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-rw-r--r--js/src/jit-test/tests/jaeger/testShiftSameBacking.js12
1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/jaeger/testShiftSameBacking.js b/js/src/jit-test/tests/jaeger/testShiftSameBacking.js
new file mode 100644
index 000000000..1cbe064d3
--- /dev/null
+++ b/js/src/jit-test/tests/jaeger/testShiftSameBacking.js
@@ -0,0 +1,12 @@
+// vim: set ts=8 sts=4 et sw=4 tw=99:
+
+function f(a) {
+ var x = a;
+ var y = x;
+
+ assertEq((x << y), (a << a));
+ assertEq((y << x), (a << a));
+}
+
+f(2);
+