1 files changed, 68 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/SIMD/convert.js b/js/src/jit-test/tests/SIMD/convert.js
new file mode 100644
index 000000000..b27a041e7
--- /dev/null
+++ b/js/src/jit-test/tests/SIMD/convert.js
@@ -0,0 +1,68 @@
+load(libdir + 'simd.js');
+
+setJitCompilerOption("ion.warmup.trigger", 30);
+
+var cast = (function() {
+    var i32 = new Int32Array(1);
+    var f32 = new Float32Array(i32.buffer);
+    return {
+        fromInt32Bits(x) {
+            i32[0] = x;
+            return f32[0];
+        },
+
+        fromFloat32Bits(x) {
+            f32[0] = x;
+            return i32[0];
+        }
+    }
+})();
+
+function f() {
+    // No bailout here.
+    var f4 = SIMD.Float32x4(1, 2, 3, 4);
+    var i4 = SIMD.Int32x4(1, 2, 3, 4);
+    var BitOrZero = (x) => x | 0;
+    for (var i = 0; i < 150; i++) {
+        assertEqX4(SIMD.Float32x4.fromInt32x4(i4), unaryX4(BitOrZero, f4, Math.fround));
+        assertEqX4(SIMD.Float32x4.fromInt32x4Bits(i4), unaryX4(cast.fromInt32Bits, f4, Math.fround));
+        assertEqX4(SIMD.Int32x4.fromFloat32x4(f4), unaryX4(Math.fround, i4, BitOrZero));
+        assertEqX4(SIMD.Int32x4.fromFloat32x4Bits(f4), unaryX4(cast.fromFloat32Bits, i4, BitOrZero));
+    }
+}
+
+function uglyDuckling(val) {
+    // We bail out when i == 149 because the conversion will return
+    // 0x80000000 and the input actually wasn't in bounds.
+    val = Math.fround(val);
+    for (var i = 0; i < 150; i++) {
+        var caught = false;
+        try {
+            var v = SIMD.Float32x4(i < 149 ? 0 : val, 0, 0, 0)
+            SIMD.Int32x4.fromFloat32x4(v);
+        } catch(e) {
+            assertEq(e instanceof RangeError, true);
+            assertEq(i, 149);
+            caught = true;
+        }
+        assertEq(i < 149 || caught, true);
+    }
+}
+
+function dontBail() {
+    // On x86, the conversion will return 0x80000000, which will imply that we
+    // check the input values. However, we shouldn't bail out in this case.
+    for (var i = 0; i < 150; i++) {
+        var v = SIMD.Float32x4(i < 149 ? 0 : -Math.pow(2, 31), 0, 0, 0)
+        SIMD.Int32x4.fromFloat32x4(v);
+    }
+}
+
+f();
+
+dontBail();
+dontBail();
+
+uglyDuckling(Math.pow(2, 31));
+uglyDuckling(NaN);
+uglyDuckling(-Math.pow(2, 32));