Add Wasm SIMD opcodes.

src/wasm/module-decoder.cc

 // Copyright 2015 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/wasm/module-decoder.h"
 
 #include "src/base/functional.h"
 #include "src/base/platform/platform.h"
 #include "src/macro-assembler.h"
 #include "src/objects.h"
@@ skipping 680 matching lines @@
       case kMemU32:
         return MachineType::Uint32();
       case kMemI64:
         return MachineType::Int64();
       case kMemU64:
         return MachineType::Uint64();
       case kMemF32:
         return MachineType::Float32();
       case kMemF64:
         return MachineType::Float64();
+      case kMemS128:
+        return MachineType::Simd128();
       default:
         error(pc_ - 1, "invalid memory type");
         return MachineType::None();
     }
   }
 
   // Parses a type entry, which is currently limited to functions only.
   FunctionSig* consume_sig() {
     const byte* pos = pc_;
     byte form = consume_u8("type form");
@@ skipping 103 matching lines @@
     return FunctionError("size > maximum function size");
   isolate->counters()->wasm_function_size_bytes()->AddSample(
       static_cast<int>(size));
   WasmFunction* function = new WasmFunction();
   ModuleDecoder decoder(zone, function_start, function_end, kWasmOrigin);
   return decoder.DecodeSingleFunction(module_env, function);
 }
 }  // namespace wasm
 }  // namespace internal
 }  // namespace v8