1 //! This module is the central place for machine code emission.
2 //! It defines an implementation of wasmparser's Visitor trait
3 //! for `CodeGen`; which defines a visitor per op-code,
4 //! which validates and dispatches to the corresponding
5 //! machine code emitter.
6 
7 use crate::abi::RetArea;
8 use crate::codegen::{
9     Callee, CodeGen, CodeGenError, ConditionalBranch, ControlStackFrame, Emission, FnCall,
10     UnconditionalBranch, control_index,
11 };
12 use crate::masm::{
13     AtomicWaitKind, DivKind, Extend, ExtractLaneKind, FloatCmpKind, IntCmpKind, LoadKind,
14     MacroAssembler, MulWideKind, OperandSize, RegImm, RemKind, ReplaceLaneKind, RmwOp,
15     RoundingMode, SPOffset, ShiftKind, Signed, SplatKind, SplatLoadKind, StoreKind, TruncKind,
16     V128AbsKind, V128AddKind, V128ConvertKind, V128ExtAddKind, V128ExtMulKind, V128ExtendKind,
17     V128LoadExtendKind, V128MaxKind, V128MinKind, V128MulKind, V128NarrowKind, V128NegKind,
18     V128SubKind, V128TruncKind, VectorCompareKind, VectorEqualityKind, Zero,
19 };
20 
21 use crate::reg::{Reg, writable};
22 use crate::stack::{TypedReg, Val};
23 use anyhow::{Result, anyhow, bail, ensure};
24 use regalloc2::RegClass;
25 use smallvec::{SmallVec, smallvec};
26 use wasmparser::{
27     BlockType, BrTable, Ieee32, Ieee64, MemArg, V128, VisitOperator, VisitSimdOperator,
28 };
29 use wasmtime_cranelift::TRAP_INDIRECT_CALL_TO_NULL;
30 use wasmtime_environ::{
31     FUNCREF_INIT_BIT, FuncIndex, GlobalIndex, MemoryIndex, TableIndex, TypeIndex, WasmHeapType,
32     WasmValType,
33 };
34 
35 /// A macro to define unsupported WebAssembly operators.
36 ///
37 /// This macro calls itself recursively;
38 /// 1. It no-ops when matching a supported operator.
39 /// 2. Defines the visitor function and panics when
40 ///    matching an unsupported operator.
41 macro_rules! def_unsupported {
42     ($( @$proposal:ident $op:ident $({ $($arg:ident: $argty:ty),* })? => $visit:ident $ann:tt)*) => {
43         $(
44             def_unsupported!(
45                 emit
46                     $op
47 
48                 fn $visit(&mut self $($(,$arg: $argty)*)?) -> Self::Output {
49                     $($(let _ = $arg;)*)?
50 
51                     Err(anyhow!(CodeGenError::unimplemented_wasm_instruction()))
52                 }
53             );
54         )*
55     };
56 
57     (emit I32Const $($rest:tt)*) => {};
58     (emit I64Const $($rest:tt)*) => {};
59     (emit F32Const $($rest:tt)*) => {};
60     (emit F64Const $($rest:tt)*) => {};
61     (emit V128Const $($rest:tt)*) => {};
62     (emit F32Add $($rest:tt)*) => {};
63     (emit F64Add $($rest:tt)*) => {};
64     (emit F32Sub $($rest:tt)*) => {};
65     (emit F64Sub $($rest:tt)*) => {};
66     (emit F32Mul $($rest:tt)*) => {};
67     (emit F64Mul $($rest:tt)*) => {};
68     (emit F32Div $($rest:tt)*) => {};
69     (emit F64Div $($rest:tt)*) => {};
70     (emit F32Min $($rest:tt)*) => {};
71     (emit F64Min $($rest:tt)*) => {};
72     (emit F32Max $($rest:tt)*) => {};
73     (emit F64Max $($rest:tt)*) => {};
74     (emit F32Copysign $($rest:tt)*) => {};
75     (emit F64Copysign $($rest:tt)*) => {};
76     (emit F32Abs $($rest:tt)*) => {};
77     (emit F64Abs $($rest:tt)*) => {};
78     (emit F32Neg $($rest:tt)*) => {};
79     (emit F64Neg $($rest:tt)*) => {};
80     (emit F32Floor $($rest:tt)*) => {};
81     (emit F64Floor $($rest:tt)*) => {};
82     (emit F32Ceil $($rest:tt)*) => {};
83     (emit F64Ceil $($rest:tt)*) => {};
84     (emit F32Nearest $($rest:tt)*) => {};
85     (emit F64Nearest $($rest:tt)*) => {};
86     (emit F32Trunc $($rest:tt)*) => {};
87     (emit F64Trunc $($rest:tt)*) => {};
88     (emit F32Sqrt $($rest:tt)*) => {};
89     (emit F64Sqrt $($rest:tt)*) => {};
90     (emit F32Eq $($rest:tt)*) => {};
91     (emit F64Eq $($rest:tt)*) => {};
92     (emit F32Ne $($rest:tt)*) => {};
93     (emit F64Ne $($rest:tt)*) => {};
94     (emit F32Lt $($rest:tt)*) => {};
95     (emit F64Lt $($rest:tt)*) => {};
96     (emit F32Gt $($rest:tt)*) => {};
97     (emit F64Gt $($rest:tt)*) => {};
98     (emit F32Le $($rest:tt)*) => {};
99     (emit F64Le $($rest:tt)*) => {};
100     (emit F32Ge $($rest:tt)*) => {};
101     (emit F64Ge $($rest:tt)*) => {};
102     (emit F32ConvertI32S $($rest:tt)*) => {};
103     (emit F32ConvertI32U $($rest:tt)*) => {};
104     (emit F32ConvertI64S $($rest:tt)*) => {};
105     (emit F32ConvertI64U $($rest:tt)*) => {};
106     (emit F64ConvertI32S $($rest:tt)*) => {};
107     (emit F64ConvertI32U $($rest:tt)*) => {};
108     (emit F64ConvertI64S $($rest:tt)*) => {};
109     (emit F64ConvertI64U $($rest:tt)*) => {};
110     (emit F32ReinterpretI32 $($rest:tt)*) => {};
111     (emit F64ReinterpretI64 $($rest:tt)*) => {};
112     (emit F32DemoteF64 $($rest:tt)*) => {};
113     (emit F64PromoteF32 $($rest:tt)*) => {};
114     (emit I32Add $($rest:tt)*) => {};
115     (emit I64Add $($rest:tt)*) => {};
116     (emit I32Sub $($rest:tt)*) => {};
117     (emit I32Mul $($rest:tt)*) => {};
118     (emit I32DivS $($rest:tt)*) => {};
119     (emit I32DivU $($rest:tt)*) => {};
120     (emit I64DivS $($rest:tt)*) => {};
121     (emit I64DivU $($rest:tt)*) => {};
122     (emit I64RemU $($rest:tt)*) => {};
123     (emit I64RemS $($rest:tt)*) => {};
124     (emit I32RemU $($rest:tt)*) => {};
125     (emit I32RemS $($rest:tt)*) => {};
126     (emit I64Mul $($rest:tt)*) => {};
127     (emit I64Sub $($rest:tt)*) => {};
128     (emit I32Eq $($rest:tt)*) => {};
129     (emit I64Eq $($rest:tt)*) => {};
130     (emit I32Ne $($rest:tt)*) => {};
131     (emit I64Ne $($rest:tt)*) => {};
132     (emit I32LtS $($rest:tt)*) => {};
133     (emit I64LtS $($rest:tt)*) => {};
134     (emit I32LtU $($rest:tt)*) => {};
135     (emit I64LtU $($rest:tt)*) => {};
136     (emit I32LeS $($rest:tt)*) => {};
137     (emit I64LeS $($rest:tt)*) => {};
138     (emit I32LeU $($rest:tt)*) => {};
139     (emit I64LeU $($rest:tt)*) => {};
140     (emit I32GtS $($rest:tt)*) => {};
141     (emit I64GtS $($rest:tt)*) => {};
142     (emit I32GtU $($rest:tt)*) => {};
143     (emit I64GtU $($rest:tt)*) => {};
144     (emit I32GeS $($rest:tt)*) => {};
145     (emit I64GeS $($rest:tt)*) => {};
146     (emit I32GeU $($rest:tt)*) => {};
147     (emit I64GeU $($rest:tt)*) => {};
148     (emit I32Eqz $($rest:tt)*) => {};
149     (emit I64Eqz $($rest:tt)*) => {};
150     (emit I32And $($rest:tt)*) => {};
151     (emit I64And $($rest:tt)*) => {};
152     (emit I32Or $($rest:tt)*) => {};
153     (emit I64Or $($rest:tt)*) => {};
154     (emit I32Xor $($rest:tt)*) => {};
155     (emit I64Xor $($rest:tt)*) => {};
156     (emit I32Shl $($rest:tt)*) => {};
157     (emit I64Shl $($rest:tt)*) => {};
158     (emit I32ShrS $($rest:tt)*) => {};
159     (emit I64ShrS $($rest:tt)*) => {};
160     (emit I32ShrU $($rest:tt)*) => {};
161     (emit I64ShrU $($rest:tt)*) => {};
162     (emit I32Rotl $($rest:tt)*) => {};
163     (emit I64Rotl $($rest:tt)*) => {};
164     (emit I32Rotr $($rest:tt)*) => {};
165     (emit I64Rotr $($rest:tt)*) => {};
166     (emit I32Clz $($rest:tt)*) => {};
167     (emit I64Clz $($rest:tt)*) => {};
168     (emit I32Ctz $($rest:tt)*) => {};
169     (emit I64Ctz $($rest:tt)*) => {};
170     (emit I32Popcnt $($rest:tt)*) => {};
171     (emit I64Popcnt $($rest:tt)*) => {};
172     (emit I32WrapI64 $($rest:tt)*) => {};
173     (emit I64ExtendI32S $($rest:tt)*) => {};
174     (emit I64ExtendI32U $($rest:tt)*) => {};
175     (emit I32Extend8S $($rest:tt)*) => {};
176     (emit I32Extend16S $($rest:tt)*) => {};
177     (emit I64Extend8S $($rest:tt)*) => {};
178     (emit I64Extend16S $($rest:tt)*) => {};
179     (emit I64Extend32S $($rest:tt)*) => {};
180     (emit I32TruncF32S $($rest:tt)*) => {};
181     (emit I32TruncF32U $($rest:tt)*) => {};
182     (emit I32TruncF64S $($rest:tt)*) => {};
183     (emit I32TruncF64U $($rest:tt)*) => {};
184     (emit I64TruncF32S $($rest:tt)*) => {};
185     (emit I64TruncF32U $($rest:tt)*) => {};
186     (emit I64TruncF64S $($rest:tt)*) => {};
187     (emit I64TruncF64U $($rest:tt)*) => {};
188     (emit I32ReinterpretF32 $($rest:tt)*) => {};
189     (emit I64ReinterpretF64 $($rest:tt)*) => {};
190     (emit LocalGet $($rest:tt)*) => {};
191     (emit LocalSet $($rest:tt)*) => {};
192     (emit Call $($rest:tt)*) => {};
193     (emit End $($rest:tt)*) => {};
194     (emit Nop $($rest:tt)*) => {};
195     (emit If $($rest:tt)*) => {};
196     (emit Else $($rest:tt)*) => {};
197     (emit Block $($rest:tt)*) => {};
198     (emit Loop $($rest:tt)*) => {};
199     (emit Br $($rest:tt)*) => {};
200     (emit BrIf $($rest:tt)*) => {};
201     (emit Return $($rest:tt)*) => {};
202     (emit Unreachable $($rest:tt)*) => {};
203     (emit LocalTee $($rest:tt)*) => {};
204     (emit GlobalGet $($rest:tt)*) => {};
205     (emit GlobalSet $($rest:tt)*) => {};
206     (emit Select $($rest:tt)*) => {};
207     (emit Drop $($rest:tt)*) => {};
208     (emit BrTable $($rest:tt)*) => {};
209     (emit CallIndirect $($rest:tt)*) => {};
210     (emit TableInit $($rest:tt)*) => {};
211     (emit TableCopy $($rest:tt)*) => {};
212     (emit TableGet $($rest:tt)*) => {};
213     (emit TableSet $($rest:tt)*) => {};
214     (emit TableGrow $($rest:tt)*) => {};
215     (emit TableSize $($rest:tt)*) => {};
216     (emit TableFill $($rest:tt)*) => {};
217     (emit ElemDrop $($rest:tt)*) => {};
218     (emit MemoryInit $($rest:tt)*) => {};
219     (emit MemoryCopy $($rest:tt)*) => {};
220     (emit DataDrop $($rest:tt)*) => {};
221     (emit MemoryFill $($rest:tt)*) => {};
222     (emit MemorySize $($rest:tt)*) => {};
223     (emit MemoryGrow $($rest:tt)*) => {};
224     (emit I32Load $($rest:tt)*) => {};
225     (emit I32Load8S $($rest:tt)*) => {};
226     (emit I32Load8U $($rest:tt)*) => {};
227     (emit I32Load16S $($rest:tt)*) => {};
228     (emit I32Load16U $($rest:tt)*) => {};
229     (emit I64Load8S $($rest:tt)*) => {};
230     (emit I64Load8U $($rest:tt)*) => {};
231     (emit I64Load16S $($rest:tt)*) => {};
232     (emit I64Load16U $($rest:tt)*) => {};
233     (emit I64Load32S $($rest:tt)*) => {};
234     (emit I64Load32U $($rest:tt)*) => {};
235     (emit I64Load $($rest:tt)*) => {};
236     (emit I32Store $($rest:tt)*) => {};
237     (emit I32Store8 $($rest:tt)*) => {};
238     (emit I32Store16 $($rest:tt)*) => {};
239     (emit I64Store $($rest:tt)*) => {};
240     (emit I64Store8 $($rest:tt)*) => {};
241     (emit I64Store16 $($rest:tt)*) => {};
242     (emit I64Store32 $($rest:tt)*) => {};
243     (emit F32Load $($rest:tt)*) => {};
244     (emit F32Store $($rest:tt)*) => {};
245     (emit F64Load $($rest:tt)*) => {};
246     (emit F64Store $($rest:tt)*) => {};
247     (emit I32TruncSatF32S $($rest:tt)*) => {};
248     (emit I32TruncSatF32U $($rest:tt)*) => {};
249     (emit I32TruncSatF64S $($rest:tt)*) => {};
250     (emit I32TruncSatF64U $($rest:tt)*) => {};
251     (emit I64TruncSatF32S $($rest:tt)*) => {};
252     (emit I64TruncSatF32U $($rest:tt)*) => {};
253     (emit I64TruncSatF64S $($rest:tt)*) => {};
254     (emit I64TruncSatF64U $($rest:tt)*) => {};
255     (emit V128Load $($rest:tt)*) => {};
256     (emit V128Store $($rest:tt)*) => {};
257     (emit I64Add128 $($rest:tt)*) => {};
258     (emit I64Sub128 $($rest:tt)*) => {};
259     (emit I64MulWideS $($rest:tt)*) => {};
260     (emit I64MulWideU $($rest:tt)*) => {};
261     (emit I32AtomicLoad8U $($rest:tt)*) => {};
262     (emit I32AtomicLoad16U $($rest:tt)*) => {};
263     (emit I32AtomicLoad $($rest:tt)*) => {};
264     (emit I64AtomicLoad8U $($rest:tt)*) => {};
265     (emit I64AtomicLoad16U $($rest:tt)*) => {};
266     (emit I64AtomicLoad32U $($rest:tt)*) => {};
267     (emit I64AtomicLoad $($rest:tt)*) => {};
268     (emit V128Load8x8S $($rest:tt)*) => {};
269     (emit V128Load8x8U $($rest:tt)*) => {};
270     (emit V128Load16x4S $($rest:tt)*) => {};
271     (emit V128Load16x4U $($rest:tt)*) => {};
272     (emit V128Load32x2S $($rest:tt)*) => {};
273     (emit V128Load32x2U $($rest:tt)*) => {};
274     (emit V128Load8Splat $($rest:tt)*) => {};
275     (emit V128Load16Splat $($rest:tt)*) => {};
276     (emit V128Load32Splat $($rest:tt)*) => {};
277     (emit V128Load64Splat $($rest:tt)*) => {};
278     (emit I8x16Splat $($rest:tt)*) => {};
279     (emit I16x8Splat $($rest:tt)*) => {};
280     (emit I32x4Splat $($rest:tt)*) => {};
281     (emit I64x2Splat $($rest:tt)*) => {};
282     (emit F32x4Splat $($rest:tt)*) => {};
283     (emit F64x2Splat $($rest:tt)*) => {};
284     (emit I32AtomicStore8 $($rest:tt)*) => {};
285     (emit I32AtomicStore16 $($rest:tt)*) => {};
286     (emit I32AtomicStore $($rest:tt)*) => {};
287     (emit I64AtomicStore8 $($rest:tt)*) => {};
288     (emit I64AtomicStore16 $($rest:tt)*) => {};
289     (emit I64AtomicStore32 $($rest:tt)*) => {};
290     (emit I64AtomicStore $($rest:tt)*) => {};
291     (emit I32AtomicRmw8AddU $($rest:tt)*) => {};
292     (emit I32AtomicRmw16AddU $($rest:tt)*) => {};
293     (emit I32AtomicRmwAdd $($rest:tt)*) => {};
294     (emit I64AtomicRmw8AddU $($rest:tt)*) => {};
295     (emit I64AtomicRmw16AddU $($rest:tt)*) => {};
296     (emit I64AtomicRmw32AddU $($rest:tt)*) => {};
297     (emit I64AtomicRmwAdd $($rest:tt)*) => {};
298     (emit I8x16Shuffle $($rest:tt)*) => {};
299     (emit I8x16Swizzle $($rest:tt)*) => {};
300     (emit I32AtomicRmw8SubU $($rest:tt)*) => {};
301     (emit I32AtomicRmw16SubU $($rest:tt)*) => {};
302     (emit I32AtomicRmwSub $($rest:tt)*) => {};
303     (emit I64AtomicRmw8SubU $($rest:tt)*) => {};
304     (emit I64AtomicRmw16SubU $($rest:tt)*) => {};
305     (emit I64AtomicRmw32SubU $($rest:tt)*) => {};
306     (emit I64AtomicRmwSub $($rest:tt)*) => {};
307     (emit I32AtomicRmw8XchgU $($rest:tt)*) => {};
308     (emit I32AtomicRmw16XchgU $($rest:tt)*) => {};
309     (emit I32AtomicRmwXchg $($rest:tt)*) => {};
310     (emit I64AtomicRmw8XchgU $($rest:tt)*) => {};
311     (emit I64AtomicRmw16XchgU $($rest:tt)*) => {};
312     (emit I64AtomicRmw32XchgU $($rest:tt)*) => {};
313     (emit I64AtomicRmwXchg $($rest:tt)*) => {};
314     (emit I8x16ExtractLaneS $($rest:tt)*) => {};
315     (emit I8x16ExtractLaneU $($rest:tt)*) => {};
316     (emit I16x8ExtractLaneS $($rest:tt)*) => {};
317     (emit I16x8ExtractLaneU $($rest:tt)*) => {};
318     (emit I32x4ExtractLane $($rest:tt)*) => {};
319     (emit I64x2ExtractLane $($rest:tt)*) => {};
320     (emit F32x4ExtractLane $($rest:tt)*) => {};
321     (emit F64x2ExtractLane $($rest:tt)*) => {};
322     (emit I32AtomicRmw8AndU $($rest:tt)*) => {};
323     (emit I32AtomicRmw16AndU $($rest:tt)*) => {};
324     (emit I32AtomicRmwAnd $($rest:tt)*) => {};
325     (emit I64AtomicRmw8AndU $($rest:tt)*) => {};
326     (emit I64AtomicRmw16AndU $($rest:tt)*) => {};
327     (emit I64AtomicRmw32AndU $($rest:tt)*) => {};
328     (emit I64AtomicRmwAnd $($rest:tt)*) => {};
329     (emit I32AtomicRmw8OrU $($rest:tt)*) => {};
330     (emit I32AtomicRmw16OrU $($rest:tt)*) => {};
331     (emit I32AtomicRmwOr $($rest:tt)*) => {};
332     (emit I64AtomicRmw8OrU $($rest:tt)*) => {};
333     (emit I64AtomicRmw16OrU $($rest:tt)*) => {};
334     (emit I64AtomicRmw32OrU $($rest:tt)*) => {};
335     (emit I64AtomicRmwOr $($rest:tt)*) => {};
336     (emit I32AtomicRmw8XorU $($rest:tt)*) => {};
337     (emit I32AtomicRmw16XorU $($rest:tt)*) => {};
338     (emit I32AtomicRmwXor $($rest:tt)*) => {};
339     (emit I64AtomicRmw8XorU $($rest:tt)*) => {};
340     (emit I64AtomicRmw16XorU $($rest:tt)*) => {};
341     (emit I64AtomicRmw32XorU $($rest:tt)*) => {};
342     (emit I64AtomicRmwXor $($rest:tt)*) => {};
343     (emit I8x16ReplaceLane $($rest:tt)*) => {};
344     (emit I16x8ReplaceLane $($rest:tt)*) => {};
345     (emit I32x4ReplaceLane $($rest:tt)*) => {};
346     (emit I64x2ReplaceLane $($rest:tt)*) => {};
347     (emit F32x4ReplaceLane $($rest:tt)*) => {};
348     (emit F64x2ReplaceLane $($rest:tt)*) => {};
349     (emit I32AtomicRmw8CmpxchgU $($rest:tt)*) => {};
350     (emit I32AtomicRmw16CmpxchgU $($rest:tt)*) => {};
351     (emit I32AtomicRmwCmpxchg $($rest:tt)*) => {};
352     (emit I64AtomicRmw8CmpxchgU $($rest:tt)*) => {};
353     (emit I64AtomicRmw16CmpxchgU $($rest:tt)*) => {};
354     (emit I64AtomicRmw32CmpxchgU $($rest:tt)*) => {};
355     (emit I64AtomicRmwCmpxchg $($rest:tt)*) => {};
356     (emit I8x16Eq $($rest:tt)*) => {};
357     (emit I16x8Eq $($rest:tt)*) => {};
358     (emit I32x4Eq $($rest:tt)*) => {};
359     (emit I64x2Eq $($rest:tt)*) => {};
360     (emit F32x4Eq $($rest:tt)*) => {};
361     (emit F64x2Eq $($rest:tt)*) => {};
362     (emit I8x16Ne $($rest:tt)*) => {};
363     (emit I16x8Ne $($rest:tt)*) => {};
364     (emit I32x4Ne $($rest:tt)*) => {};
365     (emit I64x2Ne $($rest:tt)*) => {};
366     (emit F32x4Ne $($rest:tt)*) => {};
367     (emit F64x2Ne $($rest:tt)*) => {};
368     (emit I8x16LtS $($rest:tt)*) => {};
369     (emit I8x16LtU $($rest:tt)*) => {};
370     (emit I16x8LtS $($rest:tt)*) => {};
371     (emit I16x8LtU $($rest:tt)*) => {};
372     (emit I32x4LtS $($rest:tt)*) => {};
373     (emit I32x4LtU $($rest:tt)*) => {};
374     (emit I64x2LtS $($rest:tt)*) => {};
375     (emit F32x4Lt $($rest:tt)*) => {};
376     (emit F64x2Lt $($rest:tt)*) => {};
377     (emit I8x16LeS $($rest:tt)*) => {};
378     (emit I8x16LeU $($rest:tt)*) => {};
379     (emit I16x8LeS $($rest:tt)*) => {};
380     (emit I16x8LeU $($rest:tt)*) => {};
381     (emit I32x4LeS $($rest:tt)*) => {};
382     (emit I32x4LeU $($rest:tt)*) => {};
383     (emit I64x2LeS $($rest:tt)*) => {};
384     (emit F32x4Le $($rest:tt)*) => {};
385     (emit F64x2Le $($rest:tt)*) => {};
386     (emit I8x16GtS $($rest:tt)*) => {};
387     (emit I8x16GtU $($rest:tt)*) => {};
388     (emit I16x8GtS $($rest:tt)*) => {};
389     (emit I16x8GtU $($rest:tt)*) => {};
390     (emit I32x4GtS $($rest:tt)*) => {};
391     (emit I32x4GtU $($rest:tt)*) => {};
392     (emit I64x2GtS $($rest:tt)*) => {};
393     (emit F32x4Gt $($rest:tt)*) => {};
394     (emit F64x2Gt $($rest:tt)*) => {};
395     (emit I8x16GeS $($rest:tt)*) => {};
396     (emit I8x16GeU $($rest:tt)*) => {};
397     (emit I16x8GeS $($rest:tt)*) => {};
398     (emit I16x8GeU $($rest:tt)*) => {};
399     (emit I32x4GeS $($rest:tt)*) => {};
400     (emit I32x4GeU $($rest:tt)*) => {};
401     (emit I64x2GeS $($rest:tt)*) => {};
402     (emit F32x4Ge $($rest:tt)*) => {};
403     (emit F64x2Ge $($rest:tt)*) => {};
404     (emit MemoryAtomicWait32 $($rest:tt)*) => {};
405     (emit MemoryAtomicWait64 $($rest:tt)*) => {};
406     (emit MemoryAtomicNotify $($rest:tt)*) => {};
407     (emit AtomicFence $($rest:tt)*) => {};
408     (emit V128Not $($rest:tt)*) => {};
409     (emit V128And $($rest:tt)*) => {};
410     (emit V128AndNot $($rest:tt)*) => {};
411     (emit V128Or $($rest:tt)*) => {};
412     (emit V128Xor $($rest:tt)*) => {};
413     (emit V128Bitselect $($rest:tt)*) => {};
414     (emit V128AnyTrue $($rest:tt)*) => {};
415     (emit V128Load8Lane $($rest:tt)*) => {};
416     (emit V128Load16Lane $($rest:tt)*) => {};
417     (emit V128Load32Lane $($rest:tt)*) => {};
418     (emit V128Load64Lane $($rest:tt)*) => {};
419     (emit V128Store8Lane $($rest:tt)*) => {};
420     (emit V128Store16Lane $($rest:tt)*) => {};
421     (emit V128Store32Lane $($rest:tt)*) => {};
422     (emit V128Store64Lane $($rest:tt)*) => {};
423     (emit F32x4ConvertI32x4S $($rest:tt)*) => {};
424     (emit F32x4ConvertI32x4U $($rest:tt)*) => {};
425     (emit F64x2ConvertLowI32x4S $($rest:tt)*) => {};
426     (emit F64x2ConvertLowI32x4U $($rest:tt)*) => {};
427     (emit I8x16NarrowI16x8S $($rest:tt)*) => {};
428     (emit I8x16NarrowI16x8U $($rest:tt)*) => {};
429     (emit I16x8NarrowI32x4S $($rest:tt)*) => {};
430     (emit I16x8NarrowI32x4U $($rest:tt)*) => {};
431     (emit F32x4DemoteF64x2Zero $($rest:tt)*) => {};
432     (emit F64x2PromoteLowF32x4 $($rest:tt)*) => {};
433     (emit I16x8ExtendLowI8x16S $($rest:tt)*) => {};
434     (emit I16x8ExtendHighI8x16S $($rest:tt)*) => {};
435     (emit I16x8ExtendLowI8x16U $($rest:tt)*) => {};
436     (emit I16x8ExtendHighI8x16U $($rest:tt)*) => {};
437     (emit I32x4ExtendLowI16x8S $($rest:tt)*) => {};
438     (emit I32x4ExtendHighI16x8S $($rest:tt)*) => {};
439     (emit I32x4ExtendLowI16x8U $($rest:tt)*) => {};
440     (emit I32x4ExtendHighI16x8U $($rest:tt)*) => {};
441     (emit I64x2ExtendLowI32x4S $($rest:tt)*) => {};
442     (emit I64x2ExtendHighI32x4S $($rest:tt)*) => {};
443     (emit I64x2ExtendLowI32x4U $($rest:tt)*) => {};
444     (emit I64x2ExtendHighI32x4U $($rest:tt)*) => {};
445     (emit I8x16Add $($rest:tt)*) => {};
446     (emit I16x8Add $($rest:tt)*) => {};
447     (emit I32x4Add $($rest:tt)*) => {};
448     (emit I64x2Add $($rest:tt)*) => {};
449     (emit I8x16Sub $($rest:tt)*) => {};
450     (emit I16x8Sub $($rest:tt)*) => {};
451     (emit I32x4Sub $($rest:tt)*) => {};
452     (emit I64x2Sub $($rest:tt)*) => {};
453     (emit I16x8Mul $($rest:tt)*) => {};
454     (emit I32x4Mul $($rest:tt)*) => {};
455     (emit I64x2Mul $($rest:tt)*) => {};
456     (emit I8x16AddSatS $($rest:tt)*) => {};
457     (emit I16x8AddSatS $($rest:tt)*) => {};
458     (emit I8x16AddSatU $($rest:tt)*) => {};
459     (emit I16x8AddSatU $($rest:tt)*) => {};
460     (emit I8x16SubSatS $($rest:tt)*) => {};
461     (emit I16x8SubSatS $($rest:tt)*) => {};
462     (emit I8x16SubSatU $($rest:tt)*) => {};
463     (emit I16x8SubSatU $($rest:tt)*) => {};
464     (emit I8x16Abs $($rest:tt)*) => {};
465     (emit I16x8Abs $($rest:tt)*) => {};
466     (emit I32x4Abs $($rest:tt)*) => {};
467     (emit I64x2Abs $($rest:tt)*) => {};
468     (emit F32x4Abs $($rest:tt)*) => {};
469     (emit F64x2Abs $($rest:tt)*) => {};
470     (emit I8x16Neg $($rest:tt)*) => {};
471     (emit I16x8Neg $($rest:tt)*) => {};
472     (emit I32x4Neg $($rest:tt)*) => {};
473     (emit I64x2Neg $($rest:tt)*) => {};
474     (emit I8x16Shl $($rest:tt)*) => {};
475     (emit I16x8Shl $($rest:tt)*) => {};
476     (emit I32x4Shl $($rest:tt)*) => {};
477     (emit I64x2Shl $($rest:tt)*) => {};
478     (emit I8x16ShrU $($rest:tt)*) => {};
479     (emit I16x8ShrU $($rest:tt)*) => {};
480     (emit I32x4ShrU $($rest:tt)*) => {};
481     (emit I64x2ShrU $($rest:tt)*) => {};
482     (emit I8x16ShrS $($rest:tt)*) => {};
483     (emit I16x8ShrS $($rest:tt)*) => {};
484     (emit I32x4ShrS $($rest:tt)*) => {};
485     (emit I64x2ShrS $($rest:tt)*) => {};
486     (emit I16x8Q15MulrSatS $($rest:tt)*) => {};
487     (emit I8x16AllTrue $($rest:tt)*) => {};
488     (emit I16x8AllTrue $($rest:tt)*) => {};
489     (emit I32x4AllTrue $($rest:tt)*) => {};
490     (emit I64x2AllTrue $($rest:tt)*) => {};
491     (emit I8x16Bitmask $($rest:tt)*) => {};
492     (emit I16x8Bitmask $($rest:tt)*) => {};
493     (emit I32x4Bitmask $($rest:tt)*) => {};
494     (emit I64x2Bitmask $($rest:tt)*) => {};
495     (emit I32x4TruncSatF32x4S $($rest:tt)*) => {};
496     (emit I32x4TruncSatF32x4U $($rest:tt)*) => {};
497     (emit I32x4TruncSatF64x2SZero $($rest:tt)*) => {};
498     (emit I32x4TruncSatF64x2UZero $($rest:tt)*) => {};
499     (emit I8x16MinU $($rest:tt)*) => {};
500     (emit I16x8MinU $($rest:tt)*) => {};
501     (emit I32x4MinU $($rest:tt)*) => {};
502     (emit I8x16MinS $($rest:tt)*) => {};
503     (emit I16x8MinS $($rest:tt)*) => {};
504     (emit I32x4MinS $($rest:tt)*) => {};
505     (emit I8x16MaxU $($rest:tt)*) => {};
506     (emit I16x8MaxU $($rest:tt)*) => {};
507     (emit I32x4MaxU $($rest:tt)*) => {};
508     (emit I8x16MaxS $($rest:tt)*) => {};
509     (emit I16x8MaxS $($rest:tt)*) => {};
510     (emit I32x4MaxS $($rest:tt)*) => {};
511     (emit I16x8ExtMulLowI8x16S $($rest:tt)*) => {};
512     (emit I32x4ExtMulLowI16x8S $($rest:tt)*) => {};
513     (emit I64x2ExtMulLowI32x4S $($rest:tt)*) => {};
514     (emit I16x8ExtMulHighI8x16S $($rest:tt)*) => {};
515     (emit I32x4ExtMulHighI16x8S $($rest:tt)*) => {};
516     (emit I64x2ExtMulHighI32x4S $($rest:tt)*) => {};
517     (emit I16x8ExtMulLowI8x16U $($rest:tt)*) => {};
518     (emit I32x4ExtMulLowI16x8U $($rest:tt)*) => {};
519     (emit I64x2ExtMulLowI32x4U $($rest:tt)*) => {};
520     (emit I16x8ExtMulHighI8x16U $($rest:tt)*) => {};
521     (emit I32x4ExtMulHighI16x8U $($rest:tt)*) => {};
522     (emit I64x2ExtMulHighI32x4U $($rest:tt)*) => {};
523     (emit I16x8ExtAddPairwiseI8x16U $($rest:tt)*) => {};
524     (emit I16x8ExtAddPairwiseI8x16S $($rest:tt)*) => {};
525     (emit I32x4ExtAddPairwiseI16x8U $($rest:tt)*) => {};
526     (emit I32x4ExtAddPairwiseI16x8S $($rest:tt)*) => {};
527     (emit I32x4DotI16x8S $($rest:tt)*) => {};
528     (emit I8x16Popcnt $($rest:tt)*) => {};
529     (emit I8x16AvgrU $($rest:tt)*) => {};
530     (emit I16x8AvgrU $($rest:tt)*) => {};
531     (emit F32x4Add $($rest:tt)*) => {};
532     (emit F64x2Add $($rest:tt)*) => {};
533     (emit F32x4Sub $($rest:tt)*) => {};
534     (emit F64x2Sub $($rest:tt)*) => {};
535     (emit F32x4Mul $($rest:tt)*) => {};
536     (emit F64x2Mul $($rest:tt)*) => {};
537     (emit F32x4Div $($rest:tt)*) => {};
538     (emit F64x2Div $($rest:tt)*) => {};
539     (emit F32x4Neg $($rest:tt)*) => {};
540     (emit F64x2Neg $($rest:tt)*) => {};
541     (emit F32x4Sqrt $($rest:tt)*) => {};
542     (emit F64x2Sqrt $($rest:tt)*) => {};
543     (emit F32x4Ceil $($rest:tt)*) => {};
544     (emit F64x2Ceil $($rest:tt)*) => {};
545     (emit F32x4Floor $($rest:tt)*) => {};
546     (emit F64x2Floor $($rest:tt)*) => {};
547     (emit F32x4Nearest $($rest:tt)*) => {};
548     (emit F64x2Nearest $($rest:tt)*) => {};
549     (emit F32x4Trunc $($rest:tt)*) => {};
550     (emit F64x2Trunc $($rest:tt)*) => {};
551     (emit V128Load32Zero $($rest:tt)*) => {};
552     (emit V128Load64Zero $($rest:tt)*) => {};
553     (emit F32x4PMin $($rest:tt)*) => {};
554     (emit F64x2PMin $($rest:tt)*) => {};
555     (emit F32x4PMax $($rest:tt)*) => {};
556     (emit F64x2PMax $($rest:tt)*) => {};
557     (emit F32x4Min $($rest:tt)*) => {};
558     (emit F64x2Min $($rest:tt)*) => {};
559     (emit F32x4Max $($rest:tt)*) => {};
560     (emit F64x2Max $($rest:tt)*) => {};
561 
562     (emit $unsupported:tt $($rest:tt)*) => {$($rest)*};
563 }
564 
565 impl<'a, 'translation, 'data, M> VisitOperator<'a> for CodeGen<'a, 'translation, 'data, M, Emission>
566 where
567     M: MacroAssembler,
568 {
569     type Output = Result<()>;
570 
571     fn visit_i32_const(&mut self, val: i32) -> Self::Output {
572         self.context.stack.push(Val::i32(val));
573 
574         Ok(())
575     }
576 
577     fn visit_i64_const(&mut self, val: i64) -> Self::Output {
578         self.context.stack.push(Val::i64(val));
579         Ok(())
580     }
581 
582     fn visit_f32_const(&mut self, val: Ieee32) -> Self::Output {
583         self.context.stack.push(Val::f32(val));
584         Ok(())
585     }
586 
587     fn visit_f64_const(&mut self, val: Ieee64) -> Self::Output {
588         self.context.stack.push(Val::f64(val));
589         Ok(())
590     }
591 
592     fn visit_f32_add(&mut self) -> Self::Output {
593         self.context.binop(
594             self.masm,
595             OperandSize::S32,
596             &mut |masm: &mut M, dst, src, size| {
597                 masm.float_add(writable!(dst), dst, src, size)?;
598                 Ok(TypedReg::f32(dst))
599             },
600         )
601     }
602 
603     fn visit_f64_add(&mut self) -> Self::Output {
604         self.context.binop(
605             self.masm,
606             OperandSize::S64,
607             &mut |masm: &mut M, dst, src, size| {
608                 masm.float_add(writable!(dst), dst, src, size)?;
609                 Ok(TypedReg::f64(dst))
610             },
611         )
612     }
613 
614     fn visit_f32_sub(&mut self) -> Self::Output {
615         self.context.binop(
616             self.masm,
617             OperandSize::S32,
618             &mut |masm: &mut M, dst, src, size| {
619                 masm.float_sub(writable!(dst), dst, src, size)?;
620                 Ok(TypedReg::f32(dst))
621             },
622         )
623     }
624 
625     fn visit_f64_sub(&mut self) -> Self::Output {
626         self.context.binop(
627             self.masm,
628             OperandSize::S64,
629             &mut |masm: &mut M, dst, src, size| {
630                 masm.float_sub(writable!(dst), dst, src, size)?;
631                 Ok(TypedReg::f64(dst))
632             },
633         )
634     }
635 
636     fn visit_f32_mul(&mut self) -> Self::Output {
637         self.context.binop(
638             self.masm,
639             OperandSize::S32,
640             &mut |masm: &mut M, dst, src, size| {
641                 masm.float_mul(writable!(dst), dst, src, size)?;
642                 Ok(TypedReg::f32(dst))
643             },
644         )
645     }
646 
647     fn visit_f64_mul(&mut self) -> Self::Output {
648         self.context.binop(
649             self.masm,
650             OperandSize::S64,
651             &mut |masm: &mut M, dst, src, size| {
652                 masm.float_mul(writable!(dst), dst, src, size)?;
653                 Ok(TypedReg::f64(dst))
654             },
655         )
656     }
657 
658     fn visit_f32_div(&mut self) -> Self::Output {
659         self.context.binop(
660             self.masm,
661             OperandSize::S32,
662             &mut |masm: &mut M, dst, src, size| {
663                 masm.float_div(writable!(dst), dst, src, size)?;
664                 Ok(TypedReg::f32(dst))
665             },
666         )
667     }
668 
669     fn visit_f64_div(&mut self) -> Self::Output {
670         self.context.binop(
671             self.masm,
672             OperandSize::S64,
673             &mut |masm: &mut M, dst, src, size| {
674                 masm.float_div(writable!(dst), dst, src, size)?;
675                 Ok(TypedReg::f64(dst))
676             },
677         )
678     }
679 
680     fn visit_f32_min(&mut self) -> Self::Output {
681         self.context.binop(
682             self.masm,
683             OperandSize::S32,
684             &mut |masm: &mut M, dst, src, size| {
685                 masm.float_min(writable!(dst), dst, src, size)?;
686                 Ok(TypedReg::f32(dst))
687             },
688         )
689     }
690 
691     fn visit_f64_min(&mut self) -> Self::Output {
692         self.context.binop(
693             self.masm,
694             OperandSize::S64,
695             &mut |masm: &mut M, dst, src, size| {
696                 masm.float_min(writable!(dst), dst, src, size)?;
697                 Ok(TypedReg::f64(dst))
698             },
699         )
700     }
701 
702     fn visit_f32_max(&mut self) -> Self::Output {
703         self.context.binop(
704             self.masm,
705             OperandSize::S32,
706             &mut |masm: &mut M, dst, src, size| {
707                 masm.float_max(writable!(dst), dst, src, size)?;
708                 Ok(TypedReg::f32(dst))
709             },
710         )
711     }
712 
713     fn visit_f64_max(&mut self) -> Self::Output {
714         self.context.binop(
715             self.masm,
716             OperandSize::S64,
717             &mut |masm: &mut M, dst, src, size| {
718                 masm.float_max(writable!(dst), dst, src, size)?;
719                 Ok(TypedReg::f64(dst))
720             },
721         )
722     }
723 
724     fn visit_f32_copysign(&mut self) -> Self::Output {
725         self.context.binop(
726             self.masm,
727             OperandSize::S32,
728             &mut |masm: &mut M, dst, src, size| {
729                 masm.float_copysign(writable!(dst), dst, src, size)?;
730                 Ok(TypedReg::f32(dst))
731             },
732         )
733     }
734 
735     fn visit_f64_copysign(&mut self) -> Self::Output {
736         self.context.binop(
737             self.masm,
738             OperandSize::S64,
739             &mut |masm: &mut M, dst, src, size| {
740                 masm.float_copysign(writable!(dst), dst, src, size)?;
741                 Ok(TypedReg::f64(dst))
742             },
743         )
744     }
745 
746     fn visit_f32_abs(&mut self) -> Self::Output {
747         self.context.unop(self.masm, |masm, reg| {
748             masm.float_abs(writable!(reg), OperandSize::S32)?;
749             Ok(TypedReg::f32(reg))
750         })
751     }
752 
753     fn visit_f64_abs(&mut self) -> Self::Output {
754         self.context.unop(self.masm, |masm, reg| {
755             masm.float_abs(writable!(reg), OperandSize::S64)?;
756             Ok(TypedReg::f64(reg))
757         })
758     }
759 
760     fn visit_f32_neg(&mut self) -> Self::Output {
761         self.context.unop(self.masm, |masm, reg| {
762             masm.float_neg(writable!(reg), OperandSize::S32)?;
763             Ok(TypedReg::f32(reg))
764         })
765     }
766 
767     fn visit_f64_neg(&mut self) -> Self::Output {
768         self.context.unop(self.masm, |masm, reg| {
769             masm.float_neg(writable!(reg), OperandSize::S64)?;
770             Ok(TypedReg::f64(reg))
771         })
772     }
773 
774     fn visit_f32_floor(&mut self) -> Self::Output {
775         self.masm.float_round(
776             RoundingMode::Down,
777             &mut self.env,
778             &mut self.context,
779             OperandSize::S32,
780             |env, cx, masm| {
781                 let builtin = env.builtins.floor_f32::<M::ABI, M::Ptr>()?;
782                 FnCall::emit::<M>(env, masm, cx, Callee::Builtin(builtin))
783             },
784         )
785     }
786 
787     fn visit_f64_floor(&mut self) -> Self::Output {
788         self.masm.float_round(
789             RoundingMode::Down,
790             &mut self.env,
791             &mut self.context,
792             OperandSize::S64,
793             |env, cx, masm| {
794                 let builtin = env.builtins.floor_f64::<M::ABI, M::Ptr>()?;
795                 FnCall::emit::<M>(env, masm, cx, Callee::Builtin(builtin))
796             },
797         )
798     }
799 
800     fn visit_f32_ceil(&mut self) -> Self::Output {
801         self.masm.float_round(
802             RoundingMode::Up,
803             &mut self.env,
804             &mut self.context,
805             OperandSize::S32,
806             |env, cx, masm| {
807                 let builtin = env.builtins.ceil_f32::<M::ABI, M::Ptr>()?;
808                 FnCall::emit::<M>(env, masm, cx, Callee::Builtin(builtin))
809             },
810         )
811     }
812 
813     fn visit_f64_ceil(&mut self) -> Self::Output {
814         self.masm.float_round(
815             RoundingMode::Up,
816             &mut self.env,
817             &mut self.context,
818             OperandSize::S64,
819             |env, cx, masm| {
820                 let builtin = env.builtins.ceil_f64::<M::ABI, M::Ptr>()?;
821                 FnCall::emit::<M>(env, masm, cx, Callee::Builtin(builtin))
822             },
823         )
824     }
825 
826     fn visit_f32_nearest(&mut self) -> Self::Output {
827         self.masm.float_round(
828             RoundingMode::Nearest,
829             &mut self.env,
830             &mut self.context,
831             OperandSize::S32,
832             |env, cx, masm| {
833                 let builtin = env.builtins.nearest_f32::<M::ABI, M::Ptr>()?;
834                 FnCall::emit::<M>(env, masm, cx, Callee::Builtin(builtin))
835             },
836         )
837     }
838 
839     fn visit_f64_nearest(&mut self) -> Self::Output {
840         self.masm.float_round(
841             RoundingMode::Nearest,
842             &mut self.env,
843             &mut self.context,
844             OperandSize::S64,
845             |env, cx, masm| {
846                 let builtin = env.builtins.nearest_f64::<M::ABI, M::Ptr>()?;
847                 FnCall::emit::<M>(env, masm, cx, Callee::Builtin(builtin))
848             },
849         )
850     }
851 
852     fn visit_f32_trunc(&mut self) -> Self::Output {
853         self.masm.float_round(
854             RoundingMode::Zero,
855             &mut self.env,
856             &mut self.context,
857             OperandSize::S32,
858             |env, cx, masm| {
859                 let builtin = env.builtins.trunc_f32::<M::ABI, M::Ptr>()?;
860                 FnCall::emit::<M>(env, masm, cx, Callee::Builtin(builtin))
861             },
862         )
863     }
864 
865     fn visit_f64_trunc(&mut self) -> Self::Output {
866         self.masm.float_round(
867             RoundingMode::Zero,
868             &mut self.env,
869             &mut self.context,
870             OperandSize::S64,
871             |env, cx, masm| {
872                 let builtin = env.builtins.trunc_f64::<M::ABI, M::Ptr>()?;
873                 FnCall::emit::<M>(env, masm, cx, Callee::Builtin(builtin))
874             },
875         )
876     }
877 
878     fn visit_f32_sqrt(&mut self) -> Self::Output {
879         self.context.unop(self.masm, |masm, reg| {
880             masm.float_sqrt(writable!(reg), reg, OperandSize::S32)?;
881             Ok(TypedReg::f32(reg))
882         })
883     }
884 
885     fn visit_f64_sqrt(&mut self) -> Self::Output {
886         self.context.unop(self.masm, |masm, reg| {
887             masm.float_sqrt(writable!(reg), reg, OperandSize::S64)?;
888             Ok(TypedReg::f64(reg))
889         })
890     }
891 
892     fn visit_f32_eq(&mut self) -> Self::Output {
893         self.context.float_cmp_op(
894             self.masm,
895             OperandSize::S32,
896             &mut |masm: &mut M, dst, src1, src2, size| {
897                 masm.float_cmp_with_set(writable!(dst), src1, src2, FloatCmpKind::Eq, size)
898             },
899         )
900     }
901 
902     fn visit_f64_eq(&mut self) -> Self::Output {
903         self.context.float_cmp_op(
904             self.masm,
905             OperandSize::S64,
906             &mut |masm: &mut M, dst, src1, src2, size| {
907                 masm.float_cmp_with_set(writable!(dst), src1, src2, FloatCmpKind::Eq, size)
908             },
909         )
910     }
911 
912     fn visit_f32_ne(&mut self) -> Self::Output {
913         self.context.float_cmp_op(
914             self.masm,
915             OperandSize::S32,
916             &mut |masm: &mut M, dst, src1, src2, size| {
917                 masm.float_cmp_with_set(writable!(dst), src1, src2, FloatCmpKind::Ne, size)
918             },
919         )
920     }
921 
922     fn visit_f64_ne(&mut self) -> Self::Output {
923         self.context.float_cmp_op(
924             self.masm,
925             OperandSize::S64,
926             &mut |masm: &mut M, dst, src1, src2, size| {
927                 masm.float_cmp_with_set(writable!(dst), src1, src2, FloatCmpKind::Ne, size)
928             },
929         )
930     }
931 
932     fn visit_f32_lt(&mut self) -> Self::Output {
933         self.context.float_cmp_op(
934             self.masm,
935             OperandSize::S32,
936             &mut |masm: &mut M, dst, src1, src2, size| {
937                 masm.float_cmp_with_set(writable!(dst), src1, src2, FloatCmpKind::Lt, size)
938             },
939         )
940     }
941 
942     fn visit_f64_lt(&mut self) -> Self::Output {
943         self.context.float_cmp_op(
944             self.masm,
945             OperandSize::S64,
946             &mut |masm: &mut M, dst, src1, src2, size| {
947                 masm.float_cmp_with_set(writable!(dst), src1, src2, FloatCmpKind::Lt, size)
948             },
949         )
950     }
951 
952     fn visit_f32_gt(&mut self) -> Self::Output {
953         self.context.float_cmp_op(
954             self.masm,
955             OperandSize::S32,
956             &mut |masm: &mut M, dst, src1, src2, size| {
957                 masm.float_cmp_with_set(writable!(dst), src1, src2, FloatCmpKind::Gt, size)
958             },
959         )
960     }
961 
962     fn visit_f64_gt(&mut self) -> Self::Output {
963         self.context.float_cmp_op(
964             self.masm,
965             OperandSize::S64,
966             &mut |masm: &mut M, dst, src1, src2, size| {
967                 masm.float_cmp_with_set(writable!(dst), src1, src2, FloatCmpKind::Gt, size)
968             },
969         )
970     }
971 
972     fn visit_f32_le(&mut self) -> Self::Output {
973         self.context.float_cmp_op(
974             self.masm,
975             OperandSize::S32,
976             &mut |masm: &mut M, dst, src1, src2, size| {
977                 masm.float_cmp_with_set(writable!(dst), src1, src2, FloatCmpKind::Le, size)
978             },
979         )
980     }
981 
982     fn visit_f64_le(&mut self) -> Self::Output {
983         self.context.float_cmp_op(
984             self.masm,
985             OperandSize::S64,
986             &mut |masm: &mut M, dst, src1, src2, size| {
987                 masm.float_cmp_with_set(writable!(dst), src1, src2, FloatCmpKind::Le, size)
988             },
989         )
990     }
991 
992     fn visit_f32_ge(&mut self) -> Self::Output {
993         self.context.float_cmp_op(
994             self.masm,
995             OperandSize::S32,
996             &mut |masm: &mut M, dst, src1, src2, size| {
997                 masm.float_cmp_with_set(writable!(dst), src1, src2, FloatCmpKind::Ge, size)
998             },
999         )
1000     }
1001 
1002     fn visit_f64_ge(&mut self) -> Self::Output {
1003         self.context.float_cmp_op(
1004             self.masm,
1005             OperandSize::S64,
1006             &mut |masm: &mut M, dst, src1, src2, size| {
1007                 masm.float_cmp_with_set(writable!(dst), src1, src2, FloatCmpKind::Ge, size)
1008             },
1009         )
1010     }
1011 
1012     fn visit_f32_convert_i32_s(&mut self) -> Self::Output {
1013         self.context
1014             .convert_op(self.masm, WasmValType::F32, |masm, dst, src, dst_size| {
1015                 masm.signed_convert(writable!(dst), src, OperandSize::S32, dst_size)
1016             })
1017     }
1018 
1019     fn visit_f32_convert_i32_u(&mut self) -> Self::Output {
1020         self.context.convert_op_with_tmp_reg(
1021             self.masm,
1022             WasmValType::F32,
1023             RegClass::Int,
1024             |masm, dst, src, tmp_gpr, dst_size| {
1025                 masm.unsigned_convert(writable!(dst), src, tmp_gpr, OperandSize::S32, dst_size)
1026             },
1027         )
1028     }
1029 
1030     fn visit_f32_convert_i64_s(&mut self) -> Self::Output {
1031         self.context
1032             .convert_op(self.masm, WasmValType::F32, |masm, dst, src, dst_size| {
1033                 masm.signed_convert(writable!(dst), src, OperandSize::S64, dst_size)
1034             })
1035     }
1036 
1037     fn visit_f32_convert_i64_u(&mut self) -> Self::Output {
1038         self.context.convert_op_with_tmp_reg(
1039             self.masm,
1040             WasmValType::F32,
1041             RegClass::Int,
1042             |masm, dst, src, tmp_gpr, dst_size| {
1043                 masm.unsigned_convert(writable!(dst), src, tmp_gpr, OperandSize::S64, dst_size)
1044             },
1045         )
1046     }
1047 
1048     fn visit_f64_convert_i32_s(&mut self) -> Self::Output {
1049         self.context
1050             .convert_op(self.masm, WasmValType::F64, |masm, dst, src, dst_size| {
1051                 masm.signed_convert(writable!(dst), src, OperandSize::S32, dst_size)
1052             })
1053     }
1054 
1055     fn visit_f64_convert_i32_u(&mut self) -> Self::Output {
1056         self.context.convert_op_with_tmp_reg(
1057             self.masm,
1058             WasmValType::F64,
1059             RegClass::Int,
1060             |masm, dst, src, tmp_gpr, dst_size| {
1061                 masm.unsigned_convert(writable!(dst), src, tmp_gpr, OperandSize::S32, dst_size)
1062             },
1063         )
1064     }
1065 
1066     fn visit_f64_convert_i64_s(&mut self) -> Self::Output {
1067         self.context
1068             .convert_op(self.masm, WasmValType::F64, |masm, dst, src, dst_size| {
1069                 masm.signed_convert(writable!(dst), src, OperandSize::S64, dst_size)
1070             })
1071     }
1072 
1073     fn visit_f64_convert_i64_u(&mut self) -> Self::Output {
1074         self.context.convert_op_with_tmp_reg(
1075             self.masm,
1076             WasmValType::F64,
1077             RegClass::Int,
1078             |masm, dst, src, tmp_gpr, dst_size| {
1079                 masm.unsigned_convert(writable!(dst), src, tmp_gpr, OperandSize::S64, dst_size)
1080             },
1081         )
1082     }
1083 
1084     fn visit_f32_reinterpret_i32(&mut self) -> Self::Output {
1085         self.context
1086             .convert_op(self.masm, WasmValType::F32, |masm, dst, src, size| {
1087                 masm.reinterpret_int_as_float(writable!(dst), src, size)
1088             })
1089     }
1090 
1091     fn visit_f64_reinterpret_i64(&mut self) -> Self::Output {
1092         self.context
1093             .convert_op(self.masm, WasmValType::F64, |masm, dst, src, size| {
1094                 masm.reinterpret_int_as_float(writable!(dst), src, size)
1095             })
1096     }
1097 
1098     fn visit_f32_demote_f64(&mut self) -> Self::Output {
1099         self.context.unop(self.masm, |masm, reg| {
1100             masm.demote(writable!(reg), reg)?;
1101             Ok(TypedReg::f32(reg))
1102         })
1103     }
1104 
1105     fn visit_f64_promote_f32(&mut self) -> Self::Output {
1106         self.context.unop(self.masm, |masm, reg| {
1107             masm.promote(writable!(reg), reg)?;
1108             Ok(TypedReg::f64(reg))
1109         })
1110     }
1111 
1112     fn visit_i32_add(&mut self) -> Self::Output {
1113         self.context.i32_binop(self.masm, |masm, dst, src, size| {
1114             masm.add(writable!(dst), dst, src, size)?;
1115             Ok(TypedReg::i32(dst))
1116         })
1117     }
1118 
1119     fn visit_i64_add(&mut self) -> Self::Output {
1120         self.context.i64_binop(self.masm, |masm, dst, src, size| {
1121             masm.add(writable!(dst), dst, src, size)?;
1122             Ok(TypedReg::i64(dst))
1123         })
1124     }
1125 
1126     fn visit_i32_sub(&mut self) -> Self::Output {
1127         self.context.i32_binop(self.masm, |masm, dst, src, size| {
1128             masm.sub(writable!(dst), dst, src, size)?;
1129             Ok(TypedReg::i32(dst))
1130         })
1131     }
1132 
1133     fn visit_i64_sub(&mut self) -> Self::Output {
1134         self.context.i64_binop(self.masm, |masm, dst, src, size| {
1135             masm.sub(writable!(dst), dst, src, size)?;
1136             Ok(TypedReg::i64(dst))
1137         })
1138     }
1139 
1140     fn visit_i32_mul(&mut self) -> Self::Output {
1141         self.context.i32_binop(self.masm, |masm, dst, src, size| {
1142             masm.mul(writable!(dst), dst, src, size)?;
1143             Ok(TypedReg::i32(dst))
1144         })
1145     }
1146 
1147     fn visit_i64_mul(&mut self) -> Self::Output {
1148         self.context.i64_binop(self.masm, |masm, dst, src, size| {
1149             masm.mul(writable!(dst), dst, src, size)?;
1150             Ok(TypedReg::i64(dst))
1151         })
1152     }
1153 
1154     fn visit_i32_div_s(&mut self) -> Self::Output {
1155         use DivKind::*;
1156         use OperandSize::*;
1157 
1158         self.masm.div(&mut self.context, Signed, S32)
1159     }
1160 
1161     fn visit_i32_div_u(&mut self) -> Self::Output {
1162         use DivKind::*;
1163         use OperandSize::*;
1164 
1165         self.masm.div(&mut self.context, Unsigned, S32)
1166     }
1167 
1168     fn visit_i64_div_s(&mut self) -> Self::Output {
1169         use DivKind::*;
1170         use OperandSize::*;
1171 
1172         self.masm.div(&mut self.context, Signed, S64)
1173     }
1174 
1175     fn visit_i64_div_u(&mut self) -> Self::Output {
1176         use DivKind::*;
1177         use OperandSize::*;
1178 
1179         self.masm.div(&mut self.context, Unsigned, S64)
1180     }
1181 
1182     fn visit_i32_rem_s(&mut self) -> Self::Output {
1183         use OperandSize::*;
1184         use RemKind::*;
1185 
1186         self.masm.rem(&mut self.context, Signed, S32)
1187     }
1188 
1189     fn visit_i32_rem_u(&mut self) -> Self::Output {
1190         use OperandSize::*;
1191         use RemKind::*;
1192 
1193         self.masm.rem(&mut self.context, Unsigned, S32)
1194     }
1195 
1196     fn visit_i64_rem_s(&mut self) -> Self::Output {
1197         use OperandSize::*;
1198         use RemKind::*;
1199 
1200         self.masm.rem(&mut self.context, Signed, S64)
1201     }
1202 
1203     fn visit_i64_rem_u(&mut self) -> Self::Output {
1204         use OperandSize::*;
1205         use RemKind::*;
1206 
1207         self.masm.rem(&mut self.context, Unsigned, S64)
1208     }
1209 
1210     fn visit_i32_eq(&mut self) -> Self::Output {
1211         self.cmp_i32s(IntCmpKind::Eq)
1212     }
1213 
1214     fn visit_i64_eq(&mut self) -> Self::Output {
1215         self.cmp_i64s(IntCmpKind::Eq)
1216     }
1217 
1218     fn visit_i32_ne(&mut self) -> Self::Output {
1219         self.cmp_i32s(IntCmpKind::Ne)
1220     }
1221 
1222     fn visit_i64_ne(&mut self) -> Self::Output {
1223         self.cmp_i64s(IntCmpKind::Ne)
1224     }
1225 
1226     fn visit_i32_lt_s(&mut self) -> Self::Output {
1227         self.cmp_i32s(IntCmpKind::LtS)
1228     }
1229 
1230     fn visit_i64_lt_s(&mut self) -> Self::Output {
1231         self.cmp_i64s(IntCmpKind::LtS)
1232     }
1233 
1234     fn visit_i32_lt_u(&mut self) -> Self::Output {
1235         self.cmp_i32s(IntCmpKind::LtU)
1236     }
1237 
1238     fn visit_i64_lt_u(&mut self) -> Self::Output {
1239         self.cmp_i64s(IntCmpKind::LtU)
1240     }
1241 
1242     fn visit_i32_le_s(&mut self) -> Self::Output {
1243         self.cmp_i32s(IntCmpKind::LeS)
1244     }
1245 
1246     fn visit_i64_le_s(&mut self) -> Self::Output {
1247         self.cmp_i64s(IntCmpKind::LeS)
1248     }
1249 
1250     fn visit_i32_le_u(&mut self) -> Self::Output {
1251         self.cmp_i32s(IntCmpKind::LeU)
1252     }
1253 
1254     fn visit_i64_le_u(&mut self) -> Self::Output {
1255         self.cmp_i64s(IntCmpKind::LeU)
1256     }
1257 
1258     fn visit_i32_gt_s(&mut self) -> Self::Output {
1259         self.cmp_i32s(IntCmpKind::GtS)
1260     }
1261 
1262     fn visit_i64_gt_s(&mut self) -> Self::Output {
1263         self.cmp_i64s(IntCmpKind::GtS)
1264     }
1265 
1266     fn visit_i32_gt_u(&mut self) -> Self::Output {
1267         self.cmp_i32s(IntCmpKind::GtU)
1268     }
1269 
1270     fn visit_i64_gt_u(&mut self) -> Self::Output {
1271         self.cmp_i64s(IntCmpKind::GtU)
1272     }
1273 
1274     fn visit_i32_ge_s(&mut self) -> Self::Output {
1275         self.cmp_i32s(IntCmpKind::GeS)
1276     }
1277 
1278     fn visit_i64_ge_s(&mut self) -> Self::Output {
1279         self.cmp_i64s(IntCmpKind::GeS)
1280     }
1281 
1282     fn visit_i32_ge_u(&mut self) -> Self::Output {
1283         self.cmp_i32s(IntCmpKind::GeU)
1284     }
1285 
1286     fn visit_i64_ge_u(&mut self) -> Self::Output {
1287         self.cmp_i64s(IntCmpKind::GeU)
1288     }
1289 
1290     fn visit_i32_eqz(&mut self) -> Self::Output {
1291         use OperandSize::*;
1292 
1293         self.context.unop(self.masm, |masm, reg| {
1294             masm.cmp_with_set(writable!(reg), RegImm::i32(0), IntCmpKind::Eq, S32)?;
1295             Ok(TypedReg::i32(reg))
1296         })
1297     }
1298 
1299     fn visit_i64_eqz(&mut self) -> Self::Output {
1300         use OperandSize::*;
1301 
1302         self.context.unop(self.masm, |masm, reg| {
1303             masm.cmp_with_set(writable!(reg), RegImm::i64(0), IntCmpKind::Eq, S64)?;
1304             Ok(TypedReg::i32(reg)) // Return value for `i64.eqz` is an `i32`.
1305         })
1306     }
1307 
1308     fn visit_i32_clz(&mut self) -> Self::Output {
1309         use OperandSize::*;
1310 
1311         self.context.unop(self.masm, |masm, reg| {
1312             masm.clz(writable!(reg), reg, S32)?;
1313             Ok(TypedReg::i32(reg))
1314         })
1315     }
1316 
1317     fn visit_i64_clz(&mut self) -> Self::Output {
1318         use OperandSize::*;
1319 
1320         self.context.unop(self.masm, |masm, reg| {
1321             masm.clz(writable!(reg), reg, S64)?;
1322             Ok(TypedReg::i64(reg))
1323         })
1324     }
1325 
1326     fn visit_i32_ctz(&mut self) -> Self::Output {
1327         use OperandSize::*;
1328 
1329         self.context.unop(self.masm, |masm, reg| {
1330             masm.ctz(writable!(reg), reg, S32)?;
1331             Ok(TypedReg::i32(reg))
1332         })
1333     }
1334 
1335     fn visit_i64_ctz(&mut self) -> Self::Output {
1336         use OperandSize::*;
1337 
1338         self.context.unop(self.masm, |masm, reg| {
1339             masm.ctz(writable!(reg), reg, S64)?;
1340             Ok(TypedReg::i64(reg))
1341         })
1342     }
1343 
1344     fn visit_i32_and(&mut self) -> Self::Output {
1345         self.context.i32_binop(self.masm, |masm, dst, src, size| {
1346             masm.and(writable!(dst), dst, src, size)?;
1347             Ok(TypedReg::i32(dst))
1348         })
1349     }
1350 
1351     fn visit_i64_and(&mut self) -> Self::Output {
1352         self.context.i64_binop(self.masm, |masm, dst, src, size| {
1353             masm.and(writable!(dst), dst, src, size)?;
1354             Ok(TypedReg::i64(dst))
1355         })
1356     }
1357 
1358     fn visit_i32_or(&mut self) -> Self::Output {
1359         self.context.i32_binop(self.masm, |masm, dst, src, size| {
1360             masm.or(writable!(dst), dst, src, size)?;
1361             Ok(TypedReg::i32(dst))
1362         })
1363     }
1364 
1365     fn visit_i64_or(&mut self) -> Self::Output {
1366         self.context.i64_binop(self.masm, |masm, dst, src, size| {
1367             masm.or(writable!(dst), dst, src, size)?;
1368             Ok(TypedReg::i64(dst))
1369         })
1370     }
1371 
1372     fn visit_i32_xor(&mut self) -> Self::Output {
1373         self.context.i32_binop(self.masm, |masm, dst, src, size| {
1374             masm.xor(writable!(dst), dst, src, size)?;
1375             Ok(TypedReg::i32(dst))
1376         })
1377     }
1378 
1379     fn visit_i64_xor(&mut self) -> Self::Output {
1380         self.context.i64_binop(self.masm, |masm, dst, src, size| {
1381             masm.xor(writable!(dst), dst, src, size)?;
1382             Ok(TypedReg::i64(dst))
1383         })
1384     }
1385 
1386     fn visit_i32_shl(&mut self) -> Self::Output {
1387         use ShiftKind::*;
1388 
1389         self.context.i32_shift(self.masm, Shl)
1390     }
1391 
1392     fn visit_i64_shl(&mut self) -> Self::Output {
1393         use ShiftKind::*;
1394 
1395         self.context.i64_shift(self.masm, Shl)
1396     }
1397 
1398     fn visit_i32_shr_s(&mut self) -> Self::Output {
1399         use ShiftKind::*;
1400 
1401         self.context.i32_shift(self.masm, ShrS)
1402     }
1403 
1404     fn visit_i64_shr_s(&mut self) -> Self::Output {
1405         use ShiftKind::*;
1406 
1407         self.context.i64_shift(self.masm, ShrS)
1408     }
1409 
1410     fn visit_i32_shr_u(&mut self) -> Self::Output {
1411         use ShiftKind::*;
1412 
1413         self.context.i32_shift(self.masm, ShrU)
1414     }
1415 
1416     fn visit_i64_shr_u(&mut self) -> Self::Output {
1417         use ShiftKind::*;
1418 
1419         self.context.i64_shift(self.masm, ShrU)
1420     }
1421 
1422     fn visit_i32_rotl(&mut self) -> Self::Output {
1423         use ShiftKind::*;
1424 
1425         self.context.i32_shift(self.masm, Rotl)
1426     }
1427 
1428     fn visit_i64_rotl(&mut self) -> Self::Output {
1429         use ShiftKind::*;
1430 
1431         self.context.i64_shift(self.masm, Rotl)
1432     }
1433 
1434     fn visit_i32_rotr(&mut self) -> Self::Output {
1435         use ShiftKind::*;
1436 
1437         self.context.i32_shift(self.masm, Rotr)
1438     }
1439 
1440     fn visit_i64_rotr(&mut self) -> Self::Output {
1441         use ShiftKind::*;
1442 
1443         self.context.i64_shift(self.masm, Rotr)
1444     }
1445 
1446     fn visit_end(&mut self) -> Self::Output {
1447         if !self.context.reachable {
1448             self.handle_unreachable_end()
1449         } else {
1450             let mut control = self.pop_control_frame()?;
1451             control.emit_end(self.masm, &mut self.context)
1452         }
1453     }
1454 
1455     fn visit_i32_popcnt(&mut self) -> Self::Output {
1456         use OperandSize::*;
1457         self.masm.popcnt(&mut self.context, S32)
1458     }
1459 
1460     fn visit_i64_popcnt(&mut self) -> Self::Output {
1461         use OperandSize::*;
1462 
1463         self.masm.popcnt(&mut self.context, S64)
1464     }
1465 
1466     fn visit_i32_wrap_i64(&mut self) -> Self::Output {
1467         self.context.unop(self.masm, |masm, reg| {
1468             masm.wrap(writable!(reg), reg)?;
1469             Ok(TypedReg::i32(reg))
1470         })
1471     }
1472 
1473     fn visit_i64_extend_i32_s(&mut self) -> Self::Output {
1474         self.context.unop(self.masm, |masm, reg| {
1475             masm.extend(writable!(reg), reg, Extend::<Signed>::I64Extend32.into())?;
1476             Ok(TypedReg::i64(reg))
1477         })
1478     }
1479 
1480     fn visit_i64_extend_i32_u(&mut self) -> Self::Output {
1481         self.context.unop(self.masm, |masm, reg| {
1482             masm.extend(writable!(reg), reg, Extend::<Zero>::I64Extend32.into())?;
1483             Ok(TypedReg::i64(reg))
1484         })
1485     }
1486 
1487     fn visit_i32_extend8_s(&mut self) -> Self::Output {
1488         self.context.unop(self.masm, |masm, reg| {
1489             masm.extend(writable!(reg), reg, Extend::<Signed>::I32Extend8.into())?;
1490             Ok(TypedReg::i32(reg))
1491         })
1492     }
1493 
1494     fn visit_i32_extend16_s(&mut self) -> Self::Output {
1495         self.context.unop(self.masm, |masm, reg| {
1496             masm.extend(writable!(reg), reg, Extend::<Signed>::I32Extend16.into())?;
1497             Ok(TypedReg::i32(reg))
1498         })
1499     }
1500 
1501     fn visit_i64_extend8_s(&mut self) -> Self::Output {
1502         self.context.unop(self.masm, |masm, reg| {
1503             masm.extend(writable!(reg), reg, Extend::<Signed>::I64Extend8.into())?;
1504             Ok(TypedReg::i64(reg))
1505         })
1506     }
1507 
1508     fn visit_i64_extend16_s(&mut self) -> Self::Output {
1509         self.context.unop(self.masm, |masm, reg| {
1510             masm.extend(writable!(reg), reg, Extend::<Signed>::I64Extend16.into())?;
1511             Ok(TypedReg::i64(reg))
1512         })
1513     }
1514 
1515     fn visit_i64_extend32_s(&mut self) -> Self::Output {
1516         self.context.unop(self.masm, |masm, reg| {
1517             masm.extend(writable!(reg), reg, Extend::<Signed>::I64Extend32.into())?;
1518             Ok(TypedReg::i64(reg))
1519         })
1520     }
1521 
1522     fn visit_i32_trunc_f32_s(&mut self) -> Self::Output {
1523         use OperandSize::*;
1524 
1525         self.context
1526             .convert_op(self.masm, WasmValType::I32, |masm, dst, src, dst_size| {
1527                 masm.signed_truncate(writable!(dst), src, S32, dst_size, TruncKind::Unchecked)
1528             })
1529     }
1530 
1531     fn visit_i32_trunc_f32_u(&mut self) -> Self::Output {
1532         use OperandSize::*;
1533 
1534         self.masm
1535             .unsigned_truncate(&mut self.context, S32, S32, TruncKind::Unchecked)
1536     }
1537 
1538     fn visit_i32_trunc_f64_s(&mut self) -> Self::Output {
1539         use OperandSize::*;
1540 
1541         self.context
1542             .convert_op(self.masm, WasmValType::I32, |masm, dst, src, dst_size| {
1543                 masm.signed_truncate(writable!(dst), src, S64, dst_size, TruncKind::Unchecked)
1544             })
1545     }
1546 
1547     fn visit_i32_trunc_f64_u(&mut self) -> Self::Output {
1548         use OperandSize::*;
1549         self.masm
1550             .unsigned_truncate(&mut self.context, S64, S32, TruncKind::Unchecked)
1551     }
1552 
1553     fn visit_i64_trunc_f32_s(&mut self) -> Self::Output {
1554         use OperandSize::*;
1555 
1556         self.context
1557             .convert_op(self.masm, WasmValType::I64, |masm, dst, src, dst_size| {
1558                 masm.signed_truncate(writable!(dst), src, S32, dst_size, TruncKind::Unchecked)
1559             })
1560     }
1561 
1562     fn visit_i64_trunc_f32_u(&mut self) -> Self::Output {
1563         use OperandSize::*;
1564 
1565         self.masm
1566             .unsigned_truncate(&mut self.context, S32, S64, TruncKind::Unchecked)
1567     }
1568 
1569     fn visit_i64_trunc_f64_s(&mut self) -> Self::Output {
1570         use OperandSize::*;
1571 
1572         self.context
1573             .convert_op(self.masm, WasmValType::I64, |masm, dst, src, dst_size| {
1574                 masm.signed_truncate(writable!(dst), src, S64, dst_size, TruncKind::Unchecked)
1575             })
1576     }
1577 
1578     fn visit_i64_trunc_f64_u(&mut self) -> Self::Output {
1579         use OperandSize::*;
1580 
1581         self.masm
1582             .unsigned_truncate(&mut self.context, S64, S64, TruncKind::Unchecked)
1583     }
1584 
1585     fn visit_i32_reinterpret_f32(&mut self) -> Self::Output {
1586         self.context
1587             .convert_op(self.masm, WasmValType::I32, |masm, dst, src, size| {
1588                 masm.reinterpret_float_as_int(writable!(dst), src, size)
1589             })
1590     }
1591 
1592     fn visit_i64_reinterpret_f64(&mut self) -> Self::Output {
1593         self.context
1594             .convert_op(self.masm, WasmValType::I64, |masm, dst, src, size| {
1595                 masm.reinterpret_float_as_int(writable!(dst), src, size)
1596             })
1597     }
1598 
1599     fn visit_local_get(&mut self, index: u32) -> Self::Output {
1600         use WasmValType::*;
1601         let context = &mut self.context;
1602         let slot = context.frame.get_wasm_local(index);
1603         match slot.ty {
1604             I32 | I64 | F32 | F64 | V128 => context.stack.push(Val::local(index, slot.ty)),
1605             Ref(rt) => match rt.heap_type {
1606                 WasmHeapType::Func => context.stack.push(Val::local(index, slot.ty)),
1607                 _ => bail!(CodeGenError::unsupported_wasm_type()),
1608             },
1609         }
1610 
1611         Ok(())
1612     }
1613 
1614     fn visit_local_set(&mut self, index: u32) -> Self::Output {
1615         let src = self.emit_set_local(index)?;
1616         self.context.free_reg(src);
1617         Ok(())
1618     }
1619 
1620     fn visit_call(&mut self, index: u32) -> Self::Output {
1621         let callee = self.env.callee_from_index(FuncIndex::from_u32(index));
1622         FnCall::emit::<M>(&mut self.env, self.masm, &mut self.context, callee)?;
1623         Ok(())
1624     }
1625 
1626     fn visit_call_indirect(&mut self, type_index: u32, table_index: u32) -> Self::Output {
1627         // Spill now because `emit_lazy_init_funcref` and the `FnCall::emit`
1628         // invocations will both trigger spills since they both call functions.
1629         // However, the machine instructions for the spill emitted by
1630         // `emit_lazy_funcref` will be jumped over if the funcref was previously
1631         // initialized which may result in the machine stack becoming
1632         // unbalanced.
1633         self.context.spill(self.masm)?;
1634 
1635         let type_index = TypeIndex::from_u32(type_index);
1636         let table_index = TableIndex::from_u32(table_index);
1637 
1638         self.emit_lazy_init_funcref(table_index)?;
1639 
1640         // Perform the indirect call.
1641         // This code assumes that [`Self::emit_lazy_init_funcref`] will
1642         // push the funcref to the value stack.
1643         let funcref_ptr = self
1644             .context
1645             .stack
1646             .peek()
1647             .map(|v| v.unwrap_reg())
1648             .ok_or_else(|| CodeGenError::missing_values_in_stack())?;
1649         self.masm
1650             .trapz(funcref_ptr.into(), TRAP_INDIRECT_CALL_TO_NULL)?;
1651         self.emit_typecheck_funcref(funcref_ptr.into(), type_index)?;
1652 
1653         let callee = self.env.funcref(type_index);
1654         FnCall::emit::<M>(&mut self.env, self.masm, &mut self.context, callee)?;
1655         Ok(())
1656     }
1657 
1658     fn visit_table_init(&mut self, elem: u32, table: u32) -> Self::Output {
1659         let at = self.context.stack.ensure_index_at(3)?;
1660 
1661         self.context
1662             .stack
1663             .insert_many(at, &[table.try_into()?, elem.try_into()?]);
1664 
1665         let builtin = self.env.builtins.table_init::<M::ABI, M::Ptr>()?;
1666         FnCall::emit::<M>(
1667             &mut self.env,
1668             self.masm,
1669             &mut self.context,
1670             Callee::Builtin(builtin.clone()),
1671         )?;
1672         self.context.pop_and_free(self.masm)
1673     }
1674 
1675     fn visit_table_copy(&mut self, dst: u32, src: u32) -> Self::Output {
1676         let at = self.context.stack.ensure_index_at(3)?;
1677         self.context
1678             .stack
1679             .insert_many(at, &[dst.try_into()?, src.try_into()?]);
1680 
1681         let builtin = self.env.builtins.table_copy::<M::ABI, M::Ptr>()?;
1682         FnCall::emit::<M>(
1683             &mut self.env,
1684             self.masm,
1685             &mut self.context,
1686             Callee::Builtin(builtin),
1687         )?;
1688         self.context.pop_and_free(self.masm)
1689     }
1690 
1691     fn visit_table_get(&mut self, table: u32) -> Self::Output {
1692         let table_index = TableIndex::from_u32(table);
1693         let table = self.env.table(table_index);
1694         let heap_type = table.ref_type.heap_type;
1695 
1696         match heap_type {
1697             WasmHeapType::Func => self.emit_lazy_init_funcref(table_index),
1698             _ => Err(anyhow!(CodeGenError::unsupported_wasm_type())),
1699         }
1700     }
1701 
1702     fn visit_table_grow(&mut self, table: u32) -> Self::Output {
1703         let table_index = TableIndex::from_u32(table);
1704         let table_ty = self.env.table(table_index);
1705         let builtin = match table_ty.ref_type.heap_type {
1706             WasmHeapType::Func => self.env.builtins.table_grow_func_ref::<M::ABI, M::Ptr>()?,
1707             _ => bail!(CodeGenError::unsupported_wasm_type()),
1708         };
1709 
1710         let len = self.context.stack.len();
1711         // table.grow` requires at least 2 elements on the value stack.
1712         let at = self.context.stack.ensure_index_at(2)?;
1713 
1714         // The table_grow builtin expects the parameters in a different
1715         // order.
1716         // The value stack at this point should contain:
1717         // [ init_value | delta ] (stack top)
1718         // but the builtin function expects the init value as the last
1719         // argument.
1720         self.context.stack.inner_mut().swap(len - 1, len - 2);
1721         self.context.stack.insert_many(at, &[table.try_into()?]);
1722 
1723         FnCall::emit::<M>(
1724             &mut self.env,
1725             self.masm,
1726             &mut self.context,
1727             Callee::Builtin(builtin.clone()),
1728         )?;
1729 
1730         Ok(())
1731     }
1732 
1733     fn visit_table_size(&mut self, table: u32) -> Self::Output {
1734         let table_index = TableIndex::from_u32(table);
1735         let table_data = self.env.resolve_table_data(table_index);
1736         self.emit_compute_table_size(&table_data)
1737     }
1738 
1739     fn visit_table_fill(&mut self, table: u32) -> Self::Output {
1740         let table_index = TableIndex::from_u32(table);
1741         let table_ty = self.env.table(table_index);
1742 
1743         ensure!(
1744             table_ty.ref_type.heap_type == WasmHeapType::Func,
1745             CodeGenError::unsupported_wasm_type()
1746         );
1747 
1748         let builtin = self.env.builtins.table_fill_func_ref::<M::ABI, M::Ptr>()?;
1749 
1750         let at = self.context.stack.ensure_index_at(3)?;
1751 
1752         self.context.stack.insert_many(at, &[table.try_into()?]);
1753         FnCall::emit::<M>(
1754             &mut self.env,
1755             self.masm,
1756             &mut self.context,
1757             Callee::Builtin(builtin.clone()),
1758         )?;
1759         self.context.pop_and_free(self.masm)
1760     }
1761 
1762     fn visit_table_set(&mut self, table: u32) -> Self::Output {
1763         let ptr_type = self.env.ptr_type();
1764         let table_index = TableIndex::from_u32(table);
1765         let table_data = self.env.resolve_table_data(table_index);
1766         let table = self.env.table(table_index);
1767         match table.ref_type.heap_type {
1768             WasmHeapType::Func => {
1769                 ensure!(
1770                     self.tunables.table_lazy_init,
1771                     CodeGenError::unsupported_table_eager_init()
1772                 );
1773                 let value = self.context.pop_to_reg(self.masm, None)?;
1774                 let index = self.context.pop_to_reg(self.masm, None)?;
1775                 let base = self.context.any_gpr(self.masm)?;
1776                 let elem_addr =
1777                     self.emit_compute_table_elem_addr(index.into(), base, &table_data)?;
1778                 // Set the initialized bit.
1779                 self.masm.or(
1780                     writable!(value.into()),
1781                     value.into(),
1782                     RegImm::i64(FUNCREF_INIT_BIT as i64),
1783                     ptr_type.try_into()?,
1784                 )?;
1785 
1786                 self.masm.store_ptr(value.into(), elem_addr)?;
1787 
1788                 self.context.free_reg(value);
1789                 self.context.free_reg(index);
1790                 self.context.free_reg(base);
1791                 Ok(())
1792             }
1793             _ => Err(anyhow!(CodeGenError::unsupported_wasm_type())),
1794         }
1795     }
1796 
1797     fn visit_elem_drop(&mut self, index: u32) -> Self::Output {
1798         let elem_drop = self.env.builtins.elem_drop::<M::ABI, M::Ptr>()?;
1799         self.context.stack.extend([index.try_into()?]);
1800         FnCall::emit::<M>(
1801             &mut self.env,
1802             self.masm,
1803             &mut self.context,
1804             Callee::Builtin(elem_drop),
1805         )?;
1806         Ok(())
1807     }
1808 
1809     fn visit_memory_init(&mut self, data_index: u32, mem: u32) -> Self::Output {
1810         let at = self.context.stack.ensure_index_at(3)?;
1811         self.context
1812             .stack
1813             .insert_many(at, &[mem.try_into()?, data_index.try_into()?]);
1814         let builtin = self.env.builtins.memory_init::<M::ABI, M::Ptr>()?;
1815         FnCall::emit::<M>(
1816             &mut self.env,
1817             self.masm,
1818             &mut self.context,
1819             Callee::Builtin(builtin),
1820         )?;
1821         self.context.pop_and_free(self.masm)
1822     }
1823 
1824     fn visit_memory_copy(&mut self, dst_mem: u32, src_mem: u32) -> Self::Output {
1825         // At this point, the stack is expected to contain:
1826         //     [ dst_offset, src_offset, len ]
1827         // The following code inserts the missing params, so that stack contains:
1828         //     [ vmctx, dst_mem, dst_offset, src_mem, src_offset, len ]
1829         // Which is the order expected by the builtin function.
1830         let _ = self.context.stack.ensure_index_at(3)?;
1831         let at = self.context.stack.ensure_index_at(2)?;
1832         self.context.stack.insert_many(at, &[src_mem.try_into()?]);
1833 
1834         // One element was inserted above, so instead of 3, we use 4.
1835         let at = self.context.stack.ensure_index_at(4)?;
1836         self.context.stack.insert_many(at, &[dst_mem.try_into()?]);
1837 
1838         let builtin = self.env.builtins.memory_copy::<M::ABI, M::Ptr>()?;
1839 
1840         FnCall::emit::<M>(
1841             &mut self.env,
1842             self.masm,
1843             &mut self.context,
1844             Callee::Builtin(builtin),
1845         )?;
1846         self.context.pop_and_free(self.masm)
1847     }
1848 
1849     fn visit_memory_fill(&mut self, mem: u32) -> Self::Output {
1850         let at = self.context.stack.ensure_index_at(3)?;
1851 
1852         self.context.stack.insert_many(at, &[mem.try_into()?]);
1853 
1854         let builtin = self.env.builtins.memory_fill::<M::ABI, M::Ptr>()?;
1855         FnCall::emit::<M>(
1856             &mut self.env,
1857             self.masm,
1858             &mut self.context,
1859             Callee::Builtin(builtin),
1860         )?;
1861         self.context.pop_and_free(self.masm)
1862     }
1863 
1864     fn visit_memory_size(&mut self, mem: u32) -> Self::Output {
1865         let heap = self.env.resolve_heap(MemoryIndex::from_u32(mem));
1866         self.emit_compute_memory_size(&heap)
1867     }
1868 
1869     fn visit_memory_grow(&mut self, mem: u32) -> Self::Output {
1870         let _ = self.context.stack.ensure_index_at(1)?;
1871         // The stack at this point contains: [ delta ]
1872         // The desired state is
1873         //   [ vmctx, delta, index ]
1874         self.context.stack.extend([mem.try_into()?]);
1875 
1876         let heap = self.env.resolve_heap(MemoryIndex::from_u32(mem));
1877         let builtin = self.env.builtins.memory32_grow::<M::ABI, M::Ptr>()?;
1878         FnCall::emit::<M>(
1879             &mut self.env,
1880             self.masm,
1881             &mut self.context,
1882             Callee::Builtin(builtin),
1883         )?;
1884 
1885         // The memory32_grow builtin returns a pointer type, therefore we must
1886         // ensure that the return type is representative of the address space of
1887         // the heap type.
1888         match (self.env.ptr_type(), heap.index_type()) {
1889             (WasmValType::I64, WasmValType::I64) => Ok(()),
1890             // When the heap type is smaller than the pointer type, we adjust
1891             // the result of the memory32_grow builtin.
1892             (WasmValType::I64, WasmValType::I32) => {
1893                 let top: Reg = self.context.pop_to_reg(self.masm, None)?.into();
1894                 self.masm.wrap(writable!(top), top)?;
1895                 self.context.stack.push(TypedReg::i32(top).into());
1896                 Ok(())
1897             }
1898             _ => Err(anyhow!(CodeGenError::unsupported_32_bit_platform())),
1899         }
1900     }
1901 
1902     fn visit_data_drop(&mut self, data_index: u32) -> Self::Output {
1903         self.context.stack.extend([data_index.try_into()?]);
1904 
1905         let builtin = self.env.builtins.data_drop::<M::ABI, M::Ptr>()?;
1906         FnCall::emit::<M>(
1907             &mut self.env,
1908             self.masm,
1909             &mut self.context,
1910             Callee::Builtin(builtin),
1911         )
1912     }
1913 
1914     fn visit_nop(&mut self) -> Self::Output {
1915         Ok(())
1916     }
1917 
1918     fn visit_if(&mut self, blockty: BlockType) -> Self::Output {
1919         self.control_frames.push(ControlStackFrame::r#if(
1920             self.env.resolve_block_sig(blockty)?,
1921             self.masm,
1922             &mut self.context,
1923         )?);
1924 
1925         Ok(())
1926     }
1927 
1928     fn visit_else(&mut self) -> Self::Output {
1929         if !self.context.reachable {
1930             self.handle_unreachable_else()
1931         } else {
1932             let control = self
1933                 .control_frames
1934                 .last_mut()
1935                 .ok_or_else(|| CodeGenError::control_frame_expected())?;
1936             control.emit_else(self.masm, &mut self.context)
1937         }
1938     }
1939 
1940     fn visit_block(&mut self, blockty: BlockType) -> Self::Output {
1941         self.control_frames.push(ControlStackFrame::block(
1942             self.env.resolve_block_sig(blockty)?,
1943             self.masm,
1944             &mut self.context,
1945         )?);
1946 
1947         Ok(())
1948     }
1949 
1950     fn visit_loop(&mut self, blockty: BlockType) -> Self::Output {
1951         self.control_frames.push(ControlStackFrame::r#loop(
1952             self.env.resolve_block_sig(blockty)?,
1953             self.masm,
1954             &mut self.context,
1955         )?);
1956 
1957         self.maybe_emit_epoch_check()?;
1958         self.maybe_emit_fuel_check()
1959     }
1960 
1961     fn visit_br(&mut self, depth: u32) -> Self::Output {
1962         let index = control_index(depth, self.control_frames.len())?;
1963         let frame = &mut self.control_frames[index];
1964         self.context
1965             .br::<_, _, UnconditionalBranch>(frame, self.masm, |masm, cx, frame| {
1966                 frame.pop_abi_results::<M, _>(cx, masm, |results, _, _| {
1967                     Ok(results.ret_area().copied())
1968                 })
1969             })
1970     }
1971 
1972     fn visit_br_if(&mut self, depth: u32) -> Self::Output {
1973         let index = control_index(depth, self.control_frames.len())?;
1974         let frame = &mut self.control_frames[index];
1975         frame.set_as_target();
1976 
1977         let top = {
1978             let top = self.context.without::<Result<TypedReg>, M, _>(
1979                 frame.results::<M>()?.regs(),
1980                 self.masm,
1981                 |ctx, masm| ctx.pop_to_reg(masm, None),
1982             )??;
1983             // Explicitly save any live registers and locals before setting up
1984             // the branch state.
1985             // In some cases, calculating the `top` value above, will result in
1986             // a spill, thus the following one will result in a no-op.
1987             self.context.spill(self.masm)?;
1988             frame.top_abi_results::<M, _>(
1989                 &mut self.context,
1990                 self.masm,
1991                 |results, context, masm| {
1992                     // In the case of `br_if` there's a possibility that we'll
1993                     // exit early from the block or fallthrough, for
1994                     // a fallthrough, we cannot rely on the pre-computed return area;
1995                     // it must be recalculated so that any values that are
1996                     // generated are correctly placed near the current stack
1997                     // pointer.
1998                     if results.on_stack() {
1999                         let stack_consumed = context.stack.sizeof(results.stack_operands_len());
2000                         let base = masm.sp_offset()?.as_u32() - stack_consumed;
2001                         let offs = base + results.size();
2002                         Ok(Some(RetArea::sp(SPOffset::from_u32(offs))))
2003                     } else {
2004                         Ok(None)
2005                     }
2006                 },
2007             )?;
2008             top
2009         };
2010 
2011         // Emit instructions to balance the machine stack.
2012         let current_sp_offset = self.masm.sp_offset()?;
2013         let unbalanced = frame.unbalanced(self.masm)?;
2014         let (label, cmp) = if unbalanced {
2015             (self.masm.get_label()?, IntCmpKind::Eq)
2016         } else {
2017             (*frame.label(), IntCmpKind::Ne)
2018         };
2019 
2020         self.masm
2021             .branch(cmp, top.reg, top.reg.into(), label, OperandSize::S32)?;
2022         self.context.free_reg(top);
2023 
2024         if unbalanced {
2025             self.context
2026                 .br::<_, _, ConditionalBranch>(frame, self.masm, |_, _, _| Ok(()))?;
2027 
2028             // Restore sp_offset to what it was for falling through and emit
2029             // fallthrough label.
2030             self.masm.reset_stack_pointer(current_sp_offset)?;
2031             self.masm.bind(label)?;
2032         }
2033 
2034         Ok(())
2035     }
2036 
2037     fn visit_br_table(&mut self, targets: BrTable<'a>) -> Self::Output {
2038         // +1 to account for the default target.
2039         let len = targets.len() + 1;
2040         // SmallVec<[_; 5]> to match the binary emission layer (e.g
2041         // see `JmpTableSeq'), but here we use 5 instead since we
2042         // bundle the default target as the last element in the array.
2043         let mut labels: SmallVec<[_; 5]> = smallvec![];
2044         for _ in 0..len {
2045             labels.push(self.masm.get_label()?);
2046         }
2047 
2048         // Find the innermost target and use it as the relative frame
2049         // for result handling below.
2050         //
2051         // This approch ensures that
2052         // 1. The stack pointer offset is correctly positioned
2053         //    according to the expectations of the innermost block end
2054         //    sequence.
2055         // 2. We meet the jump site invariants introduced by
2056         //    `CodegenContext::br`, which take advantage of Wasm
2057         //    semantics given that all jumps are "outward".
2058         let mut innermost = targets.default();
2059         for target in targets.targets() {
2060             let target = target?;
2061             if target < innermost {
2062                 innermost = target;
2063             }
2064         }
2065 
2066         let innermost_index = control_index(innermost, self.control_frames.len())?;
2067         let innermost_frame = &mut self.control_frames[innermost_index];
2068         let innermost_result = innermost_frame.results::<M>()?;
2069 
2070         let (index, tmp) = {
2071             let index_and_tmp = self.context.without::<Result<(TypedReg, _)>, M, _>(
2072                 innermost_result.regs(),
2073                 self.masm,
2074                 |cx, masm| Ok((cx.pop_to_reg(masm, None)?, cx.any_gpr(masm)?)),
2075             )??;
2076 
2077             // Materialize any constants or locals into their result
2078             // representation, so that when reachability is restored,
2079             // they are correctly located.  NB: the results are popped
2080             // in function of the innermost branch specified for
2081             // `br_table`, which implies that the machine stack will
2082             // be correctly balanced, by virtue of calling
2083             // `pop_abi_results`.
2084 
2085             // It's possible that we need to balance the stack for the
2086             // rest of the targets, which will be done before emitting
2087             // the unconditional jump below.
2088             innermost_frame.pop_abi_results::<M, _>(
2089                 &mut self.context,
2090                 self.masm,
2091                 |results, _, _| Ok(results.ret_area().copied()),
2092             )?;
2093             index_and_tmp
2094         };
2095 
2096         self.masm.jmp_table(&labels, index.into(), tmp)?;
2097         // Save the original stack pointer offset; we will reset the stack
2098         // pointer to this offset after jumping to each of the targets. Each
2099         // jump might adjust the stack according to the base offset of the
2100         // target.
2101         let current_sp = self.masm.sp_offset()?;
2102 
2103         for (t, l) in targets
2104             .targets()
2105             .chain(std::iter::once(Ok(targets.default())))
2106             .zip(labels.iter())
2107         {
2108             let control_index = control_index(t?, self.control_frames.len())?;
2109             let frame = &mut self.control_frames[control_index];
2110             // Reset the stack pointer to its original offset. This is needed
2111             // because each jump will potentially adjust the stack pointer
2112             // according to the base offset of the target.
2113             self.masm.reset_stack_pointer(current_sp)?;
2114 
2115             // NB: We don't perform any result handling as it was
2116             // already taken care of above before jumping to the
2117             // jump table.
2118             self.masm.bind(*l)?;
2119             // Ensure that the stack pointer is correctly positioned before
2120             // jumping to the jump table code.
2121             self.context
2122                 .br::<_, _, UnconditionalBranch>(frame, self.masm, |_, _, _| Ok(()))?;
2123         }
2124         // Finally reset the stack pointer to the original location.
2125         // The reachability analysis, will ensure it's correctly located
2126         // once reachability is restored.
2127         self.masm.reset_stack_pointer(current_sp)?;
2128         self.context.reachable = false;
2129         self.context.free_reg(index.reg);
2130         self.context.free_reg(tmp);
2131 
2132         Ok(())
2133     }
2134 
2135     fn visit_return(&mut self) -> Self::Output {
2136         // Grab the outermost frame, which is the function's body
2137         // frame. We don't rely on [`codegen::control_index`] since
2138         // this frame is implicit and we know that it should exist at
2139         // index 0.
2140         let outermost = &mut self.control_frames[0];
2141         self.context
2142             .br::<_, _, UnconditionalBranch>(outermost, self.masm, |masm, cx, frame| {
2143                 frame.pop_abi_results::<M, _>(cx, masm, |results, _, _| {
2144                     Ok(results.ret_area().copied())
2145                 })
2146             })
2147     }
2148 
2149     fn visit_unreachable(&mut self) -> Self::Output {
2150         self.masm.unreachable()?;
2151         self.context.reachable = false;
2152         // Set the implicit outermost frame as target to perform the necessary
2153         // stack clean up.
2154         let outermost = &mut self.control_frames[0];
2155         outermost.set_as_target();
2156 
2157         Ok(())
2158     }
2159 
2160     fn visit_local_tee(&mut self, index: u32) -> Self::Output {
2161         let typed_reg = self.emit_set_local(index)?;
2162         self.context.stack.push(typed_reg.into());
2163 
2164         Ok(())
2165     }
2166 
2167     fn visit_global_get(&mut self, global_index: u32) -> Self::Output {
2168         let index = GlobalIndex::from_u32(global_index);
2169         let (ty, base, offset) = self.emit_get_global_addr(index)?;
2170         let addr = self.masm.address_at_reg(base, offset)?;
2171         let dst = self.context.reg_for_type(ty, self.masm)?;
2172         self.masm.load(addr, writable!(dst), ty.try_into()?)?;
2173         self.context.stack.push(Val::reg(dst, ty));
2174 
2175         self.context.free_reg(base);
2176 
2177         Ok(())
2178     }
2179 
2180     fn visit_global_set(&mut self, global_index: u32) -> Self::Output {
2181         let index = GlobalIndex::from_u32(global_index);
2182         let (ty, base, offset) = self.emit_get_global_addr(index)?;
2183         let addr = self.masm.address_at_reg(base, offset)?;
2184 
2185         let typed_reg = self.context.pop_to_reg(self.masm, None)?;
2186         self.masm
2187             .store(typed_reg.reg.into(), addr, ty.try_into()?)?;
2188         self.context.free_reg(typed_reg.reg);
2189         self.context.free_reg(base);
2190 
2191         Ok(())
2192     }
2193 
2194     fn visit_drop(&mut self) -> Self::Output {
2195         self.context.drop_last(1, |regalloc, val| match val {
2196             Val::Reg(tr) => Ok(regalloc.free(tr.reg)),
2197             Val::Memory(m) => self.masm.free_stack(m.slot.size),
2198             _ => Ok(()),
2199         })
2200     }
2201 
2202     fn visit_select(&mut self) -> Self::Output {
2203         let cond = self.context.pop_to_reg(self.masm, None)?;
2204         let val2 = self.context.pop_to_reg(self.masm, None)?;
2205         let val1 = self.context.pop_to_reg(self.masm, None)?;
2206         self.masm.cmp(cond.reg, RegImm::i32(0), OperandSize::S32)?;
2207         // Conditionally move val1 to val2 if the comparison is
2208         // not zero.
2209         self.masm.cmov(
2210             writable!(val2.into()),
2211             val1.into(),
2212             IntCmpKind::Ne,
2213             val1.ty.try_into()?,
2214         )?;
2215         self.context.stack.push(val2.into());
2216         self.context.free_reg(val1.reg);
2217         self.context.free_reg(cond);
2218 
2219         Ok(())
2220     }
2221 
2222     fn visit_i32_load(&mut self, memarg: MemArg) -> Self::Output {
2223         self.emit_wasm_load(
2224             &memarg,
2225             WasmValType::I32,
2226             LoadKind::Operand(OperandSize::S32),
2227         )
2228     }
2229 
2230     fn visit_i32_load8_s(&mut self, memarg: MemArg) -> Self::Output {
2231         self.emit_wasm_load(
2232             &memarg,
2233             WasmValType::I32,
2234             LoadKind::ScalarExtend(Extend::<Signed>::I32Extend8.into()),
2235         )
2236     }
2237 
2238     fn visit_i32_load8_u(&mut self, memarg: MemArg) -> Self::Output {
2239         self.emit_wasm_load(
2240             &memarg,
2241             WasmValType::I32,
2242             LoadKind::ScalarExtend(Extend::<Zero>::I32Extend8.into()),
2243         )
2244     }
2245 
2246     fn visit_i32_load16_s(&mut self, memarg: MemArg) -> Self::Output {
2247         self.emit_wasm_load(
2248             &memarg,
2249             WasmValType::I32,
2250             LoadKind::ScalarExtend(Extend::<Signed>::I32Extend16.into()),
2251         )
2252     }
2253 
2254     fn visit_i32_load16_u(&mut self, memarg: MemArg) -> Self::Output {
2255         self.emit_wasm_load(
2256             &memarg,
2257             WasmValType::I32,
2258             LoadKind::ScalarExtend(Extend::<Zero>::I32Extend16.into()),
2259         )
2260     }
2261 
2262     fn visit_i32_store(&mut self, memarg: MemArg) -> Self::Output {
2263         self.emit_wasm_store(&memarg, StoreKind::Operand(OperandSize::S32))
2264     }
2265 
2266     fn visit_i32_store8(&mut self, memarg: MemArg) -> Self::Output {
2267         self.emit_wasm_store(&memarg, StoreKind::Operand(OperandSize::S8))
2268     }
2269 
2270     fn visit_i32_store16(&mut self, memarg: MemArg) -> Self::Output {
2271         self.emit_wasm_store(&memarg, StoreKind::Operand(OperandSize::S16))
2272     }
2273 
2274     fn visit_i64_load8_s(&mut self, memarg: MemArg) -> Self::Output {
2275         self.emit_wasm_load(
2276             &memarg,
2277             WasmValType::I64,
2278             LoadKind::ScalarExtend(Extend::<Signed>::I64Extend8.into()),
2279         )
2280     }
2281 
2282     fn visit_i64_load8_u(&mut self, memarg: MemArg) -> Self::Output {
2283         self.emit_wasm_load(
2284             &memarg,
2285             WasmValType::I64,
2286             LoadKind::ScalarExtend(Extend::<Zero>::I64Extend8.into()),
2287         )
2288     }
2289 
2290     fn visit_i64_load16_u(&mut self, memarg: MemArg) -> Self::Output {
2291         self.emit_wasm_load(
2292             &memarg,
2293             WasmValType::I64,
2294             LoadKind::ScalarExtend(Extend::<Zero>::I64Extend16.into()),
2295         )
2296     }
2297 
2298     fn visit_i64_load16_s(&mut self, memarg: MemArg) -> Self::Output {
2299         self.emit_wasm_load(
2300             &memarg,
2301             WasmValType::I64,
2302             LoadKind::ScalarExtend(Extend::<Signed>::I64Extend16.into()),
2303         )
2304     }
2305 
2306     fn visit_i64_load32_u(&mut self, memarg: MemArg) -> Self::Output {
2307         self.emit_wasm_load(
2308             &memarg,
2309             WasmValType::I64,
2310             LoadKind::ScalarExtend(Extend::<Zero>::I64Extend32.into()),
2311         )
2312     }
2313 
2314     fn visit_i64_load32_s(&mut self, memarg: MemArg) -> Self::Output {
2315         self.emit_wasm_load(
2316             &memarg,
2317             WasmValType::I64,
2318             LoadKind::ScalarExtend(Extend::<Signed>::I64Extend32.into()),
2319         )
2320     }
2321 
2322     fn visit_i64_load(&mut self, memarg: MemArg) -> Self::Output {
2323         self.emit_wasm_load(
2324             &memarg,
2325             WasmValType::I64,
2326             LoadKind::Operand(OperandSize::S64),
2327         )
2328     }
2329 
2330     fn visit_i64_store(&mut self, memarg: MemArg) -> Self::Output {
2331         self.emit_wasm_store(&memarg, StoreKind::Operand(OperandSize::S64))
2332     }
2333 
2334     fn visit_i64_store8(&mut self, memarg: MemArg) -> Self::Output {
2335         self.emit_wasm_store(&memarg, StoreKind::Operand(OperandSize::S8))
2336     }
2337 
2338     fn visit_i64_store16(&mut self, memarg: MemArg) -> Self::Output {
2339         self.emit_wasm_store(&memarg, StoreKind::Operand(OperandSize::S16))
2340     }
2341 
2342     fn visit_i64_store32(&mut self, memarg: MemArg) -> Self::Output {
2343         self.emit_wasm_store(&memarg, StoreKind::Operand(OperandSize::S32))
2344     }
2345 
2346     fn visit_f32_load(&mut self, memarg: MemArg) -> Self::Output {
2347         self.emit_wasm_load(
2348             &memarg,
2349             WasmValType::F32,
2350             LoadKind::Operand(OperandSize::S32),
2351         )
2352     }
2353 
2354     fn visit_f32_store(&mut self, memarg: MemArg) -> Self::Output {
2355         self.emit_wasm_store(&memarg, StoreKind::Operand(OperandSize::S32))
2356     }
2357 
2358     fn visit_f64_load(&mut self, memarg: MemArg) -> Self::Output {
2359         self.emit_wasm_load(
2360             &memarg,
2361             WasmValType::F64,
2362             LoadKind::Operand(OperandSize::S64),
2363         )
2364     }
2365 
2366     fn visit_f64_store(&mut self, memarg: MemArg) -> Self::Output {
2367         self.emit_wasm_store(&memarg, StoreKind::Operand(OperandSize::S64))
2368     }
2369 
2370     fn visit_i32_trunc_sat_f32_s(&mut self) -> Self::Output {
2371         use OperandSize::*;
2372 
2373         self.context
2374             .convert_op(self.masm, WasmValType::I32, |masm, dst, src, dst_size| {
2375                 masm.signed_truncate(writable!(dst), src, S32, dst_size, TruncKind::Checked)
2376             })
2377     }
2378 
2379     fn visit_i32_trunc_sat_f32_u(&mut self) -> Self::Output {
2380         use OperandSize::*;
2381 
2382         self.masm
2383             .unsigned_truncate(&mut self.context, S32, S32, TruncKind::Checked)
2384     }
2385 
2386     fn visit_i32_trunc_sat_f64_s(&mut self) -> Self::Output {
2387         use OperandSize::*;
2388 
2389         self.context
2390             .convert_op(self.masm, WasmValType::I32, |masm, dst, src, dst_size| {
2391                 masm.signed_truncate(writable!(dst), src, S64, dst_size, TruncKind::Checked)
2392             })
2393     }
2394 
2395     fn visit_i32_trunc_sat_f64_u(&mut self) -> Self::Output {
2396         use OperandSize::*;
2397 
2398         self.masm
2399             .unsigned_truncate(&mut self.context, S64, S32, TruncKind::Checked)
2400     }
2401 
2402     fn visit_i64_trunc_sat_f32_s(&mut self) -> Self::Output {
2403         use OperandSize::*;
2404 
2405         self.context
2406             .convert_op(self.masm, WasmValType::I64, |masm, dst, src, dst_size| {
2407                 masm.signed_truncate(writable!(dst), src, S32, dst_size, TruncKind::Checked)
2408             })
2409     }
2410 
2411     fn visit_i64_trunc_sat_f32_u(&mut self) -> Self::Output {
2412         use OperandSize::*;
2413 
2414         self.masm
2415             .unsigned_truncate(&mut self.context, S32, S64, TruncKind::Checked)
2416     }
2417 
2418     fn visit_i64_trunc_sat_f64_s(&mut self) -> Self::Output {
2419         use OperandSize::*;
2420 
2421         self.context
2422             .convert_op(self.masm, WasmValType::I64, |masm, dst, src, dst_size| {
2423                 masm.signed_truncate(writable!(dst), src, S64, dst_size, TruncKind::Checked)
2424             })
2425     }
2426 
2427     fn visit_i64_trunc_sat_f64_u(&mut self) -> Self::Output {
2428         use OperandSize::*;
2429 
2430         self.masm
2431             .unsigned_truncate(&mut self.context, S64, S64, TruncKind::Checked)
2432     }
2433 
2434     fn visit_i64_add128(&mut self) -> Self::Output {
2435         self.context
2436             .binop128(self.masm, |masm, lhs_lo, lhs_hi, rhs_lo, rhs_hi| {
2437                 masm.add128(
2438                     writable!(lhs_lo),
2439                     writable!(lhs_hi),
2440                     lhs_lo,
2441                     lhs_hi,
2442                     rhs_lo,
2443                     rhs_hi,
2444                 )?;
2445                 Ok((TypedReg::i64(lhs_lo), TypedReg::i64(lhs_hi)))
2446             })
2447     }
2448 
2449     fn visit_i64_sub128(&mut self) -> Self::Output {
2450         self.context
2451             .binop128(self.masm, |masm, lhs_lo, lhs_hi, rhs_lo, rhs_hi| {
2452                 masm.sub128(
2453                     writable!(lhs_lo),
2454                     writable!(lhs_hi),
2455                     lhs_lo,
2456                     lhs_hi,
2457                     rhs_lo,
2458                     rhs_hi,
2459                 )?;
2460                 Ok((TypedReg::i64(lhs_lo), TypedReg::i64(lhs_hi)))
2461             })
2462     }
2463 
2464     fn visit_i64_mul_wide_s(&mut self) -> Self::Output {
2465         self.masm.mul_wide(&mut self.context, MulWideKind::Signed)
2466     }
2467 
2468     fn visit_i64_mul_wide_u(&mut self) -> Self::Output {
2469         self.masm.mul_wide(&mut self.context, MulWideKind::Unsigned)
2470     }
2471 
2472     fn visit_i32_atomic_load8_u(&mut self, memarg: MemArg) -> Self::Output {
2473         self.emit_wasm_load(
2474             &memarg,
2475             WasmValType::I32,
2476             LoadKind::Atomic(OperandSize::S8, Some(Extend::<Zero>::I32Extend8.into())),
2477         )
2478     }
2479 
2480     fn visit_i32_atomic_load16_u(&mut self, memarg: MemArg) -> Self::Output {
2481         self.emit_wasm_load(
2482             &memarg,
2483             WasmValType::I32,
2484             LoadKind::Atomic(OperandSize::S16, Some(Extend::<Zero>::I32Extend16.into())),
2485         )
2486     }
2487 
2488     fn visit_i32_atomic_load(&mut self, memarg: MemArg) -> Self::Output {
2489         self.emit_wasm_load(
2490             &memarg,
2491             WasmValType::I32,
2492             LoadKind::Atomic(OperandSize::S32, None),
2493         )
2494     }
2495 
2496     fn visit_i64_atomic_load8_u(&mut self, memarg: MemArg) -> Self::Output {
2497         self.emit_wasm_load(
2498             &memarg,
2499             WasmValType::I64,
2500             LoadKind::Atomic(OperandSize::S8, Some(Extend::<Zero>::I64Extend8.into())),
2501         )
2502     }
2503 
2504     fn visit_i64_atomic_load16_u(&mut self, memarg: MemArg) -> Self::Output {
2505         self.emit_wasm_load(
2506             &memarg,
2507             WasmValType::I64,
2508             LoadKind::Atomic(OperandSize::S16, Some(Extend::<Zero>::I64Extend16.into())),
2509         )
2510     }
2511 
2512     fn visit_i64_atomic_load32_u(&mut self, memarg: MemArg) -> Self::Output {
2513         self.emit_wasm_load(
2514             &memarg,
2515             WasmValType::I64,
2516             LoadKind::Atomic(OperandSize::S32, Some(Extend::<Zero>::I64Extend32.into())),
2517         )
2518     }
2519 
2520     fn visit_i64_atomic_load(&mut self, memarg: MemArg) -> Self::Output {
2521         self.emit_wasm_load(
2522             &memarg,
2523             WasmValType::I64,
2524             LoadKind::Atomic(OperandSize::S64, None),
2525         )
2526     }
2527 
2528     fn visit_i32_atomic_store(&mut self, memarg: MemArg) -> Self::Output {
2529         self.emit_wasm_store(&memarg, StoreKind::Atomic(OperandSize::S32))
2530     }
2531 
2532     fn visit_i64_atomic_store(&mut self, memarg: MemArg) -> Self::Output {
2533         self.emit_wasm_store(&memarg, StoreKind::Atomic(OperandSize::S64))
2534     }
2535 
2536     fn visit_i32_atomic_store8(&mut self, memarg: MemArg) -> Self::Output {
2537         self.emit_wasm_store(&memarg, StoreKind::Atomic(OperandSize::S8))
2538     }
2539 
2540     fn visit_i32_atomic_store16(&mut self, memarg: MemArg) -> Self::Output {
2541         self.emit_wasm_store(&memarg, StoreKind::Atomic(OperandSize::S16))
2542     }
2543 
2544     fn visit_i64_atomic_store8(&mut self, memarg: MemArg) -> Self::Output {
2545         self.emit_wasm_store(&memarg, StoreKind::Atomic(OperandSize::S8))
2546     }
2547 
2548     fn visit_i64_atomic_store16(&mut self, memarg: MemArg) -> Self::Output {
2549         self.emit_wasm_store(&memarg, StoreKind::Atomic(OperandSize::S16))
2550     }
2551 
2552     fn visit_i64_atomic_store32(&mut self, memarg: MemArg) -> Self::Output {
2553         self.emit_wasm_store(&memarg, StoreKind::Atomic(OperandSize::S32))
2554     }
2555 
2556     fn visit_i32_atomic_rmw8_add_u(&mut self, arg: MemArg) -> Self::Output {
2557         self.emit_atomic_rmw(
2558             &arg,
2559             RmwOp::Add,
2560             OperandSize::S8,
2561             Some(Extend::<Zero>::I32Extend8),
2562         )
2563     }
2564 
2565     fn visit_i32_atomic_rmw16_add_u(&mut self, arg: MemArg) -> Self::Output {
2566         self.emit_atomic_rmw(
2567             &arg,
2568             RmwOp::Add,
2569             OperandSize::S16,
2570             Some(Extend::<Zero>::I32Extend16),
2571         )
2572     }
2573 
2574     fn visit_i32_atomic_rmw_add(&mut self, arg: MemArg) -> Self::Output {
2575         self.emit_atomic_rmw(&arg, RmwOp::Add, OperandSize::S32, None)
2576     }
2577 
2578     fn visit_i64_atomic_rmw8_add_u(&mut self, arg: MemArg) -> Self::Output {
2579         self.emit_atomic_rmw(
2580             &arg,
2581             RmwOp::Add,
2582             OperandSize::S8,
2583             Some(Extend::<Zero>::I64Extend8),
2584         )
2585     }
2586 
2587     fn visit_i64_atomic_rmw16_add_u(&mut self, arg: MemArg) -> Self::Output {
2588         self.emit_atomic_rmw(
2589             &arg,
2590             RmwOp::Add,
2591             OperandSize::S16,
2592             Some(Extend::<Zero>::I64Extend16),
2593         )
2594     }
2595 
2596     fn visit_i64_atomic_rmw32_add_u(&mut self, arg: MemArg) -> Self::Output {
2597         self.emit_atomic_rmw(
2598             &arg,
2599             RmwOp::Add,
2600             OperandSize::S32,
2601             Some(Extend::<Zero>::I64Extend32),
2602         )
2603     }
2604 
2605     fn visit_i64_atomic_rmw_add(&mut self, arg: MemArg) -> Self::Output {
2606         self.emit_atomic_rmw(&arg, RmwOp::Add, OperandSize::S64, None)
2607     }
2608 
2609     fn visit_i32_atomic_rmw8_sub_u(&mut self, arg: MemArg) -> Self::Output {
2610         self.emit_atomic_rmw(
2611             &arg,
2612             RmwOp::Sub,
2613             OperandSize::S8,
2614             Some(Extend::<Zero>::I32Extend8),
2615         )
2616     }
2617     fn visit_i32_atomic_rmw16_sub_u(&mut self, arg: MemArg) -> Self::Output {
2618         self.emit_atomic_rmw(
2619             &arg,
2620             RmwOp::Sub,
2621             OperandSize::S16,
2622             Some(Extend::<Zero>::I32Extend16),
2623         )
2624     }
2625 
2626     fn visit_i32_atomic_rmw_sub(&mut self, arg: MemArg) -> Self::Output {
2627         self.emit_atomic_rmw(&arg, RmwOp::Sub, OperandSize::S32, None)
2628     }
2629 
2630     fn visit_i64_atomic_rmw8_sub_u(&mut self, arg: MemArg) -> Self::Output {
2631         self.emit_atomic_rmw(
2632             &arg,
2633             RmwOp::Sub,
2634             OperandSize::S8,
2635             Some(Extend::<Zero>::I64Extend8),
2636         )
2637     }
2638 
2639     fn visit_i64_atomic_rmw16_sub_u(&mut self, arg: MemArg) -> Self::Output {
2640         self.emit_atomic_rmw(
2641             &arg,
2642             RmwOp::Sub,
2643             OperandSize::S16,
2644             Some(Extend::<Zero>::I64Extend16),
2645         )
2646     }
2647 
2648     fn visit_i64_atomic_rmw32_sub_u(&mut self, arg: MemArg) -> Self::Output {
2649         self.emit_atomic_rmw(
2650             &arg,
2651             RmwOp::Sub,
2652             OperandSize::S32,
2653             Some(Extend::<Zero>::I64Extend32),
2654         )
2655     }
2656 
2657     fn visit_i64_atomic_rmw_sub(&mut self, arg: MemArg) -> Self::Output {
2658         self.emit_atomic_rmw(&arg, RmwOp::Sub, OperandSize::S64, None)
2659     }
2660 
2661     fn visit_i32_atomic_rmw8_xchg_u(&mut self, arg: MemArg) -> Self::Output {
2662         self.emit_atomic_rmw(
2663             &arg,
2664             RmwOp::Xchg,
2665             OperandSize::S8,
2666             Some(Extend::<Zero>::I32Extend8),
2667         )
2668     }
2669 
2670     fn visit_i32_atomic_rmw16_xchg_u(&mut self, arg: MemArg) -> Self::Output {
2671         self.emit_atomic_rmw(
2672             &arg,
2673             RmwOp::Xchg,
2674             OperandSize::S16,
2675             Some(Extend::<Zero>::I32Extend16),
2676         )
2677     }
2678 
2679     fn visit_i32_atomic_rmw_xchg(&mut self, arg: MemArg) -> Self::Output {
2680         self.emit_atomic_rmw(&arg, RmwOp::Xchg, OperandSize::S32, None)
2681     }
2682 
2683     fn visit_i64_atomic_rmw8_xchg_u(&mut self, arg: MemArg) -> Self::Output {
2684         self.emit_atomic_rmw(
2685             &arg,
2686             RmwOp::Xchg,
2687             OperandSize::S8,
2688             Some(Extend::<Zero>::I64Extend8),
2689         )
2690     }
2691 
2692     fn visit_i64_atomic_rmw16_xchg_u(&mut self, arg: MemArg) -> Self::Output {
2693         self.emit_atomic_rmw(
2694             &arg,
2695             RmwOp::Xchg,
2696             OperandSize::S16,
2697             Some(Extend::<Zero>::I64Extend16),
2698         )
2699     }
2700 
2701     fn visit_i64_atomic_rmw32_xchg_u(&mut self, arg: MemArg) -> Self::Output {
2702         self.emit_atomic_rmw(
2703             &arg,
2704             RmwOp::Xchg,
2705             OperandSize::S32,
2706             Some(Extend::<Zero>::I64Extend32),
2707         )
2708     }
2709 
2710     fn visit_i64_atomic_rmw_xchg(&mut self, arg: MemArg) -> Self::Output {
2711         self.emit_atomic_rmw(&arg, RmwOp::Xchg, OperandSize::S64, None)
2712     }
2713 
2714     fn visit_i32_atomic_rmw8_and_u(&mut self, arg: MemArg) -> Self::Output {
2715         self.emit_atomic_rmw(
2716             &arg,
2717             RmwOp::And,
2718             OperandSize::S8,
2719             Some(Extend::<Zero>::I32Extend8),
2720         )
2721     }
2722 
2723     fn visit_i32_atomic_rmw16_and_u(&mut self, arg: MemArg) -> Self::Output {
2724         self.emit_atomic_rmw(
2725             &arg,
2726             RmwOp::And,
2727             OperandSize::S16,
2728             Some(Extend::<Zero>::I32Extend16),
2729         )
2730     }
2731 
2732     fn visit_i32_atomic_rmw_and(&mut self, arg: MemArg) -> Self::Output {
2733         self.emit_atomic_rmw(&arg, RmwOp::And, OperandSize::S32, None)
2734     }
2735 
2736     fn visit_i64_atomic_rmw8_and_u(&mut self, arg: MemArg) -> Self::Output {
2737         self.emit_atomic_rmw(
2738             &arg,
2739             RmwOp::And,
2740             OperandSize::S8,
2741             Some(Extend::<Zero>::I64Extend8),
2742         )
2743     }
2744 
2745     fn visit_i64_atomic_rmw16_and_u(&mut self, arg: MemArg) -> Self::Output {
2746         self.emit_atomic_rmw(
2747             &arg,
2748             RmwOp::And,
2749             OperandSize::S16,
2750             Some(Extend::<Zero>::I64Extend16),
2751         )
2752     }
2753 
2754     fn visit_i64_atomic_rmw32_and_u(&mut self, arg: MemArg) -> Self::Output {
2755         self.emit_atomic_rmw(
2756             &arg,
2757             RmwOp::And,
2758             OperandSize::S32,
2759             Some(Extend::<Zero>::I64Extend32),
2760         )
2761     }
2762 
2763     fn visit_i64_atomic_rmw_and(&mut self, arg: MemArg) -> Self::Output {
2764         self.emit_atomic_rmw(&arg, RmwOp::And, OperandSize::S64, None)
2765     }
2766 
2767     fn visit_i32_atomic_rmw8_or_u(&mut self, arg: MemArg) -> Self::Output {
2768         self.emit_atomic_rmw(
2769             &arg,
2770             RmwOp::Or,
2771             OperandSize::S8,
2772             Some(Extend::<Zero>::I32Extend8),
2773         )
2774     }
2775 
2776     fn visit_i32_atomic_rmw16_or_u(&mut self, arg: MemArg) -> Self::Output {
2777         self.emit_atomic_rmw(
2778             &arg,
2779             RmwOp::Or,
2780             OperandSize::S16,
2781             Some(Extend::<Zero>::I32Extend16),
2782         )
2783     }
2784 
2785     fn visit_i32_atomic_rmw_or(&mut self, arg: MemArg) -> Self::Output {
2786         self.emit_atomic_rmw(&arg, RmwOp::Or, OperandSize::S32, None)
2787     }
2788 
2789     fn visit_i64_atomic_rmw8_or_u(&mut self, arg: MemArg) -> Self::Output {
2790         self.emit_atomic_rmw(
2791             &arg,
2792             RmwOp::Or,
2793             OperandSize::S8,
2794             Some(Extend::<Zero>::I64Extend8),
2795         )
2796     }
2797 
2798     fn visit_i64_atomic_rmw16_or_u(&mut self, arg: MemArg) -> Self::Output {
2799         self.emit_atomic_rmw(
2800             &arg,
2801             RmwOp::Or,
2802             OperandSize::S16,
2803             Some(Extend::<Zero>::I64Extend16),
2804         )
2805     }
2806 
2807     fn visit_i64_atomic_rmw32_or_u(&mut self, arg: MemArg) -> Self::Output {
2808         self.emit_atomic_rmw(
2809             &arg,
2810             RmwOp::Or,
2811             OperandSize::S32,
2812             Some(Extend::<Zero>::I64Extend32),
2813         )
2814     }
2815 
2816     fn visit_i64_atomic_rmw_or(&mut self, arg: MemArg) -> Self::Output {
2817         self.emit_atomic_rmw(&arg, RmwOp::Or, OperandSize::S64, None)
2818     }
2819 
2820     fn visit_i32_atomic_rmw8_xor_u(&mut self, arg: MemArg) -> Self::Output {
2821         self.emit_atomic_rmw(
2822             &arg,
2823             RmwOp::Xor,
2824             OperandSize::S8,
2825             Some(Extend::<Zero>::I32Extend8),
2826         )
2827     }
2828 
2829     fn visit_i32_atomic_rmw16_xor_u(&mut self, arg: MemArg) -> Self::Output {
2830         self.emit_atomic_rmw(
2831             &arg,
2832             RmwOp::Xor,
2833             OperandSize::S16,
2834             Some(Extend::<Zero>::I32Extend16),
2835         )
2836     }
2837 
2838     fn visit_i32_atomic_rmw_xor(&mut self, arg: MemArg) -> Self::Output {
2839         self.emit_atomic_rmw(&arg, RmwOp::Xor, OperandSize::S32, None)
2840     }
2841 
2842     fn visit_i64_atomic_rmw8_xor_u(&mut self, arg: MemArg) -> Self::Output {
2843         self.emit_atomic_rmw(
2844             &arg,
2845             RmwOp::Xor,
2846             OperandSize::S8,
2847             Some(Extend::<Zero>::I64Extend8),
2848         )
2849     }
2850 
2851     fn visit_i64_atomic_rmw16_xor_u(&mut self, arg: MemArg) -> Self::Output {
2852         self.emit_atomic_rmw(
2853             &arg,
2854             RmwOp::Xor,
2855             OperandSize::S16,
2856             Some(Extend::<Zero>::I64Extend16),
2857         )
2858     }
2859 
2860     fn visit_i64_atomic_rmw32_xor_u(&mut self, arg: MemArg) -> Self::Output {
2861         self.emit_atomic_rmw(
2862             &arg,
2863             RmwOp::Xor,
2864             OperandSize::S32,
2865             Some(Extend::<Zero>::I64Extend32),
2866         )
2867     }
2868 
2869     fn visit_i64_atomic_rmw_xor(&mut self, arg: MemArg) -> Self::Output {
2870         self.emit_atomic_rmw(&arg, RmwOp::Xor, OperandSize::S64, None)
2871     }
2872 
2873     fn visit_i32_atomic_rmw8_cmpxchg_u(&mut self, arg: MemArg) -> Self::Output {
2874         self.emit_atomic_cmpxchg(&arg, OperandSize::S8, Some(Extend::I32Extend8))
2875     }
2876 
2877     fn visit_i32_atomic_rmw16_cmpxchg_u(&mut self, arg: MemArg) -> Self::Output {
2878         self.emit_atomic_cmpxchg(&arg, OperandSize::S16, Some(Extend::I32Extend16))
2879     }
2880 
2881     fn visit_i32_atomic_rmw_cmpxchg(&mut self, arg: MemArg) -> Self::Output {
2882         self.emit_atomic_cmpxchg(&arg, OperandSize::S32, None)
2883     }
2884 
2885     fn visit_i64_atomic_rmw8_cmpxchg_u(&mut self, arg: MemArg) -> Self::Output {
2886         self.emit_atomic_cmpxchg(&arg, OperandSize::S8, Some(Extend::I64Extend8))
2887     }
2888 
2889     fn visit_i64_atomic_rmw16_cmpxchg_u(&mut self, arg: MemArg) -> Self::Output {
2890         self.emit_atomic_cmpxchg(&arg, OperandSize::S16, Some(Extend::I64Extend16))
2891     }
2892 
2893     fn visit_i64_atomic_rmw32_cmpxchg_u(&mut self, arg: MemArg) -> Self::Output {
2894         self.emit_atomic_cmpxchg(&arg, OperandSize::S32, Some(Extend::I64Extend32))
2895     }
2896 
2897     fn visit_i64_atomic_rmw_cmpxchg(&mut self, arg: MemArg) -> Self::Output {
2898         self.emit_atomic_cmpxchg(&arg, OperandSize::S64, None)
2899     }
2900 
2901     fn visit_memory_atomic_wait32(&mut self, arg: MemArg) -> Self::Output {
2902         self.emit_atomic_wait(&arg, AtomicWaitKind::Wait32)
2903     }
2904 
2905     fn visit_memory_atomic_wait64(&mut self, arg: MemArg) -> Self::Output {
2906         self.emit_atomic_wait(&arg, AtomicWaitKind::Wait64)
2907     }
2908 
2909     fn visit_memory_atomic_notify(&mut self, arg: MemArg) -> Self::Output {
2910         self.emit_atomic_notify(&arg)
2911     }
2912 
2913     fn visit_atomic_fence(&mut self) -> Self::Output {
2914         self.masm.fence()
2915     }
2916 
2917     wasmparser::for_each_visit_operator!(def_unsupported);
2918 }
2919 
2920 impl<'a, 'translation, 'data, M> VisitSimdOperator<'a>
2921     for CodeGen<'a, 'translation, 'data, M, Emission>
2922 where
2923     M: MacroAssembler,
2924 {
2925     fn visit_v128_const(&mut self, val: V128) -> Self::Output {
2926         self.context.stack.push(Val::v128(val.i128()));
2927         Ok(())
2928     }
2929 
2930     fn visit_v128_load(&mut self, memarg: MemArg) -> Self::Output {
2931         self.emit_wasm_load(
2932             &memarg,
2933             WasmValType::V128,
2934             LoadKind::Operand(OperandSize::S128),
2935         )
2936     }
2937 
2938     fn visit_v128_store(&mut self, memarg: MemArg) -> Self::Output {
2939         self.emit_wasm_store(&memarg, StoreKind::Operand(OperandSize::S128))
2940     }
2941 
2942     fn visit_v128_load8x8_s(&mut self, memarg: MemArg) -> Self::Output {
2943         self.emit_wasm_load(
2944             &memarg,
2945             WasmValType::V128,
2946             LoadKind::VectorExtend(V128LoadExtendKind::E8x8S),
2947         )
2948     }
2949 
2950     fn visit_v128_load8x8_u(&mut self, memarg: MemArg) -> Self::Output {
2951         self.emit_wasm_load(
2952             &memarg,
2953             WasmValType::V128,
2954             LoadKind::VectorExtend(V128LoadExtendKind::E8x8U),
2955         )
2956     }
2957 
2958     fn visit_v128_load16x4_s(&mut self, memarg: MemArg) -> Self::Output {
2959         self.emit_wasm_load(
2960             &memarg,
2961             WasmValType::V128,
2962             LoadKind::VectorExtend(V128LoadExtendKind::E16x4S),
2963         )
2964     }
2965 
2966     fn visit_v128_load16x4_u(&mut self, memarg: MemArg) -> Self::Output {
2967         self.emit_wasm_load(
2968             &memarg,
2969             WasmValType::V128,
2970             LoadKind::VectorExtend(V128LoadExtendKind::E16x4U),
2971         )
2972     }
2973 
2974     fn visit_v128_load32x2_s(&mut self, memarg: MemArg) -> Self::Output {
2975         self.emit_wasm_load(
2976             &memarg,
2977             WasmValType::V128,
2978             LoadKind::VectorExtend(V128LoadExtendKind::E32x2S),
2979         )
2980     }
2981 
2982     fn visit_v128_load32x2_u(&mut self, memarg: MemArg) -> Self::Output {
2983         self.emit_wasm_load(
2984             &memarg,
2985             WasmValType::V128,
2986             LoadKind::VectorExtend(V128LoadExtendKind::E32x2U),
2987         )
2988     }
2989 
2990     fn visit_v128_load8_splat(&mut self, memarg: MemArg) -> Self::Output {
2991         self.emit_wasm_load(
2992             &memarg,
2993             WasmValType::V128,
2994             LoadKind::Splat(SplatLoadKind::S8),
2995         )
2996     }
2997 
2998     fn visit_v128_load16_splat(&mut self, memarg: MemArg) -> Self::Output {
2999         self.emit_wasm_load(
3000             &memarg,
3001             WasmValType::V128,
3002             LoadKind::Splat(SplatLoadKind::S16),
3003         )
3004     }
3005 
3006     fn visit_v128_load32_splat(&mut self, memarg: MemArg) -> Self::Output {
3007         self.emit_wasm_load(
3008             &memarg,
3009             WasmValType::V128,
3010             LoadKind::Splat(SplatLoadKind::S32),
3011         )
3012     }
3013 
3014     fn visit_v128_load64_splat(&mut self, memarg: MemArg) -> Self::Output {
3015         self.emit_wasm_load(
3016             &memarg,
3017             WasmValType::V128,
3018             LoadKind::Splat(SplatLoadKind::S64),
3019         )
3020     }
3021 
3022     fn visit_i8x16_splat(&mut self) -> Self::Output {
3023         self.masm.splat(&mut self.context, SplatKind::I8x16)
3024     }
3025 
3026     fn visit_i16x8_splat(&mut self) -> Self::Output {
3027         self.masm.splat(&mut self.context, SplatKind::I16x8)
3028     }
3029 
3030     fn visit_i32x4_splat(&mut self) -> Self::Output {
3031         self.masm.splat(&mut self.context, SplatKind::I32x4)
3032     }
3033 
3034     fn visit_i64x2_splat(&mut self) -> Self::Output {
3035         self.masm.splat(&mut self.context, SplatKind::I64x2)
3036     }
3037 
3038     fn visit_f32x4_splat(&mut self) -> Self::Output {
3039         self.masm.splat(&mut self.context, SplatKind::F32x4)
3040     }
3041 
3042     fn visit_f64x2_splat(&mut self) -> Self::Output {
3043         self.masm.splat(&mut self.context, SplatKind::F64x2)
3044     }
3045 
3046     fn visit_i8x16_shuffle(&mut self, lanes: [u8; 16]) -> Self::Output {
3047         let rhs = self.context.pop_to_reg(self.masm, None)?;
3048         let lhs = self.context.pop_to_reg(self.masm, None)?;
3049         self.masm
3050             .shuffle(writable!(lhs.into()), lhs.into(), rhs.into(), lanes)?;
3051         self.context.stack.push(TypedReg::v128(lhs.into()).into());
3052         self.context.free_reg(rhs);
3053         Ok(())
3054     }
3055 
3056     fn visit_i8x16_swizzle(&mut self) -> Self::Output {
3057         let rhs = self.context.pop_to_reg(self.masm, None)?;
3058         let lhs = self.context.pop_to_reg(self.masm, None)?;
3059         self.masm
3060             .swizzle(writable!(lhs.into()), lhs.into(), rhs.into())?;
3061         self.context.stack.push(TypedReg::v128(lhs.into()).into());
3062         self.context.free_reg(rhs);
3063         Ok(())
3064     }
3065 
3066     fn visit_i8x16_extract_lane_s(&mut self, lane: u8) -> Self::Output {
3067         self.context.extract_lane_op(
3068             self.masm,
3069             ExtractLaneKind::I8x16S,
3070             |masm, src, dst, kind| masm.extract_lane(src, dst, lane, kind),
3071         )
3072     }
3073 
3074     fn visit_i8x16_extract_lane_u(&mut self, lane: u8) -> Self::Output {
3075         self.context.extract_lane_op(
3076             self.masm,
3077             ExtractLaneKind::I8x16U,
3078             |masm, src, dst, kind| masm.extract_lane(src, dst, lane, kind),
3079         )
3080     }
3081 
3082     fn visit_i16x8_extract_lane_s(&mut self, lane: u8) -> Self::Output {
3083         self.context.extract_lane_op(
3084             self.masm,
3085             ExtractLaneKind::I16x8S,
3086             |masm, src, dst, kind| masm.extract_lane(src, dst, lane, kind),
3087         )
3088     }
3089 
3090     fn visit_i16x8_extract_lane_u(&mut self, lane: u8) -> Self::Output {
3091         self.context.extract_lane_op(
3092             self.masm,
3093             ExtractLaneKind::I16x8U,
3094             |masm, src, dst, kind| masm.extract_lane(src, dst, lane, kind),
3095         )
3096     }
3097 
3098     fn visit_i32x4_extract_lane(&mut self, lane: u8) -> Self::Output {
3099         self.context
3100             .extract_lane_op(self.masm, ExtractLaneKind::I32x4, |masm, src, dst, kind| {
3101                 masm.extract_lane(src, dst, lane, kind)
3102             })
3103     }
3104 
3105     fn visit_i64x2_extract_lane(&mut self, lane: u8) -> Self::Output {
3106         self.context
3107             .extract_lane_op(self.masm, ExtractLaneKind::I64x2, |masm, src, dst, kind| {
3108                 masm.extract_lane(src, dst, lane, kind)
3109             })
3110     }
3111 
3112     fn visit_f32x4_extract_lane(&mut self, lane: u8) -> Self::Output {
3113         self.context
3114             .extract_lane_op(self.masm, ExtractLaneKind::F32x4, |masm, src, dst, kind| {
3115                 masm.extract_lane(src, dst, lane, kind)
3116             })
3117     }
3118 
3119     fn visit_f64x2_extract_lane(&mut self, lane: u8) -> Self::Output {
3120         self.context
3121             .extract_lane_op(self.masm, ExtractLaneKind::F64x2, |masm, src, dst, kind| {
3122                 masm.extract_lane(src, dst, lane, kind)
3123             })
3124     }
3125 
3126     fn visit_i8x16_eq(&mut self) -> Self::Output {
3127         self.context
3128             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3129                 masm.v128_eq(writable!(dst), dst, src, VectorEqualityKind::I8x16)?;
3130                 Ok(TypedReg::v128(dst))
3131             })
3132     }
3133 
3134     fn visit_i16x8_eq(&mut self) -> Self::Output {
3135         self.context
3136             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3137                 masm.v128_eq(writable!(dst), dst, src, VectorEqualityKind::I16x8)?;
3138                 Ok(TypedReg::v128(dst))
3139             })
3140     }
3141 
3142     fn visit_i32x4_eq(&mut self) -> Self::Output {
3143         self.context
3144             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3145                 masm.v128_eq(writable!(dst), dst, src, VectorEqualityKind::I32x4)?;
3146                 Ok(TypedReg::v128(dst))
3147             })
3148     }
3149 
3150     fn visit_i64x2_eq(&mut self) -> Self::Output {
3151         self.context
3152             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3153                 masm.v128_eq(writable!(dst), dst, src, VectorEqualityKind::I64x2)?;
3154                 Ok(TypedReg::v128(dst))
3155             })
3156     }
3157 
3158     fn visit_f32x4_eq(&mut self) -> Self::Output {
3159         self.context
3160             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3161                 masm.v128_eq(writable!(dst), dst, src, VectorEqualityKind::F32x4)?;
3162                 Ok(TypedReg::v128(dst))
3163             })
3164     }
3165 
3166     fn visit_f64x2_eq(&mut self) -> Self::Output {
3167         self.context
3168             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3169                 masm.v128_eq(writable!(dst), dst, src, VectorEqualityKind::F64x2)?;
3170                 Ok(TypedReg::v128(dst))
3171             })
3172     }
3173 
3174     fn visit_i8x16_ne(&mut self) -> Self::Output {
3175         self.context
3176             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3177                 masm.v128_ne(writable!(dst), dst, src, VectorEqualityKind::I8x16)?;
3178                 Ok(TypedReg::v128(dst))
3179             })
3180     }
3181 
3182     fn visit_i16x8_ne(&mut self) -> Self::Output {
3183         self.context
3184             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3185                 masm.v128_ne(writable!(dst), dst, src, VectorEqualityKind::I16x8)?;
3186                 Ok(TypedReg::v128(dst))
3187             })
3188     }
3189 
3190     fn visit_i32x4_ne(&mut self) -> Self::Output {
3191         self.context
3192             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3193                 masm.v128_ne(writable!(dst), dst, src, VectorEqualityKind::I32x4)?;
3194                 Ok(TypedReg::v128(dst))
3195             })
3196     }
3197 
3198     fn visit_i64x2_ne(&mut self) -> Self::Output {
3199         self.context
3200             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3201                 masm.v128_ne(writable!(dst), dst, src, VectorEqualityKind::I64x2)?;
3202                 Ok(TypedReg::v128(dst))
3203             })
3204     }
3205 
3206     fn visit_f32x4_ne(&mut self) -> Self::Output {
3207         self.context
3208             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3209                 masm.v128_ne(writable!(dst), dst, src, VectorEqualityKind::F32x4)?;
3210                 Ok(TypedReg::v128(dst))
3211             })
3212     }
3213 
3214     fn visit_f64x2_ne(&mut self) -> Self::Output {
3215         self.context
3216             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3217                 masm.v128_ne(writable!(dst), dst, src, VectorEqualityKind::F64x2)?;
3218                 Ok(TypedReg::v128(dst))
3219             })
3220     }
3221 
3222     fn visit_i8x16_lt_s(&mut self) -> Self::Output {
3223         self.context
3224             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3225                 masm.v128_lt(writable!(dst), dst, src, VectorCompareKind::I8x16S)?;
3226                 Ok(TypedReg::v128(dst))
3227             })
3228     }
3229 
3230     fn visit_i8x16_lt_u(&mut self) -> Self::Output {
3231         self.context
3232             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3233                 masm.v128_lt(writable!(dst), dst, src, VectorCompareKind::I8x16U)?;
3234                 Ok(TypedReg::v128(dst))
3235             })
3236     }
3237 
3238     fn visit_i16x8_lt_s(&mut self) -> Self::Output {
3239         self.context
3240             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3241                 masm.v128_lt(writable!(dst), dst, src, VectorCompareKind::I16x8S)?;
3242                 Ok(TypedReg::v128(dst))
3243             })
3244     }
3245 
3246     fn visit_i16x8_lt_u(&mut self) -> Self::Output {
3247         self.context
3248             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3249                 masm.v128_lt(writable!(dst), dst, src, VectorCompareKind::I16x8U)?;
3250                 Ok(TypedReg::v128(dst))
3251             })
3252     }
3253 
3254     fn visit_i32x4_lt_s(&mut self) -> Self::Output {
3255         self.context
3256             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3257                 masm.v128_lt(writable!(dst), dst, src, VectorCompareKind::I32x4S)?;
3258                 Ok(TypedReg::v128(dst))
3259             })
3260     }
3261 
3262     fn visit_i32x4_lt_u(&mut self) -> Self::Output {
3263         self.context
3264             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3265                 masm.v128_lt(writable!(dst), dst, src, VectorCompareKind::I32x4U)?;
3266                 Ok(TypedReg::v128(dst))
3267             })
3268     }
3269 
3270     fn visit_i64x2_lt_s(&mut self) -> Self::Output {
3271         self.context
3272             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3273                 masm.v128_lt(writable!(dst), dst, src, VectorCompareKind::I64x2S)?;
3274                 Ok(TypedReg::v128(dst))
3275             })
3276     }
3277 
3278     fn visit_f32x4_lt(&mut self) -> Self::Output {
3279         self.context
3280             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3281                 masm.v128_lt(writable!(dst), dst, src, VectorCompareKind::F32x4)?;
3282                 Ok(TypedReg::v128(dst))
3283             })
3284     }
3285 
3286     fn visit_f64x2_lt(&mut self) -> Self::Output {
3287         self.context
3288             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3289                 masm.v128_lt(writable!(dst), dst, src, VectorCompareKind::F64x2)?;
3290                 Ok(TypedReg::v128(dst))
3291             })
3292     }
3293 
3294     fn visit_i8x16_le_s(&mut self) -> Self::Output {
3295         self.context
3296             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3297                 masm.v128_le(writable!(dst), dst, src, VectorCompareKind::I8x16S)?;
3298                 Ok(TypedReg::v128(dst))
3299             })
3300     }
3301 
3302     fn visit_i8x16_le_u(&mut self) -> Self::Output {
3303         self.context
3304             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3305                 masm.v128_le(writable!(dst), dst, src, VectorCompareKind::I8x16U)?;
3306                 Ok(TypedReg::v128(dst))
3307             })
3308     }
3309 
3310     fn visit_i16x8_le_s(&mut self) -> Self::Output {
3311         self.context
3312             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3313                 masm.v128_le(writable!(dst), dst, src, VectorCompareKind::I16x8S)?;
3314                 Ok(TypedReg::v128(dst))
3315             })
3316     }
3317 
3318     fn visit_i16x8_le_u(&mut self) -> Self::Output {
3319         self.context
3320             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3321                 masm.v128_le(writable!(dst), dst, src, VectorCompareKind::I16x8U)?;
3322                 Ok(TypedReg::v128(dst))
3323             })
3324     }
3325 
3326     fn visit_i32x4_le_s(&mut self) -> Self::Output {
3327         self.context
3328             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3329                 masm.v128_le(writable!(dst), dst, src, VectorCompareKind::I32x4S)?;
3330                 Ok(TypedReg::v128(dst))
3331             })
3332     }
3333 
3334     fn visit_i32x4_le_u(&mut self) -> Self::Output {
3335         self.context
3336             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3337                 masm.v128_le(writable!(dst), dst, src, VectorCompareKind::I32x4U)?;
3338                 Ok(TypedReg::v128(dst))
3339             })
3340     }
3341 
3342     fn visit_i64x2_le_s(&mut self) -> Self::Output {
3343         self.context
3344             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3345                 masm.v128_le(writable!(dst), dst, src, VectorCompareKind::I64x2S)?;
3346                 Ok(TypedReg::v128(dst))
3347             })
3348     }
3349 
3350     fn visit_f32x4_le(&mut self) -> Self::Output {
3351         self.context
3352             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3353                 masm.v128_le(writable!(dst), dst, src, VectorCompareKind::F32x4)?;
3354                 Ok(TypedReg::v128(dst))
3355             })
3356     }
3357 
3358     fn visit_f64x2_le(&mut self) -> Self::Output {
3359         self.context
3360             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3361                 masm.v128_le(writable!(dst), dst, src, VectorCompareKind::F64x2)?;
3362                 Ok(TypedReg::v128(dst))
3363             })
3364     }
3365 
3366     fn visit_i8x16_gt_s(&mut self) -> Self::Output {
3367         self.context
3368             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3369                 masm.v128_gt(writable!(dst), dst, src, VectorCompareKind::I8x16S)?;
3370                 Ok(TypedReg::v128(dst))
3371             })
3372     }
3373 
3374     fn visit_i8x16_gt_u(&mut self) -> Self::Output {
3375         self.context
3376             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3377                 masm.v128_gt(writable!(dst), dst, src, VectorCompareKind::I8x16U)?;
3378                 Ok(TypedReg::v128(dst))
3379             })
3380     }
3381 
3382     fn visit_i16x8_gt_s(&mut self) -> Self::Output {
3383         self.context
3384             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3385                 masm.v128_gt(writable!(dst), dst, src, VectorCompareKind::I16x8S)?;
3386                 Ok(TypedReg::v128(dst))
3387             })
3388     }
3389 
3390     fn visit_i16x8_gt_u(&mut self) -> Self::Output {
3391         self.context
3392             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3393                 masm.v128_gt(writable!(dst), dst, src, VectorCompareKind::I16x8U)?;
3394                 Ok(TypedReg::v128(dst))
3395             })
3396     }
3397 
3398     fn visit_i32x4_gt_s(&mut self) -> Self::Output {
3399         self.context
3400             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3401                 masm.v128_gt(writable!(dst), dst, src, VectorCompareKind::I32x4S)?;
3402                 Ok(TypedReg::v128(dst))
3403             })
3404     }
3405 
3406     fn visit_i32x4_gt_u(&mut self) -> Self::Output {
3407         self.context
3408             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3409                 masm.v128_gt(writable!(dst), dst, src, VectorCompareKind::I32x4U)?;
3410                 Ok(TypedReg::v128(dst))
3411             })
3412     }
3413 
3414     fn visit_i64x2_gt_s(&mut self) -> Self::Output {
3415         self.context
3416             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3417                 masm.v128_gt(writable!(dst), dst, src, VectorCompareKind::I64x2S)?;
3418                 Ok(TypedReg::v128(dst))
3419             })
3420     }
3421 
3422     fn visit_f32x4_gt(&mut self) -> Self::Output {
3423         self.context
3424             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3425                 masm.v128_gt(writable!(dst), dst, src, VectorCompareKind::F32x4)?;
3426                 Ok(TypedReg::v128(dst))
3427             })
3428     }
3429 
3430     fn visit_f64x2_gt(&mut self) -> Self::Output {
3431         self.context
3432             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3433                 masm.v128_gt(writable!(dst), dst, src, VectorCompareKind::F64x2)?;
3434                 Ok(TypedReg::v128(dst))
3435             })
3436     }
3437 
3438     fn visit_i8x16_ge_s(&mut self) -> Self::Output {
3439         self.context
3440             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3441                 masm.v128_ge(writable!(dst), dst, src, VectorCompareKind::I8x16S)?;
3442                 Ok(TypedReg::v128(dst))
3443             })
3444     }
3445 
3446     fn visit_i8x16_ge_u(&mut self) -> Self::Output {
3447         self.context
3448             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3449                 masm.v128_ge(writable!(dst), dst, src, VectorCompareKind::I8x16U)?;
3450                 Ok(TypedReg::v128(dst))
3451             })
3452     }
3453 
3454     fn visit_i16x8_ge_s(&mut self) -> Self::Output {
3455         self.context
3456             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3457                 masm.v128_ge(writable!(dst), dst, src, VectorCompareKind::I16x8S)?;
3458                 Ok(TypedReg::v128(dst))
3459             })
3460     }
3461 
3462     fn visit_i16x8_ge_u(&mut self) -> Self::Output {
3463         self.context
3464             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3465                 masm.v128_ge(writable!(dst), dst, src, VectorCompareKind::I16x8U)?;
3466                 Ok(TypedReg::v128(dst))
3467             })
3468     }
3469 
3470     fn visit_i32x4_ge_s(&mut self) -> Self::Output {
3471         self.context
3472             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3473                 masm.v128_ge(writable!(dst), dst, src, VectorCompareKind::I32x4S)?;
3474                 Ok(TypedReg::v128(dst))
3475             })
3476     }
3477 
3478     fn visit_i32x4_ge_u(&mut self) -> Self::Output {
3479         self.context
3480             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3481                 masm.v128_ge(writable!(dst), dst, src, VectorCompareKind::I32x4U)?;
3482                 Ok(TypedReg::v128(dst))
3483             })
3484     }
3485 
3486     fn visit_i64x2_ge_s(&mut self) -> Self::Output {
3487         self.context
3488             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3489                 masm.v128_ge(writable!(dst), dst, src, VectorCompareKind::I64x2S)?;
3490                 Ok(TypedReg::v128(dst))
3491             })
3492     }
3493 
3494     fn visit_f32x4_ge(&mut self) -> Self::Output {
3495         self.context
3496             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3497                 masm.v128_ge(writable!(dst), dst, src, VectorCompareKind::F32x4)?;
3498                 Ok(TypedReg::v128(dst))
3499             })
3500     }
3501 
3502     fn visit_f64x2_ge(&mut self) -> Self::Output {
3503         self.context
3504             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3505                 masm.v128_ge(writable!(dst), dst, src, VectorCompareKind::F64x2)?;
3506                 Ok(TypedReg::v128(dst))
3507             })
3508     }
3509 
3510     fn visit_i8x16_replace_lane(&mut self, lane: u8) -> Self::Output {
3511         self.context
3512             .replace_lane_op(self.masm, ReplaceLaneKind::I8x16, |masm, src, dst, kind| {
3513                 masm.replace_lane(src, dst, lane, kind)
3514             })
3515     }
3516 
3517     fn visit_i16x8_replace_lane(&mut self, lane: u8) -> Self::Output {
3518         self.context
3519             .replace_lane_op(self.masm, ReplaceLaneKind::I16x8, |masm, src, dst, kind| {
3520                 masm.replace_lane(src, dst, lane, kind)
3521             })
3522     }
3523 
3524     fn visit_i32x4_replace_lane(&mut self, lane: u8) -> Self::Output {
3525         self.context
3526             .replace_lane_op(self.masm, ReplaceLaneKind::I32x4, |masm, src, dst, kind| {
3527                 masm.replace_lane(src, dst, lane, kind)
3528             })
3529     }
3530 
3531     fn visit_i64x2_replace_lane(&mut self, lane: u8) -> Self::Output {
3532         self.context
3533             .replace_lane_op(self.masm, ReplaceLaneKind::I64x2, |masm, src, dst, kind| {
3534                 masm.replace_lane(src, dst, lane, kind)
3535             })
3536     }
3537 
3538     fn visit_f32x4_replace_lane(&mut self, lane: u8) -> Self::Output {
3539         self.context
3540             .replace_lane_op(self.masm, ReplaceLaneKind::F32x4, |masm, src, dst, kind| {
3541                 masm.replace_lane(src, dst, lane, kind)
3542             })
3543     }
3544 
3545     fn visit_f64x2_replace_lane(&mut self, lane: u8) -> Self::Output {
3546         self.context
3547             .replace_lane_op(self.masm, ReplaceLaneKind::F64x2, |masm, src, dst, kind| {
3548                 masm.replace_lane(src, dst, lane, kind)
3549             })
3550     }
3551 
3552     fn visit_v128_not(&mut self) -> Self::Output {
3553         self.context.unop(self.masm, |masm, reg| {
3554             masm.v128_not(writable!(reg))?;
3555             Ok(TypedReg::new(WasmValType::V128, reg))
3556         })
3557     }
3558 
3559     fn visit_v128_and(&mut self) -> Self::Output {
3560         self.context
3561             .binop(self.masm, OperandSize::S128, |masm, dst, src, _size| {
3562                 masm.v128_and(dst, src, writable!(dst))?;
3563                 Ok(TypedReg::new(WasmValType::V128, dst))
3564             })
3565     }
3566 
3567     fn visit_v128_andnot(&mut self) -> Self::Output {
3568         self.context
3569             .binop(self.masm, OperandSize::S128, |masm, dst, src, _size| {
3570                 // careful here: and_not is *not* commutative: dst = !src1 & src2
3571                 masm.v128_and_not(src, dst, writable!(dst))?;
3572                 Ok(TypedReg::new(WasmValType::V128, dst))
3573             })
3574     }
3575 
3576     fn visit_v128_or(&mut self) -> Self::Output {
3577         self.context
3578             .binop(self.masm, OperandSize::S128, |masm, dst, src, _size| {
3579                 // careful here: and_not is *not* commutative: dst = !src1 & src2
3580                 masm.v128_or(src, dst, writable!(dst))?;
3581                 Ok(TypedReg::new(WasmValType::V128, dst))
3582             })
3583     }
3584 
3585     fn visit_v128_xor(&mut self) -> Self::Output {
3586         self.context
3587             .binop(self.masm, OperandSize::S128, |masm, dst, src, _size| {
3588                 // careful here: and_not is *not* commutative: dst = !src1 & src2
3589                 masm.v128_xor(src, dst, writable!(dst))?;
3590                 Ok(TypedReg::new(WasmValType::V128, dst))
3591             })
3592     }
3593 
3594     fn visit_v128_bitselect(&mut self) -> Self::Output {
3595         let mask = self.context.pop_to_reg(self.masm, None)?;
3596         let op2 = self.context.pop_to_reg(self.masm, None)?;
3597         let op1 = self.context.pop_to_reg(self.masm, None)?;
3598         let dst = self.context.any_fpr(self.masm)?;
3599 
3600         // careful here: bitselect is *not* commutative.
3601         self.masm
3602             .v128_bitselect(op1.reg, op2.reg, mask.reg, writable!(dst))?;
3603 
3604         self.context
3605             .stack
3606             .push(TypedReg::new(WasmValType::V128, dst).into());
3607         self.context.free_reg(op1);
3608         self.context.free_reg(op2);
3609         self.context.free_reg(mask);
3610 
3611         Ok(())
3612     }
3613 
3614     fn visit_v128_any_true(&mut self) -> Self::Output {
3615         let src = self.context.pop_to_reg(self.masm, None)?;
3616         let dst = self.context.any_gpr(self.masm)?;
3617 
3618         self.masm.v128_any_true(src.reg, writable!(dst))?;
3619 
3620         self.context
3621             .stack
3622             .push(TypedReg::new(WasmValType::I32, dst).into());
3623         self.context.free_reg(src);
3624 
3625         Ok(())
3626     }
3627 
3628     fn visit_v128_load8_lane(&mut self, arg: MemArg, lane: u8) -> Self::Output {
3629         self.emit_wasm_load(
3630             &arg,
3631             WasmValType::V128,
3632             LoadKind::vector_lane(lane, OperandSize::S8),
3633         )
3634     }
3635 
3636     fn visit_v128_load16_lane(&mut self, arg: MemArg, lane: u8) -> Self::Output {
3637         self.emit_wasm_load(
3638             &arg,
3639             WasmValType::V128,
3640             LoadKind::vector_lane(lane, OperandSize::S16),
3641         )
3642     }
3643 
3644     fn visit_v128_load32_lane(&mut self, arg: MemArg, lane: u8) -> Self::Output {
3645         self.emit_wasm_load(
3646             &arg,
3647             WasmValType::V128,
3648             LoadKind::vector_lane(lane, OperandSize::S32),
3649         )
3650     }
3651 
3652     fn visit_v128_load64_lane(&mut self, arg: MemArg, lane: u8) -> Self::Output {
3653         self.emit_wasm_load(
3654             &arg,
3655             WasmValType::V128,
3656             LoadKind::vector_lane(lane, OperandSize::S64),
3657         )
3658     }
3659 
3660     fn visit_v128_store8_lane(&mut self, arg: MemArg, lane: u8) -> Self::Output {
3661         self.emit_wasm_store(&arg, StoreKind::vector_lane(lane, OperandSize::S8))
3662     }
3663 
3664     fn visit_v128_store16_lane(&mut self, arg: MemArg, lane: u8) -> Self::Output {
3665         self.emit_wasm_store(&arg, StoreKind::vector_lane(lane, OperandSize::S16))
3666     }
3667 
3668     fn visit_v128_store32_lane(&mut self, arg: MemArg, lane: u8) -> Self::Output {
3669         self.emit_wasm_store(&arg, StoreKind::vector_lane(lane, OperandSize::S32))
3670     }
3671 
3672     fn visit_v128_store64_lane(&mut self, arg: MemArg, lane: u8) -> Self::Output {
3673         self.emit_wasm_store(&arg, StoreKind::vector_lane(lane, OperandSize::S64))
3674     }
3675 
3676     fn visit_f32x4_convert_i32x4_s(&mut self) -> Self::Output {
3677         self.context.unop(self.masm, |masm, reg| {
3678             masm.v128_convert(reg, writable!(reg), V128ConvertKind::I32x4S)?;
3679             Ok(TypedReg::v128(reg))
3680         })
3681     }
3682 
3683     fn visit_f32x4_convert_i32x4_u(&mut self) -> Self::Output {
3684         self.context.unop(self.masm, |masm, reg| {
3685             masm.v128_convert(reg, writable!(reg), V128ConvertKind::I32x4U)?;
3686             Ok(TypedReg::v128(reg))
3687         })
3688     }
3689 
3690     fn visit_f64x2_convert_low_i32x4_s(&mut self) -> Self::Output {
3691         self.context.unop(self.masm, |masm, reg| {
3692             masm.v128_convert(reg, writable!(reg), V128ConvertKind::I32x4LowS)?;
3693             Ok(TypedReg::v128(reg))
3694         })
3695     }
3696 
3697     fn visit_f64x2_convert_low_i32x4_u(&mut self) -> Self::Output {
3698         self.context.unop(self.masm, |masm, reg| {
3699             masm.v128_convert(reg, writable!(reg), V128ConvertKind::I32x4LowU)?;
3700             Ok(TypedReg::v128(reg))
3701         })
3702     }
3703 
3704     fn visit_i8x16_narrow_i16x8_s(&mut self) -> Self::Output {
3705         self.context
3706             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3707                 masm.v128_narrow(dst, src, writable!(dst), V128NarrowKind::I16x8S)?;
3708                 Ok(TypedReg::v128(dst))
3709             })
3710     }
3711 
3712     fn visit_i8x16_narrow_i16x8_u(&mut self) -> Self::Output {
3713         self.context
3714             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3715                 masm.v128_narrow(dst, src, writable!(dst), V128NarrowKind::I16x8U)?;
3716                 Ok(TypedReg::v128(dst))
3717             })
3718     }
3719 
3720     fn visit_i16x8_narrow_i32x4_s(&mut self) -> Self::Output {
3721         self.context
3722             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3723                 masm.v128_narrow(dst, src, writable!(dst), V128NarrowKind::I32x4S)?;
3724                 Ok(TypedReg::v128(dst))
3725             })
3726     }
3727 
3728     fn visit_i16x8_narrow_i32x4_u(&mut self) -> Self::Output {
3729         self.context
3730             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3731                 masm.v128_narrow(dst, src, writable!(dst), V128NarrowKind::I32x4U)?;
3732                 Ok(TypedReg::v128(dst))
3733             })
3734     }
3735 
3736     fn visit_f32x4_demote_f64x2_zero(&mut self) -> Self::Output {
3737         self.context.unop(self.masm, |masm, reg| {
3738             masm.v128_demote(reg, writable!(reg))?;
3739             Ok(TypedReg::v128(reg))
3740         })
3741     }
3742 
3743     fn visit_f64x2_promote_low_f32x4(&mut self) -> Self::Output {
3744         self.context.unop(self.masm, |masm, reg| {
3745             masm.v128_promote(reg, writable!(reg))?;
3746             Ok(TypedReg::v128(reg))
3747         })
3748     }
3749 
3750     fn visit_i16x8_extend_low_i8x16_s(&mut self) -> Self::Output {
3751         self.context.unop(self.masm, |masm, reg| {
3752             masm.v128_extend(reg, writable!(reg), V128ExtendKind::LowI8x16S)?;
3753             Ok(TypedReg::v128(reg))
3754         })
3755     }
3756 
3757     fn visit_i16x8_extend_high_i8x16_s(&mut self) -> Self::Output {
3758         self.context.unop(self.masm, |masm, reg| {
3759             masm.v128_extend(reg, writable!(reg), V128ExtendKind::HighI8x16S)?;
3760             Ok(TypedReg::v128(reg))
3761         })
3762     }
3763 
3764     fn visit_i16x8_extend_low_i8x16_u(&mut self) -> Self::Output {
3765         self.context.unop(self.masm, |masm, reg| {
3766             masm.v128_extend(reg, writable!(reg), V128ExtendKind::LowI8x16U)?;
3767             Ok(TypedReg::v128(reg))
3768         })
3769     }
3770 
3771     fn visit_i16x8_extend_high_i8x16_u(&mut self) -> Self::Output {
3772         self.context.unop(self.masm, |masm, reg| {
3773             masm.v128_extend(reg, writable!(reg), V128ExtendKind::HighI8x16U)?;
3774             Ok(TypedReg::v128(reg))
3775         })
3776     }
3777 
3778     fn visit_i32x4_extend_low_i16x8_s(&mut self) -> Self::Output {
3779         self.context.unop(self.masm, |masm, reg| {
3780             masm.v128_extend(reg, writable!(reg), V128ExtendKind::LowI16x8S)?;
3781             Ok(TypedReg::v128(reg))
3782         })
3783     }
3784 
3785     fn visit_i32x4_extend_high_i16x8_s(&mut self) -> Self::Output {
3786         self.context.unop(self.masm, |masm, reg| {
3787             masm.v128_extend(reg, writable!(reg), V128ExtendKind::HighI16x8S)?;
3788             Ok(TypedReg::v128(reg))
3789         })
3790     }
3791 
3792     fn visit_i32x4_extend_low_i16x8_u(&mut self) -> Self::Output {
3793         self.context.unop(self.masm, |masm, reg| {
3794             masm.v128_extend(reg, writable!(reg), V128ExtendKind::LowI16x8U)?;
3795             Ok(TypedReg::v128(reg))
3796         })
3797     }
3798 
3799     fn visit_i32x4_extend_high_i16x8_u(&mut self) -> Self::Output {
3800         self.context.unop(self.masm, |masm, reg| {
3801             masm.v128_extend(reg, writable!(reg), V128ExtendKind::HighI16x8U)?;
3802             Ok(TypedReg::v128(reg))
3803         })
3804     }
3805 
3806     fn visit_i64x2_extend_low_i32x4_s(&mut self) -> Self::Output {
3807         self.context.unop(self.masm, |masm, reg| {
3808             masm.v128_extend(reg, writable!(reg), V128ExtendKind::LowI32x4S)?;
3809             Ok(TypedReg::v128(reg))
3810         })
3811     }
3812 
3813     fn visit_i64x2_extend_high_i32x4_s(&mut self) -> Self::Output {
3814         self.context.unop(self.masm, |masm, reg| {
3815             masm.v128_extend(reg, writable!(reg), V128ExtendKind::HighI32x4S)?;
3816             Ok(TypedReg::v128(reg))
3817         })
3818     }
3819 
3820     fn visit_i64x2_extend_low_i32x4_u(&mut self) -> Self::Output {
3821         self.context.unop(self.masm, |masm, reg| {
3822             masm.v128_extend(reg, writable!(reg), V128ExtendKind::LowI32x4U)?;
3823             Ok(TypedReg::v128(reg))
3824         })
3825     }
3826 
3827     fn visit_i64x2_extend_high_i32x4_u(&mut self) -> Self::Output {
3828         self.context.unop(self.masm, |masm, reg| {
3829             masm.v128_extend(reg, writable!(reg), V128ExtendKind::HighI32x4U)?;
3830             Ok(TypedReg::v128(reg))
3831         })
3832     }
3833 
3834     fn visit_i8x16_add(&mut self) -> Self::Output {
3835         self.context
3836             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3837                 masm.v128_add(dst, src, writable!(dst), V128AddKind::I8x16)?;
3838                 Ok(TypedReg::new(WasmValType::V128, dst))
3839             })
3840     }
3841 
3842     fn visit_i16x8_add(&mut self) -> Self::Output {
3843         self.context
3844             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3845                 masm.v128_add(dst, src, writable!(dst), V128AddKind::I16x8)?;
3846                 Ok(TypedReg::new(WasmValType::V128, dst))
3847             })
3848     }
3849 
3850     fn visit_i32x4_add(&mut self) -> Self::Output {
3851         self.context
3852             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3853                 masm.v128_add(dst, src, writable!(dst), V128AddKind::I32x4)?;
3854                 Ok(TypedReg::new(WasmValType::V128, dst))
3855             })
3856     }
3857 
3858     fn visit_i64x2_add(&mut self) -> Self::Output {
3859         self.context
3860             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3861                 masm.v128_add(dst, src, writable!(dst), V128AddKind::I64x2)?;
3862                 Ok(TypedReg::new(WasmValType::V128, dst))
3863             })
3864     }
3865 
3866     fn visit_i8x16_sub(&mut self) -> Self::Output {
3867         self.context
3868             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3869                 masm.v128_sub(dst, src, writable!(dst), V128SubKind::I8x16)?;
3870                 Ok(TypedReg::new(WasmValType::V128, dst))
3871             })
3872     }
3873 
3874     fn visit_i16x8_sub(&mut self) -> Self::Output {
3875         self.context
3876             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3877                 masm.v128_sub(dst, src, writable!(dst), V128SubKind::I16x8)?;
3878                 Ok(TypedReg::new(WasmValType::V128, dst))
3879             })
3880     }
3881 
3882     fn visit_i32x4_sub(&mut self) -> Self::Output {
3883         self.context
3884             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
3885                 masm.v128_sub(dst, src, writable!(dst), V128SubKind::I32x4)?;
3886                 Ok(TypedReg::new(WasmValType::V128, dst))
3887             })
3888     }
3889 
3890     fn visit_i64x2_sub(&mut self) -> Self::Output {
3891         self.context
3892             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
3893                 masm.v128_sub(dst, src, writable!(dst), V128SubKind::I64x2)?;
3894                 Ok(TypedReg::new(WasmValType::V128, dst))
3895             })
3896     }
3897 
3898     fn visit_i16x8_mul(&mut self) -> Self::Output {
3899         self.masm.v128_mul(&mut self.context, V128MulKind::I16x8)
3900     }
3901 
3902     fn visit_i32x4_mul(&mut self) -> Self::Output {
3903         self.masm.v128_mul(&mut self.context, V128MulKind::I32x4)
3904     }
3905 
3906     fn visit_i64x2_mul(&mut self) -> Self::Output {
3907         self.masm.v128_mul(&mut self.context, V128MulKind::I64x2)
3908     }
3909 
3910     fn visit_i8x16_add_sat_s(&mut self) -> Self::Output {
3911         self.context
3912             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3913                 masm.v128_add(dst, src, writable!(dst), V128AddKind::I8x16SatS)?;
3914                 Ok(TypedReg::new(WasmValType::V128, dst))
3915             })
3916     }
3917 
3918     fn visit_i16x8_add_sat_s(&mut self) -> Self::Output {
3919         self.context
3920             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3921                 masm.v128_add(dst, src, writable!(dst), V128AddKind::I16x8SatS)?;
3922                 Ok(TypedReg::new(WasmValType::V128, dst))
3923             })
3924     }
3925 
3926     fn visit_i8x16_add_sat_u(&mut self) -> Self::Output {
3927         self.context
3928             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3929                 masm.v128_add(dst, src, writable!(dst), V128AddKind::I8x16SatU)?;
3930                 Ok(TypedReg::new(WasmValType::V128, dst))
3931             })
3932     }
3933 
3934     fn visit_i16x8_add_sat_u(&mut self) -> Self::Output {
3935         self.context
3936             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3937                 masm.v128_add(dst, src, writable!(dst), V128AddKind::I16x8SatU)?;
3938                 Ok(TypedReg::new(WasmValType::V128, dst))
3939             })
3940     }
3941 
3942     fn visit_i8x16_sub_sat_s(&mut self) -> Self::Output {
3943         self.context
3944             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3945                 masm.v128_sub(dst, src, writable!(dst), V128SubKind::I8x16SatS)?;
3946                 Ok(TypedReg::new(WasmValType::V128, dst))
3947             })
3948     }
3949 
3950     fn visit_i16x8_sub_sat_s(&mut self) -> Self::Output {
3951         self.context
3952             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3953                 masm.v128_sub(dst, src, writable!(dst), V128SubKind::I16x8SatS)?;
3954                 Ok(TypedReg::new(WasmValType::V128, dst))
3955             })
3956     }
3957 
3958     fn visit_i8x16_sub_sat_u(&mut self) -> Self::Output {
3959         self.context
3960             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
3961                 masm.v128_sub(dst, src, writable!(dst), V128SubKind::I8x16SatU)?;
3962                 Ok(TypedReg::new(WasmValType::V128, dst))
3963             })
3964     }
3965 
3966     fn visit_i16x8_sub_sat_u(&mut self) -> Self::Output {
3967         self.context
3968             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
3969                 masm.v128_sub(dst, src, writable!(dst), V128SubKind::I16x8SatU)?;
3970                 Ok(TypedReg::new(WasmValType::V128, dst))
3971             })
3972     }
3973 
3974     fn visit_i8x16_abs(&mut self) -> Self::Output {
3975         self.context.unop(self.masm, |masm, reg| {
3976             masm.v128_abs(reg, writable!(reg), V128AbsKind::I8x16)?;
3977             Ok(TypedReg::new(WasmValType::V128, reg))
3978         })
3979     }
3980 
3981     fn visit_i16x8_abs(&mut self) -> Self::Output {
3982         self.context.unop(self.masm, |masm, reg| {
3983             masm.v128_abs(reg, writable!(reg), V128AbsKind::I16x8)?;
3984             Ok(TypedReg::new(WasmValType::V128, reg))
3985         })
3986     }
3987 
3988     fn visit_i32x4_abs(&mut self) -> Self::Output {
3989         self.context.unop(self.masm, |masm, reg| {
3990             masm.v128_abs(reg, writable!(reg), V128AbsKind::I32x4)?;
3991             Ok(TypedReg::new(WasmValType::V128, reg))
3992         })
3993     }
3994 
3995     fn visit_i64x2_abs(&mut self) -> Self::Output {
3996         self.context.unop(self.masm, |masm, reg| {
3997             masm.v128_abs(reg, writable!(reg), V128AbsKind::I64x2)?;
3998             Ok(TypedReg::new(WasmValType::V128, reg))
3999         })
4000     }
4001 
4002     fn visit_f32x4_abs(&mut self) -> Self::Output {
4003         self.context.unop(self.masm, |masm, reg| {
4004             masm.v128_abs(reg, writable!(reg), V128AbsKind::F32x4)?;
4005             Ok(TypedReg::new(WasmValType::V128, reg))
4006         })
4007     }
4008 
4009     fn visit_f64x2_abs(&mut self) -> Self::Output {
4010         self.context.unop(self.masm, |masm, reg| {
4011             masm.v128_abs(reg, writable!(reg), V128AbsKind::F64x2)?;
4012             Ok(TypedReg::new(WasmValType::V128, reg))
4013         })
4014     }
4015 
4016     fn visit_i8x16_neg(&mut self) -> Self::Output {
4017         self.context.unop(self.masm, |masm, op| {
4018             masm.v128_neg(writable!(op), V128NegKind::I8x16)?;
4019             Ok(TypedReg::new(WasmValType::V128, op))
4020         })
4021     }
4022 
4023     fn visit_i16x8_neg(&mut self) -> Self::Output {
4024         self.context.unop(self.masm, |masm, op| {
4025             masm.v128_neg(writable!(op), V128NegKind::I16x8)?;
4026             Ok(TypedReg::new(WasmValType::V128, op))
4027         })
4028     }
4029 
4030     fn visit_i32x4_neg(&mut self) -> Self::Output {
4031         self.context.unop(self.masm, |masm, op| {
4032             masm.v128_neg(writable!(op), V128NegKind::I32x4)?;
4033             Ok(TypedReg::new(WasmValType::V128, op))
4034         })
4035     }
4036 
4037     fn visit_i64x2_neg(&mut self) -> Self::Output {
4038         self.context.unop(self.masm, |masm, op| {
4039             masm.v128_neg(writable!(op), V128NegKind::I64x2)?;
4040             Ok(TypedReg::new(WasmValType::V128, op))
4041         })
4042     }
4043 
4044     fn visit_i8x16_shl(&mut self) -> Self::Output {
4045         self.masm
4046             .v128_shift(&mut self.context, OperandSize::S8, ShiftKind::Shl)
4047     }
4048 
4049     fn visit_i16x8_shl(&mut self) -> Self::Output {
4050         self.masm
4051             .v128_shift(&mut self.context, OperandSize::S16, ShiftKind::Shl)
4052     }
4053 
4054     fn visit_i32x4_shl(&mut self) -> Self::Output {
4055         self.masm
4056             .v128_shift(&mut self.context, OperandSize::S32, ShiftKind::Shl)
4057     }
4058 
4059     fn visit_i64x2_shl(&mut self) -> Self::Output {
4060         self.masm
4061             .v128_shift(&mut self.context, OperandSize::S64, ShiftKind::Shl)
4062     }
4063 
4064     fn visit_i8x16_shr_u(&mut self) -> Self::Output {
4065         self.masm
4066             .v128_shift(&mut self.context, OperandSize::S8, ShiftKind::ShrU)
4067     }
4068 
4069     fn visit_i16x8_shr_u(&mut self) -> Self::Output {
4070         self.masm
4071             .v128_shift(&mut self.context, OperandSize::S16, ShiftKind::ShrU)
4072     }
4073 
4074     fn visit_i32x4_shr_u(&mut self) -> Self::Output {
4075         self.masm
4076             .v128_shift(&mut self.context, OperandSize::S32, ShiftKind::ShrU)
4077     }
4078 
4079     fn visit_i64x2_shr_u(&mut self) -> Self::Output {
4080         self.masm
4081             .v128_shift(&mut self.context, OperandSize::S64, ShiftKind::ShrU)
4082     }
4083 
4084     fn visit_i8x16_shr_s(&mut self) -> Self::Output {
4085         self.masm
4086             .v128_shift(&mut self.context, OperandSize::S8, ShiftKind::ShrS)
4087     }
4088 
4089     fn visit_i16x8_shr_s(&mut self) -> Self::Output {
4090         self.masm
4091             .v128_shift(&mut self.context, OperandSize::S16, ShiftKind::ShrS)
4092     }
4093 
4094     fn visit_i32x4_shr_s(&mut self) -> Self::Output {
4095         self.masm
4096             .v128_shift(&mut self.context, OperandSize::S32, ShiftKind::ShrS)
4097     }
4098 
4099     fn visit_i64x2_shr_s(&mut self) -> Self::Output {
4100         self.masm
4101             .v128_shift(&mut self.context, OperandSize::S64, ShiftKind::ShrS)
4102     }
4103 
4104     fn visit_i16x8_q15mulr_sat_s(&mut self) -> Self::Output {
4105         self.context
4106             .binop(self.masm, OperandSize::S16, |masm, dst, src, size| {
4107                 masm.v128_q15mulr_sat_s(dst, src, writable!(dst), size)?;
4108                 Ok(TypedReg::v128(dst))
4109             })
4110     }
4111 
4112     fn visit_i8x16_min_s(&mut self) -> Self::Output {
4113         self.context
4114             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
4115                 masm.v128_min(src, dst, writable!(dst), V128MinKind::I8x16S)?;
4116                 Ok(TypedReg::v128(dst))
4117             })
4118     }
4119 
4120     fn visit_i8x16_all_true(&mut self) -> Self::Output {
4121         self.context.v128_all_true_op(self.masm, |masm, src, dst| {
4122             masm.v128_all_true(src, writable!(dst), OperandSize::S8)
4123         })
4124     }
4125 
4126     fn visit_i16x8_all_true(&mut self) -> Self::Output {
4127         self.context.v128_all_true_op(self.masm, |masm, src, dst| {
4128             masm.v128_all_true(src, writable!(dst), OperandSize::S16)
4129         })
4130     }
4131 
4132     fn visit_i32x4_all_true(&mut self) -> Self::Output {
4133         self.context.v128_all_true_op(self.masm, |masm, src, dst| {
4134             masm.v128_all_true(src, writable!(dst), OperandSize::S32)
4135         })
4136     }
4137 
4138     fn visit_i64x2_all_true(&mut self) -> Self::Output {
4139         self.context.v128_all_true_op(self.masm, |masm, src, dst| {
4140             masm.v128_all_true(src, writable!(dst), OperandSize::S64)
4141         })
4142     }
4143 
4144     fn visit_i8x16_bitmask(&mut self) -> Self::Output {
4145         self.context.v128_bitmask_op(self.masm, |masm, src, dst| {
4146             masm.v128_bitmask(src, writable!(dst), OperandSize::S8)
4147         })
4148     }
4149 
4150     fn visit_i16x8_bitmask(&mut self) -> Self::Output {
4151         self.context.v128_bitmask_op(self.masm, |masm, src, dst| {
4152             masm.v128_bitmask(src, writable!(dst), OperandSize::S16)
4153         })
4154     }
4155 
4156     fn visit_i32x4_bitmask(&mut self) -> Self::Output {
4157         self.context.v128_bitmask_op(self.masm, |masm, src, dst| {
4158             masm.v128_bitmask(src, writable!(dst), OperandSize::S32)
4159         })
4160     }
4161 
4162     fn visit_i64x2_bitmask(&mut self) -> Self::Output {
4163         self.context.v128_bitmask_op(self.masm, |masm, src, dst| {
4164             masm.v128_bitmask(src, writable!(dst), OperandSize::S64)
4165         })
4166     }
4167 
4168     fn visit_i32x4_trunc_sat_f32x4_s(&mut self) -> Self::Output {
4169         self.masm
4170             .v128_trunc(&mut self.context, V128TruncKind::I32x4FromF32x4S)
4171     }
4172 
4173     fn visit_i32x4_trunc_sat_f32x4_u(&mut self) -> Self::Output {
4174         self.masm
4175             .v128_trunc(&mut self.context, V128TruncKind::I32x4FromF32x4U)
4176     }
4177 
4178     fn visit_i32x4_trunc_sat_f64x2_s_zero(&mut self) -> Self::Output {
4179         self.masm
4180             .v128_trunc(&mut self.context, V128TruncKind::I32x4FromF64x2SZero)
4181     }
4182 
4183     fn visit_i32x4_trunc_sat_f64x2_u_zero(&mut self) -> Self::Output {
4184         self.masm
4185             .v128_trunc(&mut self.context, V128TruncKind::I32x4FromF64x2UZero)
4186     }
4187 
4188     fn visit_i16x8_min_s(&mut self) -> Self::Output {
4189         self.context
4190             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
4191                 masm.v128_min(src, dst, writable!(dst), V128MinKind::I16x8S)?;
4192                 Ok(TypedReg::v128(dst))
4193             })
4194     }
4195 
4196     fn visit_i32x4_dot_i16x8_s(&mut self) -> Self::Output {
4197         self.context
4198             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
4199                 masm.v128_dot(dst, src, writable!(dst))?;
4200                 Ok(TypedReg::v128(dst))
4201             })
4202     }
4203 
4204     fn visit_i8x16_popcnt(&mut self) -> Self::Output {
4205         self.masm.v128_popcnt(&mut self.context)
4206     }
4207 
4208     fn visit_i8x16_avgr_u(&mut self) -> Self::Output {
4209         self.context
4210             .binop(self.masm, OperandSize::S8, |masm, dst, src, size| {
4211                 masm.v128_avgr(dst, src, writable!(dst), size)?;
4212                 Ok(TypedReg::v128(dst))
4213             })
4214     }
4215 
4216     fn visit_i32x4_min_s(&mut self) -> Self::Output {
4217         self.context
4218             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
4219                 masm.v128_min(src, dst, writable!(dst), V128MinKind::I32x4S)?;
4220                 Ok(TypedReg::v128(dst))
4221             })
4222     }
4223 
4224     fn visit_i8x16_min_u(&mut self) -> Self::Output {
4225         self.context
4226             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
4227                 masm.v128_min(src, dst, writable!(dst), V128MinKind::I8x16U)?;
4228                 Ok(TypedReg::v128(dst))
4229             })
4230     }
4231 
4232     fn visit_i16x8_avgr_u(&mut self) -> Self::Output {
4233         self.context
4234             .binop(self.masm, OperandSize::S16, |masm, dst, src, size| {
4235                 masm.v128_avgr(dst, src, writable!(dst), size)?;
4236                 Ok(TypedReg::v128(dst))
4237             })
4238     }
4239 
4240     fn visit_i16x8_min_u(&mut self) -> Self::Output {
4241         self.context
4242             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
4243                 masm.v128_min(src, dst, writable!(dst), V128MinKind::I16x8U)?;
4244                 Ok(TypedReg::v128(dst))
4245             })
4246     }
4247 
4248     fn visit_i32x4_min_u(&mut self) -> Self::Output {
4249         self.context
4250             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
4251                 masm.v128_min(src, dst, writable!(dst), V128MinKind::I32x4U)?;
4252                 Ok(TypedReg::v128(dst))
4253             })
4254     }
4255 
4256     fn visit_i8x16_max_s(&mut self) -> Self::Output {
4257         self.context
4258             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
4259                 masm.v128_max(src, dst, writable!(dst), V128MaxKind::I8x16S)?;
4260                 Ok(TypedReg::v128(dst))
4261             })
4262     }
4263 
4264     fn visit_i16x8_max_s(&mut self) -> Self::Output {
4265         self.context
4266             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
4267                 masm.v128_max(src, dst, writable!(dst), V128MaxKind::I16x8S)?;
4268                 Ok(TypedReg::v128(dst))
4269             })
4270     }
4271 
4272     fn visit_i32x4_max_s(&mut self) -> Self::Output {
4273         self.context
4274             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
4275                 masm.v128_max(src, dst, writable!(dst), V128MaxKind::I32x4S)?;
4276                 Ok(TypedReg::v128(dst))
4277             })
4278     }
4279 
4280     fn visit_i8x16_max_u(&mut self) -> Self::Output {
4281         self.context
4282             .binop(self.masm, OperandSize::S8, |masm, dst, src, _size| {
4283                 masm.v128_max(src, dst, writable!(dst), V128MaxKind::I8x16U)?;
4284                 Ok(TypedReg::v128(dst))
4285             })
4286     }
4287 
4288     fn visit_i16x8_max_u(&mut self) -> Self::Output {
4289         self.context
4290             .binop(self.masm, OperandSize::S16, |masm, dst, src, _size| {
4291                 masm.v128_max(src, dst, writable!(dst), V128MaxKind::I16x8U)?;
4292                 Ok(TypedReg::v128(dst))
4293             })
4294     }
4295 
4296     fn visit_i32x4_max_u(&mut self) -> Self::Output {
4297         self.context
4298             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
4299                 masm.v128_max(src, dst, writable!(dst), V128MaxKind::I32x4U)?;
4300                 Ok(TypedReg::v128(dst))
4301             })
4302     }
4303 
4304     fn visit_i16x8_extmul_low_i8x16_s(&mut self) -> Self::Output {
4305         self.masm
4306             .v128_extmul(&mut self.context, V128ExtMulKind::LowI8x16S)
4307     }
4308 
4309     fn visit_i32x4_extmul_low_i16x8_s(&mut self) -> Self::Output {
4310         self.masm
4311             .v128_extmul(&mut self.context, V128ExtMulKind::LowI16x8S)
4312     }
4313 
4314     fn visit_i64x2_extmul_low_i32x4_s(&mut self) -> Self::Output {
4315         self.masm
4316             .v128_extmul(&mut self.context, V128ExtMulKind::LowI32x4S)
4317     }
4318 
4319     fn visit_i16x8_extmul_low_i8x16_u(&mut self) -> Self::Output {
4320         self.masm
4321             .v128_extmul(&mut self.context, V128ExtMulKind::LowI8x16U)
4322     }
4323 
4324     fn visit_i32x4_extmul_low_i16x8_u(&mut self) -> Self::Output {
4325         self.masm
4326             .v128_extmul(&mut self.context, V128ExtMulKind::LowI16x8U)
4327     }
4328 
4329     fn visit_i64x2_extmul_low_i32x4_u(&mut self) -> Self::Output {
4330         self.masm
4331             .v128_extmul(&mut self.context, V128ExtMulKind::LowI32x4U)
4332     }
4333 
4334     fn visit_i16x8_extmul_high_i8x16_u(&mut self) -> Self::Output {
4335         self.masm
4336             .v128_extmul(&mut self.context, V128ExtMulKind::HighI8x16U)
4337     }
4338 
4339     fn visit_i32x4_extmul_high_i16x8_u(&mut self) -> Self::Output {
4340         self.masm
4341             .v128_extmul(&mut self.context, V128ExtMulKind::HighI16x8U)
4342     }
4343 
4344     fn visit_i64x2_extmul_high_i32x4_u(&mut self) -> Self::Output {
4345         self.masm
4346             .v128_extmul(&mut self.context, V128ExtMulKind::HighI32x4U)
4347     }
4348 
4349     fn visit_i16x8_extmul_high_i8x16_s(&mut self) -> Self::Output {
4350         self.masm
4351             .v128_extmul(&mut self.context, V128ExtMulKind::HighI8x16S)
4352     }
4353 
4354     fn visit_i32x4_extmul_high_i16x8_s(&mut self) -> Self::Output {
4355         self.masm
4356             .v128_extmul(&mut self.context, V128ExtMulKind::HighI16x8S)
4357     }
4358 
4359     fn visit_i64x2_extmul_high_i32x4_s(&mut self) -> Self::Output {
4360         self.masm
4361             .v128_extmul(&mut self.context, V128ExtMulKind::HighI32x4S)
4362     }
4363 
4364     fn visit_i16x8_extadd_pairwise_i8x16_s(&mut self) -> Self::Output {
4365         self.context.unop(self.masm, |masm, op| {
4366             masm.v128_extadd_pairwise(op, writable!(op), V128ExtAddKind::I8x16S)?;
4367             Ok(TypedReg::v128(op))
4368         })
4369     }
4370 
4371     fn visit_i16x8_extadd_pairwise_i8x16_u(&mut self) -> Self::Output {
4372         self.context.unop(self.masm, |masm, op| {
4373             masm.v128_extadd_pairwise(op, writable!(op), V128ExtAddKind::I8x16U)?;
4374             Ok(TypedReg::v128(op))
4375         })
4376     }
4377 
4378     fn visit_i32x4_extadd_pairwise_i16x8_s(&mut self) -> Self::Output {
4379         self.context.unop(self.masm, |masm, op| {
4380             masm.v128_extadd_pairwise(op, writable!(op), V128ExtAddKind::I16x8S)?;
4381             Ok(TypedReg::v128(op))
4382         })
4383     }
4384 
4385     fn visit_i32x4_extadd_pairwise_i16x8_u(&mut self) -> Self::Output {
4386         self.context.unop(self.masm, |masm, op| {
4387             masm.v128_extadd_pairwise(op, writable!(op), V128ExtAddKind::I16x8U)?;
4388             Ok(TypedReg::v128(op))
4389         })
4390     }
4391 
4392     fn visit_f32x4_add(&mut self) -> Self::Output {
4393         self.context
4394             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
4395                 masm.v128_add(dst, src, writable!(dst), V128AddKind::F32x4)?;
4396                 Ok(TypedReg::v128(dst))
4397             })
4398     }
4399 
4400     fn visit_f64x2_add(&mut self) -> Self::Output {
4401         self.context
4402             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
4403                 masm.v128_add(dst, src, writable!(dst), V128AddKind::F64x2)?;
4404                 Ok(TypedReg::v128(dst))
4405             })
4406     }
4407 
4408     fn visit_f32x4_sub(&mut self) -> Self::Output {
4409         self.context
4410             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
4411                 masm.v128_sub(dst, src, writable!(dst), V128SubKind::F32x4)?;
4412                 Ok(TypedReg::v128(dst))
4413             })
4414     }
4415 
4416     fn visit_f64x2_sub(&mut self) -> Self::Output {
4417         self.context
4418             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
4419                 masm.v128_sub(dst, src, writable!(dst), V128SubKind::F64x2)?;
4420                 Ok(TypedReg::v128(dst))
4421             })
4422     }
4423 
4424     fn visit_f32x4_mul(&mut self) -> Self::Output {
4425         self.masm.v128_mul(&mut self.context, V128MulKind::F32x4)
4426     }
4427 
4428     fn visit_f64x2_mul(&mut self) -> Self::Output {
4429         self.masm.v128_mul(&mut self.context, V128MulKind::F64x2)
4430     }
4431 
4432     fn visit_f32x4_div(&mut self) -> Self::Output {
4433         self.context
4434             .binop(self.masm, OperandSize::S32, |masm, dst, src, size| {
4435                 masm.v128_div(dst, src, writable!(dst), size)?;
4436                 Ok(TypedReg::v128(dst))
4437             })
4438     }
4439 
4440     fn visit_f64x2_div(&mut self) -> Self::Output {
4441         self.context
4442             .binop(self.masm, OperandSize::S64, |masm, dst, src, size| {
4443                 masm.v128_div(dst, src, writable!(dst), size)?;
4444                 Ok(TypedReg::v128(dst))
4445             })
4446     }
4447 
4448     fn visit_f32x4_neg(&mut self) -> Self::Output {
4449         self.context.unop(self.masm, |masm, reg| {
4450             masm.v128_neg(writable!(reg), V128NegKind::F32x4)?;
4451             Ok(TypedReg::v128(reg))
4452         })
4453     }
4454 
4455     fn visit_f32x4_ceil(&mut self) -> Self::Output {
4456         self.context.unop(self.masm, |masm, reg| {
4457             masm.v128_ceil(reg, writable!(reg), OperandSize::S32)?;
4458             Ok(TypedReg::v128(reg))
4459         })
4460     }
4461 
4462     fn visit_f64x2_neg(&mut self) -> Self::Output {
4463         self.context.unop(self.masm, |masm, reg| {
4464             masm.v128_neg(writable!(reg), V128NegKind::F64x2)?;
4465             Ok(TypedReg::v128(reg))
4466         })
4467     }
4468 
4469     fn visit_f64x2_ceil(&mut self) -> Self::Output {
4470         self.context.unop(self.masm, |masm, reg| {
4471             masm.v128_ceil(reg, writable!(reg), OperandSize::S64)?;
4472             Ok(TypedReg::v128(reg))
4473         })
4474     }
4475 
4476     fn visit_f32x4_sqrt(&mut self) -> Self::Output {
4477         self.context.unop(self.masm, |masm, reg| {
4478             masm.v128_sqrt(reg, writable!(reg), OperandSize::S32)?;
4479             Ok(TypedReg::v128(reg))
4480         })
4481     }
4482 
4483     fn visit_f32x4_floor(&mut self) -> Self::Output {
4484         self.context.unop(self.masm, |masm, reg| {
4485             masm.v128_floor(reg, writable!(reg), OperandSize::S32)?;
4486             Ok(TypedReg::v128(reg))
4487         })
4488     }
4489 
4490     fn visit_f64x2_sqrt(&mut self) -> Self::Output {
4491         self.context.unop(self.masm, |masm, reg| {
4492             masm.v128_sqrt(reg, writable!(reg), OperandSize::S64)?;
4493             Ok(TypedReg::v128(reg))
4494         })
4495     }
4496 
4497     fn visit_f64x2_floor(&mut self) -> Self::Output {
4498         self.context.unop(self.masm, |masm, reg| {
4499             masm.v128_floor(reg, writable!(reg), OperandSize::S64)?;
4500             Ok(TypedReg::v128(reg))
4501         })
4502     }
4503 
4504     fn visit_f32x4_nearest(&mut self) -> Self::Output {
4505         self.context.unop(self.masm, |masm, reg| {
4506             masm.v128_nearest(reg, writable!(reg), OperandSize::S32)?;
4507             Ok(TypedReg::v128(reg))
4508         })
4509     }
4510 
4511     fn visit_f64x2_nearest(&mut self) -> Self::Output {
4512         self.context.unop(self.masm, |masm, reg| {
4513             masm.v128_nearest(reg, writable!(reg), OperandSize::S64)?;
4514             Ok(TypedReg::v128(reg))
4515         })
4516     }
4517 
4518     fn visit_f32x4_trunc(&mut self) -> Self::Output {
4519         self.masm
4520             .v128_trunc(&mut self.context, V128TruncKind::F32x4)
4521     }
4522 
4523     fn visit_f64x2_trunc(&mut self) -> Self::Output {
4524         self.masm
4525             .v128_trunc(&mut self.context, V128TruncKind::F64x2)
4526     }
4527 
4528     fn visit_v128_load32_zero(&mut self, memarg: MemArg) -> Self::Output {
4529         self.emit_wasm_load(
4530             &memarg,
4531             WasmValType::V128,
4532             LoadKind::VectorZero(OperandSize::S32),
4533         )
4534     }
4535 
4536     fn visit_v128_load64_zero(&mut self, memarg: MemArg) -> Self::Output {
4537         self.emit_wasm_load(
4538             &memarg,
4539             WasmValType::V128,
4540             LoadKind::VectorZero(OperandSize::S64),
4541         )
4542     }
4543 
4544     fn visit_f32x4_pmin(&mut self) -> Self::Output {
4545         self.context
4546             .binop(self.masm, OperandSize::S32, |masm, dst, src, size| {
4547                 masm.v128_pmin(dst, src, writable!(dst), size)?;
4548                 Ok(TypedReg::v128(dst))
4549             })
4550     }
4551 
4552     fn visit_f64x2_pmin(&mut self) -> Self::Output {
4553         self.context
4554             .binop(self.masm, OperandSize::S64, |masm, dst, src, size| {
4555                 masm.v128_pmin(dst, src, writable!(dst), size)?;
4556                 Ok(TypedReg::v128(dst))
4557             })
4558     }
4559 
4560     fn visit_f32x4_pmax(&mut self) -> Self::Output {
4561         self.context
4562             .binop(self.masm, OperandSize::S32, |masm, dst, src, size| {
4563                 masm.v128_pmax(dst, src, writable!(dst), size)?;
4564                 Ok(TypedReg::v128(dst))
4565             })
4566     }
4567 
4568     fn visit_f64x2_pmax(&mut self) -> Self::Output {
4569         self.context
4570             .binop(self.masm, OperandSize::S64, |masm, dst, src, size| {
4571                 masm.v128_pmax(dst, src, writable!(dst), size)?;
4572                 Ok(TypedReg::v128(dst))
4573             })
4574     }
4575 
4576     fn visit_f32x4_min(&mut self) -> Self::Output {
4577         self.context
4578             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
4579                 masm.v128_min(dst, src, writable!(dst), V128MinKind::F32x4)?;
4580                 Ok(TypedReg::v128(dst))
4581             })
4582     }
4583 
4584     fn visit_f64x2_min(&mut self) -> Self::Output {
4585         self.context
4586             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
4587                 masm.v128_min(dst, src, writable!(dst), V128MinKind::F64x2)?;
4588                 Ok(TypedReg::v128(dst))
4589             })
4590     }
4591 
4592     fn visit_f32x4_max(&mut self) -> Self::Output {
4593         self.context
4594             .binop(self.masm, OperandSize::S32, |masm, dst, src, _size| {
4595                 masm.v128_max(dst, src, writable!(dst), V128MaxKind::F32x4)?;
4596                 Ok(TypedReg::v128(dst))
4597             })
4598     }
4599 
4600     fn visit_f64x2_max(&mut self) -> Self::Output {
4601         self.context
4602             .binop(self.masm, OperandSize::S64, |masm, dst, src, _size| {
4603                 masm.v128_max(dst, src, writable!(dst), V128MaxKind::F64x2)?;
4604                 Ok(TypedReg::v128(dst))
4605             })
4606     }
4607 
4608     wasmparser::for_each_visit_simd_operator!(def_unsupported);
4609 }
4610 
4611 impl<'a, 'translation, 'data, M> CodeGen<'a, 'translation, 'data, M, Emission>
4612 where
4613     M: MacroAssembler,
4614 {
4615     fn cmp_i32s(&mut self, kind: IntCmpKind) -> Result<()> {
4616         self.context.i32_binop(self.masm, |masm, dst, src, size| {
4617             masm.cmp_with_set(writable!(dst), src, kind, size)?;
4618             Ok(TypedReg::i32(dst))
4619         })
4620     }
4621 
4622     fn cmp_i64s(&mut self, kind: IntCmpKind) -> Result<()> {
4623         self.context
4624             .i64_binop(self.masm, move |masm, dst, src, size| {
4625                 masm.cmp_with_set(writable!(dst), src, kind, size)?;
4626                 Ok(TypedReg::i32(dst)) // Return value for comparisons is an `i32`.
4627             })
4628     }
4629 }
4630 
4631 impl TryFrom<WasmValType> for OperandSize {
4632     type Error = anyhow::Error;
4633     fn try_from(ty: WasmValType) -> Result<OperandSize> {
4634         let ty = match ty {
4635             WasmValType::I32 | WasmValType::F32 => OperandSize::S32,
4636             WasmValType::I64 | WasmValType::F64 => OperandSize::S64,
4637             WasmValType::V128 => OperandSize::S128,
4638             WasmValType::Ref(rt) => {
4639                 match rt.heap_type {
4640                     // TODO: Hardcoded size, assuming 64-bit support only. Once
4641                     // Wasmtime supports 32-bit architectures, this will need
4642                     // to be updated in such a way that the calculation of the
4643                     // OperandSize will depend on the target's  pointer size.
4644                     WasmHeapType::Func => OperandSize::S64,
4645                     WasmHeapType::Extern => OperandSize::S64,
4646                     _ => bail!(CodeGenError::unsupported_wasm_type()),
4647                 }
4648             }
4649         };
4650         Ok(ty)
4651     }
4652 }
4653