http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53353
--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-05-15 02:02:23 UTC --- (In reply to comment #2) > Obviously a __int128_t fits in two registers. The bug is that gcc doesn't > warn/error about code mistakenly trying to fit it into one. Instead, gcc > generates a weird 16-bit operation, causing silent bad code generation. It does not know what you want to do? Really it is the "ax:dx" pair most likely. Also the inline-asm uses internal GCC representation. How does GCC not know the inline-asm did the correct thing of what the user wanted it to do? Hint GCC cannot read your mind to say you made a mistake here.
