[Info-vax] And another one bites the dust....

[Arne Vajhøj]

On 2/18/2022 12:41 PM, David Wade wrote:
> On 18/02/2022 16:07, Arne Vajhøj wrote:
>> On 2/18/2022 10:59 AM, Dan Cross wrote:
>>> But if VSI is cool with GEM on Alpha/Itanium, and LLVM on
>>> x86_64, I guess that's their business.
>>
>> That is what they say.
> 
> It doesn't really matter what they "say", what is important is source 
> code compatibility. From what I can see the LLVM compiler does not fully 
> support the DEC extensions there may be issues.
> 
> If you need to make changes to stay on VMS then it becomes much harder 
> to justify it.

I think I got that one worded wrong.

VSI use LLVM backend on x86-64.

They use their traditional frontend accepting DEC extensions.

I don't think they have announced what they will do for Fortran/flang
but based on their general direction, then my guess is two compilers:
- Traditional Fortran support Fortran 95 with all DEC extensions aka
   100% copmpatible
- flang with uptodate Fortran support and whatever DEC extensions
   John Reagan can easily put in aka 98% compatible

Arne