[V8][Wasm] Wasm throws.

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 88 matching lines @@
 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_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], []);
 
 function makeSig(params, results) {
   return {params: params, results: results};
 }
 
 function makeSig_v_x(x) {
   return makeSig([x], []);
 }
 
 function makeSig_v_xx(x) {
@@ skipping 17 matching lines @@
 var kExprBlock = 0x01;
 var kExprLoop = 0x02;
 var kExprIf = 0x03;
 var kExprElse = 0x04;
 var kExprSelect = 0x05;
 var kExprBr = 0x06;
 var kExprBrIf = 0x07;
 var kExprBrTable = 0x08;
 var kExprReturn = 0x09;
 var kExprUnreachable = 0x0a;
+var kExprThrow = 0xfa;
 var kExprEnd = 0x0f;
 
 var kExprI32Const = 0x10;
 var kExprI64Const = 0x11;
 var kExprF64Const = 0x12;
 var kExprF32Const = 0x13;
 var kExprGetLocal = 0x14;
 var kExprSetLocal = 0x15;
 var kExprCallFunction = 0x16;
 var kExprCallIndirect = 0x17;
@@ skipping 185 matching lines @@
       }
       threwException = false;
     } catch (e) {
       assertEquals("object", typeof e);
       assertEquals(kTrapMsgs[trap], e.message);
       // Success.
       return;
     }
     throw new MjsUnitAssertionError("Did not trap, expected: " + kTrapMsgs[trap]);
 }
+
+function assertWasmThrows(value, code) {
+    assertEquals("number", typeof(value));
+    try {
+      if (typeof code === 'function') {
+        code();
+      } else {
+        eval(code);
+      }
+    } catch (e) {
+      assertEquals("number", typeof e);
+      assertEquals(value, e);
+      // Success.
+      return;
+    }
+    throw new MjsUnitAssertionError("Did not throw at all, expected: " + value);
+}