From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- .../ion/spreadcall-not-optimized-dynamic-4a.js | 43 ++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 js/src/jit-test/tests/ion/spreadcall-not-optimized-dynamic-4a.js (limited to 'js/src/jit-test/tests/ion/spreadcall-not-optimized-dynamic-4a.js') diff --git a/js/src/jit-test/tests/ion/spreadcall-not-optimized-dynamic-4a.js b/js/src/jit-test/tests/ion/spreadcall-not-optimized-dynamic-4a.js new file mode 100644 index 0000000000..22b64f9a81 --- /dev/null +++ b/js/src/jit-test/tests/ion/spreadcall-not-optimized-dynamic-4a.js @@ -0,0 +1,43 @@ +// Tests when JSOP_OPTIMIZE_SPREADCALL no longer apply after 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 arguments don't share a common prototype. +function test() { + class MyArray1 extends Array { } + class MyArray2 extends Array { } + function maybeInvalidate(rest) { + // Use a WithStatement to prevent Ion-inlining. This ensures any + // bailouts due to type changes don't occur in this function, but + // instead in the caller. + with ({}); + + if (i >= 1900) { + if (i & 1) + rest = new MyArray1(3, 4); + else + rest = new MyArray2(5, 6); + } + return rest; + } + function fn(...rest) { + rest = maybeInvalidate(rest); + return add(...rest); + } + for (var i = 0; i < 4000; ++i) { + assertEq(fn(1, 2), i < 1900 ? 3 : (i & 1) ? 7 : 11); + } +} +test(); -- cgit v1.2.3