Function rustc_abi::layout::layout_of_enum
source ยท fn layout_of_enum<'a, LC, FieldIdx: Idx, VariantIdx: Idx, F>(
layout_calc: &LC,
repr: &ReprOptions,
variants: &IndexSlice<VariantIdx, IndexVec<FieldIdx, F>>,
discr_range_of_repr: impl Fn(i128, i128) -> (Integer, bool),
discriminants: impl Iterator<Item = (VariantIdx, i128)>,
dont_niche_optimize_enum: bool,
dl: &TargetDataLayout,
) -> Option<LayoutS<FieldIdx, VariantIdx>>