diff options
Diffstat (limited to 'js/src/jit-test/tests/ion/typed-arrays-1.js')
-rw-r--r-- | js/src/jit-test/tests/ion/typed-arrays-1.js | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/typed-arrays-1.js b/js/src/jit-test/tests/ion/typed-arrays-1.js new file mode 100644 index 000000000..0bfd1f489 --- /dev/null +++ b/js/src/jit-test/tests/ion/typed-arrays-1.js @@ -0,0 +1,101 @@ +function testInt8() { + var arr1 = new Int8Array(50); + var arr2 = new Uint8Array(50); + var arr3 = new Uint8ClampedArray(50); + + for (var i=0; i<arr1.length; i++) { + arr1[i] = arr2[i] = arr3[i] = i * 8; + } + var res = 0; + for (var i=0; i<arr1.length; i++) { + res += arr1[i] + arr2[i] + arr3[i] + arr2[10]; + } + assertEq(res, 18334); +} +testInt8(); + +function testInt16() { + var arr1 = new Int16Array(70); + var arr2 = new Uint16Array(70); + + for (var i=0; i<arr1.length; i++) { + arr1[i] = arr2[i] = i * 1000; + } + var res = 0; + for (var i=0; i<arr1.length; i++) { + res += arr1[i] + arr2[i] + arr2[1] + arr1[3]; + } + assertEq(res, 2423024); +} +testInt16(); + +function testInt32() { + var arr = new Int32Array(60); + arr[0] = -50; + for (var i=1; i<arr.length; i++) { + arr[i] = arr[i-1] + arr[0]; + ++arr[0]; + } + assertEq(arr[arr.length-1], -1289); +} +testInt32(); + +function testUint32() { + function sum(arr) { + var res = 0; + for (var i=0; i<arr.length; i++) { + res += arr[i]; + } + return res; + } + var arr = new Uint32Array(100); + for (var i=0; i<arr.length; i++) { + arr[i] = i; + } + + // Compile sum() to read int32 values. + assertEq(sum(arr), 4950); + + // Add a large uint32 so that the sum no longer fits in an + // int32. sum() should be recompiled to return a double. + arr[50] = 0xffffeeee; + assertEq(sum(arr), 4294967826); +} +testUint32(); + +function testFloat() { + var arr1 = new Float32Array(75); + var arr2 = new Float64Array(75); + arr1[0] = arr2[0] = Math.PI * 1234567.8; + + for (var i=1; i<75; i++) { + arr1[i] = arr1[i-1] + arr1[0]; + arr2[i] = arr2[i-1] + arr2[0]; + } + assertEq(arr1[74] > 290888255, true); + assertEq(arr1[74] < 290888257, true); + + assertEq(arr2[74] > 290888184, true); + assertEq(arr2[74] < 290888185, true); +} +testFloat(); + +function testCanonicalNaN() { + // NaN values have to be canonicalized. Otherwise, malicious scripts could + // construct arbitrary Value's (due to our NaN boxing Value representation). + var buf = new ArrayBuffer(16); + var uint32 = new Uint32Array(buf); + var f64 = new Float64Array(buf); + var f32 = new Float32Array(buf); + + // Evil: write a JSVAL_TYPE_OBJECT type tag... + uint32[0] = 0xffffff87; + uint32[1] = 0xffffff87; + + // Make sure this value is interpreted as a double. + for (var i=0; i<100; i++) { + assertEq(isNaN(f64[0]), true); + assertEq(isNaN(f32[0]), true); + } +} +testCanonicalNaN(); |