• =?UTF-8?B?TcOhcmNpbw==?= Martins (6/6) Sep 02 2017 I was curious if anyone has tried implementing the GC mark phase
• rikki cattermole (3/9) Sep 02 2017 I'm not so sure it can be.

=?UTF-8?B?TcOhcmNpbw==?= Martins <marcioapm gmail.com> writes:

I was curious if anyone has tried implementing the GC mark phase 
with SIMD instrs?
If so, what were the results, and why didn't it get accepted?

At first thought, it seems like a simple project that could 
improve performance of big-memory programs by a significant 
margin, right?

rikki cattermole <rikki cattermole.co.nz> writes:

On 02/09/2017 1:42 PM, Márcio Martins wrote:
 I was curious if anyone has tried implementing the GC mark phase with 
 SIMD instrs?
 If so, what were the results, and why didn't it get accepted?
 
 At first thought, it seems like a simple project that could improve 
 performance of big-memory programs by a significant margin, right?


I'm not so sure it can be.
https://github.com/dlang/druntime/blob/master/src/gc/impl/conservative/gc.d#L1955