1 files changed, 36 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testShiftLeft.js b/js/src/jit-test/tests/basic/testShiftLeft.js
new file mode 100644
index 0000000000..341b59aa52
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testShiftLeft.js
@@ -0,0 +1,36 @@
+// |jit-test| valgrind
+
+/* Test the proper operation of the left shift operator. This is especially
+ * important on ARM as an explicit mask is required at the native instruction
+ * level. */
+
+function testShiftLeft()
+{
+    var r = [];
+    var i = 0;
+    var j = 0;
+
+    var shifts = [0,1,7,8,15,16,23,24,31];
+
+    /* Samples from the simple shift range. */
+    for (i = 0; i < shifts.length; i++)
+        r[j++] = 1 << shifts[i];
+
+    /* Samples outside the normal shift range. */
+    for (i = 0; i < shifts.length; i++)
+        r[j++] = 1 << (shifts[i] + 32);
+
+    /* Samples far outside the normal shift range. */
+    for (i = 0; i < shifts.length; i++)
+        r[j++] = 1 << (shifts[i] + 224);
+    for (i = 0; i < shifts.length; i++)
+        r[j++] = 1 << (shifts[i] + 256);
+
+    return r.join(",");
+}
+
+assertEq(testShiftLeft(), 
+	 "1,2,128,256,32768,65536,8388608,16777216,-2147483648,"+
+	 "1,2,128,256,32768,65536,8388608,16777216,-2147483648,"+
+	 "1,2,128,256,32768,65536,8388608,16777216,-2147483648,"+
+	 "1,2,128,256,32768,65536,8388608,16777216,-2147483648");