diff options
Diffstat (limited to 'js/src/jit-test/tests/cacheir/typedarray-non-int32-index-get.js')
-rw-r--r-- | js/src/jit-test/tests/cacheir/typedarray-non-int32-index-get.js | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/cacheir/typedarray-non-int32-index-get.js b/js/src/jit-test/tests/cacheir/typedarray-non-int32-index-get.js new file mode 100644 index 0000000000..5499c26152 --- /dev/null +++ b/js/src/jit-test/tests/cacheir/typedarray-non-int32-index-get.js @@ -0,0 +1,37 @@ +function get(k) { + // Different typed array types to ensure we emit a GetProp IC. + var xs = [ + new Int32Array(10), + new Int16Array(10), + ]; + + // Doesn't read values from the prototype chain. + Object.prototype[k] = 1; + + for (var i = 0; i < 100; ++i) { + var x = xs[i & 1]; + assertEq(x[k], undefined); + } +} + +// Make sure we use a distinct function for each test. +function test(fn) { + return Function(`return ${fn};`)(); +} + +// Negative numbers values aren't int32 indices. +test(get)(-1); +test(get)(-2147483648); +test(get)(-2147483649); + +// Int32 indices must be less-or-equal to max-int32. +test(get)(2147483648); + +// Int32 indices must not have fractional parts. +test(get)(1.5); +test(get)(-1.5); + +// Non-finite numbers aren't int32 indices. +test(get)(NaN); +test(get)(-Infinity); +test(get)(Infinity); |