rustc_public/unstable/convert/stable/
mir.rs

1//! Conversion of internal Rust compiler `mir` items to stable ones.
2
3use rustc_middle::mir::mono::MonoItem;
4use rustc_middle::{bug, mir};
5use rustc_public_bridge::context::CompilerCtxt;
6use rustc_public_bridge::{Tables, bridge};
7
8use crate::compiler_interface::BridgeTys;
9use crate::mir::alloc::GlobalAlloc;
10use crate::mir::{ConstOperand, Statement, UserTypeProjection, VarDebugInfoFragment};
11use crate::ty::{Allocation, ConstantKind, MirConst};
12use crate::unstable::Stable;
13use crate::{Error, alloc, opaque};
14
15impl<'tcx> Stable<'tcx> for mir::Body<'tcx> {
16    type T = crate::mir::Body;
17
18    fn stable<'cx>(
19        &self,
20        tables: &mut Tables<'cx, BridgeTys>,
21        cx: &CompilerCtxt<'cx, BridgeTys>,
22    ) -> Self::T {
23        crate::mir::Body::new(
24            self.basic_blocks
25                .iter()
26                .map(|block| crate::mir::BasicBlock {
27                    terminator: block.terminator().stable(tables, cx),
28                    statements: block
29                        .statements
30                        .iter()
31                        .map(|statement| statement.stable(tables, cx))
32                        .collect(),
33                })
34                .collect(),
35            self.local_decls
36                .iter()
37                .map(|decl| crate::mir::LocalDecl {
38                    ty: decl.ty.stable(tables, cx),
39                    span: decl.source_info.span.stable(tables, cx),
40                    mutability: decl.mutability.stable(tables, cx),
41                })
42                .collect(),
43            self.arg_count,
44            self.var_debug_info.iter().map(|info| info.stable(tables, cx)).collect(),
45            self.spread_arg.stable(tables, cx),
46            self.span.stable(tables, cx),
47        )
48    }
49}
50
51impl<'tcx> Stable<'tcx> for mir::VarDebugInfo<'tcx> {
52    type T = crate::mir::VarDebugInfo;
53    fn stable<'cx>(
54        &self,
55        tables: &mut Tables<'cx, BridgeTys>,
56        cx: &CompilerCtxt<'cx, BridgeTys>,
57    ) -> Self::T {
58        crate::mir::VarDebugInfo {
59            name: self.name.to_string(),
60            source_info: self.source_info.stable(tables, cx),
61            composite: self.composite.as_ref().map(|composite| composite.stable(tables, cx)),
62            value: self.value.stable(tables, cx),
63            argument_index: self.argument_index,
64        }
65    }
66}
67
68impl<'tcx> Stable<'tcx> for mir::Statement<'tcx> {
69    type T = crate::mir::Statement;
70    fn stable<'cx>(
71        &self,
72        tables: &mut Tables<'cx, BridgeTys>,
73        cx: &CompilerCtxt<'cx, BridgeTys>,
74    ) -> Self::T {
75        Statement {
76            kind: self.kind.stable(tables, cx),
77            span: self.source_info.span.stable(tables, cx),
78        }
79    }
80}
81
82impl<'tcx> Stable<'tcx> for mir::SourceInfo {
83    type T = crate::mir::SourceInfo;
84    fn stable<'cx>(
85        &self,
86        tables: &mut Tables<'cx, BridgeTys>,
87        cx: &CompilerCtxt<'cx, BridgeTys>,
88    ) -> Self::T {
89        crate::mir::SourceInfo { span: self.span.stable(tables, cx), scope: self.scope.into() }
90    }
91}
92
93impl<'tcx> Stable<'tcx> for mir::VarDebugInfoFragment<'tcx> {
94    type T = crate::mir::VarDebugInfoFragment;
95    fn stable<'cx>(
96        &self,
97        tables: &mut Tables<'cx, BridgeTys>,
98        cx: &CompilerCtxt<'cx, BridgeTys>,
99    ) -> Self::T {
100        VarDebugInfoFragment {
101            ty: self.ty.stable(tables, cx),
102            projection: self.projection.iter().map(|e| e.stable(tables, cx)).collect(),
103        }
104    }
105}
106
107impl<'tcx> Stable<'tcx> for mir::VarDebugInfoContents<'tcx> {
108    type T = crate::mir::VarDebugInfoContents;
109    fn stable<'cx>(
110        &self,
111        tables: &mut Tables<'cx, BridgeTys>,
112        cx: &CompilerCtxt<'cx, BridgeTys>,
113    ) -> Self::T {
114        match self {
115            mir::VarDebugInfoContents::Place(place) => {
116                crate::mir::VarDebugInfoContents::Place(place.stable(tables, cx))
117            }
118            mir::VarDebugInfoContents::Const(const_operand) => {
119                let op = ConstOperand {
120                    span: const_operand.span.stable(tables, cx),
121                    user_ty: const_operand.user_ty.map(|index| index.as_usize()),
122                    const_: const_operand.const_.stable(tables, cx),
123                };
124                crate::mir::VarDebugInfoContents::Const(op)
125            }
126        }
127    }
128}
129
130impl<'tcx> Stable<'tcx> for mir::StatementKind<'tcx> {
131    type T = crate::mir::StatementKind;
132    fn stable<'cx>(
133        &self,
134        tables: &mut Tables<'cx, BridgeTys>,
135        cx: &CompilerCtxt<'cx, BridgeTys>,
136    ) -> Self::T {
137        match self {
138            mir::StatementKind::Assign(assign) => crate::mir::StatementKind::Assign(
139                assign.0.stable(tables, cx),
140                assign.1.stable(tables, cx),
141            ),
142            mir::StatementKind::FakeRead(fake_read_place) => crate::mir::StatementKind::FakeRead(
143                fake_read_place.0.stable(tables, cx),
144                fake_read_place.1.stable(tables, cx),
145            ),
146            mir::StatementKind::SetDiscriminant { place, variant_index } => {
147                crate::mir::StatementKind::SetDiscriminant {
148                    place: place.as_ref().stable(tables, cx),
149                    variant_index: variant_index.stable(tables, cx),
150                }
151            }
152
153            mir::StatementKind::StorageLive(place) => {
154                crate::mir::StatementKind::StorageLive(place.stable(tables, cx))
155            }
156
157            mir::StatementKind::StorageDead(place) => {
158                crate::mir::StatementKind::StorageDead(place.stable(tables, cx))
159            }
160            mir::StatementKind::Retag(retag, place) => {
161                crate::mir::StatementKind::Retag(retag.stable(tables, cx), place.stable(tables, cx))
162            }
163            mir::StatementKind::PlaceMention(place) => {
164                crate::mir::StatementKind::PlaceMention(place.stable(tables, cx))
165            }
166            mir::StatementKind::AscribeUserType(place_projection, variance) => {
167                crate::mir::StatementKind::AscribeUserType {
168                    place: place_projection.as_ref().0.stable(tables, cx),
169                    projections: place_projection.as_ref().1.stable(tables, cx),
170                    variance: variance.stable(tables, cx),
171                }
172            }
173            mir::StatementKind::Coverage(coverage) => {
174                crate::mir::StatementKind::Coverage(opaque(coverage))
175            }
176            mir::StatementKind::Intrinsic(intrinstic) => {
177                crate::mir::StatementKind::Intrinsic(intrinstic.stable(tables, cx))
178            }
179            mir::StatementKind::ConstEvalCounter => crate::mir::StatementKind::ConstEvalCounter,
180            // BackwardIncompatibleDropHint has no semantics, so it is translated to Nop.
181            mir::StatementKind::BackwardIncompatibleDropHint { .. } => {
182                crate::mir::StatementKind::Nop
183            }
184            mir::StatementKind::Nop => crate::mir::StatementKind::Nop,
185        }
186    }
187}
188
189impl<'tcx> Stable<'tcx> for mir::Rvalue<'tcx> {
190    type T = crate::mir::Rvalue;
191    fn stable<'cx>(
192        &self,
193        tables: &mut Tables<'cx, BridgeTys>,
194        cx: &CompilerCtxt<'cx, BridgeTys>,
195    ) -> Self::T {
196        use rustc_middle::mir::Rvalue::*;
197        match self {
198            Use(op) => crate::mir::Rvalue::Use(op.stable(tables, cx)),
199            Repeat(op, len) => {
200                let len = len.stable(tables, cx);
201                crate::mir::Rvalue::Repeat(op.stable(tables, cx), len)
202            }
203            Ref(region, kind, place) => crate::mir::Rvalue::Ref(
204                region.stable(tables, cx),
205                kind.stable(tables, cx),
206                place.stable(tables, cx),
207            ),
208            ThreadLocalRef(def_id) => {
209                crate::mir::Rvalue::ThreadLocalRef(tables.crate_item(*def_id))
210            }
211            RawPtr(mutability, place) => crate::mir::Rvalue::AddressOf(
212                mutability.stable(tables, cx),
213                place.stable(tables, cx),
214            ),
215            Cast(cast_kind, op, ty) => crate::mir::Rvalue::Cast(
216                cast_kind.stable(tables, cx),
217                op.stable(tables, cx),
218                ty.stable(tables, cx),
219            ),
220            BinaryOp(bin_op, ops) => {
221                if let Some(bin_op) = bin_op.overflowing_to_wrapping() {
222                    crate::mir::Rvalue::CheckedBinaryOp(
223                        bin_op.stable(tables, cx),
224                        ops.0.stable(tables, cx),
225                        ops.1.stable(tables, cx),
226                    )
227                } else {
228                    crate::mir::Rvalue::BinaryOp(
229                        bin_op.stable(tables, cx),
230                        ops.0.stable(tables, cx),
231                        ops.1.stable(tables, cx),
232                    )
233                }
234            }
235            NullaryOp(null_op, ty) => {
236                crate::mir::Rvalue::NullaryOp(null_op.stable(tables, cx), ty.stable(tables, cx))
237            }
238            UnaryOp(un_op, op) => {
239                crate::mir::Rvalue::UnaryOp(un_op.stable(tables, cx), op.stable(tables, cx))
240            }
241            Discriminant(place) => crate::mir::Rvalue::Discriminant(place.stable(tables, cx)),
242            Aggregate(agg_kind, operands) => {
243                let operands = operands.iter().map(|op| op.stable(tables, cx)).collect();
244                crate::mir::Rvalue::Aggregate(agg_kind.stable(tables, cx), operands)
245            }
246            ShallowInitBox(op, ty) => {
247                crate::mir::Rvalue::ShallowInitBox(op.stable(tables, cx), ty.stable(tables, cx))
248            }
249            CopyForDeref(place) => crate::mir::Rvalue::CopyForDeref(place.stable(tables, cx)),
250            WrapUnsafeBinder(..) => todo!("FIXME(unsafe_binders):"),
251        }
252    }
253}
254
255impl<'tcx> Stable<'tcx> for mir::Mutability {
256    type T = crate::mir::Mutability;
257    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
258        use rustc_hir::Mutability::*;
259        match *self {
260            Not => crate::mir::Mutability::Not,
261            Mut => crate::mir::Mutability::Mut,
262        }
263    }
264}
265
266impl<'tcx> Stable<'tcx> for mir::RawPtrKind {
267    type T = crate::mir::RawPtrKind;
268    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
269        use mir::RawPtrKind::*;
270        match *self {
271            Const => crate::mir::RawPtrKind::Const,
272            Mut => crate::mir::RawPtrKind::Mut,
273            FakeForPtrMetadata => crate::mir::RawPtrKind::FakeForPtrMetadata,
274        }
275    }
276}
277
278impl<'tcx> Stable<'tcx> for mir::BorrowKind {
279    type T = crate::mir::BorrowKind;
280    fn stable<'cx>(
281        &self,
282        tables: &mut Tables<'cx, BridgeTys>,
283        cx: &CompilerCtxt<'cx, BridgeTys>,
284    ) -> Self::T {
285        use rustc_middle::mir::BorrowKind::*;
286        match *self {
287            Shared => crate::mir::BorrowKind::Shared,
288            Fake(kind) => crate::mir::BorrowKind::Fake(kind.stable(tables, cx)),
289            Mut { kind } => crate::mir::BorrowKind::Mut { kind: kind.stable(tables, cx) },
290        }
291    }
292}
293
294impl<'tcx> Stable<'tcx> for mir::MutBorrowKind {
295    type T = crate::mir::MutBorrowKind;
296    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
297        use rustc_middle::mir::MutBorrowKind::*;
298        match *self {
299            Default => crate::mir::MutBorrowKind::Default,
300            TwoPhaseBorrow => crate::mir::MutBorrowKind::TwoPhaseBorrow,
301            ClosureCapture => crate::mir::MutBorrowKind::ClosureCapture,
302        }
303    }
304}
305
306impl<'tcx> Stable<'tcx> for mir::FakeBorrowKind {
307    type T = crate::mir::FakeBorrowKind;
308    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
309        use rustc_middle::mir::FakeBorrowKind::*;
310        match *self {
311            Deep => crate::mir::FakeBorrowKind::Deep,
312            Shallow => crate::mir::FakeBorrowKind::Shallow,
313        }
314    }
315}
316
317impl<'tcx> Stable<'tcx> for mir::NullOp<'tcx> {
318    type T = crate::mir::NullOp;
319    fn stable<'cx>(
320        &self,
321        tables: &mut Tables<'cx, BridgeTys>,
322        cx: &CompilerCtxt<'cx, BridgeTys>,
323    ) -> Self::T {
324        use rustc_middle::mir::NullOp::*;
325        match self {
326            OffsetOf(indices) => crate::mir::NullOp::OffsetOf(
327                indices.iter().map(|idx| idx.stable(tables, cx)).collect(),
328            ),
329            UbChecks => crate::mir::NullOp::UbChecks,
330            ContractChecks => crate::mir::NullOp::ContractChecks,
331        }
332    }
333}
334
335impl<'tcx> Stable<'tcx> for mir::CastKind {
336    type T = crate::mir::CastKind;
337    fn stable<'cx>(
338        &self,
339        tables: &mut Tables<'cx, BridgeTys>,
340        cx: &CompilerCtxt<'cx, BridgeTys>,
341    ) -> Self::T {
342        use rustc_middle::mir::CastKind::*;
343        match self {
344            PointerExposeProvenance => crate::mir::CastKind::PointerExposeAddress,
345            PointerWithExposedProvenance => crate::mir::CastKind::PointerWithExposedProvenance,
346            PointerCoercion(c, _) => crate::mir::CastKind::PointerCoercion(c.stable(tables, cx)),
347            IntToInt => crate::mir::CastKind::IntToInt,
348            FloatToInt => crate::mir::CastKind::FloatToInt,
349            FloatToFloat => crate::mir::CastKind::FloatToFloat,
350            IntToFloat => crate::mir::CastKind::IntToFloat,
351            PtrToPtr => crate::mir::CastKind::PtrToPtr,
352            FnPtrToPtr => crate::mir::CastKind::FnPtrToPtr,
353            Transmute => crate::mir::CastKind::Transmute,
354            Subtype => crate::mir::CastKind::Subtype,
355        }
356    }
357}
358
359impl<'tcx> Stable<'tcx> for mir::FakeReadCause {
360    type T = crate::mir::FakeReadCause;
361    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
362        use rustc_middle::mir::FakeReadCause::*;
363        match self {
364            ForMatchGuard => crate::mir::FakeReadCause::ForMatchGuard,
365            ForMatchedPlace(local_def_id) => {
366                crate::mir::FakeReadCause::ForMatchedPlace(opaque(local_def_id))
367            }
368            ForGuardBinding => crate::mir::FakeReadCause::ForGuardBinding,
369            ForLet(local_def_id) => crate::mir::FakeReadCause::ForLet(opaque(local_def_id)),
370            ForIndex => crate::mir::FakeReadCause::ForIndex,
371        }
372    }
373}
374
375impl<'tcx> Stable<'tcx> for mir::Operand<'tcx> {
376    type T = crate::mir::Operand;
377    fn stable<'cx>(
378        &self,
379        tables: &mut Tables<'cx, BridgeTys>,
380        cx: &CompilerCtxt<'cx, BridgeTys>,
381    ) -> Self::T {
382        use rustc_middle::mir::Operand::*;
383        match self {
384            Copy(place) => crate::mir::Operand::Copy(place.stable(tables, cx)),
385            Move(place) => crate::mir::Operand::Move(place.stable(tables, cx)),
386            Constant(c) => crate::mir::Operand::Constant(c.stable(tables, cx)),
387        }
388    }
389}
390
391impl<'tcx> Stable<'tcx> for mir::ConstOperand<'tcx> {
392    type T = crate::mir::ConstOperand;
393
394    fn stable<'cx>(
395        &self,
396        tables: &mut Tables<'cx, BridgeTys>,
397        cx: &CompilerCtxt<'cx, BridgeTys>,
398    ) -> Self::T {
399        crate::mir::ConstOperand {
400            span: self.span.stable(tables, cx),
401            user_ty: self.user_ty.map(|u| u.as_usize()).or(None),
402            const_: self.const_.stable(tables, cx),
403        }
404    }
405}
406
407impl<'tcx> Stable<'tcx> for mir::Place<'tcx> {
408    type T = crate::mir::Place;
409    fn stable<'cx>(
410        &self,
411        tables: &mut Tables<'cx, BridgeTys>,
412        cx: &CompilerCtxt<'cx, BridgeTys>,
413    ) -> Self::T {
414        crate::mir::Place {
415            local: self.local.as_usize(),
416            projection: self.projection.iter().map(|e| e.stable(tables, cx)).collect(),
417        }
418    }
419}
420
421impl<'tcx> Stable<'tcx> for mir::PlaceElem<'tcx> {
422    type T = crate::mir::ProjectionElem;
423    fn stable<'cx>(
424        &self,
425        tables: &mut Tables<'cx, BridgeTys>,
426        cx: &CompilerCtxt<'cx, BridgeTys>,
427    ) -> Self::T {
428        use rustc_middle::mir::ProjectionElem::*;
429        match self {
430            Deref => crate::mir::ProjectionElem::Deref,
431            Field(idx, ty) => {
432                crate::mir::ProjectionElem::Field(idx.stable(tables, cx), ty.stable(tables, cx))
433            }
434            Index(local) => crate::mir::ProjectionElem::Index(local.stable(tables, cx)),
435            ConstantIndex { offset, min_length, from_end } => {
436                crate::mir::ProjectionElem::ConstantIndex {
437                    offset: *offset,
438                    min_length: *min_length,
439                    from_end: *from_end,
440                }
441            }
442            Subslice { from, to, from_end } => {
443                crate::mir::ProjectionElem::Subslice { from: *from, to: *to, from_end: *from_end }
444            }
445            // MIR includes an `Option<Symbol>` argument for `Downcast` that is the name of the
446            // variant, used for printing MIR. However this information should also be accessible
447            // via a lookup using the `VariantIdx`. The `Option<Symbol>` argument is therefore
448            // dropped when converting to Stable MIR. A brief justification for this decision can be
449            // found at https://github.com/rust-lang/rust/pull/117517#issuecomment-1811683486
450            Downcast(_, idx) => crate::mir::ProjectionElem::Downcast(idx.stable(tables, cx)),
451            OpaqueCast(ty) => crate::mir::ProjectionElem::OpaqueCast(ty.stable(tables, cx)),
452            UnwrapUnsafeBinder(..) => todo!("FIXME(unsafe_binders):"),
453        }
454    }
455}
456
457impl<'tcx> Stable<'tcx> for mir::UserTypeProjection {
458    type T = crate::mir::UserTypeProjection;
459
460    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
461        UserTypeProjection { base: self.base.as_usize(), projection: opaque(&self.projs) }
462    }
463}
464
465impl<'tcx> Stable<'tcx> for mir::Local {
466    type T = crate::mir::Local;
467    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
468        self.as_usize()
469    }
470}
471
472impl<'tcx> Stable<'tcx> for mir::RetagKind {
473    type T = crate::mir::RetagKind;
474    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
475        use rustc_middle::mir::RetagKind;
476        match self {
477            RetagKind::FnEntry => crate::mir::RetagKind::FnEntry,
478            RetagKind::TwoPhase => crate::mir::RetagKind::TwoPhase,
479            RetagKind::Raw => crate::mir::RetagKind::Raw,
480            RetagKind::Default => crate::mir::RetagKind::Default,
481        }
482    }
483}
484
485impl<'tcx> Stable<'tcx> for mir::UnwindAction {
486    type T = crate::mir::UnwindAction;
487    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
488        use rustc_middle::mir::UnwindAction;
489        match self {
490            UnwindAction::Continue => crate::mir::UnwindAction::Continue,
491            UnwindAction::Unreachable => crate::mir::UnwindAction::Unreachable,
492            UnwindAction::Terminate(_) => crate::mir::UnwindAction::Terminate,
493            UnwindAction::Cleanup(bb) => crate::mir::UnwindAction::Cleanup(bb.as_usize()),
494        }
495    }
496}
497
498impl<'tcx> Stable<'tcx> for mir::NonDivergingIntrinsic<'tcx> {
499    type T = crate::mir::NonDivergingIntrinsic;
500
501    fn stable<'cx>(
502        &self,
503        tables: &mut Tables<'cx, BridgeTys>,
504        cx: &CompilerCtxt<'cx, BridgeTys>,
505    ) -> Self::T {
506        use rustc_middle::mir::NonDivergingIntrinsic;
507
508        use crate::mir::CopyNonOverlapping;
509        match self {
510            NonDivergingIntrinsic::Assume(op) => {
511                crate::mir::NonDivergingIntrinsic::Assume(op.stable(tables, cx))
512            }
513            NonDivergingIntrinsic::CopyNonOverlapping(copy_non_overlapping) => {
514                crate::mir::NonDivergingIntrinsic::CopyNonOverlapping(CopyNonOverlapping {
515                    src: copy_non_overlapping.src.stable(tables, cx),
516                    dst: copy_non_overlapping.dst.stable(tables, cx),
517                    count: copy_non_overlapping.count.stable(tables, cx),
518                })
519            }
520        }
521    }
522}
523
524impl<'tcx> Stable<'tcx> for mir::AssertMessage<'tcx> {
525    type T = crate::mir::AssertMessage;
526    fn stable<'cx>(
527        &self,
528        tables: &mut Tables<'cx, BridgeTys>,
529        cx: &CompilerCtxt<'cx, BridgeTys>,
530    ) -> Self::T {
531        use rustc_middle::mir::AssertKind;
532        match self {
533            AssertKind::BoundsCheck { len, index } => crate::mir::AssertMessage::BoundsCheck {
534                len: len.stable(tables, cx),
535                index: index.stable(tables, cx),
536            },
537            AssertKind::Overflow(bin_op, op1, op2) => crate::mir::AssertMessage::Overflow(
538                bin_op.stable(tables, cx),
539                op1.stable(tables, cx),
540                op2.stable(tables, cx),
541            ),
542            AssertKind::OverflowNeg(op) => {
543                crate::mir::AssertMessage::OverflowNeg(op.stable(tables, cx))
544            }
545            AssertKind::DivisionByZero(op) => {
546                crate::mir::AssertMessage::DivisionByZero(op.stable(tables, cx))
547            }
548            AssertKind::RemainderByZero(op) => {
549                crate::mir::AssertMessage::RemainderByZero(op.stable(tables, cx))
550            }
551            AssertKind::ResumedAfterReturn(coroutine) => {
552                crate::mir::AssertMessage::ResumedAfterReturn(coroutine.stable(tables, cx))
553            }
554            AssertKind::ResumedAfterPanic(coroutine) => {
555                crate::mir::AssertMessage::ResumedAfterPanic(coroutine.stable(tables, cx))
556            }
557            AssertKind::ResumedAfterDrop(coroutine) => {
558                crate::mir::AssertMessage::ResumedAfterDrop(coroutine.stable(tables, cx))
559            }
560            AssertKind::MisalignedPointerDereference { required, found } => {
561                crate::mir::AssertMessage::MisalignedPointerDereference {
562                    required: required.stable(tables, cx),
563                    found: found.stable(tables, cx),
564                }
565            }
566            AssertKind::NullPointerDereference => crate::mir::AssertMessage::NullPointerDereference,
567            AssertKind::InvalidEnumConstruction(source) => {
568                crate::mir::AssertMessage::InvalidEnumConstruction(source.stable(tables, cx))
569            }
570        }
571    }
572}
573
574impl<'tcx> Stable<'tcx> for mir::BinOp {
575    type T = crate::mir::BinOp;
576    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
577        use rustc_middle::mir::BinOp;
578        match self {
579            BinOp::Add => crate::mir::BinOp::Add,
580            BinOp::AddUnchecked => crate::mir::BinOp::AddUnchecked,
581            BinOp::AddWithOverflow => bug!("AddWithOverflow should have been translated already"),
582            BinOp::Sub => crate::mir::BinOp::Sub,
583            BinOp::SubUnchecked => crate::mir::BinOp::SubUnchecked,
584            BinOp::SubWithOverflow => bug!("AddWithOverflow should have been translated already"),
585            BinOp::Mul => crate::mir::BinOp::Mul,
586            BinOp::MulUnchecked => crate::mir::BinOp::MulUnchecked,
587            BinOp::MulWithOverflow => bug!("AddWithOverflow should have been translated already"),
588            BinOp::Div => crate::mir::BinOp::Div,
589            BinOp::Rem => crate::mir::BinOp::Rem,
590            BinOp::BitXor => crate::mir::BinOp::BitXor,
591            BinOp::BitAnd => crate::mir::BinOp::BitAnd,
592            BinOp::BitOr => crate::mir::BinOp::BitOr,
593            BinOp::Shl => crate::mir::BinOp::Shl,
594            BinOp::ShlUnchecked => crate::mir::BinOp::ShlUnchecked,
595            BinOp::Shr => crate::mir::BinOp::Shr,
596            BinOp::ShrUnchecked => crate::mir::BinOp::ShrUnchecked,
597            BinOp::Eq => crate::mir::BinOp::Eq,
598            BinOp::Lt => crate::mir::BinOp::Lt,
599            BinOp::Le => crate::mir::BinOp::Le,
600            BinOp::Ne => crate::mir::BinOp::Ne,
601            BinOp::Ge => crate::mir::BinOp::Ge,
602            BinOp::Gt => crate::mir::BinOp::Gt,
603            BinOp::Cmp => crate::mir::BinOp::Cmp,
604            BinOp::Offset => crate::mir::BinOp::Offset,
605        }
606    }
607}
608
609impl<'tcx> Stable<'tcx> for mir::UnOp {
610    type T = crate::mir::UnOp;
611    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
612        use rustc_middle::mir::UnOp;
613        match self {
614            UnOp::Not => crate::mir::UnOp::Not,
615            UnOp::Neg => crate::mir::UnOp::Neg,
616            UnOp::PtrMetadata => crate::mir::UnOp::PtrMetadata,
617        }
618    }
619}
620
621impl<'tcx> Stable<'tcx> for mir::AggregateKind<'tcx> {
622    type T = crate::mir::AggregateKind;
623    fn stable<'cx>(
624        &self,
625        tables: &mut Tables<'cx, BridgeTys>,
626        cx: &CompilerCtxt<'cx, BridgeTys>,
627    ) -> Self::T {
628        match self {
629            mir::AggregateKind::Array(ty) => {
630                crate::mir::AggregateKind::Array(ty.stable(tables, cx))
631            }
632            mir::AggregateKind::Tuple => crate::mir::AggregateKind::Tuple,
633            mir::AggregateKind::Adt(def_id, var_idx, generic_arg, user_ty_index, field_idx) => {
634                crate::mir::AggregateKind::Adt(
635                    tables.adt_def(*def_id),
636                    var_idx.stable(tables, cx),
637                    generic_arg.stable(tables, cx),
638                    user_ty_index.map(|idx| idx.index()),
639                    field_idx.map(|idx| idx.index()),
640                )
641            }
642            mir::AggregateKind::Closure(def_id, generic_arg) => crate::mir::AggregateKind::Closure(
643                tables.closure_def(*def_id),
644                generic_arg.stable(tables, cx),
645            ),
646            mir::AggregateKind::Coroutine(def_id, generic_arg) => {
647                crate::mir::AggregateKind::Coroutine(
648                    tables.coroutine_def(*def_id),
649                    generic_arg.stable(tables, cx),
650                )
651            }
652            mir::AggregateKind::CoroutineClosure(def_id, generic_args) => {
653                crate::mir::AggregateKind::CoroutineClosure(
654                    tables.coroutine_closure_def(*def_id),
655                    generic_args.stable(tables, cx),
656                )
657            }
658            mir::AggregateKind::RawPtr(ty, mutability) => crate::mir::AggregateKind::RawPtr(
659                ty.stable(tables, cx),
660                mutability.stable(tables, cx),
661            ),
662        }
663    }
664}
665
666impl<'tcx> Stable<'tcx> for mir::InlineAsmOperand<'tcx> {
667    type T = crate::mir::InlineAsmOperand;
668    fn stable<'cx>(
669        &self,
670        tables: &mut Tables<'cx, BridgeTys>,
671        cx: &CompilerCtxt<'cx, BridgeTys>,
672    ) -> Self::T {
673        use rustc_middle::mir::InlineAsmOperand;
674
675        let (in_value, out_place) = match self {
676            InlineAsmOperand::In { value, .. } => (Some(value.stable(tables, cx)), None),
677            InlineAsmOperand::Out { place, .. } => {
678                (None, place.map(|place| place.stable(tables, cx)))
679            }
680            InlineAsmOperand::InOut { in_value, out_place, .. } => {
681                (Some(in_value.stable(tables, cx)), out_place.map(|place| place.stable(tables, cx)))
682            }
683            InlineAsmOperand::Const { .. }
684            | InlineAsmOperand::SymFn { .. }
685            | InlineAsmOperand::SymStatic { .. }
686            | InlineAsmOperand::Label { .. } => (None, None),
687        };
688
689        crate::mir::InlineAsmOperand { in_value, out_place, raw_rpr: format!("{self:?}") }
690    }
691}
692
693impl<'tcx> Stable<'tcx> for mir::Terminator<'tcx> {
694    type T = crate::mir::Terminator;
695    fn stable<'cx>(
696        &self,
697        tables: &mut Tables<'cx, BridgeTys>,
698        cx: &CompilerCtxt<'cx, BridgeTys>,
699    ) -> Self::T {
700        use crate::mir::Terminator;
701        Terminator {
702            kind: self.kind.stable(tables, cx),
703            span: self.source_info.span.stable(tables, cx),
704        }
705    }
706}
707
708impl<'tcx> Stable<'tcx> for mir::TerminatorKind<'tcx> {
709    type T = crate::mir::TerminatorKind;
710    fn stable<'cx>(
711        &self,
712        tables: &mut Tables<'cx, BridgeTys>,
713        cx: &CompilerCtxt<'cx, BridgeTys>,
714    ) -> Self::T {
715        use crate::mir::TerminatorKind;
716        match self {
717            mir::TerminatorKind::Goto { target } => {
718                TerminatorKind::Goto { target: target.as_usize() }
719            }
720            mir::TerminatorKind::SwitchInt { discr, targets } => TerminatorKind::SwitchInt {
721                discr: discr.stable(tables, cx),
722                targets: {
723                    let branches = targets.iter().map(|(val, target)| (val, target.as_usize()));
724                    crate::mir::SwitchTargets::new(
725                        branches.collect(),
726                        targets.otherwise().as_usize(),
727                    )
728                },
729            },
730            mir::TerminatorKind::UnwindResume => TerminatorKind::Resume,
731            mir::TerminatorKind::UnwindTerminate(_) => TerminatorKind::Abort,
732            mir::TerminatorKind::Return => TerminatorKind::Return,
733            mir::TerminatorKind::Unreachable => TerminatorKind::Unreachable,
734            mir::TerminatorKind::Drop {
735                place,
736                target,
737                unwind,
738                replace: _,
739                drop: _,
740                async_fut: _,
741            } => TerminatorKind::Drop {
742                place: place.stable(tables, cx),
743                target: target.as_usize(),
744                unwind: unwind.stable(tables, cx),
745            },
746            mir::TerminatorKind::Call {
747                func,
748                args,
749                destination,
750                target,
751                unwind,
752                call_source: _,
753                fn_span: _,
754            } => TerminatorKind::Call {
755                func: func.stable(tables, cx),
756                args: args.iter().map(|arg| arg.node.stable(tables, cx)).collect(),
757                destination: destination.stable(tables, cx),
758                target: target.map(|t| t.as_usize()),
759                unwind: unwind.stable(tables, cx),
760            },
761            mir::TerminatorKind::TailCall { func: _, args: _, fn_span: _ } => todo!(),
762            mir::TerminatorKind::Assert { cond, expected, msg, target, unwind } => {
763                TerminatorKind::Assert {
764                    cond: cond.stable(tables, cx),
765                    expected: *expected,
766                    msg: msg.stable(tables, cx),
767                    target: target.as_usize(),
768                    unwind: unwind.stable(tables, cx),
769                }
770            }
771            mir::TerminatorKind::InlineAsm {
772                asm_macro: _,
773                template,
774                operands,
775                options,
776                line_spans,
777                targets,
778                unwind,
779            } => TerminatorKind::InlineAsm {
780                template: format!("{template:?}"),
781                operands: operands.iter().map(|operand| operand.stable(tables, cx)).collect(),
782                options: format!("{options:?}"),
783                line_spans: format!("{line_spans:?}"),
784                // FIXME: Figure out how to do labels in SMIR
785                destination: targets.first().map(|d| d.as_usize()),
786                unwind: unwind.stable(tables, cx),
787            },
788            mir::TerminatorKind::Yield { .. }
789            | mir::TerminatorKind::CoroutineDrop
790            | mir::TerminatorKind::FalseEdge { .. }
791            | mir::TerminatorKind::FalseUnwind { .. } => unreachable!(),
792        }
793    }
794}
795
796impl<'tcx> Stable<'tcx> for mir::interpret::ConstAllocation<'tcx> {
797    type T = Allocation;
798
799    fn stable<'cx>(
800        &self,
801        tables: &mut Tables<'cx, BridgeTys>,
802        cx: &CompilerCtxt<'cx, BridgeTys>,
803    ) -> Self::T {
804        self.inner().stable(tables, cx)
805    }
806}
807
808impl<'tcx> Stable<'tcx> for mir::interpret::Allocation {
809    type T = crate::ty::Allocation;
810
811    fn stable<'cx>(
812        &self,
813        tables: &mut Tables<'cx, BridgeTys>,
814        cx: &CompilerCtxt<'cx, BridgeTys>,
815    ) -> Self::T {
816        use rustc_public_bridge::context::AllocRangeHelpers;
817        alloc::allocation_filter(
818            self,
819            cx.alloc_range(rustc_abi::Size::ZERO, self.size()),
820            tables,
821            cx,
822        )
823    }
824}
825
826impl<'tcx> Stable<'tcx> for mir::interpret::AllocId {
827    type T = crate::mir::alloc::AllocId;
828    fn stable<'cx>(
829        &self,
830        tables: &mut Tables<'cx, BridgeTys>,
831        _: &CompilerCtxt<'cx, BridgeTys>,
832    ) -> Self::T {
833        tables.create_alloc_id(*self)
834    }
835}
836
837impl<'tcx> Stable<'tcx> for mir::interpret::GlobalAlloc<'tcx> {
838    type T = GlobalAlloc;
839
840    fn stable<'cx>(
841        &self,
842        tables: &mut Tables<'cx, BridgeTys>,
843        cx: &CompilerCtxt<'cx, BridgeTys>,
844    ) -> Self::T {
845        match self {
846            mir::interpret::GlobalAlloc::Function { instance, .. } => {
847                GlobalAlloc::Function(instance.stable(tables, cx))
848            }
849            mir::interpret::GlobalAlloc::VTable(ty, dyn_ty) => {
850                // FIXME: Should we record the whole vtable?
851                GlobalAlloc::VTable(ty.stable(tables, cx), dyn_ty.principal().stable(tables, cx))
852            }
853            mir::interpret::GlobalAlloc::Static(def) => {
854                GlobalAlloc::Static(tables.static_def(*def))
855            }
856            mir::interpret::GlobalAlloc::Memory(alloc) => {
857                GlobalAlloc::Memory(alloc.stable(tables, cx))
858            }
859            mir::interpret::GlobalAlloc::TypeId { ty } => {
860                GlobalAlloc::TypeId { ty: ty.stable(tables, cx) }
861            }
862        }
863    }
864}
865
866impl<'tcx> Stable<'tcx> for rustc_middle::mir::Const<'tcx> {
867    type T = crate::ty::MirConst;
868
869    fn stable<'cx>(
870        &self,
871        tables: &mut Tables<'cx, BridgeTys>,
872        cx: &CompilerCtxt<'cx, BridgeTys>,
873    ) -> Self::T {
874        let id = tables.intern_mir_const(cx.lift(*self).unwrap());
875        match *self {
876            mir::Const::Ty(ty, c) => MirConst::new(
877                crate::ty::ConstantKind::Ty(c.stable(tables, cx)),
878                ty.stable(tables, cx),
879                id,
880            ),
881            mir::Const::Unevaluated(unev_const, ty) => {
882                let kind = crate::ty::ConstantKind::Unevaluated(crate::ty::UnevaluatedConst {
883                    def: tables.const_def(unev_const.def),
884                    args: unev_const.args.stable(tables, cx),
885                    promoted: unev_const.promoted.map(|u| u.as_u32()),
886                });
887                let ty = ty.stable(tables, cx);
888                MirConst::new(kind, ty, id)
889            }
890            mir::Const::Val(mir::ConstValue::ZeroSized, ty) => {
891                let ty = ty.stable(tables, cx);
892                MirConst::new(ConstantKind::ZeroSized, ty, id)
893            }
894            mir::Const::Val(val, ty) => {
895                let ty = cx.lift(ty).unwrap();
896                let val = cx.lift(val).unwrap();
897                let kind = ConstantKind::Allocated(alloc::new_allocation(ty, val, tables, cx));
898                let ty = ty.stable(tables, cx);
899                MirConst::new(kind, ty, id)
900            }
901        }
902    }
903}
904
905impl<'tcx> Stable<'tcx> for mir::interpret::ErrorHandled {
906    type T = Error;
907
908    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
909        bridge::Error::new(format!("{self:?}"))
910    }
911}
912
913impl<'tcx> Stable<'tcx> for MonoItem<'tcx> {
914    type T = crate::mir::mono::MonoItem;
915
916    fn stable<'cx>(
917        &self,
918        tables: &mut Tables<'cx, BridgeTys>,
919        cx: &CompilerCtxt<'cx, BridgeTys>,
920    ) -> Self::T {
921        use crate::mir::mono::MonoItem as StableMonoItem;
922        match self {
923            MonoItem::Fn(instance) => StableMonoItem::Fn(instance.stable(tables, cx)),
924            MonoItem::Static(def_id) => StableMonoItem::Static(tables.static_def(*def_id)),
925            MonoItem::GlobalAsm(item_id) => StableMonoItem::GlobalAsm(opaque(item_id)),
926        }
927    }
928}
rustc_public/unstable/convert/stable/mir.rs

rustc_public/unstable/convert/stable/
mir.rs
