rustc_public/unstable/convert/stable/
abi.rs

1//! Conversion of internal Rust compiler `rustc_target` and `rustc_abi` items to stable ones.
2
3#![allow(rustc::usage_of_qualified_ty)]
4
5use rustc_abi::{ArmCall, CanonAbi, InterruptKind, X86Call};
6use rustc_middle::ty;
7use rustc_public_bridge::Tables;
8use rustc_public_bridge::context::CompilerCtxt;
9use rustc_target::callconv;
10
11use crate::abi::{
12    AddressSpace, ArgAbi, CallConvention, FieldsShape, FloatLength, FnAbi, IntegerLength,
13    IntegerType, Layout, LayoutShape, NumScalableVectors, PassMode, Primitive, ReprFlags,
14    ReprOptions, Scalar, TagEncoding, TyAndLayout, ValueAbi, VariantFields, VariantsShape,
15    WrappingRange,
16};
17use crate::compiler_interface::BridgeTys;
18use crate::target::MachineSize as Size;
19use crate::ty::{Align, VariantIdx};
20use crate::unstable::Stable;
21use crate::{IndexedVal, opaque};
22
23impl<'tcx> Stable<'tcx> for rustc_abi::VariantIdx {
24    type T = VariantIdx;
25    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
26        VariantIdx::to_val(self.as_usize())
27    }
28}
29
30impl<'tcx> Stable<'tcx> for rustc_abi::Endian {
31    type T = crate::target::Endian;
32
33    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
34        match self {
35            rustc_abi::Endian::Little => crate::target::Endian::Little,
36            rustc_abi::Endian::Big => crate::target::Endian::Big,
37        }
38    }
39}
40
41impl<'tcx> Stable<'tcx> for rustc_abi::TyAndLayout<'tcx, ty::Ty<'tcx>> {
42    type T = TyAndLayout;
43
44    fn stable<'cx>(
45        &self,
46        tables: &mut Tables<'cx, BridgeTys>,
47        cx: &CompilerCtxt<'cx, BridgeTys>,
48    ) -> Self::T {
49        TyAndLayout { ty: self.ty.stable(tables, cx), layout: self.layout.stable(tables, cx) }
50    }
51}
52
53impl<'tcx> Stable<'tcx> for rustc_abi::Layout<'tcx> {
54    type T = Layout;
55
56    fn stable<'cx>(
57        &self,
58        tables: &mut Tables<'cx, BridgeTys>,
59        cx: &CompilerCtxt<'cx, BridgeTys>,
60    ) -> Self::T {
61        tables.layout_id(cx.lift(*self))
62    }
63}
64
65impl<'tcx> Stable<'tcx> for rustc_abi::LayoutData<rustc_abi::FieldIdx, rustc_abi::VariantIdx> {
66    type T = LayoutShape;
67
68    fn stable<'cx>(
69        &self,
70        tables: &mut Tables<'cx, BridgeTys>,
71        cx: &CompilerCtxt<'cx, BridgeTys>,
72    ) -> Self::T {
73        LayoutShape {
74            fields: self.fields.stable(tables, cx),
75            variants: self.variants.stable(tables, cx),
76            abi: self.backend_repr.stable(tables, cx),
77            abi_align: self.align.abi.stable(tables, cx),
78            size: self.size.stable(tables, cx),
79        }
80    }
81}
82
83impl<'tcx> Stable<'tcx> for callconv::FnAbi<'tcx, ty::Ty<'tcx>> {
84    type T = FnAbi;
85
86    fn stable<'cx>(
87        &self,
88        tables: &mut Tables<'cx, BridgeTys>,
89        cx: &CompilerCtxt<'cx, BridgeTys>,
90    ) -> Self::T {
91        if !(self.args.len() >= self.fixed_count as usize) {
    ::core::panicking::panic("assertion failed: self.args.len() >= self.fixed_count as usize")
};assert!(self.args.len() >= self.fixed_count as usize);
92        if !(!self.c_variadic ||
            #[allow(non_exhaustive_omitted_patterns)] match self.conv {
                CanonAbi::C => true,
                _ => false,
            }) {
    ::core::panicking::panic("assertion failed: !self.c_variadic || matches!(self.conv, CanonAbi::C)")
};assert!(!self.c_variadic || matches!(self.conv, CanonAbi::C));
93        FnAbi {
94            args: self.args.as_ref().stable(tables, cx),
95            ret: self.ret.stable(tables, cx),
96            fixed_count: self.fixed_count,
97            conv: self.conv.stable(tables, cx),
98            c_variadic: self.c_variadic,
99        }
100    }
101}
102
103impl<'tcx> Stable<'tcx> for callconv::ArgAbi<'tcx, ty::Ty<'tcx>> {
104    type T = ArgAbi;
105
106    fn stable<'cx>(
107        &self,
108        tables: &mut Tables<'cx, BridgeTys>,
109        cx: &CompilerCtxt<'cx, BridgeTys>,
110    ) -> Self::T {
111        ArgAbi {
112            ty: self.layout.ty.stable(tables, cx),
113            layout: self.layout.layout.stable(tables, cx),
114            mode: self.mode.stable(tables, cx),
115        }
116    }
117}
118
119impl<'tcx> Stable<'tcx> for CanonAbi {
120    type T = CallConvention;
121
122    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
123        match self {
124            CanonAbi::C => CallConvention::C,
125            CanonAbi::Rust => CallConvention::Rust,
126            CanonAbi::RustCold => CallConvention::Cold,
127            CanonAbi::RustPreserveNone => CallConvention::PreserveNone,
128            CanonAbi::RustTail => CallConvention::Tail,
129            CanonAbi::Custom => CallConvention::Custom,
130            CanonAbi::Swift => CallConvention::Swift,
131            CanonAbi::Arm(arm_call) => match arm_call {
132                ArmCall::Aapcs => CallConvention::ArmAapcs,
133                ArmCall::CCmseNonSecureCall => CallConvention::CCmseNonSecureCall,
134                ArmCall::CCmseNonSecureEntry => CallConvention::CCmseNonSecureEntry,
135            },
136            CanonAbi::GpuKernel => CallConvention::GpuKernel,
137            CanonAbi::Interrupt(interrupt_kind) => match interrupt_kind {
138                InterruptKind::Avr => CallConvention::AvrInterrupt,
139                InterruptKind::AvrNonBlocking => CallConvention::AvrNonBlockingInterrupt,
140                InterruptKind::Msp430 => CallConvention::Msp430Intr,
141                InterruptKind::RiscvMachine | InterruptKind::RiscvSupervisor => {
142                    CallConvention::RiscvInterrupt
143                }
144                InterruptKind::X86 => CallConvention::X86Intr,
145            },
146            CanonAbi::X86(x86_call) => match x86_call {
147                X86Call::Fastcall => CallConvention::X86Fastcall,
148                X86Call::Stdcall => CallConvention::X86Stdcall,
149                X86Call::SysV64 => CallConvention::X86_64SysV,
150                X86Call::Thiscall => CallConvention::X86ThisCall,
151                X86Call::Vectorcall => CallConvention::X86VectorCall,
152                X86Call::Win64 => CallConvention::X86_64Win64,
153            },
154        }
155    }
156}
157
158impl<'tcx> Stable<'tcx> for callconv::PassMode {
159    type T = PassMode;
160
161    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
162        match self {
163            callconv::PassMode::Ignore => PassMode::Ignore,
164            callconv::PassMode::Direct(attr) => PassMode::Direct(opaque(attr)),
165            callconv::PassMode::Pair(first, second) => {
166                PassMode::Pair(opaque(first), opaque(second))
167            }
168            callconv::PassMode::Cast { pad_i32, cast } => {
169                PassMode::Cast { pad_i32: *pad_i32, cast: opaque(cast) }
170            }
171            callconv::PassMode::Indirect { attrs, meta_attrs, on_stack } => PassMode::Indirect {
172                attrs: opaque(attrs),
173                meta_attrs: opaque(meta_attrs),
174                on_stack: *on_stack,
175            },
176        }
177    }
178}
179
180impl<'tcx> Stable<'tcx> for rustc_abi::FieldsShape<rustc_abi::FieldIdx> {
181    type T = FieldsShape;
182
183    fn stable<'cx>(
184        &self,
185        tables: &mut Tables<'cx, BridgeTys>,
186        cx: &CompilerCtxt<'cx, BridgeTys>,
187    ) -> Self::T {
188        match self {
189            rustc_abi::FieldsShape::Primitive => FieldsShape::Primitive,
190            rustc_abi::FieldsShape::Union(count) => FieldsShape::Union(*count),
191            rustc_abi::FieldsShape::Array { stride, count } => {
192                FieldsShape::Array { stride: stride.stable(tables, cx), count: *count }
193            }
194            rustc_abi::FieldsShape::Arbitrary { offsets, .. } => {
195                FieldsShape::Arbitrary { offsets: offsets.iter().as_slice().stable(tables, cx) }
196            }
197        }
198    }
199}
200
201impl<'tcx> Stable<'tcx> for rustc_abi::Variants<rustc_abi::FieldIdx, rustc_abi::VariantIdx> {
202    type T = VariantsShape;
203
204    fn stable<'cx>(
205        &self,
206        tables: &mut Tables<'cx, BridgeTys>,
207        cx: &CompilerCtxt<'cx, BridgeTys>,
208    ) -> Self::T {
209        match self {
210            rustc_abi::Variants::Single { index } => {
211                VariantsShape::Single { index: index.stable(tables, cx) }
212            }
213            rustc_abi::Variants::Empty => VariantsShape::Empty,
214            rustc_abi::Variants::Multiple { tag, tag_encoding, tag_field, variants } => {
215                VariantsShape::Multiple {
216                    tag: tag.stable(tables, cx),
217                    tag_encoding: tag_encoding.stable(tables, cx),
218                    tag_field: tag_field.stable(tables, cx),
219                    variants: variants
220                        .iter()
221                        .map(|v| VariantFields {
222                            offsets: v.field_offsets.iter().as_slice().stable(tables, cx),
223                        })
224                        .collect(),
225                }
226            }
227        }
228    }
229}
230
231impl<'tcx> Stable<'tcx> for rustc_abi::TagEncoding<rustc_abi::VariantIdx> {
232    type T = TagEncoding;
233
234    fn stable<'cx>(
235        &self,
236        tables: &mut Tables<'cx, BridgeTys>,
237        cx: &CompilerCtxt<'cx, BridgeTys>,
238    ) -> Self::T {
239        match self {
240            rustc_abi::TagEncoding::Direct => TagEncoding::Direct,
241            rustc_abi::TagEncoding::Niche { untagged_variant, niche_variants, niche_start } => {
242                TagEncoding::Niche {
243                    untagged_variant: untagged_variant.stable(tables, cx),
244                    niche_variants: niche_variants.stable(tables, cx),
245                    niche_start: *niche_start,
246                }
247            }
248        }
249    }
250}
251
252impl<'tcx> Stable<'tcx> for rustc_abi::NumScalableVectors {
253    type T = NumScalableVectors;
254
255    fn stable<'cx>(
256        &self,
257        _tables: &mut Tables<'cx, BridgeTys>,
258        _cx: &CompilerCtxt<'cx, BridgeTys>,
259    ) -> Self::T {
260        NumScalableVectors(self.0)
261    }
262}
263
264impl<'tcx> Stable<'tcx> for rustc_abi::BackendLaneCount {
265    type T = u64;
266
267    fn stable<'cx>(
268        &self,
269        _tables: &mut Tables<'cx, BridgeTys>,
270        _cx: &CompilerCtxt<'cx, BridgeTys>,
271    ) -> Self::T {
272        self.as_u64()
273    }
274}
275
276impl<'tcx> Stable<'tcx> for rustc_abi::BackendRepr {
277    type T = ValueAbi;
278
279    fn stable<'cx>(
280        &self,
281        tables: &mut Tables<'cx, BridgeTys>,
282        cx: &CompilerCtxt<'cx, BridgeTys>,
283    ) -> Self::T {
284        match *self {
285            rustc_abi::BackendRepr::Scalar(scalar) => ValueAbi::Scalar(scalar.stable(tables, cx)),
286            rustc_abi::BackendRepr::ScalarPair { a: first, b: second, b_offset: second_offset } => {
287                ValueAbi::ScalarPair {
288                    a: first.stable(tables, cx),
289                    b: second.stable(tables, cx),
290                    b_offset: second_offset.stable(tables, cx),
291                }
292            }
293            rustc_abi::BackendRepr::SimdVector { element, count } => ValueAbi::Vector {
294                element: element.stable(tables, cx),
295                count: count.stable(tables, cx),
296            },
297            rustc_abi::BackendRepr::SimdScalableVector { element, count, number_of_vectors } => {
298                ValueAbi::ScalableVector {
299                    element: element.stable(tables, cx),
300                    count: count.stable(tables, cx),
301                    number_of_vectors: number_of_vectors.stable(tables, cx),
302                }
303            }
304            rustc_abi::BackendRepr::Memory { sized } => ValueAbi::Aggregate { sized },
305        }
306    }
307}
308
309impl<'tcx> Stable<'tcx> for rustc_abi::Size {
310    type T = Size;
311
312    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
313        Size::from_bits(self.bits_usize())
314    }
315}
316
317impl<'tcx> Stable<'tcx> for rustc_abi::Align {
318    type T = Align;
319
320    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
321        self.bytes()
322    }
323}
324
325impl<'tcx> Stable<'tcx> for rustc_abi::Scalar {
326    type T = Scalar;
327
328    fn stable<'cx>(
329        &self,
330        tables: &mut Tables<'cx, BridgeTys>,
331        cx: &CompilerCtxt<'cx, BridgeTys>,
332    ) -> Self::T {
333        match self {
334            rustc_abi::Scalar::Initialized { value, valid_range } => Scalar::Initialized {
335                value: value.stable(tables, cx),
336                valid_range: valid_range.stable(tables, cx),
337            },
338            rustc_abi::Scalar::Union { value } => Scalar::Union { value: value.stable(tables, cx) },
339        }
340    }
341}
342
343impl<'tcx> Stable<'tcx> for rustc_abi::Primitive {
344    type T = Primitive;
345
346    fn stable<'cx>(
347        &self,
348        tables: &mut Tables<'cx, BridgeTys>,
349        cx: &CompilerCtxt<'cx, BridgeTys>,
350    ) -> Self::T {
351        match self {
352            rustc_abi::Primitive::Int(length, signed) => {
353                Primitive::Int { length: length.stable(tables, cx), signed: *signed }
354            }
355            rustc_abi::Primitive::Float(length) => {
356                Primitive::Float { length: length.stable(tables, cx) }
357            }
358            rustc_abi::Primitive::Pointer(space) => Primitive::Pointer(space.stable(tables, cx)),
359        }
360    }
361}
362
363impl<'tcx> Stable<'tcx> for rustc_abi::AddressSpace {
364    type T = AddressSpace;
365
366    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
367        AddressSpace(self.0)
368    }
369}
370
371impl<'tcx> Stable<'tcx> for rustc_abi::Integer {
372    type T = IntegerLength;
373
374    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
375        match self {
376            rustc_abi::Integer::I8 => IntegerLength::I8,
377            rustc_abi::Integer::I16 => IntegerLength::I16,
378            rustc_abi::Integer::I32 => IntegerLength::I32,
379            rustc_abi::Integer::I64 => IntegerLength::I64,
380            rustc_abi::Integer::I128 => IntegerLength::I128,
381        }
382    }
383}
384
385impl<'tcx> Stable<'tcx> for rustc_abi::Float {
386    type T = FloatLength;
387
388    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
389        match self {
390            rustc_abi::Float::F16 => FloatLength::F16,
391            rustc_abi::Float::F32 => FloatLength::F32,
392            rustc_abi::Float::F64 => FloatLength::F64,
393            rustc_abi::Float::F128 => FloatLength::F128,
394        }
395    }
396}
397
398impl<'tcx> Stable<'tcx> for rustc_abi::WrappingRange {
399    type T = WrappingRange;
400
401    fn stable(&self, _: &mut Tables<'_, BridgeTys>, _: &CompilerCtxt<'_, BridgeTys>) -> Self::T {
402        WrappingRange { start: self.start, end: self.end }
403    }
404}
405
406impl<'tcx> Stable<'tcx> for rustc_abi::ReprFlags {
407    type T = ReprFlags;
408
409    fn stable<'cx>(
410        &self,
411        _tables: &mut Tables<'cx, BridgeTys>,
412        _cx: &CompilerCtxt<'cx, BridgeTys>,
413    ) -> Self::T {
414        ReprFlags {
415            is_simd: self.intersects(Self::IS_SIMD),
416            is_c: self.intersects(Self::IS_C),
417            is_transparent: self.intersects(Self::IS_TRANSPARENT),
418            is_linear: self.intersects(Self::IS_LINEAR),
419        }
420    }
421}
422
423impl<'tcx> Stable<'tcx> for rustc_abi::IntegerType {
424    type T = IntegerType;
425
426    fn stable<'cx>(
427        &self,
428        tables: &mut Tables<'cx, BridgeTys>,
429        cx: &CompilerCtxt<'cx, BridgeTys>,
430    ) -> Self::T {
431        match self {
432            rustc_abi::IntegerType::Pointer(signed) => IntegerType::Pointer { is_signed: *signed },
433            rustc_abi::IntegerType::Fixed(integer, signed) => {
434                IntegerType::Fixed { length: integer.stable(tables, cx), is_signed: *signed }
435            }
436        }
437    }
438}
439
440impl<'tcx> Stable<'tcx> for rustc_abi::ReprOptions {
441    type T = ReprOptions;
442
443    fn stable<'cx>(
444        &self,
445        tables: &mut Tables<'cx, BridgeTys>,
446        cx: &CompilerCtxt<'cx, BridgeTys>,
447    ) -> Self::T {
448        ReprOptions {
449            int: self.int.map(|int| int.stable(tables, cx)),
450            align: self.align.map(|align| align.stable(tables, cx)),
451            pack: self.pack.map(|pack| pack.stable(tables, cx)),
452            flags: self.flags.stable(tables, cx),
453        }
454    }
455}
rustc_public/unstable/convert/stable/abi.rs

rustc_public/unstable/convert/stable/
abi.rs
