[V8][Wasm] Wasm throws.

test/mjsunit/wasm/exceptions.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 --wasm-eh-prototype
+
+load("test/mjsunit/wasm/wasm-constants.js");
+load("test/mjsunit/wasm/wasm-module-builder.js");
+
+var module = (function () {
+  var builder = new WasmModuleBuilder();
+
+  builder.addFunction("throw_param_if_not_zero", kSig_i_i)
+    .addBody([
+      kExprGetLocal, 0,
+      kExprI32Const, 0,
+      kExprI32Ne,
+      kExprIf,
+      kExprGetLocal, 0,
+      kExprThrow,
+      kExprEnd,
+      kExprI32Const, 1
+    ])
+    .exportFunc()
+
+  builder.addFunction("throw_20", kSig_v_v)
+    .addBody([
+      kExprI32Const, 20,
+      kExprThrow
+    ])
+    .exportFunc()
+
+  builder.addFunction("throw_expr_with_params", kSig_v_ddi)
+    .addBody([
+      // p2 * (p0 + min(p0, p1))|0 - 20
+      kExprGetLocal, 2,
+      kExprGetLocal, 0,
+      kExprGetLocal, 0,
+      kExprGetLocal, 1,
+      kExprF64Min,
+      kExprF64Add,
+      kExprI32SConvertF64,
+      kExprI32Mul,
+      kExprI32Const, 20,
+      kExprI32Sub,
+      kExprThrow
+    ])
+    .exportFunc()
+
+  return builder.instantiate();
+})();
+
+// Check the module exists.
+assertFalse(module === undefined);
+assertFalse(module === null);
+assertFalse(module === 0);
+assertEquals("object", typeof module.exports);
+assertEquals("function", typeof module.exports.throw_param_if_not_zero);
+
+assertEquals(1, module.exports.throw_param_if_not_zero(0));
+assertWasmThrows(10, function() { module.exports.throw_param_if_not_zero(10) });
+assertWasmThrows(-1, function() { module.exports.throw_param_if_not_zero(-1) });
+assertWasmThrows(20, module.exports.throw_20);
+assertWasmThrows(
+    -8, function() { module.exports.throw_expr_with_params(1.5, 2.5, 4); });
+assertWasmThrows(
+    12, function() { module.exports.throw_expr_with_params(5.7, 2.5, 4); });