if {[lsearch -exact -index 0 $bb upvar] >= 0} {
	    return 1
	}
    }
    return 0
}

# quadcode::transformer method cfRedundancy --
#
#	Removes various partial redundancies among callframe operations
#
# Results:
#	Returns 1 if anything changed, 0 otherwise.
#
# Side effects:
#	Removes many redundant operations.

# quadcode::transformer method cfConsumer --
#
#	Determines what 'invoke' or other operation consumes a callframe
#	that appears in a 'moveToCallframe' operation
#
# Parameters:
#	frame - Callframe variable