You define STRICT_ALIGNED to be 1 in i386.h or provide an option to
turn that on/off like the rs6000 target does.
Thanks,
Andrew Pinski
Sent from my iPhone
On Mar 8, 2010, at 7:37 AM, Paweł Sikora <pl...@agmk.net> wrote:
hi,
during development a cross platform appliacation on x86 workstation
i've enabled an alignemnt checking [1] to catch possible erroneous
code before it appears on client's sparc/arm cpu with sigbus ;)
it works pretty fine and catches alignment violations but Jakub
Jelinek
had told me (on glibc bugzilla) that gcc on x86 can still dereference
an unaligned pointer (except for vector insns).
i suppose it means that gcc can emit e.g. movl for access a short int
(or maybe others scenarios) in some cases and violates cpu alignment
rules.
so, is it possible to instruct gcc-x86 to always use suitable loads/
stores
like on sparc/arm?
[1] "AC" bit - http://en.wikipedia.org/wiki/FLAGS_register_(computing)
BR,
Pawel.
