From 4c1f44a79d0e04fb33042c2eabc27040d260dfa5 Mon Sep 17 00:00:00 2001
From: Henry Gressmann <mail@henrygressmann.de>
Date: Fri, 11 Oct 2024 22:44:29 +0200
Subject: feat: add simd support to the parser

---
 crates/parser/src/visit.rs | 130 +++++++++++++++++++++++++++++++++++----------
 1 file changed, 102 insertions(+), 28 deletions(-)

(limited to 'crates/parser/src/visit.rs')

diff --git a/crates/parser/src/visit.rs b/crates/parser/src/visit.rs
index c9e5eac..2e80d20 100644
--- a/crates/parser/src/visit.rs
+++ b/crates/parser/src/visit.rs
@@ -3,7 +3,7 @@ use crate::Result;
 use crate::conversion::{convert_heaptype, convert_valtype};
 use alloc::string::ToString;
 use alloc::{boxed::Box, vec::Vec};
-use tinywasm_types::{Instruction, MemoryArg};
+use tinywasm_types::{Instruction, MemoryArg, SimdInstruction, WasmFunctionData};
 use wasmparser::{FuncValidator, FuncValidatorAllocations, FunctionBody, VisitOperator, WasmModuleResources};
 
 struct ValidateThenVisit<'a, R: WasmModuleResources>(usize, &'a mut FunctionBuilder<R>);
@@ -26,7 +26,7 @@ pub(crate) fn process_operators_and_validate<R: WasmModuleResources>(
     validator: FuncValidator<R>,
     body: FunctionBody<'_>,
     local_addr_map: Vec<u32>,
-) -> Result<(Box<[Instruction]>, FuncValidatorAllocations)> {
+) -> Result<(Box<[Instruction]>, WasmFunctionData, FuncValidatorAllocations)> {
     let mut reader = body.get_operators_reader()?;
     let remaining = reader.get_binary_reader().bytes_remaining();
     let mut builder = FunctionBuilder::new(remaining, validator, local_addr_map);
@@ -40,42 +40,65 @@ pub(crate) fn process_operators_and_validate<R: WasmModuleResources>(
         return Err(builder.errors.remove(0));
     }
 
-    Ok((builder.instructions.into_boxed_slice(), builder.validator.into_allocations()))
+    Ok((
+        builder.instructions.into_boxed_slice(),
+        WasmFunctionData { v128_constants: builder.v128_constants.into_boxed_slice() },
+        builder.validator.into_allocations(),
+    ))
 }
 
 macro_rules! define_operand {
-    ($name:ident($instr:ident, $ty:ty)) => {
+    ($name:ident($instr:expr, $ty:ty)) => {
         fn $name(&mut self, arg: $ty) -> Self::Output {
-            self.instructions.push(Instruction::$instr(arg));
+            self.instructions.push($instr(arg).into());
         }
     };
 
-    ($name:ident($instr:ident, $ty:ty, $ty2:ty)) => {
+    ($name:ident($instr:expr, $ty:ty, $ty2:ty)) => {
         fn $name(&mut self, arg: $ty, arg2: $ty2) -> Self::Output {
-            self.instructions.push(Instruction::$instr(arg, arg2));
+            self.instructions.push($instr(arg, arg2).into());
         }
     };
 
-    ($name:ident($instr:ident)) => {
+    ($name:ident($instr:expr)) => {
         fn $name(&mut self) -> Self::Output {
-            self.instructions.push(Instruction::$instr);
+            self.instructions.push($instr.into());
         }
     };
 }
 
 macro_rules! define_operands {
     ($($name:ident($instr:ident $(,$ty:ty)*)),*) => {$(
-        define_operand!($name($instr $(,$ty)*));
+        define_operand!($name(Instruction::$instr $(,$ty)*));
+    )*};
+}
+
+macro_rules! define_operands_simd {
+    ($($name:ident($instr:ident $(,$ty:ty)*)),*) => {$(
+        define_operand!($name(SimdInstruction::$instr $(,$ty)*));
     )*};
 }
 
 macro_rules! define_mem_operands {
     ($($name:ident($instr:ident)),*) => {$(
         fn $name(&mut self, memarg: wasmparser::MemArg) -> Self::Output {
-            self.instructions.push(Instruction::$instr {
-                offset: memarg.offset,
-                mem_addr: memarg.memory,
-            });
+            self.instructions.push(Instruction::$instr(MemoryArg::new(memarg.offset, memarg.memory)));
+        }
+    )*};
+}
+
+macro_rules! define_mem_operands_simd {
+    ($($name:ident($instr:ident)),*) => {$(
+        fn $name(&mut self, memarg: wasmparser::MemArg) -> Self::Output {
+            self.instructions.push(SimdInstruction::$instr(MemoryArg::new(memarg.offset, memarg.memory)).into());
+        }
+    )*};
+}
+
+macro_rules! define_mem_operands_simd_lane {
+    ($($name:ident($instr:ident)),*) => {$(
+        fn $name(&mut self, memarg: wasmparser::MemArg, lane: u8) -> Self::Output {
+            self.instructions.push(SimdInstruction::$instr(MemoryArg::new(memarg.offset, memarg.memory), lane).into());
         }
     )*};
 }
@@ -83,6 +106,7 @@ macro_rules! define_mem_operands {
 pub(crate) struct FunctionBuilder<R: WasmModuleResources> {
     validator: FuncValidator<R>,
     instructions: Vec<Instruction>,
+    v128_constants: Vec<u128>,
     label_ptrs: Vec<usize>,
     local_addr_map: Vec<u32>,
     errors: Vec<crate::ParseError>,
@@ -107,6 +131,7 @@ impl<R: WasmModuleResources> FunctionBuilder<R> {
             validator,
             local_addr_map,
             instructions: Vec::with_capacity(instr_capacity),
+            v128_constants: Vec::new(),
             label_ptrs: Vec::with_capacity(256),
             errors: Vec::new(),
         }
@@ -127,8 +152,8 @@ macro_rules! impl_visit_operator {
     (@@sign_extension $($rest:tt)* ) => {};
     (@@saturating_float_to_int $($rest:tt)* ) => {};
     (@@bulk_memory $($rest:tt)* ) => {};
-    (@@tail_call $($rest:tt)* ) => {};
-    // (@@simd $($rest:tt)* ) => {};
+    // (@@tail_call $($rest:tt)* ) => {};
+    (@@simd $($rest:tt)* ) => {};
     (@@$proposal:ident $op:ident $({ $($arg:ident: $argty:ty),* })? => $visit:ident ($($ann:tt)*)) => {
         #[cold]
         fn $visit(&mut self $($(,$arg: $argty)*)?) {
@@ -142,7 +167,7 @@ impl<R: WasmModuleResources> wasmparser::VisitOperator<'_> for FunctionBuilder<R
     wasmparser::for_each_operator!(impl_visit_operator);
 
     define_mem_operands! {
-        visit_i32_load(I32Load), visit_i64_load(I64Load), visit_f32_load(F32Load), visit_f64_load(F64Load), visit_i32_load8_s(I32Load8S), visit_i32_load8_u(I32Load8U), visit_i32_load16_s(I32Load16S), visit_i32_load16_u(I32Load16U), visit_i64_load8_s(I64Load8S), visit_i64_load8_u(I64Load8U), visit_i64_load16_s(I64Load16S), visit_i64_load16_u(I64Load16U), visit_i64_load32_s(I64Load32S), visit_i64_load32_u(I64Load32U), /* visit_i32_store( I32Store), custom implementation */ visit_i64_store(I64Store), visit_f32_store(F32Store), visit_f64_store(F64Store), visit_i32_store8(I32Store8), visit_i32_store16(I32Store16), visit_i64_store8(I64Store8), visit_i64_store16(I64Store16), visit_i64_store32(I64Store32)
+        visit_i32_load(I32Load), visit_i64_load(I64Load), visit_f32_load(F32Load), visit_f64_load(F64Load), visit_i32_load8_s(I32Load8S), visit_i32_load8_u(I32Load8U), visit_i32_load16_s(I32Load16S), visit_i32_load16_u(I32Load16U), visit_i64_load8_s(I64Load8S), visit_i64_load8_u(I64Load8U), visit_i64_load16_s(I64Load16S), visit_i64_load16_u(I64Load16U), visit_i64_load32_s(I64Load32S), visit_i64_load32_u(I64Load32U), visit_i32_store( I32Store), visit_i64_store(I64Store), visit_f32_store(F32Store), visit_f64_store(F64Store), visit_i32_store8(I32Store8), visit_i32_store16(I32Store16), visit_i64_store8(I64Store8), visit_i64_store16(I64Store16), visit_i64_store32(I64Store32)
     }
 
     define_operands! {
@@ -160,19 +185,73 @@ impl<R: WasmModuleResources> wasmparser::VisitOperator<'_> for FunctionBuilder<R
 
         // Bulk Memory
         visit_memory_init(MemoryInit, u32, u32), visit_memory_copy(MemoryCopy, u32, u32), visit_table_init(TableInit, u32, u32), visit_memory_fill(MemoryFill, u32), visit_data_drop(DataDrop, u32), visit_elem_drop(ElemDrop, u32)
+    }
 
-        // simd
-        // visit_v128_load(V128Load), visit_v128_store(V128Store), visit_v128_const(V128Const), visit_v128_not(V128Not), visit_v128_and(V128And), visit_v128_or(V128Or), visit_v128_xor(V128Xor), visit_v128_bitselect(V128Bitselect), visit_v128_any_true(V128AnyTrue), visit_v128_all_true(V128AllTrue), visit_v128_shl(V128Shl), visit_v128_shr_s(V128ShrS), visit_v128_shr_u(V128ShrU), visit_v128_add(V128Add), visit_v128_sub(V128Sub), visit_v128_mul(V128Mul), visit_v128_div_s(V128DivS), visit_v128_div_u(V128DivU), visit_v128_min_s(V128MinS), visit_v128_min_u(V128MinU), visit_v128_max_s(V128MaxS), visit_v128_max_u(V128MaxU), visit_v128_eq(V128Eq), visit_v128_ne(V128Ne), visit_v128_lt_s(V128LtS), visit_v128_lt_u(V128LtU), visit_v128_le_s(V128LeS), visit_v128_le_u(V128LeU), visit_v128_gt_s(V128GtS), visit_v128_gt_u(V128GtU), visit_v128_ge_s(V128GeS), visit_v128_ge_u(V128GeU), visit_v128_narrow_i32x4_s(V128NarrowI32x4S), visit_v128_narrow_i32x4_u(V128NarrowI32x4U), visit_v128_widen_low_i8x16_s(V128WidenLowI8x16S), visit_v128_widen_high_i8x16_s(V128WidenHighI8x16S), visit_v128_widen_low_i8x16_u(V128WidenLowI8x16U), visit_v128_widen_high_i8x16_u(V128WidenHighI8x16U), visit_v128_widen_low_i16x8_s(V128WidenLowI16x8S), visit_v128_widen_high_i16x8_s(V128WidenHighI16x8S), visit_v128_widen_low_i16x8_u(V128WidenLowI16x8U)
+    // simd
+    define_mem_operands_simd! {
+        visit_v128_load(V128Load), visit_v128_load8x8_s(V128Load8x8S), visit_v128_load8x8_u(V128Load8x8U), visit_v128_load16x4_s(V128Load16x4S), visit_v128_load16x4_u(V128Load16x4U), visit_v128_load32x2_s(V128Load32x2S), visit_v128_load32x2_u(V128Load32x2U), visit_v128_load8_splat(V128Load8Splat), visit_v128_load16_splat(V128Load16Splat), visit_v128_load32_splat(V128Load32Splat), visit_v128_load64_splat(V128Load64Splat), visit_v128_load32_zero(V128Load32Zero), visit_v128_load64_zero(V128Load64Zero), visit_v128_store(V128Store)
+    }
+    define_mem_operands_simd_lane! {
+        visit_v128_load8_lane(V128Load8Lane), visit_v128_load16_lane(V128Load16Lane), visit_v128_load32_lane(V128Load32Lane), visit_v128_load64_lane(V128Load64Lane),
+        visit_v128_store8_lane(V128Store8Lane), visit_v128_store16_lane(V128Store16Lane), visit_v128_store32_lane(V128Store32Lane), visit_v128_store64_lane(V128Store64Lane)
+    }
+    define_operands_simd! {
+        visit_v128_not(V128Not), visit_v128_and(V128And), visit_v128_andnot(V128AndNot), visit_v128_or(V128Or), visit_v128_xor(V128Xor), visit_v128_bitselect(V128Bitselect), visit_v128_any_true(V128AnyTrue),
+        visit_i8x16_splat(I8x16Splat), visit_i8x16_swizzle(I8x16Swizzle), visit_i8x16_eq(I8x16Eq), visit_i8x16_ne(I8x16Ne), visit_i8x16_lt_s(I8x16LtS), visit_i8x16_lt_u(I8x16LtU), visit_i8x16_gt_s(I8x16GtS), visit_i8x16_gt_u(I8x16GtU), visit_i8x16_le_s(I8x16LeS), visit_i8x16_le_u(I8x16LeU), visit_i8x16_ge_s(I8x16GeS), visit_i8x16_ge_u(I8x16GeU),
+        visit_i16x8_splat(I16x8Splat), visit_i16x8_eq(I16x8Eq), visit_i16x8_ne(I16x8Ne), visit_i16x8_lt_s(I16x8LtS), visit_i16x8_lt_u(I16x8LtU), visit_i16x8_gt_s(I16x8GtS), visit_i16x8_gt_u(I16x8GtU), visit_i16x8_le_s(I16x8LeS), visit_i16x8_le_u(I16x8LeU), visit_i16x8_ge_s(I16x8GeS), visit_i16x8_ge_u(I16x8GeU),
+        visit_i32x4_splat(I32x4Splat), visit_i32x4_eq(I32x4Eq), visit_i32x4_ne(I32x4Ne), visit_i32x4_lt_s(I32x4LtS), visit_i32x4_lt_u(I32x4LtU), visit_i32x4_gt_s(I32x4GtS), visit_i32x4_gt_u(I32x4GtU), visit_i32x4_le_s(I32x4LeS), visit_i32x4_le_u(I32x4LeU), visit_i32x4_ge_s(I32x4GeS), visit_i32x4_ge_u(I32x4GeU),
+        visit_i64x2_splat(I64x2Splat), visit_i64x2_eq(I64x2Eq), visit_i64x2_ne(I64x2Ne), visit_i64x2_lt_s(I64x2LtS), visit_i64x2_gt_s(I64x2GtS), visit_i64x2_le_s(I64x2LeS), visit_i64x2_ge_s(I64x2GeS),
+        visit_f32x4_splat(F32x4Splat), visit_f32x4_eq(F32x4Eq), visit_f32x4_ne(F32x4Ne), visit_f32x4_lt(F32x4Lt), visit_f32x4_gt(F32x4Gt), visit_f32x4_le(F32x4Le), visit_f32x4_ge(F32x4Ge),
+        visit_f64x2_splat(F64x2Splat), visit_f64x2_eq(F64x2Eq), visit_f64x2_ne(F64x2Ne), visit_f64x2_lt(F64x2Lt), visit_f64x2_gt(F64x2Gt), visit_f64x2_le(F64x2Le), visit_f64x2_ge(F64x2Ge),
+        visit_i8x16_abs(I8x16Abs), visit_i8x16_neg(I8x16Neg), visit_i8x16_all_true(I8x16AllTrue), visit_i8x16_bitmask(I8x16Bitmask), visit_i8x16_shl(I8x16Shl), visit_i8x16_shr_s(I8x16ShrS), visit_i8x16_shr_u(I8x16ShrU), visit_i8x16_add(I8x16Add), visit_i8x16_sub(I8x16Sub), visit_i8x16_min_s(I8x16MinS), visit_i8x16_min_u(I8x16MinU), visit_i8x16_max_s(I8x16MaxS), visit_i8x16_max_u(I8x16MaxU),
+        visit_i16x8_abs(I16x8Abs), visit_i16x8_neg(I16x8Neg), visit_i16x8_all_true(I16x8AllTrue), visit_i16x8_bitmask(I16x8Bitmask), visit_i16x8_shl(I16x8Shl), visit_i16x8_shr_s(I16x8ShrS), visit_i16x8_shr_u(I16x8ShrU), visit_i16x8_add(I16x8Add), visit_i16x8_sub(I16x8Sub), visit_i16x8_min_s(I16x8MinS), visit_i16x8_min_u(I16x8MinU), visit_i16x8_max_s(I16x8MaxS), visit_i16x8_max_u(I16x8MaxU),
+        visit_i32x4_abs(I32x4Abs), visit_i32x4_neg(I32x4Neg), visit_i32x4_all_true(I32x4AllTrue), visit_i32x4_bitmask(I32x4Bitmask), visit_i32x4_shl(I32x4Shl), visit_i32x4_shr_s(I32x4ShrS), visit_i32x4_shr_u(I32x4ShrU), visit_i32x4_add(I32x4Add), visit_i32x4_sub(I32x4Sub), visit_i32x4_min_s(I32x4MinS), visit_i32x4_min_u(I32x4MinU), visit_i32x4_max_s(I32x4MaxS), visit_i32x4_max_u(I32x4MaxU),
+        visit_i64x2_abs(I64x2Abs), visit_i64x2_neg(I64x2Neg), visit_i64x2_all_true(I64x2AllTrue), visit_i64x2_bitmask(I64x2Bitmask), visit_i64x2_shl(I64x2Shl), visit_i64x2_shr_s(I64x2ShrS), visit_i64x2_shr_u(I64x2ShrU), visit_i64x2_add(I64x2Add), visit_i64x2_sub(I64x2Sub), visit_i64x2_mul(I64x2Mul),
+        visit_i8x16_narrow_i16x8_s(I8x16NarrowI16x8S), visit_i8x16_narrow_i16x8_u(I8x16NarrowI16x8U), visit_i8x16_add_sat_s(I8x16AddSatS), visit_i8x16_add_sat_u(I8x16AddSatU), visit_i8x16_sub_sat_s(I8x16SubSatS), visit_i8x16_sub_sat_u(I8x16SubSatU), visit_i8x16_avgr_u(I8x16AvgrU),
+        visit_i16x8_narrow_i32x4_s(I16x8NarrowI32x4S), visit_i16x8_narrow_i32x4_u(I16x8NarrowI32x4U), visit_i16x8_add_sat_s(I16x8AddSatS), visit_i16x8_add_sat_u(I16x8AddSatU), visit_i16x8_sub_sat_s(I16x8SubSatS), visit_i16x8_sub_sat_u(I16x8SubSatU), visit_i16x8_avgr_u(I16x8AvgrU),
+        visit_i16x8_extadd_pairwise_i8x16_s(I16x8ExtAddPairwiseI8x16S), visit_i16x8_extadd_pairwise_i8x16_u(I16x8ExtAddPairwiseI8x16U), visit_i16x8_mul(I16x8Mul),
+        visit_i32x4_extadd_pairwise_i16x8_s(I32x4ExtAddPairwiseI16x8S), visit_i32x4_extadd_pairwise_i16x8_u(I32x4ExtAddPairwiseI16x8U), visit_i32x4_mul(I32x4Mul),
+        visit_i16x8_extmul_low_i8x16_s(I16x8ExtMulLowI8x16S), visit_i16x8_extmul_low_i8x16_u(I16x8ExtMulLowI8x16U), visit_i16x8_extmul_high_i8x16_s(I16x8ExtMulHighI8x16S), visit_i16x8_extmul_high_i8x16_u(I16x8ExtMulHighI8x16U),
+        visit_i32x4_extmul_low_i16x8_s(I32x4ExtMulLowI16x8S), visit_i32x4_extmul_low_i16x8_u(I32x4ExtMulLowI16x8U), visit_i32x4_extmul_high_i16x8_s(I32x4ExtMulHighI16x8S), visit_i32x4_extmul_high_i16x8_u(I32x4ExtMulHighI16x8U),
+        visit_i64x2_extmul_low_i32x4_s(I64x2ExtMulLowI32x4S), visit_i64x2_extmul_low_i32x4_u(I64x2ExtMulLowI32x4U), visit_i64x2_extmul_high_i32x4_s(I64x2ExtMulHighI32x4S), visit_i64x2_extmul_high_i32x4_u(I64x2ExtMulHighI32x4U),
+        visit_i16x8_extend_low_i8x16_s(I16x8ExtendLowI8x16S), visit_i16x8_extend_low_i8x16_u(I16x8ExtendLowI8x16U), visit_i16x8_extend_high_i8x16_s(I16x8ExtendHighI8x16S), visit_i16x8_extend_high_i8x16_u(I16x8ExtendHighI8x16U),
+        visit_i32x4_extend_low_i16x8_s(I32x4ExtendLowI16x8S), visit_i32x4_extend_low_i16x8_u(I32x4ExtendLowI16x8U), visit_i32x4_extend_high_i16x8_s(I32x4ExtendHighI16x8S), visit_i32x4_extend_high_i16x8_u(I32x4ExtendHighI16x8U),
+        visit_i64x2_extend_low_i32x4_s(I64x2ExtendLowI32x4S), visit_i64x2_extend_low_i32x4_u(I64x2ExtendLowI32x4U), visit_i64x2_extend_high_i32x4_s(I64x2ExtendHighI32x4S), visit_i64x2_extend_high_i32x4_u(I64x2ExtendHighI32x4U),
+        visit_i8x16_popcnt(I8x16Popcnt), visit_i16x8_q15mulr_sat_s(I16x8Q15MulrSatS), visit_i32x4_dot_i16x8_s(I32x4DotI16x8S),
+        visit_f32x4_ceil(F32x4Ceil), visit_f32x4_floor(F32x4Floor), visit_f32x4_trunc(F32x4Trunc), visit_f32x4_nearest(F32x4Nearest), visit_f32x4_abs(F32x4Abs), visit_f32x4_neg(F32x4Neg), visit_f32x4_sqrt(F32x4Sqrt), visit_f32x4_add(F32x4Add), visit_f32x4_sub(F32x4Sub), visit_f32x4_mul(F32x4Mul), visit_f32x4_div(F32x4Div), visit_f32x4_min(F32x4Min), visit_f32x4_max(F32x4Max), visit_f32x4_pmin(F32x4PMin), visit_f32x4_pmax(F32x4PMax),
+        visit_f64x2_ceil(F64x2Ceil), visit_f64x2_floor(F64x2Floor), visit_f64x2_trunc(F64x2Trunc), visit_f64x2_nearest(F64x2Nearest), visit_f64x2_abs(F64x2Abs), visit_f64x2_neg(F64x2Neg), visit_f64x2_sqrt(F64x2Sqrt), visit_f64x2_add(F64x2Add), visit_f64x2_sub(F64x2Sub), visit_f64x2_mul(F64x2Mul), visit_f64x2_div(F64x2Div), visit_f64x2_min(F64x2Min), visit_f64x2_max(F64x2Max), visit_f64x2_pmin(F64x2PMin), visit_f64x2_pmax(F64x2PMax),
+        visit_i32x4_trunc_sat_f32x4_s(I32x4TruncSatF32x4S), visit_i32x4_trunc_sat_f32x4_u(I32x4TruncSatF32x4U),
+        visit_f32x4_convert_i32x4_s(F32x4ConvertI32x4S), visit_f32x4_convert_i32x4_u(F32x4ConvertI32x4U),
+        visit_i32x4_trunc_sat_f64x2_s_zero(I32x4TruncSatF64x2SZero), visit_i32x4_trunc_sat_f64x2_u_zero(I32x4TruncSatF64x2UZero),
+        visit_f64x2_convert_low_i32x4_s(F64x2ConvertLowI32x4S), visit_f64x2_convert_low_i32x4_u(F64x2ConvertLowI32x4U),
+        visit_f32x4_demote_f64x2_zero(F32x4DemoteF64x2Zero), visit_f64x2_promote_low_f32x4(F64x2PromoteLowF32x4),
+
+        visit_i8x16_extract_lane_s(I8x16ExtractLaneS, u8), visit_i8x16_extract_lane_u(I8x16ExtractLaneU, u8), visit_i8x16_replace_lane(I8x16ReplaceLane, u8),
+        visit_i16x8_extract_lane_s(I16x8ExtractLaneS, u8), visit_i16x8_extract_lane_u(I16x8ExtractLaneU, u8), visit_i16x8_replace_lane(I16x8ReplaceLane, u8),
+        visit_i32x4_extract_lane(I32x4ExtractLane, u8), visit_i32x4_replace_lane(I32x4ReplaceLane, u8),
+        visit_i64x2_extract_lane(I64x2ExtractLane, u8), visit_i64x2_replace_lane(I64x2ReplaceLane, u8),
+        visit_f32x4_extract_lane(F32x4ExtractLane, u8), visit_f32x4_replace_lane(F32x4ReplaceLane, u8),
+        visit_f64x2_extract_lane(F64x2ExtractLane, u8), visit_f64x2_replace_lane(F64x2ReplaceLane, u8)
     }
 
-    fn visit_return_call(&mut self, function_index: u32) -> Self::Output {
-        self.instructions.push(Instruction::ReturnCall(function_index));
+    fn visit_i8x16_shuffle(&mut self, lanes: [u8; 16]) -> Self::Output {
+        self.v128_constants.push(u128::from_le_bytes(lanes));
+        self.instructions.push(SimdInstruction::I8x16Shuffle(self.v128_constants.len() as u32 - 1).into());
     }
 
-    fn visit_return_call_indirect(&mut self, type_index: u32, table_index: u32) -> Self::Output {
-        self.instructions.push(Instruction::ReturnCallIndirect(type_index, table_index));
+    fn visit_v128_const(&mut self, value: wasmparser::V128) -> Self::Output {
+        self.v128_constants.push(value.i128() as u128);
+        self.instructions.push(SimdInstruction::V128Const(self.v128_constants.len() as u32 - 1).into());
     }
 
+    // fn visit_return_call(&mut self, function_index: u32) -> Self::Output {
+    //     self.instructions.push(Instruction::ReturnCall(function_index));
+    // }
+
+    // fn visit_return_call_indirect(&mut self, type_index: u32, table_index: u32) -> Self::Output {
+    //     self.instructions.push(Instruction::ReturnCallIndirect(type_index, table_index));
+    // }
+
     fn visit_global_set(&mut self, global_index: u32) -> Self::Output {
         match self.validator.get_operand_type(0) {
             Some(Some(t)) => self.instructions.push(match t {
@@ -206,11 +285,6 @@ impl<R: WasmModuleResources> wasmparser::VisitOperator<'_> for FunctionBuilder<R
             _ => self.visit_unreachable(),
         }
     }
-    fn visit_i32_store(&mut self, memarg: wasmparser::MemArg) -> Self::Output {
-        let arg = MemoryArg { offset: memarg.offset, mem_addr: memarg.memory };
-        let i32store = Instruction::I32Store { offset: arg.offset, mem_addr: arg.mem_addr };
-        self.instructions.push(i32store);
-    }
 
     fn visit_local_get(&mut self, idx: u32) -> Self::Output {
         let Ok(resolved_idx) = self.local_addr_map[idx as usize].try_into() else {
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