How to specifically suppress "Comparing identical expressions" in Eclipse-Helios JDT

I tried annotating the enclosing method with

    @SuppressWarnings("compareIdentical")

but this does not work (worse yet, the annotation results in its own Unsupported @SuppressWarnings("compareIdentical") warning!)

I know that I can always use

    @SuppressWarnings("all")

but that'd be more warning-suppression than I want.

FWIW, I got the "compareIdentical" string from the "Warning Options" table in http://help.eclipse.org/helios/index.jsp?topic=/org.eclipse.jdt.doc.isv/guide/jdt_api_compile.htm (a hail-mary pass, to be sure).

Thanks!