| use super::misc::MiscMethods; |
| use super::Backend; |
| use super::HasCodegen; |
| use crate::common::TypeKind; |
| use crate::mir::place::PlaceRef; |
| use rustc::ty::layout::{self, TyLayout}; |
| use rustc::ty::{self, Ty}; |
| use rustc_span::DUMMY_SP; |
| use rustc_target::abi::call::{ArgAbi, CastTarget, FnAbi, Reg}; |
| |
| // This depends on `Backend` and not `BackendTypes`, because consumers will probably want to use |
| // `LayoutOf` or `HasTyCtxt`. This way, they don't have to add a constraint on it themselves. |
| pub trait BaseTypeMethods<'tcx>: Backend<'tcx> { |
| fn type_i1(&self) -> Self::Type; |
| fn type_i8(&self) -> Self::Type; |
| fn type_i16(&self) -> Self::Type; |
| fn type_i32(&self) -> Self::Type; |
| fn type_i64(&self) -> Self::Type; |
| fn type_i128(&self) -> Self::Type; |
| fn type_isize(&self) -> Self::Type; |
| |
| fn type_f32(&self) -> Self::Type; |
| fn type_f64(&self) -> Self::Type; |
| |
| fn type_func(&self, args: &[Self::Type], ret: Self::Type) -> Self::Type; |
| fn type_struct(&self, els: &[Self::Type], packed: bool) -> Self::Type; |
| fn type_kind(&self, ty: Self::Type) -> TypeKind; |
| fn type_ptr_to(&self, ty: Self::Type) -> Self::Type; |
| fn element_type(&self, ty: Self::Type) -> Self::Type; |
| |
| /// Returns the number of elements in `self` if it is a LLVM vector type. |
| fn vector_length(&self, ty: Self::Type) -> usize; |
| |
| fn float_width(&self, ty: Self::Type) -> usize; |
| |
| /// Retrieves the bit width of the integer type `self`. |
| fn int_width(&self, ty: Self::Type) -> u64; |
| |
| fn val_ty(&self, v: Self::Value) -> Self::Type; |
| } |
| |
| pub trait DerivedTypeMethods<'tcx>: BaseTypeMethods<'tcx> + MiscMethods<'tcx> { |
| fn type_i8p(&self) -> Self::Type { |
| self.type_ptr_to(self.type_i8()) |
| } |
| |
| fn type_int(&self) -> Self::Type { |
| match &self.sess().target.target.target_c_int_width[..] { |
| "16" => self.type_i16(), |
| "32" => self.type_i32(), |
| "64" => self.type_i64(), |
| width => bug!("Unsupported target_c_int_width: {}", width), |
| } |
| } |
| |
| fn type_from_integer(&self, i: layout::Integer) -> Self::Type { |
| use rustc::ty::layout::Integer::*; |
| match i { |
| I8 => self.type_i8(), |
| I16 => self.type_i16(), |
| I32 => self.type_i32(), |
| I64 => self.type_i64(), |
| I128 => self.type_i128(), |
| } |
| } |
| |
| fn type_needs_drop(&self, ty: Ty<'tcx>) -> bool { |
| ty.needs_drop(self.tcx(), ty::ParamEnv::reveal_all()) |
| } |
| |
| fn type_is_sized(&self, ty: Ty<'tcx>) -> bool { |
| ty.is_sized(self.tcx().at(DUMMY_SP), ty::ParamEnv::reveal_all()) |
| } |
| |
| fn type_is_freeze(&self, ty: Ty<'tcx>) -> bool { |
| ty.is_freeze(self.tcx(), ty::ParamEnv::reveal_all(), DUMMY_SP) |
| } |
| |
| fn type_has_metadata(&self, ty: Ty<'tcx>) -> bool { |
| let param_env = ty::ParamEnv::reveal_all(); |
| if ty.is_sized(self.tcx().at(DUMMY_SP), param_env) { |
| return false; |
| } |
| |
| let tail = self.tcx().struct_tail_erasing_lifetimes(ty, param_env); |
| match tail.kind { |
| ty::Foreign(..) => false, |
| ty::Str | ty::Slice(..) | ty::Dynamic(..) => true, |
| _ => bug!("unexpected unsized tail: {:?}", tail), |
| } |
| } |
| } |
| |
| impl<T> DerivedTypeMethods<'tcx> for T where Self: BaseTypeMethods<'tcx> + MiscMethods<'tcx> {} |
| |
| pub trait LayoutTypeMethods<'tcx>: Backend<'tcx> { |
| fn backend_type(&self, layout: TyLayout<'tcx>) -> Self::Type; |
| fn cast_backend_type(&self, ty: &CastTarget) -> Self::Type; |
| fn fn_ptr_backend_type(&self, fn_abi: &FnAbi<'tcx, Ty<'tcx>>) -> Self::Type; |
| fn reg_backend_type(&self, ty: &Reg) -> Self::Type; |
| fn immediate_backend_type(&self, layout: TyLayout<'tcx>) -> Self::Type; |
| fn is_backend_immediate(&self, layout: TyLayout<'tcx>) -> bool; |
| fn is_backend_scalar_pair(&self, layout: TyLayout<'tcx>) -> bool; |
| fn backend_field_index(&self, layout: TyLayout<'tcx>, index: usize) -> u64; |
| fn scalar_pair_element_backend_type( |
| &self, |
| layout: TyLayout<'tcx>, |
| index: usize, |
| immediate: bool, |
| ) -> Self::Type; |
| } |
| |
| pub trait ArgAbiMethods<'tcx>: HasCodegen<'tcx> { |
| fn store_fn_arg( |
| &mut self, |
| arg_abi: &ArgAbi<'tcx, Ty<'tcx>>, |
| idx: &mut usize, |
| dst: PlaceRef<'tcx, Self::Value>, |
| ); |
| fn store_arg( |
| &mut self, |
| arg_abi: &ArgAbi<'tcx, Ty<'tcx>>, |
| val: Self::Value, |
| dst: PlaceRef<'tcx, Self::Value>, |
| ); |
| fn arg_memory_ty(&self, arg_abi: &ArgAbi<'tcx, Ty<'tcx>>) -> Self::Type; |
| } |
| |
| pub trait TypeMethods<'tcx>: DerivedTypeMethods<'tcx> + LayoutTypeMethods<'tcx> {} |
| |
| impl<T> TypeMethods<'tcx> for T where Self: DerivedTypeMethods<'tcx> + LayoutTypeMethods<'tcx> {} |