compiler/rustc_codegen_ssa/src/traits/consts.rs

   1 use super::BackendTypes;
   2 use crate::mir::place::PlaceRef;
   3 use rustc_middle::mir::interpret::{Allocation, Scalar};
   4 use rustc_middle::ty::layout::TyAndLayout;
   5 use rustc_span::Symbol;
   6 use rustc_target::abi::{self, Size};
   7
   8 pub trait ConstMethods<'tcx>: BackendTypes {
   9     // Constant constructors
  10     fn const_null(&self, t: Self::Type) -> Self::Value;
  11     fn const_undef(&self, t: Self::Type) -> Self::Value;
  12     fn const_int(&self, t: Self::Type, i: i64) -> Self::Value;
  13     fn const_uint(&self, t: Self::Type, i: u64) -> Self::Value;
  14     fn const_uint_big(&self, t: Self::Type, u: u128) -> Self::Value;
  15     fn const_bool(&self, val: bool) -> Self::Value;
  16     fn const_i32(&self, i: i32) -> Self::Value;
  17     fn const_u32(&self, i: u32) -> Self::Value;
  18     fn const_u64(&self, i: u64) -> Self::Value;
  19     fn const_usize(&self, i: u64) -> Self::Value;
  20     fn const_u8(&self, i: u8) -> Self::Value;
  21     fn const_real(&self, t: Self::Type, val: f64) -> Self::Value;
  22
  23     fn const_str(&self, s: Symbol) -> (Self::Value, Self::Value);
  24     fn const_struct(&self, elts: &[Self::Value], packed: bool) -> Self::Value;
  25
  26     fn const_to_opt_uint(&self, v: Self::Value) -> Option<u64>;
  27     fn const_to_opt_u128(&self, v: Self::Value, sign_ext: bool) -> Option<u128>;
  28
  29     fn const_data_from_alloc(&self, alloc: &Allocation) -> Self::Value;
  30
  31     fn scalar_to_backend(&self, cv: Scalar, layout: &abi::Scalar, llty: Self::Type) -> Self::Value;
  32     fn from_const_alloc(
  33         &self,
  34         layout: TyAndLayout<'tcx>,
  35         alloc: &Allocation,
  36         offset: Size,
  37     ) -> PlaceRef<'tcx, Self::Value>;
  38
  39     fn const_ptrcast(&self, val: Self::Value, ty: Self::Type) -> Self::Value;
  40 }