diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/jit-test/tests/ion/spreadcall-not-optimized-static-4b.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/jit-test/tests/ion/spreadcall-not-optimized-static-4b.js | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/spreadcall-not-optimized-static-4b.js b/js/src/jit-test/tests/ion/spreadcall-not-optimized-static-4b.js new file mode 100644 index 0000000000..bdc2acbc8e --- /dev/null +++ b/js/src/jit-test/tests/ion/spreadcall-not-optimized-static-4b.js @@ -0,0 +1,28 @@ +// Tests when JSOP_OPTIMIZE_SPREADCALL can't be applied during the initial +// Ion compilation. + +// JSOP_OPTIMIZE_SPREADCALL can be optimised when the following conditions +// are fulfilled: +// (1) the argument is an array +// (2) the array has no hole +// (3) array[@@iterator] is not modified +// (4) the array's prototype is Array.prototype +// (5) Array.prototype[@@iterator] is not modified +// (6) %ArrayIteratorPrototype%.next is not modified + +function add(a, b) { + return a + b; +} + +// The rest argument's prototype isn't Array.prototype. +function test() { + class MyArray extends Array { } + function fn(...rest) { + rest = new MyArray(3, 4); + return add(...rest); + } + for (var i = 0; i < 2000; ++i) { + assertEq(fn(1, 2), 7); + } +} +test(); |