------- Comment #6 from schwab at suse dot de 2008-08-04 08:28 ------- Both "Q" and "q" are correct when trying to use the low part of a register. Only if the asm insn is using the high part you must use "Q". It is the modifier (%b or %h) that chooses between low and high part.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37018
