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 --- .../tests/warp/arguments-object-load-length.js | 57 ++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 js/src/jit-test/tests/warp/arguments-object-load-length.js (limited to 'js/src/jit-test/tests/warp/arguments-object-load-length.js') diff --git a/js/src/jit-test/tests/warp/arguments-object-load-length.js b/js/src/jit-test/tests/warp/arguments-object-load-length.js new file mode 100644 index 0000000000..935c406ac0 --- /dev/null +++ b/js/src/jit-test/tests/warp/arguments-object-load-length.js @@ -0,0 +1,57 @@ +// Test transpiling of LoadArgumentsObjectLengthResult and cover all possible bailout conditions. + +function blackhole() { + // Direct eval prevents any compile-time optimisations. + eval(""); +} + +function testLengthAccess() { + blackhole(arguments); // Create an arguments object. + + for (var i = 0; i < 50; ++i) { + assertEq(arguments.length, 1); + } +} +for (var i = 0; i < 20; ++i) testLengthAccess(1); + +function markLengthOveriddenIf(args, cond, value) { + with ({}) ; // Don't Warp compile to avoid cold code bailouts. + if (cond) { + args.length = value; + } +} + +function testBailoutLengthReified() { + blackhole(arguments); // Create an arguments object. + + for (var i = 0; i < 50; ++i) { + markLengthOveriddenIf(arguments, i === 25, 0); + + var expected = 0 + (i < 25); + assertEq(arguments.length, expected); + } +} +for (var i = 0; i < 20; ++i) testBailoutLengthReified(1); + + +function deleteLengthIf(args, cond) { + with ({}) ; // Don't Warp compile to avoid cold code bailouts. + if (cond) { + delete args.length; + } +} + +function testBailoutLengthDeleted() { + blackhole(arguments); // Create an arguments object. + + // Load expected values from an array to avoid possible cold code bailouts. + var values = [1, undefined]; + + for (var i = 0; i < 50; ++i) { + deleteLengthIf(arguments, i === 25); + + var expected = values[0 + (i >= 25)]; + assertEq(arguments.length, expected); + } +} +for (var i = 0; i < 20; ++i) testBailoutLengthDeleted(1); -- cgit v1.2.3