We can still support all processors. I believe it should be possible to check for cpuid flags and conditionally emit these instructions.
On Mar 2, 2018 12:23 AM, "Ian Lance Taylor" <i...@golang.org> wrote: > On Thu, Mar 1, 2018 at 5:05 AM, Agniva De Sarker > <agniva.quicksil...@gmail.com> wrote: > > > > I believe using the non-destructive 3 operand form will help a lot in > > reducing the size of binaries. And also, it might give us a good base to > add > > FMA support and SIMD optimizations later. > > > > I have been adding fast paths to some math functions to use AVX > > instructions, but I was just wondering if there is any plan in the > pipeline > > to do this from the compiler itself. > > We would have to make a clear decision as to the oldest amd64 > processor we wanted to support. Right now I believe we support all > amd64 processors. Are we ready to give up on old ones? > > I don't think it's worth adding a GOAMD64 environment variable for > this. I don't think the gain is worth the complexity. Happy to be > proven wrong. > > Ian > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
