On Fri, Dec 6, 2013 at 3:59 PM, Yury Gribov <y.gri...@samsung.com> wrote: >> big code size reduction > > I meant to say "instrumented code size reduction"...
I agree. Reads are usually 2/3 of all memory accesses in a program (counted both statically or dynamically). So if you instrument only writes you get just 1/3 of instrumentation and slowdown. Of course, you also get a smaller amount of bugs. > > -Y > > ----------------------------------------------- > From: Yury Gribov <y.gri...@samsung.com> > Sent: Friday, December 06, 2013 3:55PM > To: Konstantin Serebryany <konstantin.s.serebry...@gmail.com> > Cc: GCC Patches <gcc-patches@gcc.gnu.org>, Viacheslav Garbuzov > <v.garbu...@samsung.com>, Max Ostapenko <m.ostape...@partner.samsung.com> > Subject: Re: RFC Asan instrumentation control > > > On 12/06/2013 03:55 PM, Yury Gribov wrote: > Konstantin Serebryany wrote: >> only -asan-stack and -asan-globals affect the memory overhead > > But disabling code also counts. -asan-instrument-reads=0 may result in big > code size reduction (I'd say over 50%). > > -Y > > >
