From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- .../ion/spreadcall-not-optimized-static-6b.js | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 js/src/jit-test/tests/ion/spreadcall-not-optimized-static-6b.js (limited to 'js/src/jit-test/tests/ion/spreadcall-not-optimized-static-6b.js') diff --git a/js/src/jit-test/tests/ion/spreadcall-not-optimized-static-6b.js b/js/src/jit-test/tests/ion/spreadcall-not-optimized-static-6b.js new file mode 100644 index 0000000000..b666cadc3c --- /dev/null +++ b/js/src/jit-test/tests/ion/spreadcall-not-optimized-static-6b.js @@ -0,0 +1,35 @@ +// 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; +} + +// %ArrayIteratorPrototype%.next was modified. +function test() { + var ArrayIteratorPrototype = Object.getPrototypeOf(Array.prototype[Symbol.iterator]()); + var ArrayIteratorPrototypeNext = ArrayIteratorPrototype.next; + ArrayIteratorPrototype.next = function() { + var res = ArrayIteratorPrototypeNext.call(this); + if (!res.done) { + res.value += 2; + } + return res; + }; + function fn(...rest) { + return add(...rest); + } + for (var i = 0; i < 2000; ++i) { + assertEq(fn(1, 2), 7); + } +} +test(); -- cgit v1.2.3