File: test_throwing_method_noDCE.html

package info (click to toggle)
firefox 147.0.2-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 4,683,484 kB
  • sloc: cpp: 7,607,246; javascript: 6,533,185; ansic: 3,775,227; python: 1,415,393; xml: 634,561; asm: 438,951; java: 186,241; sh: 62,752; makefile: 18,079; objc: 13,092; perl: 12,808; yacc: 4,583; cs: 3,846; pascal: 3,448; lex: 1,720; ruby: 1,003; php: 436; lisp: 258; awk: 247; sql: 66; sed: 54; csh: 10; exp: 6
file content (30 lines) | stat: -rw-r--r-- 878 bytes parent folder | download | duplicates (27) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 
<!DOCTYPE html>
<meta charset=utf-8>
<title>Test that we don't DCE functions that can throw</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
/* global test, assert_true */
test(function() {
  function test(root) {
    var threw = false;
    try {
        root.querySelectorAll("");
    } catch (e) { threw = true; }
    // Hot loop to make sure the JIT heuristics ion-compile this function even
    // though it's throwing exceptions (which would normally make us back off
    // of ion compilation).
    for (var i = 0; i < 1500; i++) {
      // empty
    }
    return threw;
  }

  var threw = false;
  var el = document.createElement("div");
  for (var i = 0; i < 200; i++)
      threw = test(el);
  assert_true(threw);
}, "Shouldn't optimize away throwing functions");
</script>