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- Remove `fn_sig()` from Instance.
- Change return value of `AssertMessage::description` to `Cow<>`.
- Add assert to instance `ty()`.
- Generalize uint / int type creation.
This commit is contained in:
Celina G. Val 2023-12-14 17:56:33 -08:00
parent a66cac92cc
commit c0f1207a12
6 changed files with 54 additions and 51 deletions
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18
compiler/rustc_smir/src/rustc_smir/context.rs
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@ -5,7 +5,9 @@
use rustc_middle::ty;
use rustc_middle::ty::print::{with_forced_trimmed_paths, with_no_trimmed_paths};
use rustc_middle::ty::{GenericPredicates, Instance, ParamEnv, ScalarInt, ValTree};
use rustc_middle::ty::{
GenericPredicates, Instance, ParamEnv, ScalarInt, TypeVisitableExt, ValTree,
};
use rustc_span::def_id::LOCAL_CRATE;
use stable_mir::compiler_interface::Context;
use stable_mir::mir::alloc::GlobalAlloc;
@ -13,8 +15,8 @@
use stable_mir::mir::Body;
use stable_mir::target::{MachineInfo, MachineSize};
use stable_mir::ty::{
AdtDef, AdtKind, Allocation, ClosureDef, ClosureKind, Const, FieldDef, FnDef, FnSig,
GenericArgs, LineInfo, PolyFnSig, RigidTy, Span, Ty, TyKind, VariantDef,
AdtDef, AdtKind, Allocation, ClosureDef, ClosureKind, Const, FieldDef, FnDef, GenericArgs,
LineInfo, PolyFnSig, RigidTy, Span, Ty, TyKind, VariantDef,
};
use stable_mir::{Crate, CrateItem, DefId, Error, Filename, ItemKind, Symbol};
use std::cell::RefCell;
@ -324,18 +326,10 @@ fn instance_body(&self, def: InstanceDef) -> Option<Body> {
fn instance_ty(&self, def: InstanceDef) -> stable_mir::ty::Ty {
let mut tables = self.0.borrow_mut();
let instance = tables.instances[def];
assert!(!instance.has_non_region_param(), "{instance:?} needs further substitution");
instance.ty(tables.tcx, ParamEnv::reveal_all()).stable(&mut *tables)
}
fn instance_sig(&self, def: InstanceDef) -> FnSig {
let mut tables = self.0.borrow_mut();
let instance = tables.instances[def];
let ty = instance.ty(tables.tcx, ParamEnv::reveal_all());
let sig = if ty.is_fn() { ty.fn_sig(tables.tcx) } else { instance.args.as_closure().sig() };
// Erase late bound regions.
tables.tcx.instantiate_bound_regions_with_erased(sig).stable(&mut *tables)
}
fn instance_def_id(&self, def: InstanceDef) -> stable_mir::DefId {
let mut tables = self.0.borrow_mut();
let def_id = tables.instances[def].def_id();

9
compiler/stable_mir/src/compiler_interface.rs
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@ -10,9 +10,9 @@
use crate::mir::Body;
use crate::target::MachineInfo;
use crate::ty::{
AdtDef, AdtKind, Allocation, ClosureDef, ClosureKind, Const, FieldDef, FnDef, FnSig,
GenericArgs, GenericPredicates, Generics, ImplDef, ImplTrait, LineInfo, PolyFnSig, RigidTy,
Span, TraitDecl, TraitDef, Ty, TyKind, VariantDef,
AdtDef, AdtKind, Allocation, ClosureDef, ClosureKind, Const, FieldDef, FnDef, GenericArgs,
GenericPredicates, Generics, ImplDef, ImplTrait, LineInfo, PolyFnSig, RigidTy, Span, TraitDecl,
TraitDef, Ty, TyKind, VariantDef,
};
use crate::{
mir, Crate, CrateItem, CrateItems, DefId, Error, Filename, ImplTraitDecls, ItemKind, Symbol,
@ -121,9 +121,6 @@ pub trait Context {
/// Get the instance type with generic substitutions applied and lifetimes erased.
fn instance_ty(&self, instance: InstanceDef) -> Ty;
/// Get the instance signature with .
fn instance_sig(&self, def: InstanceDef) -> FnSig;
/// Get the instance.
fn instance_def_id(&self, instance: InstanceDef) -> DefId;

57
compiler/stable_mir/src/mir/body.rs
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@ -4,6 +4,7 @@
VariantIdx,
};
use crate::{Error, Opaque, Span, Symbol};
use std::borrow::Cow;
use std::io;
/// The SMIR representation of a single function.
#[derive(Clone, Debug)]
@ -264,51 +265,63 @@ pub enum AssertMessage {
}
impl AssertMessage {
pub fn description(&self) -> Result<&'static str, Error> {
pub fn description(&self) -> Result<Cow<'static, str>, Error> {
match self {
AssertMessage::Overflow(BinOp::Add, _, _) => Ok("attempt to add with overflow"),
AssertMessage::Overflow(BinOp::Sub, _, _) => Ok("attempt to subtract with overflow"),
AssertMessage::Overflow(BinOp::Mul, _, _) => Ok("attempt to multiply with overflow"),
AssertMessage::Overflow(BinOp::Div, _, _) => Ok("attempt to divide with overflow"),
AssertMessage::Overflow(BinOp::Rem, _, _) => {
Ok("attempt to calculate the remainder with overflow")
AssertMessage::Overflow(BinOp::Add, _, _) => Ok("attempt to add with overflow".into()),
AssertMessage::Overflow(BinOp::Sub, _, _) => {
Ok("attempt to subtract with overflow".into())
}
AssertMessage::Overflow(BinOp::Mul, _, _) => {
Ok("attempt to multiply with overflow".into())
}
AssertMessage::Overflow(BinOp::Div, _, _) => {
Ok("attempt to divide with overflow".into())
}
AssertMessage::Overflow(BinOp::Rem, _, _) => {
Ok("attempt to calculate the remainder with overflow".into())
}
AssertMessage::OverflowNeg(_) => Ok("attempt to negate with overflow".into()),
AssertMessage::Overflow(BinOp::Shr, _, _) => {
Ok("attempt to shift right with overflow".into())
}
AssertMessage::Overflow(BinOp::Shl, _, _) => {
Ok("attempt to shift left with overflow".into())
}
AssertMessage::OverflowNeg(_) => Ok("attempt to negate with overflow"),
AssertMessage::Overflow(BinOp::Shr, _, _) => Ok("attempt to shift right with overflow"),
AssertMessage::Overflow(BinOp::Shl, _, _) => Ok("attempt to shift left with overflow"),
AssertMessage::Overflow(op, _, _) => Err(error!("`{:?}` cannot overflow", op)),
AssertMessage::DivisionByZero(_) => Ok("attempt to divide by zero"),
AssertMessage::DivisionByZero(_) => Ok("attempt to divide by zero".into()),
AssertMessage::RemainderByZero(_) => {
Ok("attempt to calculate the remainder with a divisor of zero")
Ok("attempt to calculate the remainder with a divisor of zero".into())
}
AssertMessage::ResumedAfterReturn(CoroutineKind::Coroutine) => {
Ok("coroutine resumed after completion")
Ok("coroutine resumed after completion".into())
}
AssertMessage::ResumedAfterReturn(CoroutineKind::Async(_)) => {
Ok("`async fn` resumed after completion")
Ok("`async fn` resumed after completion".into())
}
AssertMessage::ResumedAfterReturn(CoroutineKind::Gen(_)) => {
Ok("`async gen fn` resumed after completion")
Ok("`async gen fn` resumed after completion".into())
}
AssertMessage::ResumedAfterReturn(CoroutineKind::AsyncGen(_)) => {
Ok("`gen fn` should just keep returning `AssertMessage::None` after completion")
Ok("`gen fn` should just keep returning `AssertMessage::None` after completion"
.into())
}
AssertMessage::ResumedAfterPanic(CoroutineKind::Coroutine) => {
Ok("coroutine resumed after panicking")
Ok("coroutine resumed after panicking".into())
}
AssertMessage::ResumedAfterPanic(CoroutineKind::Async(_)) => {
Ok("`async fn` resumed after panicking")
Ok("`async fn` resumed after panicking".into())
}
AssertMessage::ResumedAfterPanic(CoroutineKind::Gen(_)) => {
Ok("`async gen fn` resumed after panicking")
Ok("`async gen fn` resumed after panicking".into())
}
AssertMessage::ResumedAfterPanic(CoroutineKind::AsyncGen(_)) => {
Ok("`gen fn` should just keep returning `AssertMessage::None` after panicking")
Ok("`gen fn` should just keep returning `AssertMessage::None` after panicking"
.into())
}
AssertMessage::BoundsCheck { .. } => Ok("index out of bounds"),
AssertMessage::BoundsCheck { .. } => Ok("index out of bounds".into()),
AssertMessage::MisalignedPointerDereference { .. } => {
Ok("misaligned pointer dereference")
Ok("misaligned pointer dereference".into())
}
}
}

7
compiler/stable_mir/src/mir/mono.rs
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@ -1,6 +1,6 @@
use crate::crate_def::CrateDef;
use crate::mir::Body;
use crate::ty::{Allocation, ClosureDef, ClosureKind, FnDef, FnSig, GenericArgs, IndexedVal, Ty};
use crate::ty::{Allocation, ClosureDef, ClosureKind, FnDef, GenericArgs, IndexedVal, Ty};
use crate::{with, CrateItem, DefId, Error, ItemKind, Opaque, Symbol};
use std::fmt::{Debug, Formatter};
@ -115,11 +115,6 @@ pub fn resolve_closure(
})
}
/// Get this function signature with all types already instantiated.
pub fn fn_sig(&self) -> FnSig {
with(|cx| cx.instance_sig(self.def))
}
/// Check whether this instance is an empty shim.
///
/// Allow users to check if this shim can be ignored when called directly.

12
compiler/stable_mir/src/ty.rs
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@ -6,7 +6,6 @@
use crate::crate_def::CrateDef;
use crate::mir::alloc::{read_target_int, read_target_uint, AllocId};
use crate::target::MachineInfo;
use crate::ty::UintTy::U8;
use crate::{Filename, Opaque};
use std::fmt::{self, Debug, Display, Formatter};
use std::ops::Range;
@ -77,9 +76,14 @@ pub fn bool_ty() -> Ty {
Ty::from_rigid_kind(RigidTy::Bool)
}
/// Create a type representing `u8`.
pub fn u8_ty() -> Ty {
Ty::from_rigid_kind(RigidTy::Uint(U8))
/// Create a type representing a signed integer.
pub fn signed_ty(inner: IntTy) -> Ty {
Ty::from_rigid_kind(RigidTy::Int(inner))
}
/// Create a type representing an unsigned integer.
pub fn unsigned_ty(inner: UintTy) -> Ty {
Ty::from_rigid_kind(RigidTy::Uint(inner))
}
}

2
tests/ui-fulldeps/stable-mir/check_defs.rs
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@ -69,7 +69,7 @@ fn extract_elem_ty(ty: Ty) -> Ty {
/// Check signature and type of `Vec::<u8>::new` and its generic version.
fn test_vec_new(instance: mir::mono::Instance) {
let sig = instance.fn_sig();
let sig = instance.ty().kind().fn_sig().unwrap().skip_binder();
assert_matches!(sig.inputs(), &[]);
let elem_ty = extract_elem_ty(sig.output());
assert_matches!(elem_ty.kind(), TyKind::RigidTy(RigidTy::Uint(UintTy::U8)));