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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/jit-test/tests/ion/spreadcall-not-optimized-dynamic-5b.js | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit-test/tests/ion/spreadcall-not-optimized-dynamic-5b.js')
-rw-r--r-- | js/src/jit-test/tests/ion/spreadcall-not-optimized-dynamic-5b.js | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/spreadcall-not-optimized-dynamic-5b.js b/js/src/jit-test/tests/ion/spreadcall-not-optimized-dynamic-5b.js new file mode 100644 index 0000000000..37ce077723 --- /dev/null +++ b/js/src/jit-test/tests/ion/spreadcall-not-optimized-dynamic-5b.js @@ -0,0 +1,40 @@ +// 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; +} + +// Array.prototype[@@iterator] was modified. +function test() { + function maybeInvalidate() { + // 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) { + var ArrayPrototypeIterator = Array.prototype[Symbol.iterator]; + Array.prototype[Symbol.iterator] = function() { + return ArrayPrototypeIterator.call([3, 4]); + }; + } + } + function fn(...rest) { + maybeInvalidate(); + return add(...rest); + } + for (var i = 0; i < 4000; ++i) { + assertEq(fn(1, 2), i < 1900 ? 3 : 7); + } +} +test(); |