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Make Const more useful in smir #114745

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Aug 14, 2023
Merged

Make Const more useful in smir #114745

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23 changes: 18 additions & 5 deletions compiler/rustc_smir/src/rustc_smir/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,7 @@
use crate::rustc_internal::{self, opaque};
use crate::stable_mir::mir::{CopyNonOverlapping, UserTypeProjection, VariantIdx};
use crate::stable_mir::ty::{
allocation_filter, new_allocation, FloatTy, IntTy, Movability, RigidTy, TyKind, UintTy,
allocation_filter, new_allocation, Const, FloatTy, IntTy, Movability, RigidTy, TyKind, UintTy,
};
use crate::stable_mir::{self, Context};
use rustc_hir as hir;
Expand Down Expand Up @@ -173,7 +173,11 @@ impl<'tcx> Stable<'tcx> for mir::Rvalue<'tcx> {
use mir::Rvalue::*;
match self {
Use(op) => stable_mir::mir::Rvalue::Use(op.stable(tables)),
Repeat(op, len) => stable_mir::mir::Rvalue::Repeat(op.stable(tables), opaque(len)),
Repeat(op, len) => {
let cnst = ConstantKind::from_const(*len, tables.tcx);
let len = Const { literal: cnst.stable(tables) };
stable_mir::mir::Rvalue::Repeat(op.stable(tables), len)
}
Ref(region, kind, place) => stable_mir::mir::Rvalue::Ref(
opaque(region),
kind.stable(tables),
Expand Down Expand Up @@ -358,7 +362,11 @@ impl<'tcx> Stable<'tcx> for ty::TermKind<'tcx> {
use stable_mir::ty::TermKind;
match self {
ty::TermKind::Ty(ty) => TermKind::Type(tables.intern_ty(*ty)),
ty::TermKind::Const(const_) => TermKind::Const(opaque(const_)),
ty::TermKind::Const(cnst) => {
let cnst = ConstantKind::from_const(*cnst, tables.tcx);
let cnst = Const { literal: cnst.stable(tables) };
TermKind::Const(cnst)
}
}
}
}
Expand Down Expand Up @@ -815,7 +823,10 @@ impl<'tcx> Stable<'tcx> for ty::GenericArgKind<'tcx> {
match self {
ty::GenericArgKind::Lifetime(region) => GenericArgKind::Lifetime(opaque(region)),
ty::GenericArgKind::Type(ty) => GenericArgKind::Type(tables.intern_ty(*ty)),
ty::GenericArgKind::Const(const_) => GenericArgKind::Const(opaque(&const_)),
ty::GenericArgKind::Const(cnst) => {
let cnst = ConstantKind::from_const(*cnst, tables.tcx);
GenericArgKind::Const(stable_mir::ty::Const { literal: cnst.stable(tables) })
}
}
}
}
Expand Down Expand Up @@ -1008,7 +1019,9 @@ impl<'tcx> Stable<'tcx> for Ty<'tcx> {
}
ty::Str => TyKind::RigidTy(RigidTy::Str),
ty::Array(ty, constant) => {
TyKind::RigidTy(RigidTy::Array(tables.intern_ty(*ty), opaque(constant)))
let cnst = ConstantKind::from_const(*constant, tables.tcx);
let cnst = stable_mir::ty::Const { literal: cnst.stable(tables) };
TyKind::RigidTy(RigidTy::Array(tables.intern_ty(*ty), cnst))
}
ty::Slice(ty) => TyKind::RigidTy(RigidTy::Slice(tables.intern_ty(*ty))),
ty::RawPtr(ty::TypeAndMut { ty, mutbl }) => {
Expand Down
6 changes: 5 additions & 1 deletion compiler/rustc_smir/src/stable_mir/ty.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -15,7 +15,11 @@ impl Ty {
}
}

pub(crate) type Const = Opaque;
#[derive(Debug, Clone)]
pub struct Const {
pub literal: ConstantKind,
}

type Ident = Opaque;
pub(crate) type Region = Opaque;
type Span = Opaque;
Expand Down
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