[compiler] [wasm] Introduce Word32/64ReverseBytes as TF Optional Opcode

src/compiler/arm/instruction-selector-arm.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/base/adapters.h"
 #include "src/base/bits.h"
 #include "src/compiler/instruction-selector-impl.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/node-properties.h"
 
@@ skipping 1064 matching lines @@
 
 
 void InstructionSelector::VisitWord32Ctz(Node* node) { UNREACHABLE(); }
 
 
 void InstructionSelector::VisitWord32ReverseBits(Node* node) {
   DCHECK(IsSupported(ARMv7));
   VisitRR(this, kArmRbit, node);
 }
 
+void InstructionSelector::VisitWord64ReverseBytes(Node* node) { UNREACHABLE(); }
+
+void InstructionSelector::VisitWord32ReverseBytes(Node* node) { UNREACHABLE(); }
 
 void InstructionSelector::VisitWord32Popcnt(Node* node) { UNREACHABLE(); }
 
 
 void InstructionSelector::VisitInt32Add(Node* node) {
   ArmOperandGenerator g(this);
   Int32BinopMatcher m(node);
   if (CanCover(node, m.left().node())) {
     switch (m.left().opcode()) {
       case IrOpcode::kInt32Mul: {
@@ skipping 1200 matching lines @@
   Vector<MachineType> req_aligned = Vector<MachineType>::New(2);
   req_aligned[0] = MachineType::Float32();
   req_aligned[1] = MachineType::Float64();
   return MachineOperatorBuilder::AlignmentRequirements::
       SomeUnalignedAccessUnsupported(req_aligned, req_aligned);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8