author Julian Seward <jseward@acm.org>
Tue, 31 Jan 2023 06:11:20 +0000
changeset 651017 3cb50cbf836e2e371e41a7b3c9ddd60a6010e109
parent 636227 71feffa5fb1ad15b18b6795df71e20e86fb0fce3
permissions -rw-r--r--
Bug 1812285 - wasm::InitExprInterpreter: use inline capacity for `::stack`. r=yury. The Dart Barista-3 benchmark gives the initial expression interpreter a lot of work. Profiling shows that wasm::InitExprInterpreter::stack heap-allocates around 37000 short-lifetime blocks to hold the stacked values. Using a 48-element inline capacity removes all of those allocations. (40 removes almost all, but not all). Similar ridealong fix: for the wasm parser iterator Iter<Policy>::valueStack_, increase inline capacity from 16 to 32. This takes out another 2500 allocations. Differential Revision: https://phabricator.services.mozilla.com/D167926

<!doctype html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="../resources/test-helper.js"></script>
<title>Image drag and drop to iframe</title>
<style type="text/css">
<p><img src="../resources/circle.png" alt="PNG circle" ondragstart="event.dataTransfer.effectAllowed = 'copy'"/></p>
<p>Drag circle above to the box below. It should be copied to the box once you drop it there.</p>
<p><iframe src="helper-drop-image-here.xhtml">XHTML with image</iframe></p>
async function test() {
  await new Promise(loaded => window.addEventListener("load", loaded));
  const img = document.querySelector('img');
  const iframe = document.querySelector('iframe');
  const innerDoc = iframe.contentDocument || iframe.contentWindow.document;
  const div = innerDoc.querySelector('div');
  function onDropCallBack(event) {
    assert_equals(img.src, event.dataTransfer.getData('text/uri-list').replace(/\r\n$/,''));
    return true;
  dragDropTest(img, div, onDropCallBack, 'Dragging an image to an iframe should copy it there', iframe)