rustc_codegen_ssa/traits/
builder.rs

Help
1use std::assert_matches::assert_matches;
2use std::ops::Deref;
3
4use rustc_abi::{Align, BackendRepr, Scalar, Size, WrappingRange};
5use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrs;
6use rustc_middle::ty::layout::{FnAbiOf, LayoutOf, TyAndLayout};
7use rustc_middle::ty::{Instance, Ty};
8use rustc_session::config::OptLevel;
9use rustc_span::Span;
10use rustc_target::callconv::FnAbi;
11
12use super::abi::AbiBuilderMethods;
13use super::asm::AsmBuilderMethods;
14use super::consts::ConstCodegenMethods;
15use super::coverageinfo::CoverageInfoBuilderMethods;
16use super::debuginfo::DebugInfoBuilderMethods;
17use super::intrinsic::IntrinsicCallBuilderMethods;
18use super::misc::MiscCodegenMethods;
19use super::type_::{ArgAbiBuilderMethods, BaseTypeCodegenMethods, LayoutTypeCodegenMethods};
20use super::{CodegenMethods, StaticBuilderMethods};
21use crate::MemFlags;
22use crate::common::{
23    AtomicOrdering, AtomicRmwBinOp, IntPredicate, RealPredicate, SynchronizationScope, TypeKind,
24};
25use crate::mir::operand::{OperandRef, OperandValue};
26use crate::mir::place::{PlaceRef, PlaceValue};
27
28#[derive(Copy, Clone, Debug)]
29pub enum OverflowOp {
30    Add,
31    Sub,
32    Mul,
33}
34
35pub trait BuilderMethods<'a, 'tcx>:
36    Sized
37    + LayoutOf<'tcx, LayoutOfResult = TyAndLayout<'tcx>>
38    + FnAbiOf<'tcx, FnAbiOfResult = &'tcx FnAbi<'tcx, Ty<'tcx>>>
39    + Deref<Target = Self::CodegenCx>
40    + CoverageInfoBuilderMethods<'tcx>
41    + DebugInfoBuilderMethods
42    + ArgAbiBuilderMethods<'tcx>
43    + AbiBuilderMethods<'tcx>
44    + IntrinsicCallBuilderMethods<'tcx>
45    + AsmBuilderMethods<'tcx>
46    + StaticBuilderMethods
47{
48    // `BackendTypes` is a supertrait of both `CodegenMethods` and
49    // `BuilderMethods`. This bound ensures all impls agree on the associated
50    // types within.
51    type CodegenCx: CodegenMethods<
52            'tcx,
53            Value = Self::Value,
54            Metadata = Self::Metadata,
55            Function = Self::Function,
56            BasicBlock = Self::BasicBlock,
57            Type = Self::Type,
58            Funclet = Self::Funclet,
59            DIScope = Self::DIScope,
60            DILocation = Self::DILocation,
61            DIVariable = Self::DIVariable,
62        >;
63
64    fn build(cx: &'a Self::CodegenCx, llbb: Self::BasicBlock) -> Self;
65
66    fn cx(&self) -> &Self::CodegenCx;
67    fn llbb(&self) -> Self::BasicBlock;
68
69    fn set_span(&mut self, span: Span);
70
71    // FIXME(eddyb) replace uses of this with `append_sibling_block`.
72    fn append_block(cx: &'a Self::CodegenCx, llfn: Self::Function, name: &str) -> Self::BasicBlock;
73
74    fn append_sibling_block(&mut self, name: &str) -> Self::BasicBlock;
75
76    fn switch_to_block(&mut self, llbb: Self::BasicBlock);
77
78    fn ret_void(&mut self);
79    fn ret(&mut self, v: Self::Value);
80    fn br(&mut self, dest: Self::BasicBlock);
81    fn cond_br(
82        &mut self,
83        cond: Self::Value,
84        then_llbb: Self::BasicBlock,
85        else_llbb: Self::BasicBlock,
86    );
87
88    // Conditional with expectation.
89    //
90    // This function is opt-in for back ends.
91    //
92    // The default implementation calls `self.expect()` before emiting the branch
93    // by calling `self.cond_br()`
94    fn cond_br_with_expect(
95        &mut self,
96        mut cond: Self::Value,
97        then_llbb: Self::BasicBlock,
98        else_llbb: Self::BasicBlock,
99        expect: Option<bool>,
100    ) {
101        if let Some(expect) = expect {
102            cond = self.expect(cond, expect);
103        }
104        self.cond_br(cond, then_llbb, else_llbb)
105    }
106
107    fn switch(
108        &mut self,
109        v: Self::Value,
110        else_llbb: Self::BasicBlock,
111        cases: impl ExactSizeIterator<Item = (u128, Self::BasicBlock)>,
112    );
113    fn invoke(
114        &mut self,
115        llty: Self::Type,
116        fn_attrs: Option<&CodegenFnAttrs>,
117        fn_abi: Option<&FnAbi<'tcx, Ty<'tcx>>>,
118        llfn: Self::Value,
119        args: &[Self::Value],
120        then: Self::BasicBlock,
121        catch: Self::BasicBlock,
122        funclet: Option<&Self::Funclet>,
123        instance: Option<Instance<'tcx>>,
124    ) -> Self::Value;
125    fn unreachable(&mut self);
126
127    fn add(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
128    fn fadd(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
129    fn fadd_fast(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
130    fn fadd_algebraic(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
131    fn sub(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
132    fn fsub(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
133    fn fsub_fast(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
134    fn fsub_algebraic(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
135    fn mul(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
136    fn fmul(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
137    fn fmul_fast(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
138    fn fmul_algebraic(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
139    fn udiv(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
140    fn exactudiv(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
141    fn sdiv(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
142    fn exactsdiv(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
143    fn fdiv(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
144    fn fdiv_fast(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
145    fn fdiv_algebraic(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
146    fn urem(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
147    fn srem(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
148    fn frem(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
149    fn frem_fast(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
150    fn frem_algebraic(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
151    /// Generate a left-shift. Both operands must have the same size. The right operand must be
152    /// interpreted as unsigned and can be assumed to be less than the size of the left operand.
153    fn shl(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
154    /// Generate a logical right-shift. Both operands must have the same size. The right operand
155    /// must be interpreted as unsigned and can be assumed to be less than the size of the left
156    /// operand.
157    fn lshr(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
158    /// Generate an arithmetic right-shift. Both operands must have the same size. The right operand
159    /// must be interpreted as unsigned and can be assumed to be less than the size of the left
160    /// operand.
161    fn ashr(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
162    fn unchecked_sadd(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value {
163        self.add(lhs, rhs)
164    }
165    fn unchecked_uadd(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value {
166        self.add(lhs, rhs)
167    }
168    fn unchecked_suadd(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value {
169        self.unchecked_sadd(lhs, rhs)
170    }
171    fn unchecked_ssub(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value {
172        self.sub(lhs, rhs)
173    }
174    fn unchecked_usub(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value {
175        self.sub(lhs, rhs)
176    }
177    fn unchecked_susub(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value {
178        self.unchecked_ssub(lhs, rhs)
179    }
180    fn unchecked_smul(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value {
181        self.mul(lhs, rhs)
182    }
183    fn unchecked_umul(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value {
184        self.mul(lhs, rhs)
185    }
186    fn unchecked_sumul(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value {
187        // Which to default to is a fairly arbitrary choice,
188        // but this is what slice layout was using before.
189        self.unchecked_smul(lhs, rhs)
190    }
191    fn and(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
192    fn or(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
193    /// Defaults to [`Self::or`], but guarantees `(lhs & rhs) == 0` so some backends
194    /// can emit something more helpful for optimizations.
195    fn or_disjoint(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value {
196        self.or(lhs, rhs)
197    }
198    fn xor(&mut self, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
199    fn neg(&mut self, v: Self::Value) -> Self::Value;
200    fn fneg(&mut self, v: Self::Value) -> Self::Value;
201    fn not(&mut self, v: Self::Value) -> Self::Value;
202
203    fn checked_binop(
204        &mut self,
205        oop: OverflowOp,
206        ty: Ty<'_>,
207        lhs: Self::Value,
208        rhs: Self::Value,
209    ) -> (Self::Value, Self::Value);
210
211    fn from_immediate(&mut self, val: Self::Value) -> Self::Value;
212    fn to_immediate(&mut self, val: Self::Value, layout: TyAndLayout<'_>) -> Self::Value {
213        if let BackendRepr::Scalar(scalar) = layout.backend_repr {
214            self.to_immediate_scalar(val, scalar)
215        } else {
216            val
217        }
218    }
219    fn to_immediate_scalar(&mut self, val: Self::Value, scalar: Scalar) -> Self::Value;
220
221    fn alloca(&mut self, size: Size, align: Align) -> Self::Value;
222    fn dynamic_alloca(&mut self, size: Self::Value, align: Align) -> Self::Value;
223
224    fn load(&mut self, ty: Self::Type, ptr: Self::Value, align: Align) -> Self::Value;
225    fn volatile_load(&mut self, ty: Self::Type, ptr: Self::Value) -> Self::Value;
226    fn atomic_load(
227        &mut self,
228        ty: Self::Type,
229        ptr: Self::Value,
230        order: AtomicOrdering,
231        size: Size,
232    ) -> Self::Value;
233    fn load_from_place(&mut self, ty: Self::Type, place: PlaceValue<Self::Value>) -> Self::Value {
234        assert_eq!(place.llextra, None);
235        self.load(ty, place.llval, place.align)
236    }
237    fn load_operand(&mut self, place: PlaceRef<'tcx, Self::Value>)
238    -> OperandRef<'tcx, Self::Value>;
239
240    /// Called for Rvalue::Repeat when the elem is neither a ZST nor optimizable using memset.
241    fn write_operand_repeatedly(
242        &mut self,
243        elem: OperandRef<'tcx, Self::Value>,
244        count: u64,
245        dest: PlaceRef<'tcx, Self::Value>,
246    );
247
248    /// Emits an `assume` that the integer value `imm` of type `ty` is contained in `range`.
249    ///
250    /// This *always* emits the assumption, so you probably want to check the
251    /// optimization level and `Scalar::is_always_valid` before calling it.
252    fn assume_integer_range(&mut self, imm: Self::Value, ty: Self::Type, range: WrappingRange) {
253        let WrappingRange { start, end } = range;
254
255        // Perhaps one day we'll be able to use assume operand bundles for this,
256        // but for now this encoding with a single icmp+assume is best per
257        // <https://github.com/llvm/llvm-project/issues/123278#issuecomment-2597440158>
258        let shifted = if start == 0 {
259            imm
260        } else {
261            let low = self.const_uint_big(ty, start);
262            self.sub(imm, low)
263        };
264        let width = self.const_uint_big(ty, u128::wrapping_sub(end, start));
265        let cmp = self.icmp(IntPredicate::IntULE, shifted, width);
266        self.assume(cmp);
267    }
268
269    /// Emits an `assume` that the `val` of pointer type is non-null.
270    ///
271    /// You may want to check the optimization level before bothering calling this.
272    fn assume_nonnull(&mut self, val: Self::Value) {
273        // Arguably in LLVM it'd be better to emit an assume operand bundle instead
274        // <https://llvm.org/docs/LangRef.html#assume-operand-bundles>
275        // but this works fine for all backends.
276
277        let null = self.const_null(self.type_ptr());
278        let is_null = self.icmp(IntPredicate::IntNE, val, null);
279        self.assume(is_null);
280    }
281
282    fn range_metadata(&mut self, load: Self::Value, range: WrappingRange);
283    fn nonnull_metadata(&mut self, load: Self::Value);
284
285    fn store(&mut self, val: Self::Value, ptr: Self::Value, align: Align) -> Self::Value;
286    fn store_to_place(&mut self, val: Self::Value, place: PlaceValue<Self::Value>) -> Self::Value {
287        assert_eq!(place.llextra, None);
288        self.store(val, place.llval, place.align)
289    }
290    fn store_with_flags(
291        &mut self,
292        val: Self::Value,
293        ptr: Self::Value,
294        align: Align,
295        flags: MemFlags,
296    ) -> Self::Value;
297    fn store_to_place_with_flags(
298        &mut self,
299        val: Self::Value,
300        place: PlaceValue<Self::Value>,
301        flags: MemFlags,
302    ) -> Self::Value {
303        assert_eq!(place.llextra, None);
304        self.store_with_flags(val, place.llval, place.align, flags)
305    }
306    fn atomic_store(
307        &mut self,
308        val: Self::Value,
309        ptr: Self::Value,
310        order: AtomicOrdering,
311        size: Size,
312    );
313
314    fn gep(&mut self, ty: Self::Type, ptr: Self::Value, indices: &[Self::Value]) -> Self::Value;
315    fn inbounds_gep(
316        &mut self,
317        ty: Self::Type,
318        ptr: Self::Value,
319        indices: &[Self::Value],
320    ) -> Self::Value;
321    fn ptradd(&mut self, ptr: Self::Value, offset: Self::Value) -> Self::Value {
322        self.gep(self.cx().type_i8(), ptr, &[offset])
323    }
324    fn inbounds_ptradd(&mut self, ptr: Self::Value, offset: Self::Value) -> Self::Value {
325        self.inbounds_gep(self.cx().type_i8(), ptr, &[offset])
326    }
327
328    fn trunc(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
329    fn sext(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
330    fn fptoui_sat(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
331    fn fptosi_sat(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
332    fn fptoui(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
333    fn fptosi(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
334    fn uitofp(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
335    fn sitofp(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
336    fn fptrunc(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
337    fn fpext(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
338    fn ptrtoint(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
339    fn inttoptr(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
340    fn bitcast(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
341    fn intcast(&mut self, val: Self::Value, dest_ty: Self::Type, is_signed: bool) -> Self::Value;
342    fn pointercast(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
343
344    fn cast_float_to_int(
345        &mut self,
346        signed: bool,
347        x: Self::Value,
348        dest_ty: Self::Type,
349    ) -> Self::Value {
350        let in_ty = self.cx().val_ty(x);
351        let (float_ty, int_ty) = if self.cx().type_kind(dest_ty) == TypeKind::Vector
352            && self.cx().type_kind(in_ty) == TypeKind::Vector
353        {
354            (self.cx().element_type(in_ty), self.cx().element_type(dest_ty))
355        } else {
356            (in_ty, dest_ty)
357        };
358        assert_matches!(
359            self.cx().type_kind(float_ty),
360            TypeKind::Half | TypeKind::Float | TypeKind::Double | TypeKind::FP128
361        );
362        assert_eq!(self.cx().type_kind(int_ty), TypeKind::Integer);
363
364        if let Some(false) = self.cx().sess().opts.unstable_opts.saturating_float_casts {
365            return if signed { self.fptosi(x, dest_ty) } else { self.fptoui(x, dest_ty) };
366        }
367
368        if signed { self.fptosi_sat(x, dest_ty) } else { self.fptoui_sat(x, dest_ty) }
369    }
370
371    fn icmp(&mut self, op: IntPredicate, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
372    fn fcmp(&mut self, op: RealPredicate, lhs: Self::Value, rhs: Self::Value) -> Self::Value;
373
374    fn memcpy(
375        &mut self,
376        dst: Self::Value,
377        dst_align: Align,
378        src: Self::Value,
379        src_align: Align,
380        size: Self::Value,
381        flags: MemFlags,
382    );
383    fn memmove(
384        &mut self,
385        dst: Self::Value,
386        dst_align: Align,
387        src: Self::Value,
388        src_align: Align,
389        size: Self::Value,
390        flags: MemFlags,
391    );
392    fn memset(
393        &mut self,
394        ptr: Self::Value,
395        fill_byte: Self::Value,
396        size: Self::Value,
397        align: Align,
398        flags: MemFlags,
399    );
400
401    /// *Typed* copy for non-overlapping places.
402    ///
403    /// Has a default implementation in terms of `memcpy`, but specific backends
404    /// can override to do something smarter if possible.
405    ///
406    /// (For example, typed load-stores with alias metadata.)
407    fn typed_place_copy(
408        &mut self,
409        dst: PlaceValue<Self::Value>,
410        src: PlaceValue<Self::Value>,
411        layout: TyAndLayout<'tcx>,
412    ) {
413        self.typed_place_copy_with_flags(dst, src, layout, MemFlags::empty());
414    }
415
416    fn typed_place_copy_with_flags(
417        &mut self,
418        dst: PlaceValue<Self::Value>,
419        src: PlaceValue<Self::Value>,
420        layout: TyAndLayout<'tcx>,
421        flags: MemFlags,
422    ) {
423        assert!(layout.is_sized(), "cannot typed-copy an unsigned type");
424        assert!(src.llextra.is_none(), "cannot directly copy from unsized values");
425        assert!(dst.llextra.is_none(), "cannot directly copy into unsized values");
426        if flags.contains(MemFlags::NONTEMPORAL) {
427            // HACK(nox): This is inefficient but there is no nontemporal memcpy.
428            let ty = self.backend_type(layout);
429            let val = self.load_from_place(ty, src);
430            self.store_to_place_with_flags(val, dst, flags);
431        } else if self.sess().opts.optimize == OptLevel::No && self.is_backend_immediate(layout) {
432            // If we're not optimizing, the aliasing information from `memcpy`
433            // isn't useful, so just load-store the value for smaller code.
434            let temp = self.load_operand(src.with_type(layout));
435            temp.val.store_with_flags(self, dst.with_type(layout), flags);
436        } else if !layout.is_zst() {
437            let bytes = self.const_usize(layout.size.bytes());
438            self.memcpy(dst.llval, dst.align, src.llval, src.align, bytes, flags);
439        }
440    }
441
442    /// *Typed* swap for non-overlapping places.
443    ///
444    /// Avoids `alloca`s for Immediates and ScalarPairs.
445    ///
446    /// FIXME: Maybe do something smarter for Ref types too?
447    /// For now, the `typed_swap_nonoverlapping` intrinsic just doesn't call this for those
448    /// cases (in non-debug), preferring the fallback body instead.
449    fn typed_place_swap(
450        &mut self,
451        left: PlaceValue<Self::Value>,
452        right: PlaceValue<Self::Value>,
453        layout: TyAndLayout<'tcx>,
454    ) {
455        let mut temp = self.load_operand(left.with_type(layout));
456        if let OperandValue::Ref(..) = temp.val {
457            // The SSA value isn't stand-alone, so we need to copy it elsewhere
458            let alloca = PlaceRef::alloca(self, layout);
459            self.typed_place_copy(alloca.val, left, layout);
460            temp = self.load_operand(alloca);
461        }
462        self.typed_place_copy(left, right, layout);
463        temp.val.store(self, right.with_type(layout));
464    }
465
466    fn select(
467        &mut self,
468        cond: Self::Value,
469        then_val: Self::Value,
470        else_val: Self::Value,
471    ) -> Self::Value;
472
473    fn va_arg(&mut self, list: Self::Value, ty: Self::Type) -> Self::Value;
474    fn extract_element(&mut self, vec: Self::Value, idx: Self::Value) -> Self::Value;
475    fn vector_splat(&mut self, num_elts: usize, elt: Self::Value) -> Self::Value;
476    fn extract_value(&mut self, agg_val: Self::Value, idx: u64) -> Self::Value;
477    fn insert_value(&mut self, agg_val: Self::Value, elt: Self::Value, idx: u64) -> Self::Value;
478
479    fn set_personality_fn(&mut self, personality: Self::Value);
480
481    // These are used by everyone except msvc
482    fn cleanup_landing_pad(&mut self, pers_fn: Self::Value) -> (Self::Value, Self::Value);
483    fn filter_landing_pad(&mut self, pers_fn: Self::Value) -> (Self::Value, Self::Value);
484    fn resume(&mut self, exn0: Self::Value, exn1: Self::Value);
485
486    // These are used only by msvc
487    fn cleanup_pad(&mut self, parent: Option<Self::Value>, args: &[Self::Value]) -> Self::Funclet;
488    fn cleanup_ret(&mut self, funclet: &Self::Funclet, unwind: Option<Self::BasicBlock>);
489    fn catch_pad(&mut self, parent: Self::Value, args: &[Self::Value]) -> Self::Funclet;
490    fn catch_switch(
491        &mut self,
492        parent: Option<Self::Value>,
493        unwind: Option<Self::BasicBlock>,
494        handlers: &[Self::BasicBlock],
495    ) -> Self::Value;
496
497    fn atomic_cmpxchg(
498        &mut self,
499        dst: Self::Value,
500        cmp: Self::Value,
501        src: Self::Value,
502        order: AtomicOrdering,
503        failure_order: AtomicOrdering,
504        weak: bool,
505    ) -> (Self::Value, Self::Value);
506    fn atomic_rmw(
507        &mut self,
508        op: AtomicRmwBinOp,
509        dst: Self::Value,
510        src: Self::Value,
511        order: AtomicOrdering,
512    ) -> Self::Value;
513    fn atomic_fence(&mut self, order: AtomicOrdering, scope: SynchronizationScope);
514    fn set_invariant_load(&mut self, load: Self::Value);
515
516    /// Called for `StorageLive`
517    fn lifetime_start(&mut self, ptr: Self::Value, size: Size);
518
519    /// Called for `StorageDead`
520    fn lifetime_end(&mut self, ptr: Self::Value, size: Size);
521
522    fn call(
523        &mut self,
524        llty: Self::Type,
525        fn_attrs: Option<&CodegenFnAttrs>,
526        fn_abi: Option<&FnAbi<'tcx, Ty<'tcx>>>,
527        llfn: Self::Value,
528        args: &[Self::Value],
529        funclet: Option<&Self::Funclet>,
530        instance: Option<Instance<'tcx>>,
531    ) -> Self::Value;
532    fn zext(&mut self, val: Self::Value, dest_ty: Self::Type) -> Self::Value;
533
534    fn apply_attrs_to_cleanup_callsite(&mut self, llret: Self::Value);
535}
rustc_codegen_ssa/traits/builder.rs

rustc_codegen_ssa/traits/
builder.rs
