This is the mail archive of the gcc-bugs@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

[Bug c/51455] Possible uninitialized register use when array subscript is unsigned


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51455

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-12-07 19:28:29 UTC ---
movzbl 0x20d(%rsp),%eax
is the same as:
movzbq 0x20d(%rsp),%rax

as all l instructions zero extend to q.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]