Convert SIMD wasm ops to runtime function calls

test/mjsunit/wasm/test-wasm-module-builder.js

 // Copyright 2016 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
 
 load('test/mjsunit/wasm/wasm-constants.js');
 load('test/mjsunit/wasm/wasm-module-builder.js');
 
 var debug = false;
@@ skipping 81 matching lines @@
                   0, kExprGetLocal, 1, kExprGetLocal, 2, kExprCallIndirect, kArity2, 0])
         .exportAs("main");
     module.appendToFunctionTable([0]);
 
     var instance = module.instantiate();
     assertEquals(44, instance.exports.main(0, 11, 33));
     assertEquals(7777, instance.exports.main(0, 2222, 5555));
     assertThrows(function() { instance.exports.main(1, 1, 1); });
 })();
 
+(function SimdSplatExtractTest() {
+  print("simd test");
+  var module = new WasmModuleBuilder();
+  module.addFunction("splatextract", kSig_i_ii)
+      .addBody([kExprGetLocal, 0, kExprInt32x4Splat,
+          kExprGetLocal, 1, kExprInt32x4ExtractLane])
+      .exportAs("main");
+  var instance = module.instantiate();
+  assertEquals(123, instance.exports.main(123, 2));
+})();
+
 (function DataSegmentTest() {
     var module = new WasmModuleBuilder();
     module.addMemory(1, 1, false);
     module.addFunction("load", kSig_i_i)
         .addBody([kExprGetLocal, 0, kExprI32LoadMem, 0, 0])
         .exportAs("load");
     module.addDataSegment(0, [9, 9, 9, 9], true);
 
     var buffer = module.toBuffer(debug);
     var instance = Wasm.instantiateModule(buffer);
@@ skipping 32 matching lines @@
     var index = module.addImportWithModule("mod", "print", makeSig_v_x(kAstI32));
     module.addFunction("foo", kSig_v_v)
         .addBody([kExprI8Const, 19, kExprCallImport, kArity1, index])
         .exportAs("main");
 
     var buffer = module.toBuffer(debug);
     var instance = Wasm.instantiateModule(buffer, {mod: {print: print}});
     print("should print 19! ");
     instance.exports.main();
 })();