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-rw-r--r--js/src/jit-test/tests/basic/testShiftLeft.js38
1 files changed, 38 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 000000000..4cc78f5ea
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testShiftLeft.js
@@ -0,0 +1,38 @@
+// |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. */
+
+load(libdir + 'range.js');
+
+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");