[wasm] Simd128 types should not be available in asmjs modules.

test/mjsunit/wasm/wasm-constants.js

 // 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.
 
 // Flags: --expose-wasm
 
 function bytes() {
   var buffer = new ArrayBuffer(arguments.length);
   var view = new Uint8Array(buffer);
   for (var i = 0; i < arguments.length; i++) {
@@ skipping 64 matching lines @@
 var kDeclFunctionImport = 0x02;
 var kDeclFunctionLocals = 0x04;
 var kDeclFunctionExport = 0x08;
 
 // Local types
 var kAstStmt = 0;
 var kAstI32 = 1;
 var kAstI64 = 2;
 var kAstF32 = 3;
 var kAstF64 = 4;
+var kAstS128 = 5;
 
 var kExternalFunction = 0;
 var kExternalTable = 1;
 var kExternalMemory = 2;
 var kExternalGlobal = 3;
 
 // Useful signatures
 var kSig_i_i = makeSig([kAstI32], [kAstI32]);
 var kSig_i_l = makeSig([kAstI64], [kAstI32]);
 var kSig_i_ii = makeSig([kAstI32, kAstI32], [kAstI32]);
 var kSig_i_iii = makeSig([kAstI32, kAstI32, kAstI32], [kAstI32]);
 var kSig_d_dd = makeSig([kAstF64, kAstF64], [kAstF64]);
 var kSig_l_ll = makeSig([kAstI64, kAstI64], [kAstI64]);
 var kSig_i_dd = makeSig([kAstF64, kAstF64], [kAstI32]);
 var kSig_v_v = makeSig([], []);
 var kSig_i_v = makeSig([], [kAstI32]);
 var kSig_f_v = makeSig([], [kAstF64]);
 var kSig_d_v = makeSig([], [kAstF64]);
 var kSig_v_i = makeSig([kAstI32], []);
 var kSig_v_ii = makeSig([kAstI32, kAstI32], []);
 var kSig_v_iii = makeSig([kAstI32, kAstI32, kAstI32], []);
 var kSig_v_d = makeSig([kAstF64], []);
 var kSig_v_dd = makeSig([kAstF64, kAstF64], []);
 var kSig_v_ddi = makeSig([kAstF64, kAstF64, kAstI32], []);
+var kSig_s_v = makeSig([], [kAstS128]);
 
 function makeSig(params, results) {
   return {params: params, results: results};
 }
 
 function makeSig_v_x(x) {
   return makeSig([x], []);
 }
 
 function makeSig_v_xx(x) {
@@ skipping 243 matching lines @@
         eval(code);
       }
     } catch (e) {
       assertEquals("number", typeof e);
       assertEquals(value, e);
       // Success.
       return;
     }
     throw new MjsUnitAssertionError("Did not throw at all, expected: " + value);
 }