1 use crate::abi::call::{ArgAbi, FnAbi, Reg, Uniform};
2 use crate::abi::{HasDataLayout, LayoutOf, Size, TyLayoutMethods};
4 fn classify_ret<'a, Ty, C>(cx: &C, ret: &mut ArgAbi<'_, Ty>, offset: &mut Size)
6 Ty: TyLayoutMethods<'a, C>,
7 C: LayoutOf<Ty = Ty> + HasDataLayout,
9 if !ret.layout.is_aggregate() {
10 ret.extend_integer_width_to(32);
13 *offset += cx.data_layout().pointer_size;
17 fn classify_arg<'a, Ty, C>(cx: &C, arg: &mut ArgAbi<'_, Ty>, offset: &mut Size)
19 Ty: TyLayoutMethods<'a, C>,
20 C: LayoutOf<Ty = Ty> + HasDataLayout,
22 let dl = cx.data_layout();
23 let size = arg.layout.size;
24 let align = arg.layout.align.max(dl.i32_align).min(dl.i64_align).abi;
26 if arg.layout.is_aggregate() {
27 arg.cast_to(Uniform { unit: Reg::i32(), total: size });
28 if !offset.is_aligned(align) {
29 arg.pad_with(Reg::i32());
32 arg.extend_integer_width_to(32);
35 *offset = offset.align_to(align) + size.align_to(align);
38 pub fn compute_abi_info<'a, Ty, C>(cx: &C, fn_abi: &mut FnAbi<'_, Ty>)
40 Ty: TyLayoutMethods<'a, C>,
41 C: LayoutOf<Ty = Ty> + HasDataLayout,
43 let mut offset = Size::ZERO;
44 if !fn_abi.ret.is_ignore() {
45 classify_ret(cx, &mut fn_abi.ret, &mut offset);
48 for arg in &mut fn_abi.args {
52 classify_arg(cx, arg, &mut offset);