This is from an older xlf document, I cannot find anything in recent bluegene specific documents. Try removing it and see if it has any effect.
-Q, -Q!, -Q+, -Q-
Specifies whether internal procedures are inlined or only the internal procedures
identifed in , are inlined or are exempt from inlining. is a list of
internal procedure names that are separated by colons. You must specify at least an
optimization level of -O2 for inlining to take effect with -Q. To turn on inline
expansion for calls to procedures in different scopes, you must also use the
-qipa=inline. The default is no inlining.
