[Info-vax] OpenVMS x86-64 and RDB and DB's in general on OpenVMS

[Jan-Erik Soderholm]

JF Mezei skrev den 2015-06-30 22:14:
> On 15-06-30 15:55, Jan-Erik Soderholm wrote:
>
>> Today Rdb produces IA64 machine code on the fly
>
> Ok, that appears to be more than "compile and go". Wouldn't the
> generated code be more or less from templates with just a few changes to
> point to parameters ?

It is very clear that you have NOT read the documents I linked to.
Norm describes in great detail how that code generation works.

Maybe do some homework first and ask later.

>
> In terms of the pre-compilers for the various SQL statements, it is said
> that it generates GEM code,...

Where does it say that? Any reference?

The precompilers produce architecture specifik object code
from the embedded SQL statements.

> so I assume this needs to be changed to
> generating LLVM code ?
>
> Big picture: would those changes represent a HUGE amount of work ? I
> realise that it prevents "compile and go", but just how involved is it
> to update the on-the-fly code and the GEM to LLVM change ?
>

You'd better ask Oracle, I guess.