What is the most stable D compiler

[eugene via Digitalmars-d]

On Wednesday, 14 September 2016 at 11:35:46 UTC, rikki cattermole 
wrote:
> On 14/09/2016 11:34 PM, eugene wrote:
>> What is the most reliable D compiler: dmd, ldc, gdc?
>> Which can be used in production?
>> Why there are 3(maybe more) compilers and not just one?
>
> What exactly do you define as stable?

i mean without bugs in compiler