Thanks for the quick response, Alexander! Regards, Vivek Kinhekar +91-7709046470
-----Original Message----- From: Alexander Monakov <amona...@ispras.ru> Sent: Friday, April 13, 2018 5:58 PM To: Vivek Kinhekar <vivek.kinhe...@blackfigtech.com> Cc: gcc@gcc.gnu.org Subject: Re: GCC Compiler Optimization ignores or mistreats MFENCE memory barrier related instruction On Fri, 13 Apr 2018, Vivek Kinhekar wrote: > The mfence instruction with memory clobber asm instruction should > create a barrier between division and printf instructions. No, floating-point division does not touch memory, so the asm does not (and need not) restrict its motion. Alexander
