LDC 1.5-1.6 huge degradation of optimization

Igor Shirkalin mathsoft at inbox.ru
Fri Dec 1 04:30:52 UTC 2017


On Thursday, 30 November 2017 at 22:58:10 UTC, Joakim wrote:
> On Thursday, 30 November 2017 at 16:01:19 UTC, kinke wrote:
>> On Thursday, 30 November 2017 at 15:25:31 UTC, Igor Shirkalin 
>> wrote:
>>> It's now obvious the reason of this regression is LLVM 5.0.0
>>> Does it mean it's not time to move to latest LLVM for the 
>>> latest LDC?
>>
>> 5.0.0 *is* the latest released version. 5.0.1 is about to be 
>> released these days, but whether it'll fix this issue is 
>> uncertain. As is whether it's fixed in current LLVM master 
>> (6.0.0). LLVM is a huge piece of software, bugs and 
>> regressions are to be expected.
>
> I too read it the way you did, that llvm needs to be updated 
> forward, but I think he meant ldc should stick with 4.0.1 for 
> now.

Right. Exactly what I meant. Excuse for some irrational English.




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