v8/test/mjsunit/compiler/inline-throw.js

// Copyright 2010 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
//       notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
//       copyright notice, this list of conditions and the following
//       disclaimer in the documentation and/or other materials provided
//       with the distribution.
//     * Neither the name of Google Inc. nor the names of its
//       contributors may be used to endorse or promote products derived
//       from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

// Flags: --allow-natives-syntax

// Test inlined functions contain throw.
function doThrow() {
  throw "uha";
}

function f(x) {
  if (x == 42) throw doThrow();
  if (x == 43) throw "wow";
  return x == 0;
}

function g(x) {
  return f(x);
}

%PrepareFunctionForOptimization(g);
for (var i = 0; i < 5; i++) g(0);
%OptimizeFunctionOnNextCall(g);
assertEquals(true, g(0));

try {
  g(42);
} catch(e) {
  assertEquals("uha", e);
}

// Test inlining in a test context.
function h(x) {
  return f(x) ? "yes" : "no";
}

%PrepareFunctionForOptimization(h);
for (var i = 0; i < 5; i++) h(0);
%OptimizeFunctionOnNextCall(h);
assertEquals("yes", h(0));

try {
  h(43);
} catch(e) {
  assertEquals("wow", e);
}