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interpret: remove Readable trait, we can use Projectable instead

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This commit is contained in:
Ralf Jung 2024-08-28 17:39:09 +02:00
parent 7b18b3eb6d
commit fa60ea7d38
5 changed files with 21 additions and 47 deletions
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4
compiler/rustc_const_eval/src/interpret/discriminant.rs
View File

@ -7,7 +7,7 @@ use rustc_target::abi::{self, TagEncoding, VariantIdx, Variants};
use tracing::{instrument, trace};
use super::{
err_ub, throw_ub, ImmTy, InterpCx, InterpResult, Machine, Readable, Scalar, Writeable,
err_ub, throw_ub, ImmTy, InterpCx, InterpResult, Machine, Projectable, Scalar, Writeable,
};
impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
@ -60,7 +60,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
#[instrument(skip(self), level = "trace")]
pub fn read_discriminant(
&self,
op: &impl Readable<'tcx, M::Provenance>,
op: &impl Projectable<'tcx, M::Provenance>,
) -> InterpResult<'tcx, VariantIdx> {
let ty = op.layout().ty;
trace!("read_discriminant_value {:#?}", op.layout());

2
compiler/rustc_const_eval/src/interpret/mod.rs
View File

@ -33,7 +33,7 @@ pub(crate) use self::intrinsics::eval_nullary_intrinsic;
pub use self::machine::{compile_time_machine, AllocMap, Machine, MayLeak, ReturnAction};
pub use self::memory::{AllocKind, AllocRef, AllocRefMut, FnVal, Memory, MemoryKind};
use self::operand::Operand;
pub use self::operand::{ImmTy, Immediate, OpTy, Readable};
pub use self::operand::{ImmTy, Immediate, OpTy};
pub use self::place::{MPlaceTy, MemPlaceMeta, PlaceTy, Writeable};
use self::place::{MemPlace, Place};
pub use self::projection::{OffsetMode, Projectable};

40
compiler/rustc_const_eval/src/interpret/operand.rs
View File

@ -490,32 +490,6 @@ impl<'tcx, Prov: Provenance> Projectable<'tcx, Prov> for OpTy<'tcx, Prov> {
}
}
/// The `Readable` trait describes interpreter values that one can read from.
pub trait Readable<'tcx, Prov: Provenance>: Projectable<'tcx, Prov> {
fn as_mplace_or_imm(&self) -> Either<MPlaceTy<'tcx, Prov>, ImmTy<'tcx, Prov>>;
}
impl<'tcx, Prov: Provenance> Readable<'tcx, Prov> for OpTy<'tcx, Prov> {
#[inline(always)]
fn as_mplace_or_imm(&self) -> Either<MPlaceTy<'tcx, Prov>, ImmTy<'tcx, Prov>> {
self.as_mplace_or_imm()
}
}
impl<'tcx, Prov: Provenance> Readable<'tcx, Prov> for MPlaceTy<'tcx, Prov> {
#[inline(always)]
fn as_mplace_or_imm(&self) -> Either<MPlaceTy<'tcx, Prov>, ImmTy<'tcx, Prov>> {
Left(self.clone())
}
}
impl<'tcx, Prov: Provenance> Readable<'tcx, Prov> for ImmTy<'tcx, Prov> {
#[inline(always)]
fn as_mplace_or_imm(&self) -> Either<MPlaceTy<'tcx, Prov>, ImmTy<'tcx, Prov>> {
Right(self.clone())
}
}
impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
/// Try reading an immediate in memory; this is interesting particularly for `ScalarPair`.
/// Returns `None` if the layout does not permit loading this as a value.
@ -588,9 +562,9 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
/// ConstProp needs it, though.
pub fn read_immediate_raw(
&self,
src: &impl Readable<'tcx, M::Provenance>,
src: &impl Projectable<'tcx, M::Provenance>,
) -> InterpResult<'tcx, Either<MPlaceTy<'tcx, M::Provenance>, ImmTy<'tcx, M::Provenance>>> {
Ok(match src.as_mplace_or_imm() {
Ok(match src.to_op(self)?.as_mplace_or_imm() {
Left(ref mplace) => {
if let Some(val) = self.read_immediate_from_mplace_raw(mplace)? {
Right(val)
@ -608,7 +582,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
#[inline(always)]
pub fn read_immediate(
&self,
op: &impl Readable<'tcx, M::Provenance>,
op: &impl Projectable<'tcx, M::Provenance>,
) -> InterpResult<'tcx, ImmTy<'tcx, M::Provenance>> {
if !matches!(
op.layout().abi,
@ -627,7 +601,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
/// Read a scalar from a place
pub fn read_scalar(
&self,
op: &impl Readable<'tcx, M::Provenance>,
op: &impl Projectable<'tcx, M::Provenance>,
) -> InterpResult<'tcx, Scalar<M::Provenance>> {
Ok(self.read_immediate(op)?.to_scalar())
}
@ -638,21 +612,21 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
/// Read a pointer from a place.
pub fn read_pointer(
&self,
op: &impl Readable<'tcx, M::Provenance>,
op: &impl Projectable<'tcx, M::Provenance>,
) -> InterpResult<'tcx, Pointer<Option<M::Provenance>>> {
self.read_scalar(op)?.to_pointer(self)
}
/// Read a pointer-sized unsigned integer from a place.
pub fn read_target_usize(
&self,
op: &impl Readable<'tcx, M::Provenance>,
op: &impl Projectable<'tcx, M::Provenance>,
) -> InterpResult<'tcx, u64> {
self.read_scalar(op)?.to_target_usize(self)
}
/// Read a pointer-sized signed integer from a place.
pub fn read_target_isize(
&self,
op: &impl Readable<'tcx, M::Provenance>,
op: &impl Projectable<'tcx, M::Provenance>,
) -> InterpResult<'tcx, i64> {
self.read_scalar(op)?.to_target_isize(self)
}

14
compiler/rustc_const_eval/src/interpret/place.rs
View File

@ -15,7 +15,7 @@ use tracing::{instrument, trace};
use super::{
alloc_range, mir_assign_valid_types, AllocRef, AllocRefMut, CheckAlignMsg, CtfeProvenance,
ImmTy, Immediate, InterpCx, InterpResult, Machine, MemoryKind, Misalignment, OffsetMode, OpTy,
Operand, Pointer, Projectable, Provenance, Readable, Scalar,
Operand, Pointer, Projectable, Provenance, Scalar,
};
#[derive(Copy, Clone, Hash, PartialEq, Eq, Debug)]
@ -436,7 +436,7 @@ where
#[instrument(skip(self), level = "trace")]
pub fn deref_pointer(
&self,
src: &impl Readable<'tcx, M::Provenance>,
src: &impl Projectable<'tcx, M::Provenance>,
) -> InterpResult<'tcx, MPlaceTy<'tcx, M::Provenance>> {
if src.layout().ty.is_box() {
// Derefer should have removed all Box derefs.
@ -768,7 +768,7 @@ where
#[inline(always)]
pub(super) fn copy_op_no_dest_validation(
&mut self,
src: &impl Readable<'tcx, M::Provenance>,
src: &impl Projectable<'tcx, M::Provenance>,
dest: &impl Writeable<'tcx, M::Provenance>,
) -> InterpResult<'tcx> {
self.copy_op_inner(
@ -781,7 +781,7 @@ where
#[inline(always)]
pub fn copy_op_allow_transmute(
&mut self,
src: &impl Readable<'tcx, M::Provenance>,
src: &impl Projectable<'tcx, M::Provenance>,
dest: &impl Writeable<'tcx, M::Provenance>,
) -> InterpResult<'tcx> {
self.copy_op_inner(
@ -794,7 +794,7 @@ where
#[inline(always)]
pub fn copy_op(
&mut self,
src: &impl Readable<'tcx, M::Provenance>,
src: &impl Projectable<'tcx, M::Provenance>,
dest: &impl Writeable<'tcx, M::Provenance>,
) -> InterpResult<'tcx> {
self.copy_op_inner(
@ -808,7 +808,7 @@ where
#[instrument(skip(self), level = "trace")]
fn copy_op_inner(
&mut self,
src: &impl Readable<'tcx, M::Provenance>,
src: &impl Projectable<'tcx, M::Provenance>,
dest: &impl Writeable<'tcx, M::Provenance>,
allow_transmute: bool,
validate_dest: bool,
@ -843,7 +843,7 @@ where
#[instrument(skip(self), level = "trace")]
fn copy_op_no_validate(
&mut self,
src: &impl Readable<'tcx, M::Provenance>,
src: &impl Projectable<'tcx, M::Provenance>,
dest: &impl Writeable<'tcx, M::Provenance>,
allow_transmute: bool,
) -> InterpResult<'tcx> {

8
src/tools/miri/src/helpers.rs
View File

@ -869,7 +869,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
/// Dereference a pointer operand to a place using `layout` instead of the pointer's declared type
fn deref_pointer_as(
&self,
op: &impl Readable<'tcx, Provenance>,
op: &impl Projectable<'tcx, Provenance>,
layout: TyAndLayout<'tcx>,
) -> InterpResult<'tcx, MPlaceTy<'tcx>> {
let this = self.eval_context_ref();
@ -880,7 +880,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
/// Calculates the MPlaceTy given the offset and layout of an access on an operand
fn deref_pointer_and_offset(
&self,
op: &impl Readable<'tcx, Provenance>,
op: &impl Projectable<'tcx, Provenance>,
offset: u64,
base_layout: TyAndLayout<'tcx>,
value_layout: TyAndLayout<'tcx>,
@ -897,7 +897,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
fn deref_pointer_and_read(
&self,
op: &impl Readable<'tcx, Provenance>,
op: &impl Projectable<'tcx, Provenance>,
offset: u64,
base_layout: TyAndLayout<'tcx>,
value_layout: TyAndLayout<'tcx>,
@ -909,7 +909,7 @@ pub trait EvalContextExt<'tcx>: crate::MiriInterpCxExt<'tcx> {
fn deref_pointer_and_write(
&mut self,
op: &impl Readable<'tcx, Provenance>,
op: &impl Projectable<'tcx, Provenance>,
offset: u64,
value: impl Into<Scalar>,
base_layout: TyAndLayout<'tcx>,