19
crates/compiler/gen_dev/src/lib.rs
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@ -405,6 +405,9 @@ trait Backend<'a> {
);
self.build_num_add(sym, &args[0], &args[1], ret_layout)
}
LowLevel::NumAddChecked => {
self.build_num_add_checked(sym, &args[0], &args[1], &arg_layouts[0])
}
LowLevel::NumAcos => self.build_fn_call(
sym,
bitcode::NUM_ACOS[FloatWidth::F64].to_string(),
@ -678,6 +681,13 @@ trait Backend<'a> {
self.load_literal_symbols(args);
self.build_fn_call(sym, fn_name, args, arg_layouts, ret_layout)
}
Symbol::NUM_ADD_CHECKED => {
let layout_id = LayoutIds::default().get(func_sym, ret_layout);
let fn_name = self.symbol_to_string(func_sym, layout_id);
// Now that the arguments are needed, load them if they are literals.
self.load_literal_symbols(args);
self.build_fn_call(sym, fn_name, args, arg_layouts, ret_layout)
}
_ => todo!("the function, {:?}", func_sym),
}
}
@ -699,6 +709,15 @@ trait Backend<'a> {
/// build_num_add stores the sum of src1 and src2 into dst.
fn build_num_add(&mut self, dst: &Symbol, src1: &Symbol, src2: &Symbol, layout: &Layout<'a>);
/// build_num_add_checked stores the sum of src1 and src2 into dst.
fn build_num_add_checked(
&mut self,
dst: &Symbol,
src1: &Symbol,
src2: &Symbol,
layout: &Layout<'a>,
);
/// build_num_mul stores `src1 * src2` into dst.
fn build_num_mul(&mut self, dst: &Symbol, src1: &Symbol, src2: &Symbol, layout: &Layout<'a>);