[llvm-dev] How to define Struct / Array type with runtime invariants like SVE or RVV

[Jojo R via llvm-dev]

— Jojo
在 2021年8月25日 +0800 PM3:27，Jonathan Wakely <jwakely.gcc at gmail.com>，写道：
>
>
> On Wed, 25 Aug 2021, 07:45 Jojo R wrote:
> > Hi,
> >
> >         I want to use struct or array type as container in my project,
> >
> >         but GCC does not support this usage by now because that
> >
> >         the size of these types are decided at compile-time :(
> >
> >         so is there any good solution to fix this ?
> >
> >         or some new feature patches to add supporting for these types with
> >         computed size at runtime ?
>
> Do you mean something like
> https://en.m.wikipedia.org/wiki/Flexible_array_member ?
>
No, it’s similar but include vector type as member like :

struct vectord {
 vint8m1_t data; // Vector Length Agnostic (VLA)
};
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