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move List.sublist to backend

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satotake 2021-11-13 04:55:18 +00:00 • committed by GitHub
parent 8f8b2463ea
commit 98d2c57edf
10 changed files with 102 additions and 33 deletions
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27
compiler/gen_llvm/src/llvm/build_list.rs
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@ -338,6 +338,33 @@ pub fn list_take_last<'a, 'ctx, 'env>(
)
}
/// List.sublist : List elem, { start : Nat, len : Nat } -> List elem
pub fn list_sublist<'a, 'ctx, 'env>(
env: &Env<'a, 'ctx, 'env>,
layout_ids: &mut LayoutIds<'a>,
original_wrapper: StructValue<'ctx>,
len_and_start: StructValue<'ctx>,
element_layout: &Layout<'a>,
) -> BasicValueEnum<'ctx> {
let dec_element_fn = build_dec_wrapper(env, layout_ids, element_layout);
call_bitcode_fn_returns_list(
env,
&[
pass_list_cc(env, original_wrapper.into()),
env.alignment_intvalue(element_layout),
layout_width(env, element_layout),
complex_bitcast(
env.builder,
len_and_start.into(),
env.str_list_c_abi().into(),
"to_i128",
),
dec_element_fn.as_global_value().as_pointer_value().into(),
],
bitcode::LIST_SUBLIST,
)
}
/// List.drop : List elem, Nat -> List elem
pub fn list_drop<'a, 'ctx, 'env>(
env: &Env<'a, 'ctx, 'env>,